CN106669359B - Combined moving bed adsorption device - Google Patents
Combined moving bed adsorption device Download PDFInfo
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- CN106669359B CN106669359B CN201710107078.7A CN201710107078A CN106669359B CN 106669359 B CN106669359 B CN 106669359B CN 201710107078 A CN201710107078 A CN 201710107078A CN 106669359 B CN106669359 B CN 106669359B
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- moving bed
- active coke
- flue gas
- main body
- bed main
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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
- B01D53/08—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 according to the "moving bed" method
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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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
Abstract
The invention discloses a combined moving bed adsorption device, which comprises a moving bed main body, wherein the upper end of the moving bed main body is an active coke inlet, and the lower end of the moving bed main body is an active coke outlet, and the combined moving bed adsorption device is characterized in that: a plurality of isolation sieve plates are arranged in the moving bed main body along the direction from the active coke inlet to the active coke outlet, and the isolation sieve plates divide the moving bed main body into a plurality of active coke bins; the upper part of the moving bed main body is provided with a flue gas outlet, the lower part of the moving bed main body is provided with a flue gas inlet, the flue gas inlet adopts a gradually expanding structure and is provided with a shutter, and the flue gas outlet adopts a microporous plate structure. The moving bed adsorption device provided by the invention has the cross-flow and convection adsorption effects, overcomes the defects of cross-flow and convection equipment in the prior art, can improve the contact adsorption time of flue gas and active coke in the adsorption tower, can reduce the flue gas entrance resistance, and improves the purification efficiency.
Description
Technical Field
The invention belongs to the technical field of environmental protection, relates to a flue gas pollutant control technology by an active coke dry method, and particularly relates to a combined moving bed adsorption device which has cross flow and convection adsorption effects, is suitable for treating flue gas containing various pollutants simultaneously, and realizes integrated purification of various pollutants such as sulfur, nitre, dioxin, mercury, dust and the like.
Background
The active coke dry method flue gas pollutant control technology can realize the integration of desulfurization, denitrification, demercuration and dust removal and can also remove SO 3 And white smoke is eliminated. The technology baseThe method does not consume water, saves a large amount of water resources, and the desulfurization byproduct is high-concentration SO 2 The method is convenient for resource utilization, and is a new generation of flue gas pollutant control technology with obvious advantages. Has great application prospect in a plurality of fields such as steel, metallurgy, electric power, waste incineration and the like.
The main process of removing the smoke pollutants by the active coke dry method is to discharge the smoke after reaching the standard after the smoke is adsorbed and purified by an active coke adsorption device, and the main process comprises three parts, namely an adsorption reaction tower system for removing harmful substances, a regeneration tower system for regenerating active coke, and an active coke conveyor system for circularly moving the active coke between the adsorption reaction tower and the regeneration tower. A booster fan is needed in the process, the flue gas to be treated is sent to an active coke moving layer for purification after being boosted, and the high-concentration sulfur dioxide gas separated during the regeneration of the active coke enters a byproduct recovery process device and is recovered into valuable byproducts such as sulfuric acid or gypsum.
The key factor of the flue gas pollutant removal technology by an active coke dry method is the adsorption capacity of adsorption reaction, and the adsorption capacity depends on the adsorption performance of adsorbent active coke, the one-time coke loading amount of an adsorption device, the residence time of the active coke in an adsorption tower, the contact adsorption time of the flue gas to be purified and the active coke, and the like.
Fig. 1 and 2 show the relationship between the active coke and the flow direction of flue gas in the prior art. In FIG. 1, the flue gas passes through the activated coke from the side of the moving direction of the activated coke, and the cross flow is realized; in fig. 2, the flue gas passes through the activated coke from the opposite side of the direction of movement of the activated coke, which is convection. Both cross-flow and convection have their own disadvantages: (1) in the cross flow equipment, the contact time of the flue gas and the active coke is short, and the adsorption efficiency is low; (2) in the convection device, the flue gas entry resistance is large.
Disclosure of Invention
The invention aims to provide a combined moving bed adsorption device which has cross flow and convection adsorption effects so as to improve the contact adsorption time of flue gas and active coke in an adsorption tower, reduce the resistance of flue gas entering and improve the purification efficiency.
The above purpose is realized by the following technical scheme:
a combined moving bed adsorption device comprises a moving bed main body, wherein the upper end of the moving bed main body is an active coke inlet, the lower end of the moving bed main body is an active coke outlet, a plurality of isolation sieve plates are arranged in the moving bed main body along the direction from the active coke inlet to the active coke outlet, and the isolation sieve plates divide the moving bed main body into a plurality of active coke bins; the upper part of the moving bed main body is provided with a flue gas outlet, the lower part of the moving bed main body is provided with a flue gas inlet, the flue gas inlet adopts a gradually expanding structure and is provided with a shutter, and the flue gas outlet adopts a microporous plate structure.
