CN107120660A - A kind of domestic garbage pyrolysis incinerator flue gas purification system - Google Patents

A kind of domestic garbage pyrolysis incinerator flue gas purification system Download PDF

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Publication number
CN107120660A
CN107120660A CN201710266670.1A CN201710266670A CN107120660A CN 107120660 A CN107120660 A CN 107120660A CN 201710266670 A CN201710266670 A CN 201710266670A CN 107120660 A CN107120660 A CN 107120660A
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China
Prior art keywords
flue gas
bioxin
heat
electromagnetic pulse
flue
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Pending
Application number
CN201710266670.1A
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Chinese (zh)
Inventor
马文超
陈冠益
潘敏慧
何啸
台凌宇
颜蓓蓓
钟磊
程占军
杜桂月
李丽萍
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Tianjin University
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Tianjin University
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Priority to CN201710266670.1A priority Critical patent/CN107120660A/en
Publication of CN107120660A publication Critical patent/CN107120660A/en
Priority to PCT/CN2018/083865 priority patent/WO2018192564A1/en
Pending legal-status Critical Current

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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
    • F23G5/44—Details; Accessories
    • 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
    • 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
    • B01D53/40—Acidic 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • 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
    • B01D53/81—Solid phase processes
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8659—Removing halogens or halogen compounds
    • B01D53/8662—Organic halogen compounds
    • 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
    • F23J15/006—Layout of treatment plant
    • 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
    • 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
    • B01D2251/40—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
    • B01D2251/604—Hydroxides
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/93—Toxic compounds not provided for in groups B01D2257/00 - B01D2257/708
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/30—Halogen; Compounds thereof
    • F23J2215/301—Dioxins; Furans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/101—Baghouse type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

The present invention relates to a kind of domestic garbage pyrolysis incinerator flue gas purification system；Including chilling tower, electromagnetic pulse deduster, UTILIZATION OF VESIDUAL HEAT IN and cooling device, Carbon fibe filter, heat-exchanger rig, bioxin chemical catalysis device, water system, flue and air-introduced machine；It is characterized in that the entrance point of chilling tower is connected with the flue of domestic garbage pyrolysis incinerator, the port of export of chilling tower is connected with the electromagnetic pulse deduster, electromagnetic pulse deduster is connected with UTILIZATION OF VESIDUAL HEAT IN with cooling device, UTILIZATION OF VESIDUAL HEAT IN is connected with cooling device with the Carbon fibe filter, Carbon fibe filter is connected with the air-introduced machine, air-introduced machine outlet connection heat-exchanger rig, heat-exchanger rig outlet Lian Jie bioxin chemical catalysis device bioxin chemical catalysis devices are connected with chimney, and flue gas is ultimately discharged into air by a series of purifications.Enough pollutants effectively removed in incineration flue gas, including CO, SO2、NOXThe , bioxin concentration such as, bioxin meets national standard.

Description

A kind of domestic garbage pyrolysis incinerator flue gas purification system
Technical field
The present invention relates to domestic rubbish disposal disposal and recycling neighborhood system, more particularly to a kind of house refuse Pyrolysis incineration device flue gas purification system.
Background technology
The conventional waste treatment and disposal mode of current China has：Sanitary landfill method, garbage compost method and heat treating process etc..Defend Raw landfill is the major way of the current garbage disposal of China, and this processing mode technology is simple, and treating capacity is big, but land occupation is provided Source is excessive, there are problems that addressing hardly possible, leachate contamination, and not to rubbish carry out recycling.By It is being continuously increased in the quantity of the compositions such as house refuse packaging material, stationery and plastics, bringing some to garbage compost asks Topic, and the market access hardly possible of saline Land, product is easily caused after compost, it is restricted its development.And rubbish is heat-treated Technology is had a clear superiority in terms of volume reduction, decrement, recycling, refuse incineration technology, and country is received in recent years Attention, will be the Main way of waste treatment and disposal and recycling from now on.
