Nothing Special   »   [go: up one dir, main page]

CN109675403B - Cyclic regeneration process of adsorbent for treating VOCs waste gas - Google Patents

Cyclic regeneration process of adsorbent for treating VOCs waste gas Download PDF

Info

Publication number
CN109675403B
CN109675403B CN201910182003.4A CN201910182003A CN109675403B CN 109675403 B CN109675403 B CN 109675403B CN 201910182003 A CN201910182003 A CN 201910182003A CN 109675403 B CN109675403 B CN 109675403B
Authority
CN
China
Prior art keywords
adsorbent
chamber
waste gas
desorption
bed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910182003.4A
Other languages
Chinese (zh)
Other versions
CN109675403A (en
Inventor
杨松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU JIAXIN ENVIRONMENTAL ENGINEERING Co.,Ltd.
Original Assignee
Jiangsu Jiaxin Environmental Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Jiaxin Environmental Engineering Co ltd filed Critical Jiangsu Jiaxin Environmental Engineering Co ltd
Priority to CN201910182003.4A priority Critical patent/CN109675403B/en
Publication of CN109675403A publication Critical patent/CN109675403A/en
Application granted granted Critical
Publication of CN109675403B publication Critical patent/CN109675403B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B01D53/08Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds according to the "moving bed" method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/34Regenerating or reactivating
    • B01J20/345Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3458Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/34Regenerating or reactivating
    • B01J20/3483Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to the technical field of environmental protection, in particular to a cyclic regeneration process of an adsorbent for treating VOCs waste gas. The method is characterized in that: the VOCs waste gas is effectively treated and the adsorbent is recycled through the desorption pyrolysis furnace, the chain transmission grate bed, the adsorbent moving bed and the induced air system.

