CN209309994U - The high-temperature plasma resource utilization system of waste containing chlorine - Google Patents
The high-temperature plasma resource utilization system of waste containing chlorine Download PDFInfo
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- CN209309994U CN209309994U CN201822213096.6U CN201822213096U CN209309994U CN 209309994 U CN209309994 U CN 209309994U CN 201822213096 U CN201822213096 U CN 201822213096U CN 209309994 U CN209309994 U CN 209309994U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model belongs to industrial waste processing technology field, and in particular to a kind of high-temperature plasma resource utilization system of waste containing chlorine.The recovery system includes the feed system being sequentially connected, plasma gasification furnace, level-one afterheat heat exchanger, sour absorption system, caustic wash tower, dual firing chamber, second level afterheat heat exchanger, quencher, bag filter, flue heater, SCR catalytic tower, heat exchanger, air-introduced machine and chimney.The utility model realizes recycling, innoxious, minimizing and the stabilized processing of the high waste containing chlorine；Operating cost is low, and market application prospect is wide.
Description
Technical field
The utility model belongs to industrial waste processing technology field, and in particular to a kind of high-temperature plasma of waste containing chlorine money
Source recovery system.
Background technique
The industrial trades such as existing chemical industry, medicine, pesticide generate a large amount of high wastes containing chlorine, and main organic principle is alkane containing chlorine
Hydrocarbon contains chloro-alkenes, containing Chlorobenzene etc., these debirs belong to hazardous waste, if not taking the direct heap buried for the treatment of measures
Or discharge, it will do great damage to atmosphere, soil and water resource, threaten bad border for the survival of mankind.Now substantially all
It is handled using solidification method, landfill method or incineration method.Main processing means have following several:
1, solidification method: stabilisation/curing technology, i.e., it is by inorganic solidifying hard material or chemical stabilization medicament that danger is useless
Object is fixed or is encapsulated in inert solid substrate, is transformed into the insoluble stable material of height, is reduced the toxicity and migration of waste
Property, meanwhile, improve the engineering properties of process object, is readily transported and disposes.Solidification method disposal technology comparative maturity, it is required
Material it is also less expensive and sufficient, large range of hazardous waste can be disposed, with burn and compost compared with, disposition
Cost is lower.Certainly, there is also some shortcomings, such as volume and weight of waste after disposing increased for the technology, contains
The waste of organic matter is more difficult in solidification, the equipment that masterful technique worker and valuableness are needed in disposal process, in disposition
Misoperation will lead to secondary pollution etc..
2, landfill method: landfill method is a kind of disposal by land method for disposing hazardous waste, pre-processes facility, waste by waste
Facility and leachate collection treatment facility composition are filled, hazardous waste and percolate can be environmentally isolated with, waste pacified by it
All risk insurance deposits the quite a while (tens of or even upper a century).But there is also some drawbacks for landfill method: landfill yard must be far from residence
People area；Landfill site seepage prevention processing requirement is high, disposes the bad pollution for be easy to causeing underground water；The hazardous waste in underground is filled,
Inflammable, explosive or poisonous gas may be generated by decomposing, need to be controlled and handle.In addition landfill is also not finally
Disposition means, need to occupy a large amount of soil, and later maintenance cost and risk are higher.
3, incineration method: referring to the process of that burning is incinerated keeps waste innoxious.It burns now and mainly uses rotary kiln, grate furnace
And the techniques such as recirculating fluidized bed, for incineration temperature between 850-950 DEG C, treatment temperature is low, be easy to produce highly toxic dioxin,
The substances such as furans；It is oxygen-excess combustion, generates a large amount of NOx, later period flue gas denitrification system load is big；Incineration of waste is not thorough, raw
At a large amount of clinkers；When handling solid slag, exhaust contains a large amount of fine dusts；It is provided according in hazardous waste catalogue, danger is useless
The clinker and flying dust or hazardous waste that the disposal process such as object burning, pyrolysis generate, so burning process is minimizing processing,
Innoxious, disposal of resources is not accomplished.