Further, the moving bed main body is a cuboid.
Furthermore, three active coke bins which are mutually separated by an isolation sieve plate are arranged in the moving bed main body, the main active coke bin is arranged in the middle, the side active coke bins are arranged at two sides, and the shutter structure and the microporous plate structure are arranged on the outer walls of the side active coke bins.
Furthermore, the divergent structure is divergent from the active coke outlet to the active coke inlet. The structural characteristics are matched with the shutter structure to help the flow diffusion of the flue gas after entering the moving bed adsorption device, the contact time of the flue gas and the active coke is increased, and meanwhile, the adsorbent active coke in the moving bed is not easy to leak from a flue gas inlet.
Further, the moving bed main body is divided into a flue gas outlet section, a flue gas adsorption section and a flue gas inlet section from top to bottom in sequence.
Further, the width of the flue gas outlet section is smaller than that of the flue gas adsorption section. Like this, form the buffer space that is used for reducing the flue gas discharge resistance after the purification outside the micropore board, this buffer space still is convenient for be connected with the exhaust pipe who locates the exhanst gas outlet department.
The invention has the beneficial effects that:
1. the moving bed adsorption device provided by the invention is internally provided with a plurality of active coke bins which are mutually separated by an isolation sieve plate, each active coke bin adopts an independent feeder to discharge materials, the feeder is controlled by frequency conversion, the speed is adjustable, and each active coke bin can respectively set the residence time of active coke and can set the optimal residence time according to the smoke condition;
2. the moving bed adsorption device provided by the invention has the cross-flow and convection adsorption effects, overcomes the defects of cross-flow and convection equipment in the prior art, can improve the contact adsorption time of flue gas and active coke in the adsorption tower, can reduce the flue gas entrance resistance, and improves the purification efficiency.
Drawings
Fig. 1 is a schematic view of a cross-flow device in the prior art (wherein a is an active coke inlet, B is an active coke outlet, C is a flue gas inlet, and D is a flue gas outlet);
FIG. 2 is a schematic view of a convection apparatus of the prior art (where E is an active coke inlet or flue gas outlet and F is an active coke outlet or flue gas inlet);
FIG. 3 is a schematic diagram of the device of the invention (wherein, 1, an active coke inlet, 2, an active coke outlet, 3, a flue gas inlet section, 4, a flue gas outlet section, 5, a flue gas adsorption section, 6, a main active coke bin, 7, a side active coke bin, 8, a shutter-shaped flue gas inlet, 9, a micropore plate, 10, an isolation sieve plate, 11 and a buffer space).
Detailed Description
The technical scheme of the invention is specifically described below by combining the attached drawings.
A combined moving bed adsorption device as shown in fig. 3, which comprises a moving bed main body, wherein one end of the moving bed main body is an active coke inlet 1, the other end of the moving bed main body is an active coke outlet 2, three active coke bins which are mutually separated by an isolation sieve plate 10 are arranged in the moving bed main body, the isolation sieve plate 10 is perpendicular to the active coke inlet 1 and the active coke outlet 2, the middle is a main active coke bin 6, two sides are side active coke bins 7, and the flue gas inlet 1 and the flue gas outlet 2 are arranged at the outer sides of the side active coke bins 7; a flue gas inlet section 3 is arranged near an active coke outlet of the moving bed main body, a flue gas outlet section 4 is arranged near an active coke inlet, a flue gas adsorption section 5 is arranged between the flue gas inlet section and the flue gas outlet section, a flue gas inlet 8 is arranged on the side surface of the flue gas inlet section, and the flue gas inlet is of a gradually expanding structure and is provided with a shutter; the outside of exhanst gas outlet section is equipped with the micropore board 9 structure that supplies flue gas exhaust, simultaneously because 4 width of exhanst gas outlet section are less than flue gas adsorption section 5, and the micropore board 9 outside forms the buffer space 11 that is used for reducing the flue gas discharge resistance after purifying, still is convenient for and locates the smoke exhaust pipe connection of exhanst gas outlet department. The flue gas inlet adopts a gradually-expanding structure and is matched with the shutter, so that the flow diffusion of the flue gas after the flue gas enters the moving bed adsorption device is facilitated, and the contact time with the active coke is prolonged.
In one embodiment, the moving bed body is a rectangular parallelepiped (10m × 3m × 23 m).
