CN109297023B - Waste incineration system - Google Patents
Waste incineration system Download PDFInfo
- Publication number
- CN109297023B CN109297023B CN201710931971.1A CN201710931971A CN109297023B CN 109297023 B CN109297023 B CN 109297023B CN 201710931971 A CN201710931971 A CN 201710931971A CN 109297023 B CN109297023 B CN 109297023B
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- waste
- rotary kiln
- dust collector
- kiln incinerator
- bag type
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- 238000004056 waste incineration Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000002918 waste heat Substances 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims description 54
- 239000002699 waste material Substances 0.000 claims description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 31
- 239000003546 flue gas Substances 0.000 claims description 30
- 238000003860 storage Methods 0.000 claims description 30
- 239000002910 solid waste Substances 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000003595 mist Substances 0.000 claims description 11
- 230000001502 supplementing effect Effects 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 230000005684 electric field Effects 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 claims description 4
- 230000026058 directional locomotion Effects 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000010813 municipal solid waste Substances 0.000 abstract description 8
- 239000002920 hazardous waste Substances 0.000 abstract description 6
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000005200 wet scrubbing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/006—General arrangement of incineration plant, e.g. flow sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/60—Separating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a waste incineration system, which comprises a compatibility system, an incineration system, a waste heat utilization system, an ignition and auxiliary combustion system, a tail gas treatment system and an air supply system, and has the beneficial effects that: the hazardous waste garbage can be classified for treatment, solid-liquid separation is realized, and trace organic matters and dioxin in the smoke can be fully decomposed and completely burnt through the full combustion of the rotary kiln incinerator and the secondary combustion chamber, and the clean of discharged tail gas can be ensured through a subsequent waste heat utilization system and a tail gas treatment system, so that the hazardous waste garbage is free from environmental pollution, compact in overall structure and capable of effectively treating the hazardous waste garbage.
Description
Technical Field
The invention relates to the technical field of waste treatment, in particular to a waste incineration system.
Background
The waste is solid waste produced in daily life and production of human beings, and has the advantages of large discharge amount, complex and various components, pollution, resource and sociality, and harmless, resource, reduction and socialization treatment are required, if the waste cannot be properly treated, the environment is polluted, the environmental sanitation is affected, the resource is wasted, the production and life safety is damaged, and the social harmony is damaged. The waste treatment is to rapidly remove the garbage, perform innocent treatment and finally reasonably utilize the garbage. The waste treatment methods widely used today are sanitary landfills, high temperature composting and incineration. The waste can generate a large amount of pollutants in the combustion process, and the existing waste incineration system is not completely incinerated and has large pollution.
Disclosure of Invention
The present invention is directed to a waste incineration system, which solves the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a waste incineration system comprises a compatibility system, an incineration system, a waste heat utilization system, an ignition and auxiliary combustion system, a tail gas treatment system and an air supply system;
The incineration system comprises a rotary kiln incinerator and a secondary combustion chamber, wherein a smoke outlet of the rotary kiln incinerator is connected with the secondary combustion chamber through a smoke pipeline, a water seal scraper slag scooper for scooping slag is further arranged at the bottom of the rotary kiln incinerator, a grid plate is arranged at the upper part of the water seal scraper slag scooper, and ignition and auxiliary combustion systems are arranged in the rotary kiln incinerator and the secondary combustion chamber;
the waste heat utilization system comprises a waste heat boiler and a semi-dry quenching absorption tower which are connected with each other, a smoke exhaust pipeline of the secondary combustion chamber is connected with the waste heat boiler, and flue gas after heat exchange with the waste heat boiler is introduced into the semi-dry quenching absorption tower through the pipeline;
The tail gas treatment system comprises a dry reactor, an ejector and an off-line gas box pulse bag type dust collector, wherein the dry reactor is connected with a flue gas outlet of a semi-dry quenching absorption tower, the ejector for ejecting powder activated carbon and slaked lime is arranged in the dry reactor, a gas outlet of the dry reactor is connected with the off-line gas box pulse bag type dust collector, and the dry reactor discharges tail gas into the atmosphere through a chimney;
the air supply system comprises a primary oxygen supplementing fan and a secondary oxygen supplementing fan which are respectively connected with the rotary kiln incinerator and the secondary combustion chamber through a supplementing pipeline;