In conclusion waste containing chlorine directly fills or solidifies, it can not accomplish minimizing, recycling, and misoperation is equal
It pollutes the environment；Compared to landfill method and solidification method, incineration method processing cost is higher, and the clinker and flying dust of generation are dangerous wastes,
It can not recycle；And a large amount of sour gas HCl can be generated after incineration of waste containing chlorine, increase later period deacidifying flue gas cost,
Such as deal with the corrosion that will cause equipment improperly.
Current depickling mode mainly has following three kinds: dry-process deacidification, semidry method depickling and wet process depickling.
1) dry-process deacidification is by white lime by nozzle specially used penetrating reactor, allowing white lime microparticle surfaces directly and cigarette
Sour gas contact in gas, generates chemical neutralization reaction, generates harmless neutral salt particle, the shot-like particle for entering back into downstream is gone
Except equipment.Dry purification process process is simple, easy to operate, does not generate waste liquid, but reagent consumption amount is big, HC1 removal efficiency is low.
2) wet cleaning technique generally uses sodium hydroxide solution wet scrubber tower depickling.Wet cleaning technique HC1 removal
High-efficient, generally 95% or so, but investment is big, power consumption is big, takes up a large area, the device is complicated, and it is inorganic to generate high concentration
Villaumite increases waste water treatment system load.
3) purification of flue gases by semidry process system is generally using calcium oxide (CaO) or calcium hydroxide (Ca (OH)2) it is raw material, system
For at Ca (OH)2Solution, by nozzle or rotary sprayer by Ca (OH)2Solution spray into reactor in, in HCl and generate neutrality
Salt particle.Semidry method wet cleaning technique deacidification efficiency is higher, and HC1 removal rate is generally 90% or so, but prepared by lime white
System complex, pipeline and nozzle easily block.
Above-mentioned three kinds of deacidifying flue gas technique is to utilize in deacidification agent with HCl gas, reaches deacidification purpose, but run
In can consume a large amount of deacidification agents, and with the generation of solid waste, waste liquid, will increase the processing cost of solid waste and waste liquid.
In conclusion the conventional incineration technique of the waste containing chlorine has the following deficiencies: at present
1) high solid waste containing chlorine can not be handled simultaneously, liquid gives up, gas is useless.
2) it can not thoroughly destroy high chlorine-containing organic waste by fire, the hazardous wastes such as clinker and flying dust can be generated, it is also necessary to secondary place
Reason；And incineration temperature is low, can generate the high toxic materials such as dioxin, furans.
3) convention acidic gas HCl removing process, deacidification agent consumption is big, and reagent cost is high, and with the production of solid waste, waste liquid
It is raw, increase waste processing cost.
4) conventional incineration technique, exhaust gas volumn is big, and HCl content is low in flue gas, flying dust amount is big, causes HCl assimilation effect poor, obtains
The concentration of hydrochloric acid arrived is low (10% or so), and impurity content is high, directly can not utilize or sell.
Utility model content
In view of the deficiencies of the prior art, the purpose of the utility model is to provide a kind of high-temperature plasma resources of waste containing chlorine
Change recovery system, realizes recycling, innoxious, minimizing and the stabilized processing of the high waste containing chlorine；Operating cost is low, city
Field has a extensive future.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
The high-temperature plasma of waste containing chlorine resource utilization system described in the utility model, including the charging being sequentially connected
System, plasma gasification furnace, level-one afterheat heat exchanger, sour absorption system, caustic wash tower, dual firing chamber, second level afterheat heat exchanger, chilling
Device, bag filter, flue heater, SCR catalytic tower, heat exchanger, air-introduced machine and chimney.
The slag notch of the plasma gasification furnace is also connected with cooling device.
The sour absorption system is recirculated water absorption system, and sour absorption system is also connected with sour filter device.
