CN113058387A - Treatment process method for reducing emission of dioxin in cremator flue gas - Google Patents

Treatment process method for reducing emission of dioxin in cremator flue gas Download PDF

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Publication number
CN113058387A
CN113058387A CN202110355810.9A CN202110355810A CN113058387A CN 113058387 A CN113058387 A CN 113058387A CN 202110355810 A CN202110355810 A CN 202110355810A CN 113058387 A CN113058387 A CN 113058387A
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China
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flue gas
dioxin
flue
tower
quenching
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Inventor
尹文华
刘丽君
谢丹平
李旭东
孙行荣
张漫雯
赵波
彭江波
龙世康
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South China Institute of Environmental Science of Ministry of Ecology and Environment
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South China Institute of Environmental Science of Ministry of Ecology and Environment
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Priority to CN202110355810.9A priority Critical patent/CN113058387A/en
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    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1431—Pretreatment by other 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
    • B01D53/14—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 by absorption
    • B01D53/1431—Pretreatment by other processes
    • B01D53/1437—Pretreatment by adsorption
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1431—Pretreatment by other processes
    • B01D53/145—Pretreatment by separation of solid or liquid material
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1456—Removing acid 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
    • B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
    • 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
    • B01D53/46—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
    • B01D53/70—Organic 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
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G1/00—Furnaces for cremation of human or animal carcasses
    • 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
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • 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
    • 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
    • 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

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

Abstract

The invention discloses a treatment process method for reducing the emission of dioxin in cremator flue gas, which belongs to the technical field of flue gas dioxin treatment process methods.