The system comprises a solid waste matching mechanism, a waste liquid matching mechanism and a difficult-to-match substance treatment mechanism, wherein the solid waste matching mechanism comprises a plurality of storage tanks, a crane, a metering bin, a plate feeder and a feeding device, the storage tanks are used for storing solid waste, the solid waste is grabbed into a feed hopper of a rotary kiln incinerator by the crane, the feed hopper of the rotary kiln incinerator is connected with the metering bin through the plate feeder, the metering bin is used for metering the weight of the solid waste, the metering bin is provided with the feeding device for pushing the solid waste into the rotary kiln incinerator, and the feeding device is a hydraulic feeding push rod;
the waste liquid compatibility mechanism comprises a plurality of storage tanks for storing waste liquid, wherein the storage tanks are divided into a low-heat-value waste liquid storage tank, a high-heat-value waste liquid storage tank, a viscous waste liquid storage tank and a corrosive organic solvent conveying pipe according to the property of the waste liquid, the low-heat-value waste liquid storage tank is connected with a secondary combustion chamber through a pipeline, the high-heat-value waste liquid storage tank is connected with a rotary kiln incinerator and the secondary combustion chamber through a pipeline, pumps and metering devices are arranged on the pipelines, the viscous waste liquid storage tank is connected with the rotary kiln incinerator through a heating atomization device, the corrosive organic solvent conveying pipe is directly connected with the rotary kiln incinerator, and a diaphragm pump is arranged on the corrosive organic solvent conveying pipe;
the difficult-to-match material treatment mechanism comprises an emergency feeding hopper which is directly connected with the rotary kiln incinerator.
As a further scheme of the invention: the furnace chamber of the waste heat boiler is also provided with a non-catalytic reduction SNCR interface.
As still further aspects of the invention: and a CEMS flue gas on-line monitoring system for detecting tail gas is also arranged on the chimney.
As still further aspects of the invention: PTFE filter materials are arranged in the off-line gas tank pulse bag type dust collector, an ash bucket electric tracing device is also arranged in the off-line gas tank pulse bag type dust collector, and a heat preservation skin is also arranged outside the off-line gas tank pulse bag type dust collector.
As still further aspects of the invention: the off-line gas tank pulse bag type dust collector is connected with the wet scrubbing tower through a pipeline, the wet scrubbing tower is connected with the wet electric dust collector, and circulating alkali liquor is introduced into the wet scrubbing tower through an alkali liquor circulating tank.
As still further aspects of the invention: the wet electric dust collector is connected with a flue gas heater, the flue gas heater heats tail gas through steam, the steam is generated by a waste heat boiler, and the flue gas heater discharges the heated tail gas to the atmosphere through a chimney by a draught fan.
Compared with the prior art, the invention has the beneficial effects that: the hazardous waste garbage can be classified for treatment, solid-liquid separation is realized, and trace organic matters and dioxin in the smoke can be fully decomposed and completely burnt through the full combustion of the rotary kiln incinerator and the secondary combustion chamber, and the clean of discharged tail gas can be ensured through a subsequent waste heat utilization system and a tail gas treatment system, so that the hazardous waste garbage is free from environmental pollution, compact in overall structure and capable of effectively treating the hazardous waste garbage.
Drawings
Fig. 1 is a schematic diagram of a waste incineration system.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, in an embodiment of the present invention, a waste incineration system includes a compatibility system, an incineration system, a waste heat utilization system, an ignition and auxiliary combustion system, a tail gas treatment system and an air supply system;
The incineration system comprises a rotary kiln incinerator and a secondary combustion chamber, wherein a smoke outlet of the rotary kiln incinerator is connected with the secondary combustion chamber through a smoke pipeline, high-temperature smoke in the rotary kiln incinerator is combusted again in the secondary combustion chamber, so that trace organic matters and dioxin in the smoke are fully decomposed and completely incinerated, dangerous waste entering the incineration system is fully combusted, a water-sealed scraper slag conveyor for slag collection is further arranged at the bottom of the rotary kiln incinerator, 3-10 mm glass-like particles are formed after residues are rapidly cooled by water, the residues can be collected, solidified and buried by using a hopper, a grid plate is arranged at the upper part of the water-sealed scraper slag conveyor, the water-sealed scraper slag conveyor is prevented from being damaged by massive ash, ignition and auxiliary combustion systems are arranged in the rotary kiln incinerator and the secondary combustion chamber, and are not in redundant description;