SNCR denitration device is arranged in dual firing chamber's rear pass.
Active carbon and sodium bicarbonate jetting device are set on the pipeline between quencher and bag filter.
Smoke on-line monitoring system is set on the chimney.
The technique of the use high-temperature plasma of waste containing the chlorine resource utilization system, comprising the following steps:
1) chlorine waste will be contained to be delivered in plasma gasification furnace by feed system；
2) synthesis gas that cracking generates is cooled down by level-one afterheat heat exchanger；
3) after the synthesis gas after cooling down enters sour absorption system absorption acid, the further depickling of caustic wash tower is entered back into；
4) synthesis gas after depickling enters dual firing chamber's burning, and the high-temperature flue gas of generation is cooled down by second level afterheat heat exchanger；
5) after the flue gas after cooling down enters quencher chilling, into bag filter dedusting；
6) flue gas after dedusting enters the heating of flue heater；
7) flue gas enters SCR catalytic tower removing nitrogen oxides in effluent；
8) treated that flue gas enters after heat exchanger exchanged heat by SCR, extracts out by air-introduced machine, is discharged into greatly by chimney
Gas.
Wherein:
In step 1), chlorine waste, coke and fluxing agent lime stone will be contained by feed system and be delivered to plasma gasification furnace
It is interior.
Plasma gasification furnace bottom melting zone temperature described in step 1) reaches 1450-1600 DEG C, top gasification zone
Temperature reaches 1200 DEG C or more.
In step 5), the quencher is cooling using water or air, and flue-gas temperature is chilled in 1s by 500 DEG C
200℃。
Preferably, the technique of the described use high-temperature plasma of waste containing the chlorine resource utilization system, specifically include as
Lower step:
1) chlorine waste will be contained to be delivered in plasma gasification furnace by feed system；
2) hydroxyl radical free radical that plasma gasification furnace is generated using plasmatorch is by organic matter Pintsch process at CO, CO2、H2、
H2O, the synthesis gas such as HCl；
3) high-temperature synthesis gas recycles heat in synthesis gas by level-one afterheat heat exchanger and generates steam product；
4) synthesis gas enters sour absorption system after cooling down, and HCl gas in synthesis gas is fully absorbed hydrochloric acid product, and lead to
Peracid filter device obtains high purity salt acid product, does not absorb HCl in synthesis gas and enters back into caustic wash tower and further neutralizes removing；
5) removing HCl sour gas synthesis gas enters dual firing chamber's full combustion completely, and high-temperature flue gas enters second level waste heat and returns
Receipts system, obtains steam product；
6) last flue gas passes through smoke processing system qualified discharge.
It will can adequately contain chlorine waste harmless treatment using system provided by the utility model, and can effectively recycle
Hydrochloric acid product realizes that resource utilization utilizes.It is high that the utility model can be used to the industrial trades such as processing petroleum, chemical industry, medicine
The harmless treatment of waste containing chlorine.
The utility model compared with prior art, has the following beneficial effects:
1) hydroxyl radical free radical generated in plasma gasification furnace by plasma can will be organic in high waste containing chlorine
Ingredient sufficiently cracks, and dioxin kill probability reaches 99.9999% or more, and the small molecules synthesis gas such as form HCl, CO.
2) this system is absorbed using first gasification cracking+acid, and then the technique of second-time burning, the setting of absorption by Hydrochloric Acid system exist again
Before dual firing chamber, HCl concentration is higher in flue gas at this time, and sour absorption efficiency is higher, and it is higher to obtain hydrochloric acid purity, can reach 20% with
Upper concentration.By the combination of high-temperature plasma gasified melting system and sour absorption system, the resource of the high waste containing chlorine is realized
Change, innoxious, minimizing and stabilized processing.
3) whole system setting two-stage waste-heat recovery device (i.e. two-stage afterheat heat exchanger), heat recovery efficiency is higher.
