CN112107949A - Waste gas centralized treatment system for industrial gathering area - Google Patents
Waste gas centralized treatment system for industrial gathering area Download PDFInfo
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- CN112107949A CN112107949A CN201910543530.3A CN201910543530A CN112107949A CN 112107949 A CN112107949 A CN 112107949A CN 201910543530 A CN201910543530 A CN 201910543530A CN 112107949 A CN112107949 A CN 112107949A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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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
- B01D53/002—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
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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
- B01D53/04—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 stationary adsorbents
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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
- B01D53/14—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
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- B01D53/22—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 diffusion
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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
- B01D53/34—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
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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
- B01D53/34—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
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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
- B01D53/34—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
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- 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
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- 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
Abstract
The invention discloses a waste gas centralized treatment system, which belongs to the technology of atmospheric pollution control, and comprises a waste gas collection system, a waste gas centralized conveying system and a waste gas centralized treatment system, wherein the waste gas centralized treatment system is mainly applied to the atmospheric pollution treatment of industrial concentration areas, waste gas of various factories (enterprises) is collected through the waste gas collection system and then is conveyed to a waste gas centralized treatment center through the centralized conveying system for treatment, the pattern of enterprise decentralized treatment in the current waste gas treatment is broken, the waste gas centralized treatment of the industrial concentration areas is realized, the zero emission of main pollutants in one area can be basically realized, and the problem of atmospheric pollution in one area and even the whole country is fundamentally solved.
Description
Technical Field
An air pollution control technology.
Background
According to the physical state of pollutant in the atmosphere, can be divided into two main types of particle pollutant and gaseous pollutant, and particle pollutant purification process is the separation of aerosol two-phase, can realize through the dust removal technique, and present dust removal technical equipment has: mechanical dust collectors, wet dust collectors, bag type dust collectors, electrostatic bag composite dust collectors, and the like; the gaseous pollutant and the carrier gas are dispersed homogeneously, and the gaseous pollutant and the carrier gas are purified and eliminated through absorption, adsorption, catalysis, combustion, condensation, membrane separation, biological purification and other process. In recent years, the ministry of environmental protection successively releases a series of air pollution control specifications, such as general technical specification of bag type dust removal engineering (HJ 2020-2012) and technical specification of dust removal engineering of cement industry (HJ 434-2008), as technical bases for industry development.
There are problems and limitations: at present, the main source of air pollution in China is productive pollution, most areas adopt an industrial aggregation form to carry out centralized management on factory enterprises so as to carry out centralized treatment on pollutants such as waste water, waste residues and the like, but at present, the exhaust emission of the enterprises is mainly treated by the enterprises respectively, the centralized treatment is not realized, even if each enterprise is discharged according to the current discharge standard and reaches the standard, the total amount discharged by the whole aggregation area is still considerable under the influence of the environmental bearing capacity, and the method is still a decisive factor for the quality of local air. In addition, the method does not exclude that the social responsibility of part of enterprises is not strong, avoids environmental protection supervision, has the phenomena of overproof emission and even stealing emission, and causes the air pollution of one area to be aggravated.
Disclosure of Invention
Aiming at the problems in atmospheric pollution treatment, a new technical solution is adopted, waste gas of enterprises is changed from decentralized treatment into centralized treatment, a waste gas centralized treatment center (factory) in an industrial gathering area is built, waste gas of each factory (enterprise) is collected through a waste gas collecting system and then is conveyed to the waste gas centralized treatment center through a centralized conveying system for treatment, the existing waste gas treatment technology is comprehensively utilized and integrated, and the purpose that only one chimney, namely 'one area and one chimney', is arranged in the industrial gathering area is achieved. The zero emission of main pollutants in one region can be basically realized, so that the problem of atmospheric pollution in one region and even nationwide is fundamentally solved.