The waste heat utilization system comprises a waste heat boiler and a semi-dry quenching absorption tower which are connected with each other, a smoke exhaust pipeline of the secondary combustion chamber is connected with the waste heat boiler, high-temperature flue gas fully combusted in the secondary combustion chamber enters the waste heat boiler through a flue to recover heat, the waste heat boiler recovers part of heat energy in the flue gas, generated steam is used for internal use and condensation and recycling, and the flue gas subjected to heat exchange with the waste heat boiler is introduced into the semi-dry quenching absorption tower through the pipeline to perform heat exchange cooling on the high-temperature flue gas again;
the tail gas treatment system comprises a dry reactor, an ejector and an off-line gas tank pulse bag type dust collector, wherein the dry reactor is connected with a flue gas outlet of a semi-dry quenching absorption tower, the ejector for ejecting powder activated carbon and slaked lime is arranged in the dry reactor, a gas outlet of the dry reactor is connected with the off-line gas tank pulse bag type dust collector, the powder activated carbon and the slaked lime are ejected into the dry reactor through the ejector to adsorb and remove heavy metals, dioxin and the like in the flue gas, the discharged flue gas enters the off-line gas tank pulse bag type dust collector to remove dust and further adsorb the heavy metals, and the dry reactor discharges the tail gas into the atmosphere through a chimney;
The air supply system comprises a primary oxygen supplementing fan and a secondary oxygen supplementing fan, wherein the primary oxygen supplementing fan and the secondary oxygen supplementing fan are respectively connected with the rotary kiln incinerator and the secondary combustion chamber through a supplementing pipeline, so that fresh air is provided for combustion, and waste can be fully combusted;
The system comprises a solid waste matching mechanism, a waste liquid matching mechanism and a difficult-to-match substance treatment mechanism, wherein the solid waste matching mechanism comprises a plurality of storage tanks, a crane, a metering bin, a plate feeder and a feeding device, the storage tanks are used for storing solid waste, the solid waste is grabbed into a feed hopper of a rotary kiln incinerator by the crane, the feed hopper of the rotary kiln incinerator is connected with the metering bin through the plate feeder, the metering bin is used for metering the weight of the solid waste, the metering bin is provided with the feeding device for pushing the solid waste into the rotary kiln incinerator, and the feeding device is a hydraulic feeding push rod;
The waste liquid compatibility mechanism comprises a plurality of storage tanks for storing waste liquid, wherein the storage tanks are divided into a low-heat-value waste liquid storage tank, a high-heat-value waste liquid storage tank, a viscous waste liquid storage tank and a corrosive organic solvent conveying pipe according to the property of the waste liquid, the low-heat-value waste liquid storage tank is connected with a secondary combustion chamber through a pipeline, the high-heat-value waste liquid storage tank is connected with a rotary kiln incinerator and the secondary combustion chamber through a pipeline, pumps and metering devices are arranged on the pipelines, the viscous waste liquid storage tank is connected with the rotary kiln incinerator through a heating atomization device, the corrosive organic solvent conveying pipe is directly connected with the rotary kiln incinerator, and a diaphragm pump is arranged on the corrosive organic solvent conveying pipe to carry out differential treatment on different types of waste liquid;
The refractory material treatment mechanism comprises an emergency charging hopper which is directly connected with the rotary kiln incinerator, and waste packages (woven bags and the like) and waste rags and other refractory wastes can be directly charged into the rotary kiln incinerator through the emergency charging hopper for combustion.
The furnace chamber of the waste heat boiler is also provided with a non-catalytic reduction SNCR interface in advance for adding a denitrification system in the later period.
And the chimney is also provided with a CEMS flue gas online monitoring system for detecting the tail gas, and the CEMS flue gas online monitoring system is mainly used for monitoring the contents of smoke dust, sulfur dioxide, nitrogen oxides, hydrogen chloride, ammonia, carbon monoxide and carbon dioxide in the tail gas.
The off-line air box pulse bag type dust collector is internally provided with PTFE filter materials, the filter materials are high in temperature resistance (260 ℃), good in filtering effect (more than 99.5%), acid and alkali corrosion resistant and strong in hydrolysis resistant capability, meanwhile, in order to avoid flue gas condensation, the off-line air box pulse bag type dust collector is internally provided with an ash bucket electric tracing device, the outside of the off-line air box pulse bag type dust collector is also provided with a heat preservation skin for maintaining the temperature in the off-line air box pulse bag type dust collector between 120 ℃ and 150 ℃, compressed air passes through each pulse valve in an extremely short time sequence and is sprayed into the off-line air box pulse bag type dust collector through a nozzle on a blowing pipe, so that dust attached to the outer surface of the off-line air box pulse bag type dust collector is forced to fall into an ash bucket after being separated from a filter bag under the action of vibration and reverse airflow generated by expansion of the off-line air box pulse bag type dust collector, the resistance of the dust collector is reduced, the off-line air box pulse bag type dust collector service life is prolonged, and off-line ash cleaning is performed by adopting a separation chamber.