4) flue gas enters back into dual firing chamber after acid absorbs, and burns more abundant, operating cost is lower.
5) dual firing chamber handles synthesis gas substantially without chlorine-bearing compound, and flow rate is higher, can guarantee ignition temperature >
1100 DEG C, the residence time > 2s thoroughly eliminates the condition that dioxin generates.
6) smoke processing system can require the measures such as design chilling, dedusting, denitration according to flue gas emission, guarantee flue gas emission
Reach relevant specification of country requirement.
7) waste containing chlorine is continuous feed, and can handle the wastes containing chlorine such as solid, liquids and gases simultaneously, passes through difference
Throat-fed, it is non-interference, handle simultaneously.
8) sour absorption system designs sour filter device, and it is miscellaneous that the hydrochloric acid absorbed is further filtered flying dust therein etc.
Matter guarantees hydrochloric acid product quality.
9) total system tiny structure, using rear end air-introduced machine air output control.
10) technological adaptability is strong, can both solve the handling problems of the high waste containing chlorine, avoid the problem of waste reclamation containing chlorine and burn
Secondary pollution problem is burnt, landfill yard is saved；The hydrochloric acid of high-purity, high concentration can be recycled again, guarantee directly to produce reuse；
It effectively reduces the operating load of rear end smoke processing system again simultaneously, greatly reduces the consumption of deacidification agent and solid waste, useless
The generation of liquid, reduces processing cost, and market application prospect is wide.
11) dual firing chamber is arranged after sour absorption system, and flue gas is free of corrosive gas after dual firing chamber, can comprehensively utilize；Two
Room setting is fired after acid absorbs, and exhaust gas volumn is small, and sour absorption equipment investment operating cost is low, and sour absorption efficiency is higher, and it is dense to obtain acid
Du Genggao.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model high-temperature plasma resource utilization system of waste containing chlorine；
In figure: 1, feed system；2, plasma gasification furnace；3, level-one afterheat heat exchanger；4, sour absorption system；5, alkali cleaning
Tower；6, dual firing chamber；7, second level afterheat heat exchanger；8, quencher；9, bag filter；10, flue heater；11, SCR is catalyzed
Tower；12, heat exchanger；13, air-introduced machine；14, chimney；15, cooling device；16, sour filter device；17, SNCR denitration device；18,
Active carbon and sodium bicarbonate jetting device；19, smoke on-line monitoring system.
Specific embodiment
The utility model is described further below with reference to embodiment.
Embodiment
As shown in Figure 1, the high-temperature plasma resource utilization system of waste containing chlorine, including the charging being sequentially connected
System 1, plasma gasification furnace 2, level-one afterheat heat exchanger 3, sour absorption system 4, caustic wash tower 5, dual firing chamber 6, the heat exchange of second level waste heat
Device 7, quencher 8, bag filter 9, flue heater 10, SCR catalytic tower 11, heat exchanger 12, air-introduced machine 13 and chimney 14.
The slag notch of the plasma gasification furnace 2 is also connected with cooling device 15.
The sour absorption system 4 is recirculated water absorption system, and sour absorption system 4 is also connected with sour filter device 16.
SNCR denitration device 17 is arranged in 6 rear pass of dual firing chamber.
Active carbon and sodium bicarbonate jetting device 18 are set on the pipeline between quencher 8 and bag filter 9.
Smoke on-line monitoring system 19 is set on the chimney 14.
The heat exchanger 12 is connected with level-one afterheat heat exchanger 3, second level afterheat heat exchanger 7 respectively.