The technical scheme is as follows: three subsystems (figure 1) which are connected in sequence are built, namely an exhaust gas collecting system, an exhaust gas centralized conveying system (C) and an exhaust gas centralized processing system (D). The first step, lay the pipe network of conveying of waste gas concentration through the method of building the sewage bypass, but this scheme greatly reduced waste gas centralized treatment pipe network lays the cost. And secondly, realizing 'one chimney in one factory', namely realizing that only one chimney is arranged in one factory or enterprise, and carrying out standard treatment on organized emission and unorganized emission waste gas in the factory by a waste gas treatment unit in the factory and then conveying the treated waste gas to the chimney meeting the requirement of the chimney emission height in a positive pressure manner. And after being collected by a waste gas collecting system arranged at the top of the chimney, the waste gas is conveyed into a centralized processing pipe network constructed in the first step, and finally conveyed to a waste gas centralized processing center constructed in the third step for further processing. And thirdly, building a waste gas centralized treatment center beside or in a sewage treatment plant or at an alternative site of an industrial gathering area, integrating the existing dust removal and waste gas purification treatment technologies, treating the granular pollutants by comprehensive devices such as a mechanical dust collector, a wet dust collector, a bag type dust collector, an electrostatic dust collector, an electric bag composite dust collector and the like, and treating the gaseous pollutants by methods such as an absorption method, an adsorption method, a catalysis method, a combustion method, a condensation method, a membrane separation method, a biological purification method and the like, so that the recycling of resources is realized to the maximum extent, and finally, the zero emission of waste gas is realized.
Drawings
FIG. 1: a layout of a central plane for centralized waste gas treatment;
the following are marked in the figure: f. of1-plant 1, f2-plant 2, f3-plant 3, f4-plant 4, fn-plant n, C-flue gas central delivery system, D-flue gas central treatment system.
FIG. 2: an exhaust gas collection system;
the following are marked in the figure: 1-chimney sealing cover (can be opened and closed), 2-perforated plate (can be opened and closed); 3-an exhaust fan; 4-an exhaust check valve; 5-an exhaust gas delivery conduit; 6-waste gas buffer pool; 7-waste gas centralized conveying pipe network.
FIG. 3: an exhaust gas delivery system;
the following are marked in the figure: 8-an enterprise (factory) waste gas conveying pipeline, 9-a waste gas centralized conveying pipeline, 10-a waste gas centralized processing center and 11-a waste gas centralized conveying pipeline (2).
FIG. 4: a waste gas centralized treatment system;
labeled as: k1Mechanical dust collectors, K2Wet dust collector, K3Bag house dust collector, K4-electrostatic precipitators, K5-electrostatic and bag combined dust collector, Q1Absorption method, Q2Adsorption method, Q3Catalytic process, Q4Combustion process, Q5By condensation method, Q6Membrane separation, Q7 biological purification.
Detailed Description
The implementation mode is illustrated by taking an industrial gathering area in a certain market in the middle as an example, more than 100 enterprises such as power plants, coking plants, ceramic plants, valve plants, steel plants, casting plants and the like are distributed in the gathering area, most of the enterprises can discharge the pollutants up to the standard according to the current environmental protection standard, and the pollutants discharged into the atmosphere are as follows: particulate pollutants such as dust and smoke, gaseous pollutants such as SO2, CO, VOCS, etc., are perceived by the masses as smelling peculiar smells in the accumulation area, and objects placed outdoors have a layer of dust after a period of time. The industrial emission of the gathering area is still a main source of atmospheric pollutants in one area, and after the waste gas centralized treatment system to be built is operated, the zero emission of waste gas can be basically realized, and the operation steps are as follows: firstly, each enterprise (factory) in the gathering area is subjected to concentrated waste gas collection and transformation to realize 'one factory and one chimney', organized discharge is firstly subjected to primary treatment by environmental protection facilities in the enterprise, or reaches the standard, or can be discharged into a chimney meeting the requirement of environmental protection height, an unorganized discharge unit is subjected to sealed transformation as much as possible, unorganized discharge gas is also discharged into the chimney, a hemispherical gas collecting hood (1) is additionally arranged at the top of the chimney, the gas collecting hood is specially designed and can be opened and closed in a rotating mode, a porous plate is arranged below the gas collecting hood, holes are square or circular, the effect is that waste gas is collected more uniformly, a centrifugal exhaust fan is arranged above the porous plate and below the gas collecting hood, the power of the fan is matched according to the conventional waste gas discharge flow of the enterprise, and waste gas extracted by the exhaust fan enters a waste gas buffer pool (5) downwards through a pipeline arranged inside or outside the chimney, the waste gas buffer pool is a closed storage tank, an inlet and an outlet, and can be poured by concrete or a metal storage tank, so that the waste gas at the outlet can be stably output, and the liquid in the waste gas can be filtered. This collection system's still characterized in that, with normally discharging the compatibility, when waste gas centralized processing center (D) normally operates promptly, the chimney top cover body is in the encapsulated situation, the air exhauster work, enterprise (mill) waste gas is handled through waste gas centralized processing center, no longer to discharging the pollutant in the atmosphere, when waste gas centralized processing center can not normally operate, the chimney top cover body is in the open mode, and the enterprise waste gas up to standard still accessible this chimney discharges.
And a second step of building a waste gas centralized conveying pipe network in the gathering area can be built by a method of building a sewage bypass, namely, the waste gas centralized conveying pipe network is the same with a sewage pipeline and can also be independently laid, and waste gas collected by a single enterprise is discharged into a waste gas centralized conveying pipe network (C) through an outlet of a waste gas buffer pool.
And thirdly, arranging a waste gas centralized treatment center beside or in a sewage treatment plant in an industrial gathering area, integrating the existing dust removal and waste gas purification treatment technologies, treating the particle pollutants by comprehensive devices such as a mechanical dust collector, a wet dust collector, a bag type dust collector, an electrostatic dust collector, an electric bag composite dust collector and the like, and treating the gaseous pollutants by methods such as an absorption method, an adsorption method, a catalysis method, a combustion method, a condensation method, a membrane separation method, a biological purification method and the like, so that the recycling of resources is realized to the maximum extent, and finally, the zero emission of waste gas is realized.
Claims (6)
1. The utility model provides an industry gathers district's waste gas centralized processing system, its characterized in that carries out whole district's centralized processing to the waste gas after industry gathers district's enterprise through preliminary treatment, and the relative concentrated region of factory or enterprise is known as industry and gathers the district, and the system includes three subsystems (fig. 1) that connect gradually, promptly waste gas collecting system, waste gas centralized transportation system (C), waste gas centralized processing system (D).
2. The exhaust gas collection system of claim 1, wherein: the waste gas collecting device is arranged at the top of the only chimney meeting the emission height requirement of an enterprise factory, the topmost end of the chimney is provided with a hemispherical cover body (1), the cover body can be opened and closed through rotation, an air draft equipment platform (3) is arranged below the cover body, a controllable opening and closing circular perforated plate (2) is arranged under the platform, the effect is that the airflow is more uniform, the standard or unqualified waste gas of the enterprise is pumped out through the air draft equipment and then is conveyed to a waste gas buffer pool (6) through a waste gas conveying pipeline (5), a waste gas check valve (4) is respectively arranged at the upstream and the downstream of the waste gas buffer pool and is used for preventing waste gas backflow, the gas discharged from the waste gas buffer pool is conveyed to a waste gas centralized conveying system (C) and then is treated at a waste gas centralized treatment center (D), the collecting system is further characterized by being compatible with normal emission, namely when the waste gas centralized, the chimney top cover body is in the enclosed state, and the air exhauster work, enterprise (mill) waste gas are handled through waste gas centralized processing center, no longer to discharging the pollutant in the atmosphere, when waste gas centralized processing center can not normally operate, the chimney top cover body is in the open mode, and the up-to-standard waste gas of enterprise can still normally discharge through the chimney, does not influence the enterprise operation.