Description

Cyclic regeneration process of adsorbent for treating VOCs waste gas
Technical Field
The invention relates to the technical field of environmental protection, in particular to a cyclic regeneration process of an adsorbent for treating VOCs waste gas.
Background
The industrial gaseous pollutants are the main sources of atmospheric environmental pollutants, wherein Volatile Organic Compounds (VOCs) are gaseous pollutants having serious harmful effects on the environment, and are also the sources of occupational disease harmful factors affecting the health of operators in workplaces, and the Volatile Organic Compounds (VOCs) are widely from the chemical industries of paints, coatings, lubricating oils, rubbers and the like. Due to the huge destructive effect on human bodies and natural environment, the state has come out of relevant laws and regulations to strictly control the treatment and discharge of the pollutants. The organic waste gas treatment technology commonly used at present comprises a combustion method, a chemical oxidation method, a chemical absorption method, an adsorption method, a biological method and the like. Because the VOCs waste gas that discharges in the actual production process is low concentration gaseous pollutant, usually adopt the adsorption method to administer, but the adsorbent adsorbs behind the VOCs saturation, becomes solid discarded pollutant, and the common way is with its regeneration. The Chinese invention patent (patent application number is 201210077796.1, the patent name is an electric heating type purification filter element for treating large-air-volume VOCs waste gas) discloses an electric heating type purification filter element for treating large-air-volume VOCs waste gas, which comprises a building enclosure and an adsorption bed layer filled in the building enclosure, and is characterized in that: the electric heating type purifying filter element is in a box-type polyhedral structure with a parallel air inlet surface and an air outlet surface, the air inlet surface and the air outlet surface are one or more layers of porous sieve plates or sieve meshes, and the enclosure structure comprises a sealing part and the air inlet surface and the air outlet surface; the adsorption bed layer is formed by compressing and superposing active carbon mesh cloth or porous active carbon fiber cloth through planes, any two opposite end faces or positions close to the two opposite end faces of the adsorption bed layer are provided with an electrode A and an electrode B, current can be introduced into the adsorption bed layer, a galvanic couple is arranged in the adsorption bed layer, and the temperature of the adsorption bed layer is tested in the process of electric heating; or, the appearance of the electric heating type purifying filter element is a cylinder, the enclosure structure consists of an inner cylinder, an end cover and an outer cylinder, the inner cylinder and the outer cylinder are respectively an air inlet surface and an air outlet surface, the inner cylinder is a hollow porous cylinder with one closed end, activated carbon mesh cloth or porous activated carbon fiber cloth is tightly wound on the inner cylinder to form an adsorption bed layer, the outer cylinder is made of one or more layers of net-shaped or porous materials, the end cover is used as an electrode or an electrode A and an electrode B are arranged on the upper end surface and the lower end surface of the adsorption bed layer or close to the upper end surface and the lower end surface of the adsorption bed layer, current can be introduced into the adsorption bed layer, a galvanic couple is arranged in the adsorption bed layer, and the temperature of the adsorption bed layer is tested in the electric heating process; the mesh shape of the activated carbon mesh cloth is circular, oval or polygonal, the inner diameters of any two longitudinally adjacent holes are larger than the hole walls of the two holes, and an adsorption bed layer is formed by adopting a longitudinal tight winding or plane compaction stacking mode; or the inner diameters of any two holes adjacent in the transverse direction are larger than the hole walls, and the adsorption bed layer is formed by adopting a transverse tight winding or plane compaction stacking mode; the porous activated carbon fiber cloth has round, oval or polygonal holes, the inner diameters of any two longitudinally adjacent holes are larger than the hole distance, and an adsorption bed layer is formed by adopting a longitudinal tight winding or plane compaction stacking mode; or the inner diameter of any two adjacent holes in the transverse direction is larger than the hole distance, and the adsorption bed layer is formed by adopting a transverse tight winding or plane compaction stacking mode; or the porous activated carbon fiber cloth has one or more of the shapes of long strips, X shapes, cross shapes, crescent shapes, arc shapes and L shapes, and circularly appears in a row along the longitudinal direction, the projections of any hole and the hole closest to the position in the adjacent row in the longitudinal and transverse directions are overlapped, and the adsorption bed layer is formed by adopting a longitudinal or transverse tightly winding or plane pressing and overlapping mode; or the projections of the holes in the transverse direction are overlapped, the projection length of the holes in the transverse direction is longer than the projection distance between two adjacent holes in the transverse direction in the longitudinal direction, or the projections of the holes in the longitudinal direction are overlapped, the projection length of the holes in the longitudinal direction is longer than the projection distance between two adjacent holes in the longitudinal direction in the transverse direction, and the adsorption bed layer is formed by adopting a mode of alternately and tightly winding the holes in the longitudinal direction and the transverse direction or pressing and overlapping the holes in a plane mode. The Chinese invention patent (patent application number 201510779318.9, patent name a composite VOCs adsorption concentration runner and its use method) discloses a composite VOCs adsorption concentration runner and its use method, which is characterized in that: the device is formed by coaxially and butt-jointing a molecular sieve rotating wheel and a honeycomb activated carbon rotating wheel with the same diameter, wherein the honeycomb activated carbon rotating wheel is positioned at the inlet side of VOCs (volatile organic compounds), each rotating wheel is provided with an adsorption area, a desorption area and a cooling area, a joint of the two rotating wheels is provided with an isolating ring, and the isolating ring is used for isolating the adsorption area, the desorption area and the cooling area of the two rotating wheels, and re-distributing air and reducing the wind resistance; the molecular sieve rotating wheel is obtained by attaching VOCs adsorbent on a honeycomb-shaped rotating wheel body in a spraying, leaching or dipping mode.