The off-line air box pulse bag type dust collector is connected with the wet method washing tower through a pipeline, the wet method washing tower is connected with the wet method electric dust collector, circulating alkali liquor is introduced into the wet method washing tower through an alkali liquor circulating pool, the wet method electric dust collector can form a strong electric field between a cathode line and an anode plate, so that air molecules are ionized, a large amount of electrons and positive and negative ions are instantaneously generated, the electrons and the ions do directional movement under the action of the electric field force, meanwhile, mist drops and dust particles in flue gas entering the electric field do directional movement under the action of the electric field force, the charged mist drops and dust particles arrive on the anode plate, the charged particles release electrons on the anode plate, the mist drops and the dust particles are accumulated, and the like, and when the mist drops and the dust particles on the anode plate accumulate to a certain amount, the mist drops and the dust particles are downwards flowed into the dust hopper under the action of gravity for further removing the mist drops and the dust particles in tail gas.
The wet electric dust remover is connected with the flue gas heater, because the exhaust tail gas after flue gas wet deacidification defogging is in a saturated state, condensed water vapor can form white smoke plume when the ambient temperature is lower, the smoke plume is a generation source of haze, the smoke plume generally only appears in winter in areas with higher ambient temperature, and the probability of appearance is larger in areas with lower ambient temperature, so that the flue gas heater is arranged to heat the flue gas to more than 130 ℃, the flue gas heater heats the tail gas through steam, the steam is generated by a waste heat boiler, and the flue gas heater discharges the heated tail gas to the atmosphere through a chimney by an induced draft fan.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. A waste incineration system comprises a compatibility system, an incineration system, a waste heat utilization system, an ignition and auxiliary combustion system, a tail gas treatment system and an air supply system, and is characterized in that,
The incineration system comprises a rotary kiln incinerator and a secondary combustion chamber, wherein a smoke outlet of the rotary kiln incinerator is connected with the secondary combustion chamber through a smoke pipeline, a water seal scraper slag scooper for scooping slag is further arranged at the bottom of the rotary kiln incinerator, a grid plate is arranged at the upper part of the water seal scraper slag scooper, and ignition and auxiliary combustion systems are arranged in the rotary kiln incinerator and the secondary combustion chamber;
the waste heat utilization system comprises a waste heat boiler and a semi-dry quenching absorption tower which are connected with each other, a smoke exhaust pipeline of the secondary combustion chamber is connected with the waste heat boiler, and flue gas after heat exchange with the waste heat boiler is introduced into the semi-dry quenching absorption tower through the pipeline;
The tail gas treatment system comprises a dry reactor, an ejector and an off-line gas box pulse bag type dust collector, wherein the dry reactor is connected with a flue gas outlet of a semi-dry quenching absorption tower, the ejector for ejecting powder activated carbon and slaked lime is arranged in the dry reactor, a gas outlet of the dry reactor is connected with the off-line gas box pulse bag type dust collector, and the dry reactor discharges tail gas into the atmosphere through a chimney;
The air supply system comprises a primary oxygen supplementing fan and a secondary oxygen supplementing fan which are respectively connected with the rotary kiln incinerator and the secondary combustion chamber through a supplementing pipeline;
The system comprises a solid waste matching mechanism, a waste liquid matching mechanism and a difficult-to-match substance treatment mechanism, wherein the solid waste matching mechanism comprises a plurality of storage tanks, a crane, a metering bin, a plate feeder and a feeding device, the storage tanks are used for storing solid waste, the solid waste is grabbed into a feed hopper of a rotary kiln incinerator by the crane, the feed hopper of the rotary kiln incinerator is connected with the metering bin through the plate feeder, the metering bin is used for metering the weight of the solid waste, the metering bin is provided with the feeding device for pushing the solid waste into the rotary kiln incinerator, and the feeding device is a hydraulic feeding push rod;
the waste liquid compatibility mechanism comprises a plurality of storage tanks for storing waste liquid, wherein the storage tanks are divided into a low-heat-value waste liquid storage tank, a high-heat-value waste liquid storage tank, a viscous waste liquid storage tank and a corrosive organic solvent conveying pipe according to the property of the waste liquid, the low-heat-value waste liquid storage tank is connected with a secondary combustion chamber through a pipeline, the high-heat-value waste liquid storage tank is connected with a rotary kiln incinerator and the secondary combustion chamber through a pipeline, pumps and metering devices are arranged on the pipelines, the viscous waste liquid storage tank is connected with the rotary kiln incinerator through a heating atomization device, the corrosive organic solvent conveying pipe is directly connected with the rotary kiln incinerator, and a diaphragm pump is arranged on the corrosive organic solvent conveying pipe;
