CN110404397A - A kind of polluted gas deep-purifying method - Google Patents

A kind of polluted gas deep-purifying method Download PDF

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Publication number
CN110404397A
CN110404397A CN201910708277.2A CN201910708277A CN110404397A CN 110404397 A CN110404397 A CN 110404397A CN 201910708277 A CN201910708277 A CN 201910708277A CN 110404397 A CN110404397 A CN 110404397A
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China
Prior art keywords
gas
polluted gas
polluted
passed
purifying method
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Withdrawn
Application number
CN201910708277.2A
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Chinese (zh)
Inventor
韩晓春
席颖
韩冰
汪为忠
倪路
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Hefei Qianmeng Environmental Technology Co Ltd
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Hefei Qianmeng Environmental Technology Co Ltd
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Priority to CN201910708277.2A priority Critical patent/CN110404397A/en
Publication of CN110404397A publication Critical patent/CN110404397A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
    • 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
    • B01D53/26—Drying 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
    • B01D53/46—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
    • B01D53/74—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
    • 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
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20723—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20769—Molybdenum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20776—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • 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
    • 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

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

Abstract

The invention discloses a kind of polluted gas deep-purifying methods, comprising the following steps: S1, dust removal process: by polluted gas by dedusting filter, filtering out the dust in polluted gas；S2, removal imflammable gas: the polluted gas after dedusting is passed through combustion furnace, removes imflammable gas；S3, desulphurization denitration carbonization treatment: the gas after burning is passed through in desulfurizing tower, denitrating tower and decarbonizing tower and carries out desulfurization operations, denitration operation and Decarburization Operation, obtains preliminary purification gas；S4, conversion processing: being hydroaropic substance by the poisonous and harmful substance modification not soluble in water of preliminary purification gas；S5, drying process.The present invention can to polluted gas carry out depth be effectively treated, it is easy to operate, and can reasonable energy utilization resource, reduce consumption, reduce cost, it is practical.

Description

A kind of polluted gas deep-purifying method
Technical field
The present invention relates to exhaust-gas treatment related fields, specially a kind of polluted gas deep-purifying method.
Background technique
With social industrial expansion, with and a large amount of polluted gas that comes becomes people and must solve the problems, such as, and The most higher cost of the solution of existing polluted gas, and it is complicated for operation, clean-up effect is unsatisfactory, causes resource unrestrained Take, designs a kind of polluted gas deep-purifying method now to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of polluted gas deep-purifying methods, to solve to propose in above-mentioned background technique The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of polluted gas deep-purifying method, including with Lower step:
S1, dust removal process: by polluted gas by dedusting filter, the dust in polluted gas is filtered out；
S2, removal imflammable gas: the polluted gas after dedusting is passed through combustion furnace, removes imflammable gas；
S3, desulphurization denitration carbonization treatment: the gas after burning is passed through in cooling chamber and is cooled to room temperature, is then passed to Desulfurization operations, denitration operation and Decarburization Operation are carried out in desulfurizing tower, denitrating tower and decarbonizing tower, obtain preliminary purification gas；
S4, conversion processing: preliminary purification gas is passed through in plasma reactor will be poisonous and harmful insoluble in gas It is hydroaropic substance in the substance modification of water, then passes in water and obtain secondary stage purified gas；
S5, drying process: secondary stage purified gas is passed through in drying device and is dried to obtain final purification gas, is discharged into In atmosphere.
It preferably, include adsorbent in the dedusting filter, the adsorbent includes active carbon, and Adsorption is dirty Contaminate the oiliness flue gas in gas.
Preferably, the desulfurizing agent in the step 3 in desulfurizing tower includes zinc oxide slurries, calcium hydroxide solution, magnesia Any one of solution.
Preferably, the denitrfying agent in the denitrating tower in the step 3 includes denitrating catalyst, the denitrating catalyst with TiO2For carrier, with V2O5Or V2O5-WO3Or V2O5-MoO3For active constituent, cellular type is made.
Preferably, the decarburizer in the decarbonizing tower in the step 3 includes any one of potassium carbonate or calcium oxide.
Preferably, the thermal energy that desulphurization denitration decarburizing reaction generates in the step 3 is collected by heat exchanger to be used Elsewhere.
Preferably, the waste water generated after the purification in the step 4 is purified water by biodegrade, carries out circulation benefit With.
Preferably, the desiccant in the drying device in the step 5 includes that quick lime, soda lime or sodium hydroxide are solid Any one of body.
Compared with prior art, the beneficial effects of the present invention are: a kind of polluted gas deep-purifying method of the present invention passes through Dust and imflammable gas in dust-extraction unit and combustion method the removal polluted gas of setting, facilitate subsequent processing；It is arranged Desulphurization denitration Decarburization Operation can further purifying contaminated gas, while be provided with heat exchanger collect the thermal energy that is generated in reaction into Row utilizes, energy saving；Purification recycling is carried out by the waste water that biodegrade generates reaction, is economized on resources, pollution is reduced Gas purification cost；The present invention can rapidly and efficiently purify polluted gas, while the energy that economizes on resources, and reduce cost, It is practical.
Detailed description of the invention
Fig. 1 is method and step figure of the invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of polluted gas deep-purifying method, including following step It is rapid:
S1, dust removal process: by polluted gas by dedusting filter, the dust in polluted gas is filtered out；
S2, removal imflammable gas: the polluted gas after dedusting is passed through combustion furnace, removes imflammable gas；
S3, desulphurization denitration carbonization treatment: the gas after burning is passed through in cooling chamber and is cooled to room temperature, is then passed to Desulfurization operations, denitration operation and Decarburization Operation are carried out in desulfurizing tower, denitrating tower and decarbonizing tower, obtain preliminary purification gas；
S4, conversion processing: preliminary purification gas is passed through in plasma reactor will be poisonous and harmful insoluble in gas It is hydroaropic substance in the substance modification of water, then passes in water and obtain secondary stage purified gas；
S5, drying process: secondary stage purified gas is passed through in drying device and is dried to obtain final purification gas, is discharged into In atmosphere.
It further, include adsorbent in the dedusting filter, the adsorbent includes active carbon, Adsorption Oiliness flue gas in polluted gas.
Further, the desulfurizing agent in the step 3 in desulfurizing tower includes zinc oxide slurries, calcium hydroxide solution, oxidation Any one of magnesium solution.
Further, the denitrfying agent in the denitrating tower in the step 3 includes denitrating catalyst, the denitrating catalyst with TiO2 is carrier, with V2O5Or V2O5-WO3Or V2O5-MoO3For active constituent, cellular type is made.
Further, the decarburizer in the decarbonizing tower in the step 3 includes any one of potassium carbonate or calcium oxide.
Further, the thermal energy that desulphurization denitration decarburizing reaction generates in the step 3 is collected utilization by heat exchanger It arrives elsewhere.
Further, the waste water generated after the purification in the step 4 is purified water by biodegrade, is recycled It utilizes.
Further, the desiccant in the drying device in the step 5 includes quick lime, soda lime or sodium hydroxide Any one of solid.
Working principle: a kind of polluted gas deep-purifying method of the present invention, at work, first by polluted gas by removing Dirt device, by the dedusting adsorbent in dust-extraction unit in polluted gas dust or oiliness flue dust carry out Adsorption, Then the polluted gas after dedusting is passed through combustion chamber to burn, the imflammable gas in polluted gas is subjected to burning It removes, then the polluted gas after burning is passed through after being cooled to room temperature in cooling chamber and is passed through in desulfurizing tower, pass through desulfurizing tower In desulfurizing agent in polluted gas sulfurous gas carry out desulfurization operations, then pass in denitrating tower, by denitrating tower Denitrating catalyst carries out out of stock operation to the body containing niter air in polluted gas, is then passed through in decarbonizing tower, will be in polluted gas Carbonaceous gas carries out Decarburization Operation, and the heat generated in desulphurization denitration decarbonizing process passes through heat exchanger Collection utilization to other works Make place, it is energy saving, it is passed through in plasma reactor after the completion of desulphurization denitration decarburization, by plasma reactor A large amount of active particles carry out direct preliminary exposition removal to poisonous and harmful polluted gas, macromolecular that is complicated, being insoluble in water Poisonous and harmful substance is decomposed into simple small-molecule substance, and the pollutant in gas is made to change into hydroaropic substance, then will be dirty Dye gas, which is passed through in water, carries out dissolution removal to toxic and harmful gas, the waste water of generation by biodegradation by waste water again It is converted into pure water, is recycled, it is energy saving, the gas after deep purifying is then passed through drying device, by dry Desiccant in dry device is passed through atmosphere after purified gas is dried.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (8)