The prior art provides a technical solution of an enclosure structure and an electrothermal purification filter element with an air inlet surface and an air outlet surface which are one or more layers of porous sieve plates or adsorption bed layers filled with sieves for treating the actual problem of the large-air-volume VOCs waste gas, but does not provide a solution on how to replace the electrothermal purification filter element in normal production after the VOCs waste gas is saturated; in the second prior art, a technical solution of adsorption, desorption, concentration and combustion of the VOCs waste gas by adopting a molecular sieve rotating wheel and a honeycomb activated carbon rotating wheel is provided for solving the practical problem of VOCs waste gas treatment, and a technical solution of replacing the adsorbent after VOCs waste gas adsorption saturation is undoubtedly feasible by adopting a mechanical rotating wheel method, but the sealing problem must be solved by rotating wheel moving equipment, and particularly the problem of VOCs waste gas leakage caused by sealing failure under the continuous production condition in the rotating wheel replacing process is solved.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a cyclic regeneration process of an adsorbent for treating VOCs waste gas, which is characterized in that:
firstly, a flame path and a vertical path of a desorption pyrolysis furnace are adjacently built, a middle partition arch coupon divides the desorption pyrolysis furnace body into an upper region and a lower region, namely an upper desorption pyrolysis region and a lower heat storage region, the flame path is divided into an upper chamber and a lower chamber, namely a pyrolysis chamber and a heat storage chamber, the vertical path is divided into an upper chamber and a lower chamber, namely a desorption chamber and a sealing chamber, the pyrolysis chamber is filled with high-alumina ball filler, the diameter of particles of the high-alumina ball filler is 20-25 mm, an adsorbent to be desorbed is conveyed to the vertical path in the desorption pyrolysis furnace body through a feeding system, the particles of the adsorbent can smoothly fall from the vertical path and a dipleg, the high-temperature flue gas does not flee from the bottom of the dipleg and smoothly flows into a smoke discharge collection box through a grate brick through the pyrolysis chamber, the high-temperature flue gas enters a heating desorption pyrolysis furnace body from a collection flue, the temperature is kept at 260-280 ℃, the excess air coefficient of the high-temperature flue gas is adjusted, the oxygen content of the high-temperature flue gas is not lower than 14%, and the chain transmission speed of a chain transmission bed is adjusted, the adsorbent particles can be uniformly spread on the chain transmission grate bed row, and the thickness is not more than 10 mm.
And step two, the feeding system normally operates to feed materials to the vertical passage, the adsorbent continuously moves in the vertical passage from top to bottom under the action of gravity, VOCs waste gas escapes from the desorption chamber after being heated, the air injection collection box recycles the tail gas discharged from the pyrolysis chamber, the air injection collection box is in a positive pressure state, the pressure is 100-150 Pa, the tail gas sweeps the adsorbent in the desorption chamber, the adsorbent is mixed with the desorbed VOCs waste gas and sent to the pyrolysis chamber through grate bricks at the bottom of the desorption chamber for oxidative pyrolysis, the high-temperature flue gas is sent to the pyrolysis chamber through the flue collection passage and mixed with the desorbed VOCs waste gas, the excessive oxygen in the high-temperature flue gas conducts oxidative pyrolysis, the tail gas flows into the smoke exhaust collection box, the smoke exhaust collection box is in a negative pressure state, the pressure is-100-150 Pa, the waste heat is recovered and discharged to a chimney, the discharged tail gas is collected and recycled and input into the vertical passage again, and the reflux ratio is designed to be 1: 10.
And step three, the desorbed adsorbent continuously moves under the action of gravity and is uniformly spread on the chain transmission grate bed rows through the dipleg, at the moment, the temperature of the adsorbent is higher than 250 ℃, the exhaust tail gas treated by the adsorbent moving bed is introduced by the air distribution plate, VOCs pollutants in the tail gas are adsorbed and purified, the desorbed adsorbent is excellent inert gas, the activation and regeneration of the adsorbent are not influenced, the adsorption efficiency is ensured, the temperature of the tail gas is equivalent to the ambient temperature, the tail gas is excellent coolant, the tail gas flows into the gaps of the adjacent grate bed row sheets to be blown, cooled and spread on the adsorbent on the chain transmission grate bed rows, the mass and heat transfer process with the adsorbent particles is rapidly completed, and then the tail gas is discharged through a smoke outlet of the kiln box.
Step four, the adsorbent activated and regenerated by the chain transmission grate bed is sent into an adsorbent moving bed body, a distributing device and a driving device are operated, the adsorbent moves and falls under the help of gravity and a discharging disc, VOCs waste gas is introduced into a central cylinder through a supporting arch and is spread to an adsorbent bed layer through a vent hole, the adsorbent adsorbs the VOCs waste gas to be saturated, particles carried by the trapped VOCs waste gas fill gaps among the particles to cause increase of bed layer pressure drop, the adsorbent continuously supplemented and updated through the distributing device keeps a designed pressure drop value, the adsorbent moves and is collected to a cone hopper and then is discharged through a material sealing pipe, then the adsorbent is sent to a desorption pyrolysis furnace for desorption pyrolysis treatment, the adsorbent is discharged from the material sealing pipe and simultaneously used as filler sealing to prevent the VOCs waste gas from flowing out to the bottom of the adsorbent moving bed body, so that the Cs waste gas is guided to be discharged from an exhaust cylinder after being purified by the adsorbent bed layer upwards, tail gas discharged from the exhaust cylinder is led out through an induced draft system to be recycled and sent to the chain transmission grate bed, cooling, activating and spreading the adsorbent on the chain transmission grate bed row, and controlling the reflux ratio to be 1: 10-1: 5.
The inventor discovers, it lasts purifies VOCs waste gas technical problem under the continuous production condition to solve, need to pack the adsorbent and constantly keep the looks contact with VOCs waste gas, and in time break away from the contact before the saturation, can adopt the grained layer to remove bed filter theory of operation, the adsorbent top-down continuous movement under the effect of gravity promptly, VOCs waste gas constantly carries from bottom to top and keeps the looks contact and mass transfer efficiency with the adsorbent, the adsorbent removes the bed body and can finely solve sealed problem for quiet equipment, the current practical problem of continuous production has been solved to adsorbent and VOCs waste gas continuous keeping the looks contact. Because the design of the adsorbent bed layer has a certain height, how to evenly distribute air in the adsorbent bed layer and ensure that the air distribution pipeline does not cause pipeline blockage due to sedimentation and dust deposition of particulate matters carried by VOCs waste gas is another practical technical problem to be solved, therefore, a central cylinder is designed in the adsorbent moving bed body, the peripheral wall of the central cylinder is evenly distributed with inclined downward ventilation holes, the top of the central cylinder is designed to be conical, and the bottom of the central cylinder is provided with a dust leakage hole. The center cylinder is positioned at the center of the adsorbent moving bed body through a support arch, the support arch is of a hollow structure, and VOCs waste gas can be introduced into the center cylinder. The adsorbent removes to collect after falling to the awl fill, for preventing that waste gas from fighting through the awl, has designed longer material seal pipe, and the adsorbent has blockked VOCs waste gas to adsorbent removal bed body bottom scurrying as packing seal when from the discharge of material seal pipe to guide VOCs waste gas upwards to discharge from the aiutage after the adsorbent bed purifies.