Heat treatment technics is substantially that rubbish is aoxidized and decomposed at high temperature, to form stable solid residue, but Substantial amounts of pernicious gas can be discharged during pyrolytic incineration, dust and fine particle are flown upward with the wind, cause various pollutions in air Thing index is exceeded, and can produce substantial amounts of strong carcinogen bioxin, and this is the master of current restriction pyrolytic incineration treatment technology Want factor.
In order to prevent producing secondary pollution to environment during incineration treatment of garbage, it is necessary to adopt rigid measures, utilize Flue gas purification system controls the discharge of flue gas of refuse burning.The removing of acid gas in flue gas has three kinds of handling process：Dry method, half Dry method and wet method.Semidry method purification technique can reach higher purification efficiency, and investment and operating cost are low, and flow is simple, does not produce Raw waste water, European incineration plant is using the more of semidry method.Semidry method has more successful application example at home, have accumulated Certain operating experience, it is adaptable to which discharge standard requires higher incineration plant, now China burnt with most rubbish yet to be built building Burn power plant and all select semidry method.Its technics comparing of dry purification process is simple, invests low, operation maintenance is convenient, but dry method work Skill purification efficiency is relatively low, using more in the incineration plant of Japan in recent years is built.The pollutant purification of wet cleaning technique Efficiency highest, can meet most stringent of discharge standard requirement.But because flow is complicated, corollary equipment is more, one-time investment and Operating cost is high, applies more in developed country, cannot extensive use in China.For NOx removal effect, SCR has reached more than 90% to NOx clearance, and SNCR also can reach 50% or so to NOx clearance.With regard to cost-effect Rate is analyzed, and SCR and advanced burning control system are substantially suitable, hence it is evident that more expensive than SNCR technology.Opened from late 1980s Begin, garbage burning factory more uses sack cleaner, its removal efficiency to dust can reach more than 99.9%.China《It is raw Incineration treatment of garbage engineering legislation living》(CJJ90-2009) clear stipulaties domestic waste incineration dust arrester must be adopted in Use sack cleaner.And electrostatic precipitator is widely used in garbage burning factory from 1970s.With environmental protection ideas Enhancing, activated carbon is increasingly used dioxin with heavy metal adsorption effect by garbage incinerating power plant.
In the flue gas that incineration process of domestic garbage is produced, SO is mainly contained2, HCl, NOx, heavy metal is He dioxin etc. has Evil material.In recent years, except the control of traditional desulphurization denitration and particulate matter, dioxin contamination causes the people of other countries Common concern, and garbage burning factory is one of the main source for producing bioxin, due at present to the formation machine of dioxin Reason does not reach unified common recognition also, therefore suppresses the generation of dioxin by only controlling to burn parameter, and its effect is difficult true It is fixed, therefore the processing of follow-up Dui bioxin just becomes particularly critical.With expanding economy, flue gas of refuse burning discharge standard More and more stricter , bioxin is from 1mg/m originally3To 0.5mg/m3, then 0.1mg/m by now3, for the processing of bioxin Also need badly and carry out new change.
The content of the invention
The present invention provides a kind of domestic garbage pyrolysis incinerator flue gas purification system, originally can effectively remove burning cigarette Pollutant in gas, including CO, SO2、NOX, bioxin etc., handled with having carried out multistage especially for bioxin difficult to deal with, Bioxin concentration can reach better than more than national standard three times in discharge flue gas, serve the purpose of environmental protection.
Technical scheme is as follows：
A kind of domestic garbage pyrolysis incinerator flue gas purification system, including chilling tower, electromagnetic pulse deduster, waste heat profit With with cooling device, Carbon fibe filter, heat-exchanger rig, bioxin chemical catalysis device, water system, flue and drawing Blower fan；It is characterized in that the entrance point of chilling tower is connected with the flue of domestic garbage pyrolysis incinerator, the outlet of chilling tower End be connected with the electromagnetic pulse deduster, electromagnetic pulse deduster is connected with UTILIZATION OF VESIDUAL HEAT IN with cooling device, UTILIZATION OF VESIDUAL HEAT IN and Cooling device is connected with the Carbon fibe filter, and Carbon fibe filter is connected with the air-introduced machine, and air-introduced machine outlet connects Heat-exchanger rig is connect, heat-exchanger rig outlet Lian Jie bioxin chemical catalysis device , bioxin chemical catalysis devices are connected with chimney, cigarette Gas is ultimately discharged into air by a series of purifications.
The chilling tower internal upper part is furnished with shower；Flue-gas temperature is 160 DEG C -180 DEG C after cooling.
It is made up of in the electromagnetic pulse deduster many cloth bags, the pollutant in flue gas is adsorbed on filter bag surface.
The electromagnetic pulse deduster is provided with pulse valve.
Auxiliary agent throwing device is installed on flue between the chilling tower and the electromagnetic pulse deduster；Add Calcium hydroxide and reaction promoter, remove the various sour gas in flue gas Ji bioxin, flue-gas temperature reduces to 100 DEG C -140 DEG C.
UTILIZATION OF VESIDUAL HEAT IN and cooling device are connected between the electromagnetic pulse deduster and the Carbon fibe filter；Heat energy Flue gas after utilization enters back into cooling device, flue-gas temperature is down to 40 DEG C -60 DEG C.
The Carbon fibe filter is made up of several Carbon fiber filter element ordered arrangements.
The air-introduced machine is located at after the Carbon fibe filter, using frequency control, it is ensured that be pyrolyzed under different operating modes Furnace pressure required for incinerator.
The heat-exchanger rig is located at the top of pyrogenation incinerator；Temperature reaches 210 DEG C -250 DEG C.
The bioxin chemical catalysis device is combined by several catalyst modules, generally one erect it is rectangular Catalyst in body, module can decompose dioxin catalysis oxidation, generate innocuous substance.
It is described as follows：
The chilling tower main function is to carry out cooling processing, the chilling to the flue gas that refuse pyrolysis incinerator is produced Tower internal upper part is furnished with shower, and the shower is arranged on chilling tower top, and cooling water sprays from the shower, right Flue gas is drastically cooled, and cooling water circulation is utilized.
It is made up of in the electromagnetic pulse deduster many cloth bags, the pollutant in flue gas is adsorbed on filter bag surface, can be had Imitate the pernicious gases such as deacidification, Xi Fu bioxin.
The electromagnetic pulse deduster is provided with pulse valve, and set of pulses valve is driven every time to remove the part cloth that it is controlled The dust of bag or filter cylinder, and other cloth bags or filter cylinder normal work, are opened every lower set of pulses valve after a period of time, under cleaning A part of deduster.
Auxiliary agent throwing device is installed on flue between the chilling tower and the electromagnetic pulse deduster, added Calcium hydroxide and reaction promoter (active carbon powder), remove the various sour gas in flue gas Ji bioxin.
The Carbon fibe filter is made up of several Carbon fiber filter element ordered arrangements, can be further to Yan gas Zhong bis- Evil The pernicious gases such as English carry out filtering absorption.
The air-introduced machine is located at after the Carbon fibe filter, and using frequency control, it is to ensure different works that it, which acts on one, Furnace pressure under condition required for the pyrolysis incineration device, two be that the Carbon fibe filter exiting flue gas is drawn into institute State heat-exchanger rig.
The heat-exchanger rig is located at the top of the pyrogenation incinerator, and flue gas is filled by the heat exchange of air-introduced machine feeding Put, carry out heating treatment.
The bioxin chemical catalysis device is combined by several catalyst modules, generally one erect it is rectangular Catalyst in body, module can decompose dioxin catalysis oxidation, generate the things such as harmless water vapour, carbon dioxide, hydrogen chloride Matter, service life is more than 16000 hours.
Compared with prior art, the invention has the advantages that：
1st, the gas cleaning that house refuse thermal incineration is discharged can be reached or even be substantially better than national standard by the system, and Used it is contemplated that producing low-pressure steam using the sensible heat in flue gas for plant produced life；
2nd, the method that the system uses two stages for the treatment of dioxin in flue gas, processing Hou bioxin concentration can reach better than country Standard；
3rd, the system is heated up the flue gas suction heat-exchanger rig by Carbon fibe filter, beneficial to follow-up bis- Evil The processing of English chemical catalysis device；
4th, the system only has two water pumps, an air pump and an air-introduced machine, reduces auxiliary equipment, increases the peace of the system Full reliability, reduces the operating cost of the system；
5th, incineration flue gas has been carried out more thoroughly purifying, has reduced the discharge of flue gas, reduce environmental pollution.
6th, the domestic garbage pyrolysis incinerator flue gas purification system that the present invention is provided can effectively remove incineration flue gas In pollutant, including CO, SO2、NOX, bioxin etc., national standard can be met by especially discharging bioxin concentration in flue gas (<0.03ng/m3)。
Brief description of the drawings
Fig. 1：The structural representation of domestic garbage pyrolysis incinerator flue gas purification system.
Wherein, 1, domestic garbage pyrolysis incinerator；2nd, chilling tower；3rd, electromagnetic pulse deduster；4th, UTILIZATION OF VESIDUAL HEAT IN and cooling Device；5th, Carbon fibe filter；6th, air-introduced machine；7th, heat-exchanger rig；8th, bioxin chemical catalysis device；9th, chimney；10th, auxiliary agent Throwing device 1；11st, auxiliary agent throwing device 2；12nd, shower；13rd, cloth bag.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Below in conjunction with the drawings and specific embodiments to domestic garbage pyrolysis incinerator gas cleaning system proposed by the present invention System is described in further detail.According to following explanation and claims, advantages and features of the invention will become apparent from.Need explanation , accompanying drawing uses very simplified form and uses non-accurately ratio, only conveniently, lucidly to aid in illustrating originally The purpose of inventive embodiments.
Fig. 1 is refer to, Fig. 1 is the knot of domestic garbage pyrolysis incinerator flue gas purification system provided in an embodiment of the present invention Structure schematic diagram.
The embodiment of the present invention provides a kind of domestic garbage pyrolysis incinerator flue gas purification system, it include chilling tower (2), Electromagnetic pulse deduster (3), UTILIZATION OF VESIDUAL HEAT IN and cooling device (4), Carbon fibe filter (5), heat-exchanger rig (7), bioxin Chemical catalysis device (8), water system, flue and air-introduced machine (6), the entrance point and house refuse of the chilling tower (2) The flue connection of pyrolysis incineration device, the port of export of the chilling tower (2) is connected with the electromagnetic pulse deduster (3), The electromagnetic pulse deduster (3) is connected with UTILIZATION OF VESIDUAL HEAT IN with cooling device (4), the UTILIZATION OF VESIDUAL HEAT IN and cooling device (4) with Carbon fibe filter (5) connection, the Carbon fibe filter (5) is connected with the air-introduced machine (6), and flue gas passes through institute State after air-introduced machine (6) feeding heat-exchanger rig (7) heating, into the bioxin chemical catalysis device (8), the bioxin chemistry Catalytic unit (8) is connected with chimney (9), and flue gas is ultimately discharged into air by a series of purifications.
Chilling tower (2) internal upper part is furnished with shower (12), and the shower (12) is arranged on the chilling tower top, Cooling water sprays from the shower 12.
It is made up of in the electromagnetic pulse deduster (3) many cloth bags (13), the pollutant in flue gas is adsorbed in filter bag table Face, can effectively deacidify, the pernicious gas such as Xi Fu bioxin.
Auxiliary agent is installed on flue between the chilling tower (2) and the electromagnetic pulse deduster (3) and adds dress 1 (10), auxiliary agent throwing device 2 (11) are put, calcium hydroxide and reaction promoter (active carbon powder) is added, removed various in flue gas Sour gas is Ji bioxin.
Each main portions of the domestic garbage pyrolysis incinerator flue gas purification system are fitted with thermocouple, use PLC automation control systems monitor temperature change, while the adding of auxiliary agent, power of blower fan etc. can also be controlled.
When the system is normally run, house refuse is thermally decomposed in the pyrogenation incinerator (1), furnace diameter 1.2m, height 1.88m, using Q235 carbon steels, internal layer is fire resisting high-temperature material, and outer wall steel plate 6mm is thick, and inner bag steel plate 8mm is thick, resistance to Fiery material thickness 100mm, daily operating time 8-10h, treating capacity 10t/d, in-furnace temperature is up to 700 DEG C -900 DEG C.Pyrolysis is burnt The shower (12) that flue gas produced by burning is sent into the chilling tower (2), the chilling tower (2) by flue is opened Begin water spray, and cooling water carries out quick refrigeration to flue gas, and cooling water can be recycled, and flue-gas temperature is reduced to after cooling 160 DEG C -180 DEG C, added after cooling in flue by auxiliary agent throwing device 1 (10) plus throwing calcium hydroxide by auxiliary agent Device 2 (11) plus throwing active carbon powder；Lime pump and activated carbon powder pump rated power are 0.75kw, and dosage is automatic by PLC Networked control systems are adjusted, main to reduce in the various sour gas and bioxin in flue gas, calcium hydroxide and sour gas, Active carbon powder Xi Fu bioxin.Flue gas cools through over-quenching, add auxiliary agent reaction after, temperature damping to 100 DEG C -140 DEG C, its In unreacted calcium hydroxide and reaction promoter (active carbon powder), into the electromagnetic pulse sack cleaner (3), absorption exists Filter bag surface, can effectively deacidify, the pernicious gas such as Xi Fu bioxin, and the particle content in flue gas is reduced to 5mg/m3Hereinafter, NOx reduction is to 400mg/m3Left and right, SO2It is reduced to 100mg/m3Left and right , bioxin is reduced to 2~3ng/m3.Because Carbon fibe is inhaled Temperature needed for attached is relatively low, and the high-temperature flue gas duct section of electromagnetic pulse deduster (3) outlet sets the heat recovery dress (4) are put, heat energy in high-temperature flue gas is collected with heat-exchanger rig, the flue gas after heat energy utilization, which enters back into cooling device, to be continued to drop Temperature, makes flue-gas temperature be down to 40 DEG C -60 DEG C.Enter the Carbon fibe filter (5) after flue gas cooling, the device is by several Carbon fiber filter element ordered arrangement constitute, active carbon adsorption material price 10w/t, consumption 150kg, can pickling, further to flue gas The pernicious gases such as Zhong bioxin carry out filtering absorption, and the dioxin in flue gas content handled is reduced to 1ng/m3Below.It is described Air-introduced machine (6) is arranged on Carbon fibe filter (5) rear, and the air-introduced machine (6) uses frequency control, and it, which acts on one, is Ensure the furnace pressure required for refuse pyrolysis incinerator (1) under different operating modes, make to be in negative pressure state in burning pyrolysis oven； Two be that Carbon fibe filter (5) exiting flue gas is drawn into the heat-exchanger rig (7), because what is used is new de- Bioxin catalyst Applicable temperature is 180 DEG C -250 DEG C, and flue gas reaches 210 DEG C -250 DEG C by the heat-exchanger rig (7), then Into the bioxin chemical catalysis device (8).The device is combined by several catalyst modules, generally one setting Cuboid, catalyst uses the new Tuo bioxin catalyst of Shanghai company exploitation, and catalyst is cellular or particle Shape, price is 13w/m3, the catalyst in module can decompose dioxin catalysis oxidation, generate harmless water vapour, titanium dioxide The materials such as carbon, hydrogen chloride, service life is more than 16000 hours.Flue gas after treatment can reach effect shown in table 1, symbol Close《Consumer waste incineration contamination control standard》(GB18485-2014) flue gas pollutant is discharged in for domestic waste incineration The requirement of limit value, air is discharged into finally by chimney (9).
Flue gas pollutant index after the processing of table 1
Obviously, those skilled in the art can carry out various changes and the essence deformed without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (10)

1. a kind of domestic garbage pyrolysis incinerator flue gas purification system, including chilling tower, electromagnetic pulse deduster, UTILIZATION OF VESIDUAL HEAT IN With cooling device, Carbon fibe filter, heat-exchanger rig, bioxin chemical catalysis device, water system, flue and air inducing Machine；It is characterized in that the entrance point of chilling tower is connected with the flue of domestic garbage pyrolysis incinerator, the port of export of chilling tower Be connected with the electromagnetic pulse deduster, electromagnetic pulse deduster is connected with UTILIZATION OF VESIDUAL HEAT IN with cooling device, UTILIZATION OF VESIDUAL HEAT IN with it is cold But device is connected with the Carbon fibe filter, and Carbon fibe filter is connected with the air-introduced machine, air-introduced machine outlet connection Heat-exchanger rig, heat-exchanger rig outlet Lian Jie bioxin chemical catalysis device , bioxin chemical catalysis devices are connected with chimney, flue gas Air is ultimately discharged into by a series of purifications.
2. device as claimed in claim 1, it is characterized in that the chilling tower internal upper part is furnished with shower；The flue gas after cooling Temperature is 160 DEG C -180 DEG C.
3. device as claimed in claim 1, it is characterized in that being made up of in the electromagnetic pulse deduster many cloth bags, in flue gas Pollutant adsorb on filter bag surface.
4. device as claimed in claim 1, it is characterized in that the electromagnetic pulse deduster is provided with pulse valve, opens one group of arteries and veins every time Valve is rushed to remove the dust of part cloth bag that it is controlled or filter cylinder, and other cloth bags or filter cylinder normal work, every one section Lower set of pulses valve is opened after time, deduster described in cleaning next part.
5. device as claimed in claim 1, it is characterized in that the flue gas between the chilling tower and the electromagnetic pulse deduster Auxiliary agent throwing device is installed on pipeline；Calcium hydroxide and reaction promoter are added, the various sour gas and two in flue gas are removed Evil English, flue-gas temperature reduces to 100 DEG C -140 DEG C.
6. device as claimed in claim 1, it is characterized in that in the electromagnetic pulse deduster and the Carbon fibe filter Between connection UTILIZATION OF VESIDUAL HEAT IN and cooling device；Flue gas after heat energy utilization enters back into cooling device, make flue-gas temperature be down to 40 DEG C- 60℃。
7. device as claimed in claim 1, it is characterized in that the Carbon fibe filter is orderly by several Carbon fiber filter elements Rearrange.
8. device as claimed in claim 1, it is characterized in that the air-introduced machine is located at after the Carbon fibe filter, using change Frequency modulation speed, it is ensured that the furnace pressure under different operating modes required for pyrolysis incineration device.
9. device as claimed in claim 1, it is characterized in that the heat-exchanger rig is located at the top of pyrogenation incinerator；Temperature reaches 210℃-250℃。
10. device as claimed in claim 1, it is characterized in that the bioxin chemical catalysis device is by several catalyst moulds Block is combined, generally one cuboid erect, and the catalyst in module can decompose dioxin catalysis oxidation, generate harmless Material.
CN201710266670.1A 2017-04-21 2017-04-21 A kind of domestic garbage pyrolysis incinerator flue gas purification system Pending CN107120660A (en)

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Application publication date: 20170901