1. a kind of polluted gas deep-purifying method, which comprises the following steps:
S1, dust removal process: by polluted gas by dedusting filter, the dust in polluted gas is filtered out；
S2, removal imflammable gas: the polluted gas after dedusting is passed through combustion furnace, removes imflammable gas；
S3, desulphurization denitration carbonization treatment: the gas after burning is passed through in cooling chamber and is cooled to room temperature, desulfurization is then passed to Desulfurization operations, denitration operation and Decarburization Operation are carried out in tower, denitrating tower and decarbonizing tower, obtain preliminary purification gas；
S4, conversion processing: preliminary purification gas is passed through in plasma reactor will be poisonous and harmful not soluble in water in gas Substance modification be hydroaropic substance, then pass in water and obtain secondary stage purified gas；
S5, drying process: secondary stage purified gas is passed through in drying device and is dried to obtain final purification gas, is discharged into atmosphere In.
2. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: the dedusting filter In include adsorbent, the adsorbent includes active carbon, the oiliness flue gas in Adsorption polluted gas.
3. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: desulfurization in the step 3 Desulfurizing agent in tower includes any one of zinc oxide slurries, calcium hydroxide solution, magnesium oxide solution.
4. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: de- in the step 3 Denitrfying agent in nitre tower includes denitrating catalyst, and the denitrating catalyst is with TiO2For carrier, with V2O5Or V2O5-WO3Or V2O5- MoO3For active constituent, cellular type is made.
5. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: de- in the step 3 Decarburizer in carbon tower includes any one of potassium carbonate or calcium oxide.
6. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: desulfurization in the step 3 The thermal energy that denitration decarburizing reaction generates is collected by heat exchanger to be used elsewhere.
7. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: net in the step 4 The waste water generated after change is purified water by biodegrade, is recycled.
8. a kind of polluted gas deep-purifying method according to claim 1, it is characterised in that: dry in the step 5 Desiccant in dry device includes any one of quick lime, soda lime or sodium hydrate solid.
CN201910708277.2A 2019-08-01 2019-08-01 A kind of polluted gas deep-purifying method Withdrawn CN110404397A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114442569A (en) * 2021-12-21 2022-05-06 南京交通职业技术学院 Comprehensive energy environment-friendly system based on cloud edge cooperation and control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114442569A (en) * 2021-12-21 2022-05-06 南京交通职业技术学院 Comprehensive energy environment-friendly system based on cloud edge cooperation and control method
CN114442569B (en) * 2021-12-21 2024-05-21 南京交通职业技术学院 Comprehensive energy environment-friendly system based on cloud edge cooperation and control method

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