The moving bed adsorption device provided by the invention is internally provided with three active coke bins which are mutually separated by an isolation sieve plate, each active coke bin adopts an independent feeder to discharge materials, the feeders are controlled by frequency conversion, the speed is adjustable, and the active coke bins can be respectively set with the residence time of active coke and can be set with the optimal residence time according to the smoke conditions. The moving bed adsorption device provided by the invention has the cross-flow and convection adsorption effects, overcomes the defects of cross-flow and convection equipment in the prior art, can improve the contact adsorption time of flue gas and active coke in the adsorption tower, can reduce the flue gas entrance resistance, and improves the purification efficiency.
The above-described embodiments are merely illustrative of the material of the present invention, and do not limit the scope of the present invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the true spirit and scope of the invention.
Claims (4)
1. The utility model provides a modular remove bed adsorption equipment, is the active coke entry including removing the bed main part, removes the upper end of bed main part, and the lower extreme is the active coke export, its characterized in that: a plurality of isolation sieve plates are arranged in the moving bed main body along the direction from the active coke inlet to the active coke outlet, and the isolation sieve plates divide the moving bed main body into a plurality of active coke bins; the upper part of the moving bed main body is provided with a flue gas outlet, the lower part of the moving bed main body is provided with a flue gas inlet, the flue gas inlet adopts a gradually expanding structure and is provided with a shutter, and the flue gas outlet adopts a microporous plate structure; three active coke bins which are mutually separated by an isolation sieve plate are arranged in the main body of the moving bed, the middle part of the main active coke bin is a main active coke bin, two sides of the main active coke bin are side active coke bins, and a shutter structure and a microporous plate structure are arranged on the outer walls of the side active coke bins; the divergent structure is divergent from the active coke outlet to the active coke inlet.
2. A combined moving bed adsorption unit according to claim 1, wherein: the moving bed main body is sequentially divided into a flue gas outlet section, a flue gas adsorption section and a flue gas inlet section from top to bottom.
3. A combined moving bed adsorption unit according to claim 2, wherein: the width of the flue gas outlet section is smaller than that of the flue gas adsorption section.
4. A combined moving bed adsorption unit according to claim 3, wherein: the main body of the moving bed is a cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107078.7A CN106669359B (en) | 2017-02-27 | 2017-02-27 | Combined moving bed adsorption device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107078.7A CN106669359B (en) | 2017-02-27 | 2017-02-27 | Combined moving bed adsorption device |
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| CN106669359A CN106669359A (en) | 2017-05-17 |
| CN106669359B true CN106669359B (en) | 2022-08-02 |
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| CN201710107078.7A Active CN106669359B (en) | 2017-02-27 | 2017-02-27 | Combined moving bed adsorption device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109045994A (en) * | 2018-09-28 | 2018-12-21 | 国电环境保护研究院有限公司 | A kind of activated coke flue gas purification device and cool-down method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5527514A (en) * | 1993-11-18 | 1996-06-18 | Sumitomo Heavy Industries, Ltd. | Desulfurizing and denitrating tower |
| WO1996036420A1 (en) * | 1995-05-19 | 1996-11-21 | Steag Aktiengesellschaft | Process and apparatus for handling carbon-containing adsorbent |
| CN103230724A (en) * | 2013-04-22 | 2013-08-07 | 西安热工研究院有限公司 | New cross-convective flue gas purification absorption tower |
| CN206526647U (en) * | 2017-02-27 | 2017-09-29 | 国电科学技术研究院 | A kind of assembled moving bed adsorbent equipment |
-
2017
- 2017-02-27 CN CN201710107078.7A patent/CN106669359B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5527514A (en) * | 1993-11-18 | 1996-06-18 | Sumitomo Heavy Industries, Ltd. | Desulfurizing and denitrating tower |
| WO1996036420A1 (en) * | 1995-05-19 | 1996-11-21 | Steag Aktiengesellschaft | Process and apparatus for handling carbon-containing adsorbent |
| CN103230724A (en) * | 2013-04-22 | 2013-08-07 | 西安热工研究院有限公司 | New cross-convective flue gas purification absorption tower |
| CN206526647U (en) * | 2017-02-27 | 2017-09-29 | 国电科学技术研究院 | A kind of assembled moving bed adsorbent equipment |
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Address after: 210009 No. 1 Wenshu East Road, Qixia District, Nanjing, Jiangsu Province Applicant after: GUODIAN SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 210009 No. 1 Wenshu East Road, Qixia District, Nanjing, Jiangsu Province Applicant before: Guodian Science and Technology Research Institute |
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Address after: No. 1, Wenshu East Road, Qixia District, Nanjing, Jiangsu 210023 Patentee after: National Energy Group Science and Technology Research Institute Co.,Ltd. Address before: 210009 No.1 Wenshu East Road, Qixia District, Nanjing, Jiangsu Province Patentee before: GUODIAN SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |