CN107497267A - A kind of rubbish cracking incineration tail gas processing method - Google Patents

A kind of rubbish cracking incineration tail gas processing method Download PDF

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Publication number
CN107497267A
CN107497267A CN201710926918.2A CN201710926918A CN107497267A CN 107497267 A CN107497267 A CN 107497267A CN 201710926918 A CN201710926918 A CN 201710926918A CN 107497267 A CN107497267 A CN 107497267A
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tail gas
tower
layer
pipeline
sack cleaner
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CN107497267B (en
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项敬来
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Suzhou Jingtian Airen Environmental Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • 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
    • 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
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/602—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/606—Carbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B01D2258/0291—Flue gases from waste incineration plants
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a kind of industrial refuse cracking incineration tail gas processing method, successively after cooling treating column, multiple filtration tower, multilayer sack cleaner, wet scrubber tower, tail gas recirculation system, dust present in tail gas, heavy metal steam, organic matter, nitrogen oxides, nitric oxide and penetrating odor are efficiently removed tail gas.Treatment method taste removal purification efficiency is high, and multiple filtration tower absorption resistance coefficient is smaller, energy consumption is low, be not easy obstruction, later stage replacement operation is easy to maintenance, operation cost is low.By the tail gas clean-up efficiency high that the system is handled up to more than 99%, pollutant concentration is less than national discharge standard.