3. The exhaust gas collective transfer system according to claim 1, characterized in that: the waste gas treatment system comprises two modes, one mode is that a common waste gas conveying pipeline is laid, waste gas of each enterprise (factory) is collected by a waste gas collecting system and then is respectively discharged into the common waste gas conveying pipeline and further conveyed to a waste gas centralized treatment center, and the other mode is that a waste gas conveying pipeline is laid by each enterprise (factory) and finally is collected and treated in the waste gas treatment center.
4. The exhaust gas centralized treatment system according to claim 1, characterized in that: the method is an integration of the existing dust removal and purification treatment technology and comprises two steps, wherein particle pollutants are treated firstly, and then the gaseous pollutants are treated, namely, a mechanical dust collector (K1), a wet dust collector (K2), a bag type dust collector (K3), an electrostatic dust collector (K4), an electric bag composite dust collector (K5) and the like are combined in series or in parallel, a proper dust removal path is intelligently selected through detection of a pollutant sensor, the particle pollutants are removed, and then the gaseous pollutants are treated through combination of methods such as an absorption method (Q1), an adsorption method (Q2), a catalysis method (Q3), a combustion method (Q4), a condensation method (Q5), a membrane separation method (Q6), a biological purification method (Q7) and the like.
5. The hemispherical cover body (1) at the top of the chimney is characterized in that the size of the hemispherical cover body is determined according to the size of the chimney, the spherical surface is divided into 4, 6, 8, 10 and 2n equal parts through the meridian line, an inner layer and an outer layer are arranged, and the opening and the closing are controlled through rotation.
6. The exhaust buffer reservoir of claim 2, which is a cavity having a volume, an inlet, an outlet, and an exhaust check valve at each of the inlet and outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910543530.3A CN112107949A (en) | 2019-06-21 | 2019-06-21 | Waste gas centralized treatment system for industrial gathering area |
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| CN201910543530.3A CN112107949A (en) | 2019-06-21 | 2019-06-21 | Waste gas centralized treatment system for industrial gathering area |
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| CN112107949A true CN112107949A (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113350896A (en) * | 2021-05-06 | 2021-09-07 | 郭战海 | Waste gas detection processing apparatus for thermal power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372886A (en) * | 2008-07-29 | 2009-02-25 | 李瑞峰 | Environment-protective and efficient heating stove system for oilfield |
| CN203736992U (en) * | 2014-03-03 | 2014-07-30 | 武汉理工大学 | Domestic smoke gas centralized treatment and emission device for residential building |
| CN105413408A (en) * | 2015-12-28 | 2016-03-23 | 刘永江 | System and method of waste gas concentrated recycling treatment for reducing air pollution |
| CN206285661U (en) * | 2016-12-16 | 2017-06-30 | 华润利尔（青岛）环保技术有限公司 | A kind of house exhaust purifier |
-
2019
- 2019-06-21 CN CN201910543530.3A patent/CN112107949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372886A (en) * | 2008-07-29 | 2009-02-25 | 李瑞峰 | Environment-protective and efficient heating stove system for oilfield |
| CN203736992U (en) * | 2014-03-03 | 2014-07-30 | 武汉理工大学 | Domestic smoke gas centralized treatment and emission device for residential building |
| CN105413408A (en) * | 2015-12-28 | 2016-03-23 | 刘永江 | System and method of waste gas concentrated recycling treatment for reducing air pollution |
| CN206285661U (en) * | 2016-12-16 | 2017-06-30 | 华润利尔（青岛）环保技术有限公司 | A kind of house exhaust purifier |
Non-Patent Citations (1)
| Title |
|---|
| 陈广洲等: "《环境影响评价》", 31 August 2015 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113350896A (en) * | 2021-05-06 | 2021-09-07 | 郭战海 | Waste gas detection processing apparatus for thermal power plant |
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Application publication date: 20201222 |