the difficult-to-match material treatment mechanism comprises an emergency feeding hopper which is directly connected with the rotary kiln incinerator;
a non-catalytic reduction SNCR interface is also preset in the hearth of the waste heat boiler;
The chimney is also provided with a CEMS flue gas on-line monitoring system for detecting tail gas;
PTFE filter materials are arranged in the off-line air box pulse bag type dust collector, an ash bucket electric tracing device is also arranged in the off-line air box pulse bag type dust collector, and a heat preservation skin is also arranged outside the off-line air box pulse bag type dust collector and is used for maintaining the temperature in the off-line air box pulse bag type dust collector at 120-150 ℃, compressed air sequentially passes through pulse valves in extremely short time and is sprayed into the off-line air box pulse bag type dust collector through a nozzle on a blowing pipe, so that dust attached to the outer surface of the off-line air box pulse bag type dust collector is forced to fall into an ash bucket after being separated from a filter bag under the action of vibration and reverse airflow generated by expansion of the off-line air box pulse bag type dust collector;
The off-line air box pulse bag type dust collector is connected with the wet method washing tower through a pipeline, the wet method washing tower is connected with the wet method electric dust collector, circulating alkali liquor is introduced into the wet method washing tower through an alkali liquor circulating pool, the wet method electric dust collector is used for forming a strong electric field between a cathode line and an anode plate, so that air molecules are ionized, a large amount of electrons and positive and negative ions are instantaneously generated, the electrons and the ions do directional movement under the action of the electric field force, meanwhile, mist drops and dust particles in flue gas entering the electric field are enabled to do directional movement under the action of the electric field force, the charged mist drops and dust particles arrive at the anode plate, the charged particles release electrons on the anode plate, and then the mist drops and the dust particles are accumulated, and when the mist drops and the dust particles on the anode plate are accumulated to a certain amount, the mist drops and the dust particles in the tail gas are removed by gravity downward flow into the dust hopper;
the wet electric dust collector is connected with a flue gas heater, the flue gas heater heats tail gas through steam, the steam is generated by a waste heat boiler, and the flue gas heater discharges the heated tail gas to the atmosphere through a chimney by a draught fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710931971.1A CN109297023B (en) | 2017-10-09 | 2017-10-09 | Waste incineration system |
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| CN201710931971.1A CN109297023B (en) | 2017-10-09 | 2017-10-09 | Waste incineration system |
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| CN109297023A CN109297023A (en) | 2019-02-01 |
| CN109297023B true CN109297023B (en) | 2024-07-19 |
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| CN111121057B (en) * | 2019-12-31 | 2021-12-03 | 黄骅新智环保技术有限公司 | Incineration mode based on kiln head temperature of rotary kiln |
| CN111389166A (en) * | 2020-04-21 | 2020-07-10 | 南通九洲环保科技有限公司 | Hazardous waste incinerator tail gas purification process |
| CN112146106A (en) * | 2020-10-21 | 2020-12-29 | 湖南鑫恒环境科技有限公司 | Medical waste treatment and disposal system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103557526A (en) * | 2013-11-01 | 2014-02-05 | 上海灿州环境工程有限公司 | Complete equipment of hazardous waste and medical waste incinerator and incineration method of hazardous waste and medical waste |
| CN207486804U (en) * | 2017-10-09 | 2018-06-12 | 上海吉环科技有限公司 | A kind of castoff burning system |
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| CN2837692Y (en) * | 2005-11-17 | 2006-11-15 | 王永昌 | Domestic refuse incinerator |
| CN104874253B (en) * | 2015-05-29 | 2017-10-13 | 洪阳冶化工程科技有限公司 | A kind of calcium carbide furnace tail gas dry process dedusting-waste heat recovery-production synthesizes device of air |
| CN105219402A (en) * | 2015-10-19 | 2016-01-06 | 上海吉环科技有限公司 | A kind of full-automatic charring furnace for the treatment of ill domestic animal |
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| CN103557526A (en) * | 2013-11-01 | 2014-02-05 | 上海灿州环境工程有限公司 | Complete equipment of hazardous waste and medical waste incinerator and incineration method of hazardous waste and medical waste |
| CN207486804U (en) * | 2017-10-09 | 2018-06-12 | 上海吉环科技有限公司 | A kind of castoff burning system |
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