The inventor finds that after VOCs waste gas is purified by the adsorbent bed, the pressure drop of the VOCs waste gas passing through the adsorbent bed is increased, while the VOCs waste gas with different concentrations and the pressure drop of the adsorbent bed have a linear relation, in other words, under the condition that the ventilation flow of the VOCs waste gas is kept unchanged, the concentration of the VOCs waste gas and the pressure drop of the adsorbent bed can form a working curve, and the purposes of efficiently utilizing the adsorbent and continuously purifying the VOCs waste gas can be realized by adjusting the feeding amount of the adsorbent.
The inventor finds that the waste gas of VOCs, which is widely discharged from the chemical industries of paint, coating, painting, lubricating oil, rubber and the like, is mainly characterized by low concentration and large air quantity, and if the waste gas is purified by a reliable method of oxidation combustion, the consumed heat energy is high, and the principle of energy conservation and economy is not met. And desorption after the adsorbent is adsorbed to saturation, on the one hand, the adsorbent is regenerated and recycled, the generation of solid waste is avoided, on the other hand, the concentration of VOCs waste gas generated by desorption is higher, the process that the concentration of the original low-concentration VOCs waste gas is realized can be understood, and the condition of oxidation combustion purification treatment is possessed.
The inventor finds that the adsorbent is the basis for realizing the adsorption and separation process of the VOCs waste gas, and the adsorbents commonly used in the field of the adsorption and separation of the VOCs waste gas at present mainly comprise molecular sieves, activated carbon, silica-alumina gel, carbon molecules and the like. In the actual use process, the activated carbon is preferably used because of the following characteristics: one is the only industrial adsorbent used to accomplish the separation and purification process that does not require prior moisture removal; secondly, the activated carbon has a very large inner surface, and can adsorb more nonpolar and low-polar organic molecules than other adsorbents; the adsorption heat or bond strength of the three kinds of activated carbon is generally lower than that of other adsorbents, so that the adsorbed molecules are easy to analyze, and the energy consumption of the adsorbents in regeneration is also lower. The waste gas of VOCs generated in the chemical industries of paint, coating, painting, lubricating oil, rubber and the like has high humidity, and typical pollutants such as benzene, paraxylene and carbon tetrachloride are nonpolar and weakly polar organic molecules and need to be adsorbed and purified by adopting activated carbon.
The inventor finds that after VOCs waste gas is adsorbed to saturation by activated carbon adsorbent, the VOCs waste gas is desorbed and regenerated by a heating methodUsually, can not regenerate through the mode with high temperature flue gas direct contact, because the active carbon ignition point that has adsorbed VOCs waste gas is lower, the active carbon is very easily by the oxidation (burning), need adopt indirect heating's mode to realize the active carbon desorption, in the desorption pyrolysis oven, the VOCs waste gas of desorption is drawn forth and is mixed with high temperature flue gas, pollutant component in the VOCs waste gas is organic molecule promptly and is oxidized (burning), generate the CO harmless to the environment2、H2O; the activated carbon moves to the chain transmission grate bed, the tail gas discharged after being treated by the adsorbent moving bed is recycled, and the activated carbon is swept and cooled by the tail gas, so that desorption and regeneration of the activated carbon adsorbent are realized.
The inventor finds that the Volatile Organic Compounds (VOCs) generally refer to volatile organic compounds with the melting point lower than room temperature and the boiling point between 50 ℃ and 250 ℃, that is, the desorption temperature of the adsorbent is higher than 250 ℃, the adsorbent must be cooled to reach room temperature after desorption, so that the desorption regeneration process is completed, and the tail gas discharged after being treated by the adsorbent moving bed is recycled as the coolant, so that the tail gas is utilized at a high value and is more economical.
The inventor finds that the VOCs waste gas adsorbent desorption pyrolysis furnace is designed with a flame path and a vertical path, the flame path is used for high-temperature flue gas to flow, the vertical path is used for the adsorbent to move and fall, and the flame path and the vertical path are adjacently built. The middle partition arch coupon divides the desorption pyrolysis furnace body into an upper region and a lower region, namely an upper region desorption pyrolysis region and a lower region heat accumulation region. The corresponding flame path is also divided into an upper chamber and a lower chamber, the lower chamber is a heat storage chamber and is responsible for introducing high-temperature flue gas of the flue collecting channel into the upper chamber, the upper chamber is a pyrolysis chamber and accumulates high-alumina ball particles, the high-temperature flue gas is mixed with the desorbed VOCs waste gas introduced through grate bricks at the bottom of the pyrolysis chamber, the high-temperature flue gas is oxidized and pyrolyzed by excessive oxygen in the high-temperature flue gas, tail gas flows into a smoke exhaust collection box, and the tail gas is discharged to a chimney after waste heat recovery; corresponding perpendicular way of the same reason also divide into two upper and lower rooms, and the lower chamber is the seal chamber, and the effect prevents that the VOCs waste gas of desorption from erecting the way bottom and scurrying, and the upper chamber is the desorption chamber, is connected with feed system, and top-down continuous movement in perpendicular way is said to the adsorbent under the effect of gravity, and feed system includes the storage tank, annotates wind collection box and introduces the tail gas of the emission of flame path and sweeps the adsorbent, mixes with the VOCs waste gas of desorption again and send to pyrolysis chamber oxidation pyrolysis through desorption room bottom grate brick.
