CN111729505A - Environment-friendly method for removing VOC (volatile organic compounds) in factory - Google Patents

Environment-friendly method for removing VOC (volatile organic compounds) in factory Download PDF

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Publication number
CN111729505A
CN111729505A CN202010428577.8A CN202010428577A CN111729505A CN 111729505 A CN111729505 A CN 111729505A CN 202010428577 A CN202010428577 A CN 202010428577A CN 111729505 A CN111729505 A CN 111729505A
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China
Prior art keywords
treatment
tail gas
factory
alkalization
environment
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Pending
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CN202010428577.8A
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Chinese (zh)
Inventor
王丹亮
万远鑫
韩小兵
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Nanjing Fengqingyang Health Technology Co ltd
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Nanjing Fengqingyang Health Technology Co ltd
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Priority to CN202010428577.8A priority Critical patent/CN111729505A/en
Publication of CN111729505A publication Critical patent/CN111729505A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—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 condensation
    • 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
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01D53/76—Gas phase processes, e.g. by using aerosols
    • 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
    • B01D53/84—Biological processes
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses an environment-friendly method for removing factory VOC, which belongs to the field of industrial waste gas purification. The invention can effectively remove VOC in factories, is energy-saving and environment-friendly, has no secondary pollution and high purification efficiency, can basically enable waste gas to reach harmless standards, is suitable for factories, and is beneficial to promoting the discharge improvement of VOC in factories.

Description

Environment-friendly method for removing VOC (volatile organic compounds) in factory
Technical Field
The invention belongs to the technical field of industrial waste gas purification, and particularly relates to an environment-friendly method for removing VOC in factories.
Background
VOCs are acronyms for volatile organic compounds (volatile organic compounds). VOCs in the general sense are commanding organic matters; but the definition in the environmental protection sense refers to an active class of volatile organic compounds, namely, volatile organic compounds which can cause harm.
In factory production, most industries are accompanied with the generation of VOC, people pay more and more attention to environmental protection requirements along with the development of modern society, a series of methods for reducing factory VOC emission are developed for the specification of factory VOC emission, and an adsorption method, a solvent absorption method, an oxidation method and a biological treatment method are generally adopted.
Therefore, it is very important to develop an environment-friendly method for removing VOC in factories.
Disclosure of Invention
The invention aims to provide an environment-friendly method for removing VOC in factories so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly method for removing factory VOC comprises the following steps:
s1, pretreatment, namely introducing the factory tail gas into pretreatment equipment for pretreatment;
s2, acidifying, namely introducing the pretreated tail gas into an acidifying pool to carry out acidifying;
s3, alkalization, namely introducing the acidified tail gas into alkalization equipment for alkalization;
s4, plasma separation, namely introducing the tail gas subjected to alkalization treatment into an electrolysis device, and separating active ions of organic matters in the waste gas by using high-voltage pulse corona discharge;
s5, thermal oxidation treatment, namely introducing the separated tail gas into a thermal oxidation reactor, and gradually raising the temperature to oxidize the residual organic matter active ions in the tail gas to generate carbon dioxide and water;
s6, condensing the volatile organic compounds in the hot tail gas after condensation and thermal oxidation treatment to generate condensation when encountering cold mixed liquid;
s7, degradation treatment, namely, the condensed gas is converted and degraded by using high-concentration and high-activity oxidizing microorganisms;
and S8, discharging the clean tail gas subjected to degradation treatment into the outside air.
As a preferred embodiment, in S1, the pretreatment includes a spraying treatment, an adsorption treatment, and a filtering treatment.
In a preferred embodiment, the adsorption treatment uses zeolite to adsorb organic substances in the exhaust gas.
In a preferred embodiment, the filtering treatment is filtering with porous activated carbon, and is used for filtering out part of large-particle harmful substances and adsorbing part of harmful gases in the tail gas.
In a preferred embodiment, the acid for the acidification in S2 is one or more of acetic acid, carbonic acid, nitrous acid, and weak acids such as hydrogen sulfuric acid.
In a preferred embodiment, the alkali for the alkalization treatment in S3 is any one or more of weak alkali such as aluminum hydroxide, copper hydroxide, ferric hydroxide or zinc hydroxide.
In a preferred embodiment, in S5, the heating temperature of the thermal oxidation treatment is 250-400 ℃.
In a preferred embodiment, in S7, the oxidizing microorganism is one or more of a desulfurizing bacterium, a hydrocarbon-removing bacterium, or a deaminating bacterium.
Compared with the prior art, the invention has the beneficial effects that: the invention can effectively remove VOC in factories, is energy-saving and environment-friendly, has no secondary pollution and high purification efficiency, can basically enable waste gas to reach harmless standards, is suitable for factories, and is beneficial to promoting the discharge improvement of VOC in factories.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Example 1
The invention provides an environment-friendly method for removing factory VOC, which comprises the following steps:
s1, preprocessing, namely introducing the factory tail gas into preprocessing equipment for spraying processing, then utilizing zeolite for adsorption processing, filtering the processed product through an activated carbon net to finish preprocessing the waste gas, and removing the organic waste gas which has large granularity and can be precipitated in the organic waste gas;
s2, acidifying, namely introducing the pretreated tail gas into an acidifying pool filled with a composition solution of acetic acid and carbonic acid for acidifying;
s3, alkalization, namely introducing the acidified tail gas into alkalization equipment filled with a composition solution of aluminum hydroxide and copper hydroxide for alkalization;
s4, plasma separation, namely introducing the tail gas subjected to alkalization treatment into an electrolysis device, and separating active ions of organic matters in the waste gas by using high-voltage pulse corona discharge;
s5, thermal oxidation treatment, namely introducing the separated tail gas into a thermal oxidation reactor, and gradually raising the temperature to 250 ℃ so as to oxidize the residual organic matter active ions in the tail gas to generate carbon dioxide and water;
s6, condensing the volatile organic compounds in the hot tail gas after condensation and thermal oxidation treatment to generate condensation when encountering cold mixed liquid;
s7, degradation treatment, namely, the condensed gas is converted and degraded by using high-concentration and high-activity desulfurization bacteria;
and S8, discharging the clean tail gas subjected to degradation treatment into the outside air.
Example 2
The invention provides an environment-friendly method for removing factory VOC, which comprises the following steps:
s1, preprocessing, namely introducing the factory tail gas into preprocessing equipment for spraying processing, then utilizing zeolite for adsorption processing, filtering the processed product through an activated carbon net to finish preprocessing the waste gas, and removing the organic waste gas which has large granularity and can be precipitated in the organic waste gas;
s2, acidifying, namely introducing the pretreated tail gas into an acidifying pool filled with a composition solution of carbonic acid and nitrous acid for acidifying;
s3, alkalization, namely introducing the acidified tail gas into alkalization equipment filled with a composition solution of copper hydroxide and ferric hydroxide for alkalization;
s4, plasma separation, namely introducing the tail gas subjected to alkalization treatment into an electrolysis device, and separating active ions of organic matters in the waste gas by using high-voltage pulse corona discharge;
s5, thermal oxidation treatment, namely introducing the separated tail gas into a thermal oxidation reactor, and gradually raising the temperature to 325 ℃, so that the residual organic matter active ions in the tail gas are oxidized to generate carbon dioxide and water;
s6, condensing the volatile organic compounds in the hot tail gas after condensation and thermal oxidation treatment to generate condensation when encountering cold mixed liquid;
s7, degradation treatment, namely, converting and degrading the condensed gas by using any one or more compositions of high-concentration and high-activity hydrocarbon-removing bacteria;
and S8, discharging the clean tail gas subjected to degradation treatment into the outside air.
Example 3
The invention provides an environment-friendly method for removing factory VOC, which comprises the following steps:
s1, preprocessing, namely introducing the factory tail gas into preprocessing equipment for spraying processing, then utilizing zeolite for adsorption processing, filtering the processed product through an activated carbon net to finish preprocessing the waste gas, and removing the organic waste gas which has large granularity and can be precipitated in the organic waste gas;
s2, acidifying, namely introducing the pretreated tail gas into an acidifying pool filled with a composition solution of carbonic acid, nitrous acid and hydrosulfuric acid for acidifying;
s3, alkalization, namely introducing the acidified tail gas into alkalization equipment filled with a composition solution of copper hydroxide, ferric hydroxide and zinc hydroxide for alkalization;
s4, plasma separation, namely introducing the tail gas subjected to alkalization treatment into an electrolysis device, and separating active ions of organic matters in the waste gas by using high-voltage pulse corona discharge;
s5, thermal oxidation treatment, namely introducing the separated tail gas into a thermal oxidation reactor, and gradually raising the temperature to 400 ℃ so that the residual organic matter active ions in the tail gas are oxidized to generate carbon dioxide and water;
s6, condensing the volatile organic compounds in the hot tail gas after condensation and thermal oxidation treatment to generate condensation when encountering cold mixed liquid;
s7, degradation treatment, namely, converting and degrading the condensed gas by using a composition of high-concentration and high-activity desulfurization bacteria and deamination bacteria;
and S8, discharging the clean tail gas subjected to degradation treatment into the outside air.
The invention can effectively remove VOC in factories, is energy-saving and environment-friendly, has no secondary pollution and high purification efficiency, can basically enable waste gas to reach harmless standards, is suitable for factories, and is beneficial to promoting the discharge improvement of VOC in factories.
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 (8)