Description

A kind of rubbish cracking incineration tail gas processing method
Technical field
The present invention relates to a kind of industrial refuse cracking incineration tail gas processing method, the exhaust-gas treatment neck belonged in field of Environment Protection Domain.
Background technology
Consideration of MSW Incineration Technology is with that can carry out minimizing, recycling and harmless treatment to rubbish, can largely to subtract Attracted attention less the features such as garbage loading embeading floor space.The whole nation at present（In addition to Hong Kong, Macao, Taiwan）It is completed garbage burning factory 68 Seat, disposal ability reach 33000 ton per days, and burning disposal rate rises to current 12.9% by 2.9% in 2013.Due to life The particularity of rubbish living, inevitably results from substantial amounts of gaseous contaminant, if without effectively controlling in burning process Reason, will cause seriously to pollute to environment, be detrimental to health.
Dry purification process is in recent years in the incineration plant of Japan is built using more, and its technics comparing is simple, and investment is low, Operation maintenance is convenient, is preferably to select under conditions of emission request is not high.But dry process purification efficiency is relatively low.
Semidry method purification technique can reach higher purification efficiency, and investment is low with operating cost, and flow is simple, does not produce useless Water, European incineration plant is more using semidry method, Denmark, France, Germany respectively may be about 20% using the ratio of semidry method, 40% and 30%.Semidry process also has the example of more successful application at home, have accumulated certain operating experience, is applied to Discharge standard requires higher incineration plant.
The content of the invention
The problem of existing for prior art, the present invention provide a kind of industrial refuse cracking incineration tail gas processing method, split Change the air intake that caused tail gas in waste incinerator connects cooling treating column by pipeline, the tail gas from incinerator enters first Enter the treating column that cools, exhaust temperature is down to 180 DEG C -150 DEG C, to meet the requirement of follow-up bag-type dusting, in the treating column that cools Cooling water be atomized by compressed air after spray into cooling treating column and directly contacted with tail gas, part in tail gas while cooling Dust is fallen into the hopper of cooling treating column bottom of towe, is then delivered to through conveyer in collection chimney, and cooling processing tower bottom goes out dirt Mouth connects the left side dust inlet of collection chimney by pipeline, and the gas outlet for the treating column that cools passes through pipeline and connects multiple filtration tower bottom Air inlet, reactive moieties are averagely divided into 4 layers from bottom to top in multiple filtration tower, are active carbon layer, roseleaf layer, shaddock Cortex and quick lime layer, every layer of centre are separated by fine metal mesh, and tower bottom region is that tail gas enters buffering area, and top of tower region is Tail gas discharges buffering area, has identical design, including three groups of parallel necks in each layer of reactive moieties, is put on every group of neck Bamboo box is put, is filled out respectively in bamboo box and puts activated carbon corresponding to every layer, roseleaf, pomelo peel, quick lime filler, tail gas is from multilayer mistake Filter tower bottom enters buffering area, passes through each layer of reacting part successively by buffering area, be placed in bamboo box activated carbon, rose Valve, pomelo peel, quick lime reaction, remove tail gas present in heavy metal steam, organic matter, nitrogen oxides, nitric oxide and Penetrating odor, the gas outlet of multiple filtration top of tower side connect multilayer sack cleaner left side first by pipeline and enter gas Mouthful, the gas outlet of air compressor machine connects the air intake on multilayer sack cleaner top by pipeline, the tail gas come from multiple filtration tower Multilayer sack cleaner is entered back into, flue dust, quick lime reactant and product caused by burning, the heavy metal condensed, is sprayed into Activated carbon granule is each attached to filter bag surface, forms one layer of filter cake, and activated carbon also further serves as suction-operated on filter bag surface, when After tail gas is by multilayer sack cleaner, the flying dust for being attached to filter bag outer surface enters to be discharged into dust through the blowback of air compressor machine compressed air In tower.The dust mouth of multilayer sack cleaner connects the dust inlet of collection chimney by pipeline, goes out on the right side of multilayer sack cleaner Gas port connects the bottom air intake of wet scrubber tower by pipeline, and the tail gas come out from multilayer sack cleaner is from wet scrubber tower Bottom, which enters, to be run up, and is fully contacted with the sodium hydroxide and carbonic acid soda lye sprayed downwards, exhaust temperature is gradually reduced, Sour gas HCl, HF, SO in the bead surface and tail gas of antiacid alkali built in wet scrubber tower2Carried out Deng more fully anti- Should, salt, alkali lye regular replenishment are generated, the saline solns of generation are discharged in time, and the top gas outlet of wet scrubber tower passes through pipe Road connects the air intake of tail gas recirculation system, and when tail gas enters in tail gas recirculation system, on-line monitoring system is started working, According to the result of display, tail gas up to standard is discharged after flowing through air-introduced machine from line pipeline, and the result of display is not up to standard, then is closed straight Discharge pipe, recirculation conduit is opened, now air blower starts to blow toward in system, and tail gas is along recirculation conduit and fresh air Mixing is fed again into cooling treating column, and the air intake vent of tail gas recirculation system connects air blower by pipeline.
Further, 5 layers of grid are set in wet scrubber tower, the substantial amounts of acid and alkali-resistance plastic beads of people is put above every layer of grid, A diameter of 5cm.
Further, collect and electrostatic equipment is set in chimney, the voltage of electrostatic equipment is 220v；It is provided with tail gas recirculation system Tail gas automatic on-line monitoring instrument.
Further, three layers of cloth bag of arranged in series in multilayer sack cleaner.
The advantage of the invention is that：
（1）Technique taste removal purification efficiency is high, and multiple filtration tower absorption resistance coefficient is smaller, energy consumption is low, is not easy obstruction, later stage more It is low to change convenient operating maintenance, operation cost.
（2）By the tail gas clean-up efficiency high that the system is handled up to more than 99%, pollutant concentration is less than national discharge mark It is accurate.
（3）Present treatment system is using processing material energy-conserving and environment-protective, and nontoxic, the discarded object of collection can be accomplished to unify back Receipts processing.
（4）Multiple filtration Deethanizer design structure is novel, simple to operate, and it is convenient and swift to change material.
Brief description of the drawings
Fig. 1 is industrial refuse cracking incineration tail gas processing method schematic diagram.
1- coolings treating column, 2- multiple filtrations tower, 3- multilayers sack cleaner, 4- wet scrubbers, 5- exhaust gas recirculations System, 6- air-introduced machines, 7- air compressor machines, 8- collection chimney, 9- air blowers.
Fig. 2 is multiple filtration tower schematic diagram.
21- tail gas enter buffering area, 22- active carbon layers, 23- roseleafs layer, 24- shaddocks cortex, 25- quick limes layer, 26- tail gas discharge buffering area, 27- wire nettings, 28- necks, 29- bamboo boxes.
Embodiment
Industrial refuse cracking incineration tail gas processing system as shown in Figure 1, the system include cooling treating column 1, multilayer mistake Filter tower 2, multilayer sack cleaner 3, wet scrubber tower 4, tail gas recirculation system 5, air-introduced machine 6, air compressor machine 7, collection chimney 8, drum Blower fan 9.Caused tail gas connects the air intake of cooling treating column 1 by pipeline in cracking waste incinerator, from incinerator Tail gas initially enters cooling treating column 1, exhaust temperature is down into 180 DEG C -150 DEG C, to meet the requirement of follow-up bag-type dusting.Drop Spray into after cooling water is atomized by compressed air in warm treating column 1 in cooling treating column 1 and directly contacted with tail gas, cool treating column Highly set it is sufficiently high with ensure spray into atomized water can be with evaporating completely.The dust of part falls into drop in tail gas while cooling In the hopper of warm treating column bottom of towe, then delivered to through conveyer in collection chimney 8.The dust mouth of cooling treating column 1 bottom passes through pipe The left side dust inlet of road connection collection chimney 8, the gas outlet for the treating column 1 that cools connect entering for the bottom of multiple filtration tower 2 by pipeline Gas port, tail gas enter buffering area from the bottom of multiple filtration tower 2, by buffering area by the bamboo box 29 being placed on neck 28, activity The filtering of charcoal, the filtering of roseleaf, the filtering of pomelo peel, the reaction of quick lime, remove tail gas present in heavy metal steam, Most of organic matter, nitrogen oxides, nitric oxide and some penetrating odors.The gas outlet of the top-side of multiple filtration tower 2 First air intake of the left side of multilayer sack cleaner 3 is connected by pipeline, the right side gas outlet of multilayer sack cleaner 3 passes through pipeline The bottom air intake of wet scrubber tower 4 is connected, is entered for 4 from the tail gas that multilayer sack cleaner 3 comes out from wet scrubbing bottom of towe Run up, fully contacted with the sodium hydroxide and carbonic acid soda lye sprayed downwards, exhaust temperature is gradually reduced, built-in anti- Sour gas HCl, HF, SO of part in the bead surface and tail gas of soda acid2Deng more fully being reacted, salt is generated.Alkali Liquid regular replenishment, the saline solns of generation are discharged in time.The top gas outlet of wet scrubber tower 4 connects tail gas by pipeline and followed again The air intake of loop system 5, when tail gas enters in tail gas recirculation system 5, on-line monitoring system is started working, according to the knot of display Fruit, tail gas up to standard open in line pipeline, and tail gas has in line pipeline to be discharged after flowing through air-introduced machine 6, and the result of display has abnormal number Value, then in line pipeline is closed, open recirculation conduit, now air blower starts to blow toward in system, and tail gas is along recirculation pipe Road mixes with fresh air to be fed again into cooling treating column 1.The gas outlet of tail gas recirculation system 5 connects air inducing by pipeline Machine 6, the air quantity of air-introduced machine 6 drive the accelerated motion of pipeline inner exhaust gas.The air outlet connection exhaust emission pipeline of air-introduced machine 6, it is empty The gas outlet of press 7 connects the air intake on the top of multilayer sack cleaner 3 by pipeline, from the tail gas of multiple filtration tower 2, warp After quick lime, pomelo peel, roseleaf and activated carbon are deacidified and adsorbed, multilayer sack cleaner 3 is entered back into, burns and produces Flue dust, quick lime reactant and product, the heavy metal, the various particulate matters such as activated carbon that spray into that condense be each attached to filter bag Surface, form one layer of filter cake；Reactant of the sour gas herein with excess in tail gas further serves as reaction, makes sour gas Removal efficiency further improves；Activated carbon also further serves as suction-operated on filter bag surface.When tail gas passes through multilayer bag-type dust After device 3, the flying dust for being attached to filter bag outer surface enters to be discharged into collection chimney 8 through the compressed air blowback of air compressor machine 7.Multilayer bag-type dust The dust mouth of device 3 connects the dust inlet of collection chimney 8 by pipeline, and the air intake vent of tail gas recirculation system 5 is connected by pipeline to be roused Blower fan 9.Wherein, cool the interior installation cooling device for the treatment of column 1 and flying dust discharger, and design temperature is 180 DEG C -150 DEG C；Multilayer Filtration tank 2 includes tail gas and enters buffering area 21, active carbon layer 22, roseleaf layer 23, shaddock cortex 24, quick lime layer 25, tail Gas discharges buffering area 26, wire netting 27, neck 28, bamboo box 29, and reactive moieties are averagely divided into from bottom to top in multiple filtration tower 2 4 layers, be active carbon layer 22, roseleaf layer 23, shaddock cortex 24 and quick lime layer 25, every layer of centre is by thin per floor height 40cm Wire netting separates 27, and tower bottom region is that tail gas enters buffering area 21, and top of tower region is that tail gas discharges buffering area 26, is being reacted The each layer in part has identical design, including three groups of parallel necks 28,28 long 5cm of neck, 28 vertical separations of neck 10cm, bamboo box 29 is placed on every group of neck, 29 high 8cm of bamboo box, is made up of bamboo cane, is filled out respectively in bamboo box 29 and put every layer of correspondence Filler, activated carbon, roseleaf, pomelo peel, quick lime；Three ply board shape bandlet built in multilayer sack cleaner 3, three layers of cloth bag Series arrangement；5 layers of grid are set in the cigarette of wet scrubber tower 4, put the substantial amounts of acid and alkali-resistance plastic beads of people above every layer of grid, directly Footpath is 5cm, and water drenching mouth under being sprayed in multilayer is set with stainless steel tube in tower, and leacheate is configured to sodium hydroxide+sodium carbonate, two Person's ratio is 2:1；Every gas outlet pipeline all installs Valve controlling in tail gas recirculation system 5.Shaddock is selected in multiple filtration tower 2 Sub- leatner seal is square block filler, and the packing volume in each bamboo box 29 is respectively 8cm from bottom to up3、3.375cm3、 1cm3.Collect and electrostatic equipment is set in chimney 8, the voltage of electrostatic equipment is 220v；Tail gas is provided with tail gas recirculation system 5 certainly Dynamic on-line computing model.
After processing method processing, pollutants removal rate reaches more than 99%.

Claims (2)

1. a kind of rubbish cracking incineration tail gas processing method, it is characterised in that caused tail gas passes through in rubbish cracking incinerator Pipeline enters cooling treating column, and the cooling water in the treating column that cools is sprayed into after being atomized by compressed air in cooling treating column and tail gas Directly contact, exhaust temperature is down to 150 DEG C, part dust while cooling in tail gas falls into the material of cooling treating column bottom of towe In bucket, collection chimney is sent into the dust mouth that tower bottom is then handled through cooling, and the gas outlet for the treating column that cools is more by pipeline connection The air inlet of layer filtering tower bottom, the interior middle part of multiple filtration tower are reactive moieties, and tower bottom region is that tail gas enters buffering area, tower Top area is that tail gas discharges buffering area, and 4 layers are averagely divided into from bottom to top in reactive moieties, is active carbon layer, roseleaf Layer, shaddock cortex and quick lime layer, every layer of centre are separated by fine metal mesh, and every layer includes four groups of parallel necks, every group of neck It is upper to place bamboo box, filled out respectively in bamboo box and put activated carbon corresponding to every layer, roseleaf, pomelo peel, quick lime filler, tail gas is certainly more Layer filtering tower bottom enters buffering area, passes through each layer of reactive moieties successively by buffering area, with activated carbon, the rose being placed in bamboo box Rare petal, pomelo peel, quick lime reaction, remove heavy metal steam, organic matter, nitrogen oxides, nitric oxide present in tail gas And penetrating odor, the gas outlet of multiple filtration top of tower side connect multilayer sack cleaner left side first by pipeline and entered Gas port, the gas outlet of air compressor machine connect the air intake on multilayer sack cleaner top by pipeline, the tail come from multiple filtration tower Gas enters back into multilayer sack cleaner, flue dust, quick lime reactant and product in tail gas, the heavy metal that condenses, sprays into Activated carbon granule is each attached to filter bag surface, forms one layer of filter cake, and activated carbon also further serves as suction-operated on filter bag surface, when After tail gas is by multilayer sack cleaner, the flying dust for being attached to filter bag outer surface enters to be discharged into dust through the blowback of air compressor machine compressed air In tower, the dust mouth of multilayer sack cleaner connects the dust inlet of collection chimney by pipeline, goes out on the right side of multilayer sack cleaner Gas port connects the bottom air intake of wet scrubber tower by pipeline, and the tail gas come out from multilayer sack cleaner is from wet scrubber tower Bottom, which enters, to be run up, and is fully contacted with the sodium hydroxide and carbonic acid soda lye sprayed downwards, exhaust temperature is gradually reduced, HCl, HF, SO in the bead surface and tail gas of antiacid alkali built in wet scrubber tower2More fully reacted, generate salt Class, alkali lye regular replenishment, the saline solns of generation are discharged in time, and the top gas outlet of wet scrubber tower connects tail gas by pipeline The air intake of recirculating system, when tail gas enters in tail gas recirculation system, on-line monitoring system is started working, when tail gas is up to standard When flow through air-introduced machine from line pipeline after discharge, when tail gas is not up to standard, then close in line pipeline, open recirculation conduit, tail Gas along recirculation conduit and air blower be sent into fresh air is mixed and is fed again into cooling treating column, wherein, wet scrubbing 5 layers of grid are set in tower, and a large amount of a diameter of 5cm acid and alkali-resistance plastic beads is placed above in every layer of grid；
Collect and electrostatic equipment is set in chimney, the voltage of electrostatic equipment is 220v；Exist automatically provided with tail gas at tail gas recirculation system Line monitor.
A kind of 2. industrial refuse cracking incineration tail gas processing method according to claim 1, it is characterised in that multilayer cloth bag Three layers of cloth bag of arranged in series in deduster.
CN201710926918.2A 2016-01-11 2016-01-11 Industrial garbage cracking incineration tail gas treatment method Active CN107497267B (en)

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