The inventor finds that the ignition point of the activated carbon adsorbing the VOCs waste gas is lower, the activated carbon is very easy to be oxidized (combusted), activated carbon desorption is realized by adopting an indirect heating mode, in a desorption pyrolysis furnace, a flame path and a vertical path are adjacently built, high-temperature flue gas flows through the flame path, the activated carbon heating of the vertical path is realized, the desorbed VOCs waste gas is sent to a pyrolysis chamber through a grate brick at the bottom of the desorption chamber for oxidative pyrolysis, the purged airflow comes from the tail gas discharged from the flame path, the tail gas discharged from the flame path is inert gas with lower oxygen content, the activated carbon is ensured not to be oxidized and keep activity, and high-value utilization is realized while the recycling of the tail gas discharged from the flame path reduces pollutant discharge.
The inventor finds that the adsorbent after heating desorption must be cooled to reach room temperature to release adsorption heat so as to complete the desorption regeneration process, the cooling airflow comes from the tail gas discharged after the adsorbent moving bed treatment, and the recycling of the tail gas discharged after the adsorbent moving bed treatment is mainly due to the following reasons: firstly, the tail gas is discharged to the environment after being treated by the adsorbent moving bed, VOCs pollutants in the tail gas are adsorbed and purified, and the tail gas is excellent inert gas for the adsorbent after being desorbed and has no influence on the activation and regeneration of the adsorbent, thereby ensuring the adsorption efficiency; secondly, the temperature of the tail gas is equivalent to the ambient temperature, and the tail gas is an excellent coolant. The two characteristics enable the tail gas to be in direct contact with the adsorbent after heating desorption for full mass and heat transfer.
The inventor finds that, because the adsorbent needs to bear the scouring of air flow and the change of temperature and pressure, and needs higher strength and wear resistance, a cooling and activating device is designed to avoid the mutual collision and friction of adsorbent particles as much as possible so as to achieve the purpose of preventing the adsorbent particles from being broken, and a chain transmission grate bed is one of the solutions capable of solving the problems in the prior art. The chain transmission grate bed is provided with a material leg and a chain transmission grate bed body. The desorbed adsorbent continuously moves under the action of gravity and is uniformly spread on a chain transmission grate bed row through a dipleg, and meanwhile, the adsorbent is used as a filler in the dipleg to play a sealing role, so that the desorbed VOCs waste gas pollutants are prevented from escaping from the dipleg. The kiln box and the chain transmission grate bed row are designed on the chain transmission grate bed body, the kiln box is provided with a smoke exhaust port, the chain transmission grate bed row comprises a chain wheel, a chain, a grate bed row and a wind distribution plate, the grate bed row comprises transverse pins and grate bed row sheets, the grate bed row sheets penetrate through the transverse pins one by one to be arranged into a string, the front grate bed row sheet and the rear grate bed row sheet are connected in a staggered and corresponding mode through the transverse pins to form the grate bed row, two ends of the transverse pins are fixedly connected to the chain, and the chain wheel drives the chain to rotate so as to drive the grate bed. The exhaust gas treated by the adsorbent moving bed is introduced by the air distribution plate, is sent into the kiln box through the gap between the adjacent grate bed row sheets, blows and cools the adsorbent spread on the chain transmission grate bed row, and is exhausted through the exhaust port.
Compared with the prior art, the invention at least has the following advantages: firstly, Volatile Organic Compounds (VOCs) generally refer to volatile organic compounds with a melting point lower than room temperature and a boiling point between 50 and 250 ℃, that is, the desorption temperature of an adsorbent is higher than 250 ℃, the adsorbent must be cooled to reach room temperature after desorption, so that the desorption regeneration process is completed, and the discharged tail gas after being treated by an adsorbent moving bed is recycled as a coolant, so that the tail gas is used at a high value and is more economic; secondly, the ignition point of the activated carbon adsorbing the VOCs waste gas is low, the activated carbon is very easy to oxidize (burn), the activated carbon desorption is realized by adopting an indirect heating mode, a flame path and a vertical path are adjacently built in a desorption pyrolysis furnace, high-temperature flue gas flows through the flame path, the activated carbon of the vertical path is heated, the desorbed VOCs waste gas is sent to a pyrolysis chamber through a grate brick at the bottom of the desorption chamber for oxidative pyrolysis, the swept airflow comes from the tail gas discharged from the flame path, and the tail gas discharged from the flame path is inert gas with low oxygen content, so that the activated carbon is ensured not to be oxidized and keep activity, and the recycling of the tail gas discharged from the flame path reduces the emission of pollutants and simultaneously realizes high-value utilization; thirdly, the adsorbent after heating desorption must be cooled to reach room temperature to release adsorption heat so as to complete the desorption regeneration process, the cooling airflow comes from the tail gas discharged after the adsorbent moving bed treatment, and the recycling of the tail gas discharged after the adsorbent moving bed treatment is selected mainly has the following main reasons: firstly, the tail gas is discharged to the environment after being treated by the adsorbent moving bed, VOCs pollutants in the tail gas are adsorbed and purified, and the tail gas is excellent inert gas for the adsorbent after being desorbed and has no influence on the activation and regeneration of the adsorbent, thereby ensuring the adsorption efficiency; secondly, the temperature of the tail gas is equivalent to the ambient temperature, and the tail gas is an excellent coolant. The two characteristics enable the tail gas to be in direct contact with the adsorbent after heating desorption for sufficient mass and heat transfer; and fourthly, adopting a working principle of a granular layer moving bed filter, namely continuously moving the adsorbent from top to bottom under the action of gravity, continuously conveying VOCs waste gas from bottom to top to keep the contact and mass transfer efficiency with the adsorbent, well solving the sealing problem for static equipment by a movable adsorbent bed body, and continuously keeping the contact between the adsorbent and the VOCs waste gas to solve the existing practical problem of continuous production.
Drawings
FIG. 1 is a schematic view of the structure of the adsorbent for treating VOCs waste gas in the present invention.
FIG. 2 is a schematic view of the arrangement of the A-A section of the adsorbent for treating VOCs waste gas in the recycling process of the invention.