1. An environment-friendly method for removing factory VOC is characterized by comprising the following steps:
s1, pretreatment, namely introducing the factory tail gas into pretreatment equipment for pretreatment;
s2, acidifying, namely introducing the pretreated tail gas into an acidifying pool to carry out acidifying;
s3, alkalization, namely introducing the acidified tail gas into alkalization equipment for alkalization;
s4, plasma separation, namely introducing the tail gas subjected to alkalization treatment into an electrolysis device, and separating active ions of organic matters in the waste gas by using high-voltage pulse corona discharge;
s5, thermal oxidation treatment, namely introducing the separated tail gas into a thermal oxidation reactor, and gradually raising the temperature to oxidize the residual organic matter active ions in the tail gas to generate carbon dioxide and water;
s6, condensing the volatile organic compounds in the hot tail gas after condensation and thermal oxidation treatment to generate condensation when encountering cold mixed liquid;
s7, degradation treatment, namely, the condensed gas is converted and degraded by using high-concentration and high-activity oxidizing microorganisms;
and S8, discharging the clean tail gas subjected to degradation treatment into the outside air.
2. The method for environmentally removing factory VOCs according to claim 1, wherein the pretreatment in S1 comprises a spraying treatment, an adsorption treatment and a filtering treatment.
3. The method for environmentally removing factory VOCs as claimed in claim 2, wherein said adsorption treatment uses zeolite to adsorb organic materials in the exhaust gas.
4. The method for removing factory VOCs in an environment-friendly manner as claimed in claim 2, wherein the filtration treatment is a filtration treatment using porous activated carbon for filtering out a part of large-particle harmful substances and adsorbing a part of harmful gases in the exhaust gas.
5. The method for environmentally removing factory VOCs according to claim 1, wherein the acid for acidification in S2 is one or more of acetic acid, carbonic acid, nitrous acid, and hydrogen sulfuric acid.
6. The method for environmentally removing factory VOCs according to claim 1, wherein the alkalinizing alkali in S3 is any one or more of aluminum hydroxide, copper hydroxide, iron hydroxide or zinc hydroxide.
7. The method for removing factory VOCs in an environmentally friendly manner as recited in claim 1, wherein the heating temperature of the thermal oxidation treatment in S5 is 250-400 ℃.
8. The method for environmentally removing factory VOCs according to claim 1, wherein in S7, the oxidizing microorganism is any one or more of a desulfurization bacterium, a hydrocarbon-removing bacterium or a deamination bacterium.
CN202010428577.8A 2020-05-20 2020-05-20 Environment-friendly method for removing VOC (volatile organic compounds) in factory Pending CN111729505A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206424763U (en) * 2016-12-14 2017-08-22 郑州大学 A kind of exhaust-gas efficient purifier for Painting Shop
CN107252606A (en) * 2017-07-03 2017-10-17 安徽国能亿盛环保科技有限公司 A kind of industrial waste gas handling process
CN109985505A (en) * 2019-04-26 2019-07-09 国药集团重庆医药设计院有限公司 A kind of traditional Chinese medicine plaster production waste gas treatment process
CN110711485A (en) * 2019-09-30 2020-01-21 广州紫科环保科技股份有限公司 Waste gas purification device for sewage treatment station of sterile raw material medicine production line
KR20200043780A (en) * 2018-10-18 2020-04-28 동명대학교산학협력단 A gas purifier with self-purifying function
CN111167288A (en) * 2020-02-26 2020-05-19 大连广泰源环保科技有限公司 Treatment process and treatment system for high-concentration stink waste gas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206424763U (en) * 2016-12-14 2017-08-22 郑州大学 A kind of exhaust-gas efficient purifier for Painting Shop
CN107252606A (en) * 2017-07-03 2017-10-17 安徽国能亿盛环保科技有限公司 A kind of industrial waste gas handling process
KR20200043780A (en) * 2018-10-18 2020-04-28 동명대학교산학협력단 A gas purifier with self-purifying function
CN109985505A (en) * 2019-04-26 2019-07-09 国药集团重庆医药设计院有限公司 A kind of traditional Chinese medicine plaster production waste gas treatment process
CN110711485A (en) * 2019-09-30 2020-01-21 广州紫科环保科技股份有限公司 Waste gas purification device for sewage treatment station of sterile raw material medicine production line
CN111167288A (en) * 2020-02-26 2020-05-19 大连广泰源环保科技有限公司 Treatment process and treatment system for high-concentration stink waste gas

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