The technique of the use high-temperature plasma of waste containing the chlorine resource utilization system, specifically includes the following steps:
Waste liquid containing chlorine, solid waste containing chlorine, chlorine contained exhaust gas enter plasma gasification furnace by different feed systems 1.According to meter
It calculates to increase and can reach the condition for stablizing gasification inside coke guarantee plasma gasification furnace 2.Plasma gasification process belongs to anoxic gas
Change and it is non-burning, 2 bottom melting zone temperature of plasma gasification furnace reaches 1450-1600 DEG C, and top gasification zone temperature reaches
1200 DEG C or more.Need to add coke in gasification furnace as bed.In 1450-1600 DEG C of plasma gasification furnace of reaction temperature
Under, inorganic matter is melted into liquid, while adding fluxing agent lime stone into furnace by feed system 1 and adjusting the form slagged tap,
2 bottom molten slurry of plasma gasification furnace enters cooling device 15 (water cooling plant can also be used air-cooled) after being discharged by dreg removing system,
Glass slugging totally nontoxic after water cooling is harmless, can be used as sandstone aggregate and builds the road use.
Plasma gasification reaction generates CO, CO2、H2、CH4, the synthesis gas such as HCl.The synthesis come out from plasma gasification furnace 2
Most of heat recovery in synthesis gas is subsequently entered acid by level-one afterheat heat exchanger 3 first containing a large amount of thermal energy by gas
Absorption system 4 absorbs HCl, and the hydrochloric acid of output > 20% is refined through peracid filter device 16, to produce qualified clean hydrochloric acid
Product.By caustic wash tower 5 after acid absorption, HCl gas in flue gas is further removed using lye, it is ensured that containing in flue gas containing HCl
Amount meets emission request.
The synthesis gas temperature come out from plasma gasification furnace 2 is 1000 DEG C or so, after level-one afterheat heat exchanger 3, temperature
Degree drops to 250 DEG C or so.After sour absorption system 4, temperature drops to 45 DEG C or so, after caustic wash tower 5, drops to 40 DEG C of left sides
It is right.
The Clean synthesis gas absorbed through peracid obtains a large amount of thermal energy by the burning of dual firing chamber 6.Dual firing chamber's temperature is reachable
1100 DEG C or more, gas residence time is greater than 2s.
The high-temperature flue gas come out from dual firing chamber 6 sets SNCR denitration device in 6 rear pass of dual firing chamber containing a large amount of thermal energy
17, ammonium hydroxide or urea are sprayed, removes nitrogen oxides in effluent at 800-1000 DEG C in second level afterheat heat exchanger 7.Flue gas passes through two
Grade afterheat heat exchanger 7 most of heat recovery in flue gas, be also down to 550 DEG C or so by 1100 DEG C, satisfied by flue-gas temperature
And steam, subsequently into quencher 8, quencher 8 is cooling using water or air, and flue-gas temperature is anxious by 500 DEG C or so in 1s
It is cooled to 200 DEG C, prevents the anti-generation of dioxin.
Enter bag filter 9 by the flue gas after chilling, active carbon and small is set on entering 9 pipeline of bag filter
Soda jetting device 18 can effectively be contacted into bag filter 9 with flue gas, adsorb dioxin and furans in flue gas,
The sour gas such as part sulfur dioxide can be removed, flying dust is periodically into the processing of plasma gasification furnace 2 after cloth bag collecting.
Flue gas after dedusting enters flue heater 10, is risen to flue-gas temperature by 170 DEG C by natural gas or steam
230 DEG C or so, reach the temperature requirement of SCR denitration, then flue gas enters SCR catalytic tower 11, removes nitrogen oxidation in flue gas again
Object guarantees the emission request of nitrogen oxides.
Flue gas is handled since temperature is higher from SCR, heat exchanger 12 is entered back into and exchanges heat, and heating enters level-one waste heat and exchanges heat
The soft water (inflow temperature is 25 DEG C of room temperature) of device 3 and second level afterheat heat exchanger 7, is down to 130 DEG C or less for flue-gas temperature.Keep temperature
For degree more than flue gas dew point temperature, i.e. flue-gas temperature prevents dewing corrosion and white cigarette from generating at 110 DEG C or more.
Preferably, it is set on the pipeline between the heat exchanger 12 and level-one afterheat heat exchanger 3, second level afterheat heat exchanger 7
Set oxygen-eliminating device.
Then pass through air-introduced machine 13, air-introduced machine 13 guarantees that whole system is negative pressure system, guarantees that flue gas will not pass through flue
It is discharged outward with equipment, flue gas all can be discharged into atmosphere by chimney 14.To monitor flue gas emission data, flue gas is set on chimney
On-line monitoring system 19, real-time monitoring flue gas emission data, and data can be directly transferred to Environmental Protection Agency.Cigarette after treatment
Gas is by being discharged into atmosphere, wherein having the concentration of emission of polluted gas and rate to be lower than discharge as defined in relevant national standard environment
Standard.
Present case rear end smoke processing system can be adjusted according to the modification of relevant national standard specification, to meet country
The emission request of Specification.The high organic principle of waste containing chlorine is decomposed into CO, CO by leading portion high-temperature plasma gasification furnace 22、
H2、H2O, the synthesis gas such as HCl recycle HCl by sour absorption system 4, concentrated hydrochloric acid are made；The high inorganic constituents of waste containing chlorine
It is melted under high temperature, obtains nontoxic glass slugging, can be used as sandstone aggregate to utilize, to realize the money of the high waste containing chlorine
Project operation cost is effectively reduced in source and innoxious use.
Claims (6)
1. a kind of high-temperature plasma resource utilization system of waste containing chlorine, it is characterised in that: including the charging system being sequentially connected
It unites (1), plasma gasification furnace (2), level-one afterheat heat exchanger (3), sour absorption system (4), caustic wash tower (5), dual firing chamber (6), two
Grade afterheat heat exchanger (7), quencher (8), bag filter (9), flue heater (10), SCR catalytic tower (11), heat exchanger
(12), air-introduced machine (13) and chimney (14).
2. the high-temperature plasma of waste containing chlorine resource utilization system according to claim 1, it is characterised in that: described
The slag notch of plasma gasification furnace (2) is also connected with cooling device (15).
3. the high-temperature plasma of waste containing chlorine resource utilization system according to claim 1, it is characterised in that: described
Sour absorption system (4) is recirculated water absorption system, and sour absorption system (4) is also connected with sour filter device (16).
4. the high-temperature plasma of waste containing chlorine resource utilization system according to claim 1, it is characterised in that: described
SNCR denitration device (17) are arranged in dual firing chamber's (6) rear pass.
5. the high-temperature plasma of waste containing chlorine resource utilization system according to claim 1, it is characterised in that: quencher
(8) active carbon and sodium bicarbonate jetting device (18) are set on the pipeline between bag filter (9).
6. the high-temperature plasma of waste containing chlorine resource utilization system according to claim 1, it is characterised in that: described
Smoke on-line monitoring system (19) are set on chimney (14).
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| CN201822213096.6U CN209309994U (en) | 2018-12-26 | 2018-12-26 | The high-temperature plasma resource utilization system of waste containing chlorine |
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| CN201822213096.6U CN209309994U (en) | 2018-12-26 | 2018-12-26 | The high-temperature plasma resource utilization system of waste containing chlorine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477043A (en) * | 2021-06-30 | 2021-10-08 | 北京京仪自动化装备技术股份有限公司 | Exhaust gas treatment system |
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2018
- 2018-12-26 CN CN201822213096.6U patent/CN209309994U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477043A (en) * | 2021-06-30 | 2021-10-08 | 北京京仪自动化装备技术股份有限公司 | Exhaust gas treatment system |
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Effective date of registration: 20191216 Address after: No. 369, Yumin Road, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong Borun Environmental Protection Technology Co., Ltd Address before: 255086 Shandong province Zibo City Yumin Road hi tech Development Zone No. 169 Patentee before: Shandong Borun Process Industrial Technology Corp., Ltd. |