FIG. 3 is a schematic diagram of a partial enlarged structure B of the cyclic regeneration process of the adsorbent for treating VOCs waste gas according to the present invention.
FIG. 4 is a schematic diagram of a partial enlarged structure C of the cyclic regeneration process of the adsorbent for treating VOCs waste gas according to the present invention.
FIG. 5 is a schematic diagram of a partial enlarged structure D of the cyclic regeneration process of the adsorbent for treating VOCs waste gas according to the present invention.
FIG. 6 is a schematic view of the arrangement of E-E section of the adsorbent recycling process for treating VOCs waste gas according to the present invention.
FIG. 7 is a schematic diagram of a partial enlarged structure of F in the cyclic regeneration process of the adsorbent for treating VOCs waste gas according to the present invention.
I-desorption pyrolysis furnace II-chain transmission grate bed III-induced air system IV-adsorbent moving bed
1-feeding system 2-storage tank 3-air injection header 4-smoke exhaust header
5-desorption pyrolysis furnace body 6-vertical passage 7-fire passage 8-grate brick 9-middle partition arch coupon
10-flue collection channel 11-pyrolysis chamber 12-desorption chamber 13-heat storage chamber 14-sealing chamber
15-dipleg 16-chain transmission grate bed body 17-smoke outlet 18-kiln box 19-chain
20-air distribution plate 21-chain wheel 22-chain transmission grate row 23-grate row sheet 24-transverse pin
25-grate bar 26-drive device 27-discharge tray 28-support arch
29-adsorbent moving bed 30-central cylinder 31-vent 32-distributor
33-exhaust funnel 34-material sealing pipe 35-cone 36-ash leakage port.
Detailed Description
The invention is further described with reference to the following detailed description of embodiments and drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the cyclic regeneration process of the adsorbent for treating the waste gas of the VOCs is characterized in that:
firstly, a flame path 7 and a vertical path 6 of a desorption pyrolysis furnace I are adjacently built, a middle partition arch coupon 9 divides a desorption pyrolysis furnace body 5 into an upper region and a lower region, namely an upper region desorption pyrolysis region and a lower region heat accumulation region, the flame path 7 is divided into an upper chamber and a lower chamber, namely a pyrolysis chamber 11 and a heat accumulation chamber 13, the vertical path 6 is divided into an upper chamber and a lower chamber, namely a desorption chamber 12 and a sealing chamber 14, the pyrolysis chamber 11 is filled with high-aluminum ball filler, the diameter of the high-aluminum ball filler is 20-25 mm, an adsorbent to be desorbed is conveyed to the vertical path 6 in the desorption pyrolysis furnace body 5 through a feeding system 1, the adsorbent particles can smoothly fall from the vertical path 6 and a dipleg 15 and ensure that high-temperature flue gas does not flee from the bottom of the dipleg 15 and smoothly flows into a smoke exhaust collection box 4 through a grate brick 8 through the pyrolysis chamber 11, the high-temperature flue gas enters a heating desorption pyrolysis furnace body 5 from a collection flue 10 and keeps the temperature at 260-280 ℃, and the excess air coefficient of the high-temperature flue gas is adjusted, the oxygen content is not lower than 14%, the rotating speed of a chain wheel 21 of the chain transmission grate bed II is adjusted, so that the adsorbent particles can be uniformly spread on a chain transmission grate bed row 22, and the thickness is not more than 10 mm.
Step two, the feeding system 1 is normally operated to feed materials to the vertical channel 6, the adsorbent continuously moves in the vertical channel 6 from top to bottom under the action of gravity, VOCs waste gas escapes from the desorption chamber 12 after being heated, the air injection collection box 3 recycles the tail gas discharged from the pyrolysis chamber 11, the air injection collection box 3 is in a positive pressure state, the pressure is 100-150 Pa, the adsorbent in the desorption chamber 12 is swept by the tail gas, the tail gas and the desorbed VOCs waste gas are mixed and sent to the pyrolysis chamber 11 through a grate brick 8 at the bottom of the desorption chamber 12 for oxidative pyrolysis, the high-temperature flue gas is sent to the pyrolysis chamber 11 through a flue collection channel 10 to be mixed with the desorbed VOCs waste gas, the excessive oxygen in the high-temperature flue gas oxidizes and pyrolyzes the high-temperature flue gas, the tail gas flows into a smoke discharge collection box 4, the smoke discharge collection box 4 is in a negative pressure state, the pressure is-100-150 Pa, the high-temperature flue gas is recycled and then discharged to a chimney, the reflux ratio was designed to be 1: 10.
And step three, the desorbed adsorbent continuously moves under the action of gravity and is uniformly spread on the chain transmission grate bed row 22 through the dipleg 15, at the moment, the temperature of the adsorbent is higher than 250 ℃, the exhaust tail gas treated by the adsorbent moving bed IV is introduced through the air distribution plate 20, VOCs pollutants in the tail gas are adsorbed and purified, the desorbed adsorbent is excellent inert gas and has no influence on the activation and regeneration of the adsorbent, the adsorption efficiency is ensured, the temperature of the tail gas is equivalent to the ambient temperature and is excellent coolant, the tail gas flows into the gap of the adjacent grate bed row sheets 23 to be purged, cooled and spread on the chain transmission grate bed row 22, the process of mass and heat transfer with the adsorbent particles is rapidly completed, and then the tail gas is discharged through the smoke outlet 17 of the box 18.
Step four, the adsorbent activated and regenerated by the chain transmission grate bed II is sent into an adsorbent moving bed body 29, a distributing device 32 and a driving device 26 are operated, the adsorbent moves and falls under the help of gravity and a discharging disc 27, VOCs waste gas is introduced into a central cylinder 30 through a supporting arch 28 and is spread to an adsorbent bed layer through a vent hole 31, the adsorbent adsorbs the VOCs waste gas to be saturated, particles carried by the trapped VOCs waste gas are filled in gaps among the particles to cause the increase of bed layer pressure drop, the adsorbent continuously supplemented and updated through the distributing device 32 keeps a designed pressure drop value, the adsorbent moves and is collected into a cone hopper 35 and then is discharged through a material sealing pipe 34, then the adsorbent is sent to a desorption pyrolysis furnace I for desorption pyrolysis treatment, the adsorbent is discharged from the material sealing pipe 34 and is used as filler sealing to prevent the VOCs waste gas from flowing out to the bottom of the adsorbent moving bed body 29, so that the VOCs waste gas is guided to upwards to be purified through an exhaust pipe 33 and then discharged from the adsorbent bed layer, and leading out the tail gas discharged from the exhaust funnel 33 through an induced draft system III for recycling, sending the tail gas into a chain transmission grate bed II, cooling, activating and spreading the adsorbent on the chain transmission grate bed row 22, and controlling the reflux ratio to be 1: 10-1: 5.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (6)