Description

Treatment process method for reducing emission of dioxin in cremator flue gas
Technical Field
The invention relates to the technical field of flue gas dioxin treatment process methods, in particular to a treatment process method for reducing the emission of dioxin in cremator flue gas.
Background
At present, a cremation machine which is commonly used in a crematory in China is a fuel oil type cremation machine, and can generate toxic atmospheric pollutants such as stink, particulate matters, sulfur dioxide, nitrogen oxides, carbon monoxide, dioxin and the like in a combustion process, wherein various gases are released in a cremation process of a remains and are a complex mixed pollution source, wherein the nitrogen oxides, the stink and the dioxin are key points of attention of all social circles, and in addition, the stink released from smoke has strong pungent smell and brings serious influence on the surrounding environment. At present, most of smoke of cremators in funeral parlour in China is deacidified by a semi-dry method and dedusted by a cloth bag, sulfur dioxide and particulate matters in the smoke are only treated by the process device, and the process device has no deep treatment capability on stink, nitrogen oxide and dioxin, and meanwhile, the chimney in funeral parlour industry is generally low in height, so that atmospheric pollutants are diffused near the ground, and therefore harm is caused to the surrounding environment and the health of human bodies.
Disclosure of Invention
The invention aims to provide a treatment process method for reducing the emission of dioxin in the flue gas of a cremator, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a treatment process method for reducing the emission of dioxin in cremator flue gas comprises the following specific steps:
s1: firstly, conveying incineration flue gas in a cremator to a heat exchanger through a conveying pipeline to realize primary cooling, then directly introducing the flue gas into a quenching tower to carry out cooling treatment, wherein the quenching tower is used for quickly reducing the temperature of the flue gas and controlling the low-temperature synthesis of dioxin, and spraying liquid to the flue gas in the quenching tower through a quenching spray system in the quenching tower, so that the temperature of the flue gas in the tower is quickly reduced and the low-temperature synthesis of the dioxin is controlled;
s2: s1, introducing the flue gas subjected to cooling treatment into a spark interceptor, wherein the spark interceptor is used for trapping the comburent in the flue gas, and removing the comburent in the flue gas after the flue gas subjected to cooling treatment by a quench tower enters the spark interceptor, so that the impurity removal safety of the flue gas is improved;
s3: s2, introducing the flue gas subjected to impurity removal in the step S2 into a straight-tube-shaped gas transmission flue, spraying activated carbon into the straight-tube-shaped gas transmission flue by an activated carbon spraying device fixedly mounted on the straight-tube-shaped gas transmission flue to mix with the flue gas, so that the activated carbon is promoted to adsorb pollutants such as dioxin, heavy metals and furan in the flue gas, the adsorption rate of the dioxin and the heavy metals is improved, then the discharged flue gas passes through an alkali liquor spraying tower, and the absorption of the nitric oxide, the stink and the dioxin in the flue gas by the alkali liquor is finished;
s4: s3, introducing the purified flue gas into a bag-type dust collector, wherein the bag-type dust collector collects particulate matters and active carbon particles mixed in the flue gas by using a filter material, and further removing the particulate matters mixed in the flue gas, the sprayed active carbon and incompletely combusted oil smoke by using the bag-type dust collector, and removing some particulate matters which are not melted in water and alkali liquor, wherein the impurity removal amount is high;
s5: the flue gas subjected to impurity removal in the step S4 is conveyed into a heat exchanger through a conveying pipeline to perform heat exchange to finish heating operation, the flue gas heated by the heat exchanger is introduced into a plasma reaction device, high-voltage pulse power supply voltage is introduced into the plasma reaction device through a high-voltage introduction area, corona discharge enables a large amount of high-energy electrons, free radicals, free radical derivatives and other active particles to be generated in the plasma reaction device, pollutants in the flue gas are promoted to perform redox reaction, wherein malodorous and dioxin are directly bombarded by the high-energy electrons or oxidized into harmless micromolecules by the free radicals, and the active particles convert NO which is not easily absorbed in the flue gas into NO which is easily absorbed by alkaline substances2、N2O5And HNO3Part of SO2Is also converted into H2SO4And other small molecule acids, dioxins are converted to CO2Small molecules such as HCl;
s6: and (4) introducing the flue gas in the step S5 into an absorption device, wherein the absorption device is used for trapping acidic substances and residual toxic substances in the flue gas treated by the plasma reaction device to obtain purified flue gas, and then discharging the purified flue gas through a flue.
Compared with the prior art, the invention has the beneficial effects that:
1. firstly, conveying incineration flue gas in a cremator to a heat exchanger through a conveying pipeline to realize primary cooling, then directly introducing the flue gas into a quenching tower to carry out cooling treatment, wherein the quenching tower is used for quickly reducing the temperature of the flue gas and controlling the low-temperature synthesis of dioxin, and spraying liquid to the flue gas in the quenching tower through a quenching spray system in the quenching tower, so that the temperature of the flue gas in the tower is quickly reduced and the low-temperature synthesis of the dioxin is controlled;
2. the flue gas after temperature reduction treatment sequentially passes through a spark interceptor, a straight-barrel gas transmission flue and a bag-type dust remover, the spark interceptor can remove combustion substances mixed in the flue gas, active carbon is sprayed into the straight-barrel gas transmission flue to be mixed with the flue gas, the active carbon is promoted to adsorb pollutants such as dioxin, heavy metals and furan in the flue gas, the adsorption rate of the dioxin and the heavy metals is improved, the bag-type dust remover further removes particles mixed in the flue gas, the sprayed active carbon and incompletely combusted oil smoke, can remove some particles which are not melted in water and alkali liquor, and has high impurity removal amount;
3. introducing flue gas into a plasma reaction device, introducing high-voltage pulse power supply voltage into the plasma reaction device through a high-voltage introduction area, generating a large amount of high-energy electrons, free radicals, free radical derivatives and other active particles in the plasma reaction device through corona discharge, promoting pollutants in the flue gas to generate redox reaction, wherein stink and dioxin are directly bombarded by the high-energy electrons or are oxidized into harmless micromolecules by the free radicals, and the active particles convert NO which is not easily absorbed in the flue gas into NO which is easily absorbed by alkaline substances2、N2O5And HNO3Part of SO2Is also converted into H2SO4And other small molecule acids, dioxins are converted to CO2And HCl and the like, and the flue gas is introduced into the absorption device for trapping acidic substances and residual toxic substances in the flue gas treated by the plasma reaction device, so that the purified flue gas is obtained, and the flue gas purification effect and the purification efficiency are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A treatment process method for reducing the emission of dioxin in cremator flue gas comprises the following specific steps:
s1: firstly, conveying incineration flue gas in a cremator to a heat exchanger through a conveying pipeline to realize primary cooling, then directly introducing the flue gas into a quench tower to carry out cooling treatment, wherein the quench tower is used for rapidly reducing the temperature of the flue gas and controlling the low-temperature synthesis of dioxin, and spraying liquid to the flue gas in the quench tower through a quench spraying system in the quench tower, so that the temperature of the flue gas in the quench tower is rapidly reduced and the low-temperature synthesis of the dioxin is controlled, the quench spraying system is arranged in the quench tower, a waste liquid outlet is formed in the bottom end of the quench tower and is communicated with the quench spraying system through a return pipe, a lifting pump is fixed at the other end of the return pipe, the output end of the lifting pump is connected with the quench spraying system through a pipeline, and the lifting pump is used for conveying part of the waste;
s2: s1, introducing the flue gas subjected to cooling treatment into a spark interceptor, wherein the spark interceptor is used for trapping the comburent in the flue gas, and removing the comburent in the flue gas after the flue gas subjected to cooling treatment by a quench tower enters the spark interceptor, so that the impurity removal safety of the flue gas is improved;
s3: s2, introducing the flue gas subjected to impurity removal in the step S2 into a straight-tube-shaped gas transmission flue, spraying activated carbon into the straight-tube-shaped gas transmission flue by an activated carbon spraying device fixedly mounted on the straight-tube-shaped gas transmission flue to mix with the flue gas, so that the activated carbon is promoted to adsorb pollutants such as dioxin, heavy metals and furan in the flue gas, the adsorption rate of the dioxin and the heavy metals is improved, then the discharged flue gas passes through an alkali liquor spraying tower, and the absorption of the nitric oxide, the stink and the dioxin in the flue gas by the alkali liquor is finished;
s4: s3, introducing the purified flue gas into a bag-type dust collector, wherein the bag-type dust collector collects particulate matters and active carbon particles mixed in the flue gas by using a filter material, further removing the particulate matters mixed in the flue gas, the sprayed active carbon and incompletely combusted oil smoke, and removing some particulate matters which are not melted in water and alkali liquor, wherein the impurity removal amount is high, the bottom of the bag-type dust collector is provided with an ash collecting device, and the ash collecting device is connected with an ash discharge port of the bag-type dust collector through a pipeline and is used for collecting bottom ash discharged from the ash discharge port so as to facilitate the centralized treatment of the dust;
s5: the flue gas subjected to impurity removal in the step S4 is conveyed into a heat exchanger through a conveying pipeline to perform heat exchange to finish heating operation, the flue gas heated by the heat exchanger is introduced into a plasma reaction device, high-voltage pulse power supply voltage is introduced into the plasma reaction device through a high-voltage introduction area, corona discharge enables a large amount of high-energy electrons, free radicals, free radical derivatives and other active particles to be generated in the plasma reaction device, pollutants in the flue gas are promoted to perform redox reaction, wherein malodorous and dioxin are directly bombarded by the high-energy electrons or oxidized into harmless micromolecules by the free radicals, and the active particles convert NO which is not easily absorbed in the flue gas into NO which is easily absorbed by alkaline substances2、N2O5And HNO3Part of SO2Is also converted into H2SO4And other small molecule acids, dioxins are converted to CO2The plasma reaction device is fixedly provided with an ozone generator, the inlet of the ozone generator is connected with the gas outlet of the oxygen cylinder through a connecting pipe, and the outlet of the ozone generator is fixedly assembled with the input end of the plasma reaction device through a flue, so that a proper amount of ozone can be provided for the main flue to oxidize organic pollutants;
s6: and (4) introducing the flue gas in the step S5 into an absorption device, wherein the absorption device is used for trapping acidic substances and residual toxic substances in the flue gas treated by the plasma reaction device to obtain purified flue gas, and then discharging the purified flue gas through a flue.
The process method is an integrated device for simultaneously and deeply treating nitric oxide, stink and dioxin in the smoke of the cremation machine under the condition of not generating white smoke, and the concentration of the nitric oxide in the treated tail gas is not more than 75mg/Nm3The integrated treatment device has the advantages that the odor removal efficiency is greater than 85%, the dioxin removal efficiency is greater than 60%, the integrated treatment device is reasonable in design, the pollutant removal efficiency is high, the integrated treatment device is convenient to install and use and small in occupied area, the deep purification of cremation machine incineration flue gas containing more pollutants such as malodorous gas, sulfide, nitrogen oxide and dioxin can be completed, and the super-purification of cremation machine incineration flue gas is realizedAnd (4) low emission.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. A treatment process method for reducing the emission of dioxin in the flue gas of a cremation machine is characterized by comprising the following steps: the process method comprises the following specific steps:
s1: firstly, conveying incineration flue gas in a cremator to a heat exchanger through a conveying pipeline to realize primary cooling, then directly introducing the flue gas into a quenching tower to carry out cooling treatment, wherein the quenching tower is used for quickly reducing the temperature of the flue gas and controlling the low-temperature synthesis of dioxin, and spraying liquid to the flue gas in the quenching tower through a quenching spray system in the quenching tower, so that the temperature of the flue gas in the tower is quickly reduced and the low-temperature synthesis of the dioxin is controlled;
s2: s1, introducing the flue gas subjected to cooling treatment into a spark interceptor, wherein the spark interceptor is used for trapping the comburent in the flue gas, and removing the comburent in the flue gas after the flue gas subjected to cooling treatment by a quench tower enters the spark interceptor, so that the impurity removal safety of the flue gas is improved;
s3: s2, introducing the flue gas subjected to impurity removal in the step S2 into a straight-tube-shaped gas transmission flue, spraying activated carbon into the straight-tube-shaped gas transmission flue by an activated carbon spraying device fixedly mounted on the straight-tube-shaped gas transmission flue to mix with the flue gas, so that the activated carbon is promoted to adsorb pollutants such as dioxin, heavy metals and furan in the flue gas, the adsorption rate of the dioxin and the heavy metals is improved, then the discharged flue gas passes through an alkali liquor spraying tower, and the absorption of the nitric oxide, the stink and the dioxin in the flue gas by the alkali liquor is finished;
s4: s3, introducing the purified flue gas into a bag-type dust collector, wherein the bag-type dust collector collects particulate matters and active carbon particles mixed in the flue gas by using a filter material, and further removing the particulate matters mixed in the flue gas, the sprayed active carbon and incompletely combusted oil smoke by using the bag-type dust collector, and removing some particulate matters which are not melted in water and alkali liquor, wherein the impurity removal amount is high;
s5: the flue gas subjected to impurity removal in the step S4 is conveyed into a heat exchanger through a conveying pipeline to perform heat exchange to finish heating operation, the flue gas heated by the heat exchanger is introduced into a plasma reaction device, high-voltage pulse power supply voltage is introduced into the plasma reaction device through a high-voltage introduction area, corona discharge enables a large amount of high-energy electrons, free radicals, free radical derivatives and other active particles to be generated in the plasma reaction device, pollutants in the flue gas are promoted to perform redox reaction, wherein malodorous and dioxin are directly bombarded by the high-energy electrons or oxidized into harmless micromolecules by the free radicals, and the active particles convert NO which is not easily absorbed in the flue gas into NO which is easily absorbed by alkaline substances2、N2O5And HNO3Part of SO2Is also converted into H2SO4And other small molecule acids, dioxins are converted to CO2Small molecules such as HCl;
s6: and (4) introducing the flue gas in the step S5 into an absorption device, wherein the absorption device is used for trapping acidic substances and residual toxic substances in the flue gas treated by the plasma reaction device to obtain purified flue gas, and then discharging the purified flue gas through a flue.
2. The treatment process method for reducing the emission of dioxin in cremator flue gas according to claim 1, characterized in that: the quenching tower in the step S1 is internally provided with a quenching spray system, the bottom end of the quenching tower is provided with a waste liquid outlet, the waste liquid outlet is communicated with the quenching spray system through a return pipe, the other end of the return pipe is fixed with a lift pump, the output end of the lift pump is connected with the quenching spray system through a pipeline, and the lift pump is used for conveying part of waste liquid into the quenching tower.
3. The treatment process method for reducing the emission of dioxin in cremator flue gas according to claim 1, characterized in that: and an ash collecting device is arranged at the bottom of the bag-type dust collector in the step S4 and is connected with an ash discharge port of the bag-type dust collector through a pipeline for collecting bottom ash discharged from the ash discharge port, so that the dust can be conveniently and intensively treated.
4. The treatment process method for reducing the emission of dioxin in cremator flue gas according to claim 1, characterized in that: and S5, the plasma reaction device is fixedly provided with an ozone generator, the inlet of the ozone generator is connected with the gas outlet of the oxygen cylinder through a connecting pipe, and the outlet of the ozone generator is fixedly provided with the input end of the plasma reaction device through a flue, so that a proper amount of ozone can be supplied into the main flue to oxidize organic pollutants.
CN202110355810.9A 2021-04-01 2021-04-01 Treatment process method for reducing emission of dioxin in cremator flue gas Pending CN113058387A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113719838A (en) * 2021-08-28 2021-11-30 江苏仙盛环保科技有限公司 Smoke purification furnace and operation method thereof
CN113757669A (en) * 2021-08-16 2021-12-07 洛沙(厦门)科技有限公司 Cremation machine flue gas treatment control system
CN115254423A (en) * 2022-07-18 2022-11-01 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) Low-temperature stink flue gas multi-pollutant deep treatment process and device for sludge co-processing by brick kiln

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130718A (en) * 1998-10-26 2000-05-12 Sanki:Kk Small-sized animal disposing device and method for treating solid treated product produced thereby
JP2001170452A (en) * 1999-10-04 2001-06-26 Nippon Shokubai Co Ltd Treating device for waste gas
CN102151472A (en) * 2011-02-14 2011-08-17 民政部一零一研究所 Small-sized cremation flue gas purification device
CN110180356A (en) * 2019-03-20 2019-08-30 浙江大维高新技术股份有限公司 The processing unit and method of Cremation Machine incineration flue gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130718A (en) * 1998-10-26 2000-05-12 Sanki:Kk Small-sized animal disposing device and method for treating solid treated product produced thereby
JP2001170452A (en) * 1999-10-04 2001-06-26 Nippon Shokubai Co Ltd Treating device for waste gas
CN102151472A (en) * 2011-02-14 2011-08-17 民政部一零一研究所 Small-sized cremation flue gas purification device
CN110180356A (en) * 2019-03-20 2019-08-30 浙江大维高新技术股份有限公司 The processing unit and method of Cremation Machine incineration flue gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113757669A (en) * 2021-08-16 2021-12-07 洛沙(厦门)科技有限公司 Cremation machine flue gas treatment control system
CN113719838A (en) * 2021-08-28 2021-11-30 江苏仙盛环保科技有限公司 Smoke purification furnace and operation method thereof
CN115254423A (en) * 2022-07-18 2022-11-01 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) Low-temperature stink flue gas multi-pollutant deep treatment process and device for sludge co-processing by brick kiln
CN115254423B (en) * 2022-07-18 2023-05-23 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) Low-temperature malodorous smoke multi-pollutant deep treatment process and device for cooperatively treating sludge by brick kiln

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