1. A cyclic regeneration process of an adsorbent for treating VOCs waste gas is characterized by comprising the following steps: firstly, a flame path and a vertical path of a desorption pyrolysis furnace are adjacently built, a middle partition arch coupon divides a desorption pyrolysis furnace body into an upper region and a lower region, namely an upper desorption pyrolysis region and a lower heat storage region, the flame path is divided into an upper chamber and a lower chamber, namely a pyrolysis chamber and a heat storage chamber, the vertical path is divided into an upper chamber and a lower chamber, namely a desorption chamber and a sealing chamber, the pyrolysis chamber is filled with high-alumina ball filler, the diameter of the high-alumina ball filler particles is 20-25 mm, an adsorbent to be desorbed is conveyed to the vertical path in the desorption pyrolysis furnace body through a feeding system, the adsorbent particles can smoothly fall from the vertical path and legs, high-temperature flue gas is ensured not to be fleed from the bottoms of the legs and smoothly flows into a smoke exhaust collection box through a grate brick and the pyrolysis chamber, the rotating speed of a chain transmission grate bed is adjusted, so that the adsorbent particles can be uniformly paved on the chain transmission grate bed row, and the thickness is not more than 10 mm; step two, the feeding system normally operates to feed materials to the vertical passage, the adsorbent continuously moves in the vertical passage from top to bottom under the action of gravity, VOCs waste gas escapes from the desorption chamber when being heated, the air injection collection box recycles the tail gas discharged by the pyrolysis chamber, the tail gas sweeps the adsorbent in the desorption chamber, the adsorbent is mixed with the desorbed VOCs waste gas and is sent to the pyrolysis chamber through a grate brick at the bottom of the desorption chamber for oxidative pyrolysis, high-temperature flue gas is sent to the pyrolysis chamber through the smoke collection passage and is mixed with the desorbed VOCs waste gas, the excessive oxygen in the high-temperature flue gas oxidizes and pyrolyzes the high-temperature flue gas, the tail gas flows into the smoke discharge collection box, and the tail gas is discharged to a chimney after waste heat recovery; step three, the desorbed adsorbent continuously moves under the action of gravity and is uniformly spread on a chain transmission grate bed row through a dipleg, at the moment, the temperature of the adsorbent is higher than 250 ℃, a wind distribution plate introduces the exhaust tail gas treated by an adsorbent moving bed, VOCs pollutants in the tail gas are adsorbed and purified, the desorbed adsorbent is excellent inert gas, has no influence on the activation and regeneration of the adsorbent, ensures the adsorption efficiency, has the temperature equivalent to the environmental temperature, is excellent coolant, flows into gaps of adjacent grate bed row sheets to blow, cool and spread the adsorbent on the chain transmission grate bed row, quickly completes the process of mass and heat transfer with the adsorbent particles, and then is discharged through a smoke outlet of a kiln box; and step four, the adsorbent activated and regenerated by the chain transmission grate bed is sent to an adsorbent moving bed body, a distributing device and a driving device are operated, the adsorbent moves and falls under the help of gravity and an unloading disc, the VOCs waste gas is introduced into a central cylinder through a supporting arch and is spread to an adsorbent bed layer through a vent hole, the adsorbent adsorbs the VOCs waste gas and tends to be saturated, particles carried by the trapped VOCs waste gas fill gaps among the particles to increase the pressure drop of the bed layer, the adsorbent continuously supplemented and updated through the distributing device keeps a designed pressure drop value, the adsorbent moves and is collected to a cone hopper and then is discharged through a material sealing pipe, then the adsorbent is sent to a desorption pyrolysis furnace for desorption pyrolysis treatment, and the adsorbent is discharged from the material sealing pipe and also used as a filler seal to prevent the VOCs waste gas from flowing out to the bottom of the adsorbent moving bed body, so that the VOCs waste gas is guided to be discharged from an exhaust pipe after being purified by the adsorbent bed layer.
2. The cyclic regeneration process of adsorbents for treating VOCs in exhaust according to claim 1, wherein: the air injection header is in a positive pressure state, and the pressure is 100-150 Pa.
3. The cyclic regeneration process of adsorbents for treating VOCs in exhaust according to claim 1, wherein: and (3) enabling the high-temperature flue gas to enter a heating desorption pyrolysis furnace body from a flue collecting channel, keeping the temperature of the high-temperature flue gas at 260-280 ℃, and adjusting the excess air coefficient of the high-temperature flue gas to enable the oxygen content of the high-temperature flue gas to be not less than 14%.
4. The cyclic regeneration process of adsorbents for treating VOCs in exhaust according to claim 1, wherein: the smoke discharging header is in a negative pressure state, and the pressure is-100-150 Pa.
5. The cyclic regeneration process of adsorbents for treating VOCs in exhaust according to claim 1, wherein: the discharged tail gas is collected and recycled by the air injection header and is input into the vertical channel again, and the reflux ratio is designed to be 1: 10.
6. The cyclic regeneration process of adsorbents for treating VOCs in exhaust according to claim 1, wherein: and leading out the tail gas discharged from the exhaust funnel through an induced draft system for recycling, sending the tail gas into the chain transmission grate bed, cooling, activating and spreading the adsorbent on the row of the chain transmission grate bed, and controlling the reflux ratio to be 1: 10-1: 5.
CN201910182003.4A 2019-03-11 2019-03-11 Cyclic regeneration process of adsorbent for treating VOCs waste gas Active CN109675403B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910182003.4A CN109675403B (en) 2019-03-11 2019-03-11 Cyclic regeneration process of adsorbent for treating VOCs waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910182003.4A CN109675403B (en) 2019-03-11 2019-03-11 Cyclic regeneration process of adsorbent for treating VOCs waste gas

Publications (2)

Publication Number Publication Date
CN109675403A CN109675403A (en) 2019-04-26
CN109675403B true CN109675403B (en) 2021-08-31

Family

ID=66184283

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910182003.4A Active CN109675403B (en) 2019-03-11 2019-03-11 Cyclic regeneration process of adsorbent for treating VOCs waste gas

Country Status (1)

Country Link
CN (1) CN109675403B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113203144B (en) * 2021-04-27 2022-04-01 深圳宏一建设集团有限公司 Laboratory gas on-line monitoring and intelligent control system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85103470A (en) * 1985-04-29 1986-10-29 浙江省林业科学研究所 The activation method of gac and equipment
CN203582805U (en) * 2013-11-29 2014-05-07 杜晋安 Outer-heating lignite dry distillation furnace
CN105013289A (en) * 2015-07-04 2015-11-04 上海煜工环保科技有限公司 Pressure-equalizing moving bed type activated coke adsorption tower
CN207899156U (en) * 2018-01-25 2018-09-25 四川思达能环保科技有限公司 A kind of copper anode mud baking flue gas dust-extraction unit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7229597B2 (en) * 2003-08-05 2007-06-12 Basfd Catalysts Llc Catalyzed SCR filter and emission treatment system
CN103420368B (en) * 2013-07-20 2015-04-29 大连理工大学 Integrated device and method for continuous preparation of activated carbon
CN103933854A (en) * 2014-02-25 2014-07-23 中国科学院生态环境研究中心 Fluidized bed adsorption and desorption apparatus and method of organic exhaust gas
CN104190389B (en) * 2014-08-27 2017-04-12 中冶长天国际工程有限责任公司 Thermal regeneration method and device of activated carbon
CN205127970U (en) * 2015-11-19 2016-04-06 浙江省林业科学研究院 Vertical continuous regenerator of useless active carbon
JP6718136B2 (en) * 2016-03-17 2020-07-08 三菱自動車工業株式会社 Exhaust purification device
CN207735011U (en) * 2017-10-20 2018-08-17 刘迪 Saturated activity charcoal adsorbs situ regeneration system
CN207913454U (en) * 2018-01-11 2018-09-28 广东熙霖节能环保工程咨询服务有限公司 A kind of activated carbon hot gas desorption and regeneration system
CN108393066A (en) * 2018-01-25 2018-08-14 华北电力大学 Activated coke absorption regeneration integrated rotary formula device
CN208212846U (en) * 2018-02-05 2018-12-11 无锡市华贝洁环保科技有限公司 A kind of active carbon regenerating unit
CN108854448A (en) * 2018-07-06 2018-11-23 江苏中科睿赛污染控制工程有限公司 A kind of mobile adsorption desorption of VOCs-catalysis burning linkage operation apparatus
CN108940241B (en) * 2018-07-19 2021-03-09 中国科学院过程工程研究所 Activated carbon regeneration tower and regeneration method
CN108940243B (en) * 2018-08-08 2021-05-14 国家能源投资集团有限责任公司 Active coke analysis device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85103470A (en) * 1985-04-29 1986-10-29 浙江省林业科学研究所 The activation method of gac and equipment
CN203582805U (en) * 2013-11-29 2014-05-07 杜晋安 Outer-heating lignite dry distillation furnace
CN105013289A (en) * 2015-07-04 2015-11-04 上海煜工环保科技有限公司 Pressure-equalizing moving bed type activated coke adsorption tower
CN207899156U (en) * 2018-01-25 2018-09-25 四川思达能环保科技有限公司 A kind of copper anode mud baking flue gas dust-extraction unit

Also Published As

Publication number Publication date
CN109675403A (en) 2019-04-26

Similar Documents

Publication Publication Date Title
CN109675410B (en) Operation method of cyclic regeneration process system for treating VOCs waste gas
CN109745824B (en) VOCs waste gas treatment recycling process system
KR102053559B1 (en) Activated Carbon Flue Gas Purifier and Flue Gas Purification Method
CN208809745U (en) A kind of molecular sieve adsorption runner system handling exhaust gas
CN210356346U (en) Plug-in board formula glance coal purifier
CN107551756A (en) Prevent the flue gas desulfurization and denitration method and device of corrosion
CN112657330A (en) Volatile organic waste gas treatment process and device in tire industry
CN205760451U (en) Activated carbon method smoke eliminator
CN109675403B (en) Cyclic regeneration process of adsorbent for treating VOCs waste gas
CN105536705B (en) A kind of useless charcoal regenerative system
CN102716622B (en) Integrated bag-type dust removal and fluidized adsorption device
CN109745823B (en) VOCs waste gas adsorbent desorption pyrolysis process
CN109772096B (en) Pitch cigarette purifier
CN206424781U (en) Horizontal modularization flue gas desulfurization and denitrification absorption regeneration integral system
CN210079170U (en) Asphalt smoke purifying device
CN109745825B (en) VOCs waste gas adsorbent regeneration pyrolysis furnace
CN115382344B (en) Rubber flue gas treatment system
CN109745822B (en) VOCs waste gas adsorbent desorption pyrolysis oven
CN109675404B (en) Operation method of VOCs waste gas adsorbent desorption pyrolysis furnace
CN108114575B (en) Separated waste gas treatment device and treatment method
CN108744762A (en) A kind of dedusting-adsorption desorption combination integrated apparatus and its working method
CN109718633A (en) A kind of improvement low concentration VOCs exhaust gas moving bed
CN215570498U (en) Chlorine-containing waste gas purification system
CN106563351A (en) Vertical modular flue gas desulfurization and denitrification adsorption regeneration integration system
CN214019732U (en) Prilling tower and purifier thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20210812

Address after: No. 62 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province

Applicant after: JIANGSU JIAXIN ENVIRONMENTAL ENGINEERING Co.,Ltd.

Address before: 362000 the 2 floor of 32 new gate Street and 1916 Creative Industrial Park, Licheng District, Quanzhou, Fujian, China, 1916

Applicant before: Yang Song

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant