CN113476977A - Combustible flue gas purification device and process - Google Patents
Combustible flue gas purification device and process Download PDFInfo
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- CN113476977A CN113476977A CN202110965331.9A CN202110965331A CN113476977A CN 113476977 A CN113476977 A CN 113476977A CN 202110965331 A CN202110965331 A CN 202110965331A CN 113476977 A CN113476977 A CN 113476977A
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- box body
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- proof cavity
- bin
- middle box
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- 238000000746 purification Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title description 9
- 230000008569 process Effects 0.000 title description 9
- 230000007704 transition Effects 0.000 claims abstract description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 70
- 239000000428 dust Substances 0.000 claims description 46
- 239000007789 gas Substances 0.000 claims description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims description 35
- 238000010926 purge Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a combustible flue gas purification device which comprises an upper box body, a middle box body, a pattern plate, an ash bin, a gate valve, a transition bin, a star-shaped discharger, a spiral conveyor and an ash bin, wherein the pattern plate is positioned between the upper box body and the middle box body, the pattern plate is provided with a filter bag in a hanging manner, the ash bin is positioned at the lower part of the middle box body, the gate valve is positioned between the ash bin and the transition bin, the star-shaped discharger is positioned at the lower part of the transition bin, the bottom of the star-shaped discharger is connected with the spiral conveyor, the ash bin is positioned at the outlet end of the spiral conveyor, and the outer layer of the upper box body, the outer layer of the middle box body and the outer layer of the ash bin are respectively provided with an explosion-proof cavity.
Description
Technical Field
The invention belongs to the technical field of gas purification, and particularly relates to a combustible flue gas purification device and a combustible flue gas purification process.
Background
Combustible flue gas is common flue gas among the industrial flue gas, if contain flammable explosive gases such as a large amount of hydrogen, carbon monoxide, methane in the flue gas, make the flue gas have combustible property, need get rid of impurity such as dust particulate matter that contains in the flue gas simultaneously, ordinary dust remover causes combustible gas to leak because there is certain leakage rate, or inside air leakage gets into the dust remover, causes the explosion risk. The welding of ordinary dust remover box piece department, dust remover top apron and dust remover ash bin all are important gas leakage point, because with outside UNICOM, the inside combustible gas of dust remover is very easily leaked during dust remover ash bin row ash, perhaps outside air easily leaks inside getting into the dust remover, has great potential safety hazard.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a combustible flue gas purification device and a combustible flue gas purification process, which can solve the problems of gas leakage in the process of splicing welding seams of a dust remover box body and in the process of top cover plate and dust discharging in the process of purifying combustible flue gas, and have the advantages of simple structure, convenient operation and the like.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a combustible flue gas purification device comprises an upper box body, a middle box body, a pattern plate, an ash bin, a gate valve, a transition bin, a star-shaped discharger, a spiral conveyor and an ash bin, wherein the pattern plate is positioned between the upper box body and the middle box body, a filter bag is hung on the pattern plate, the ash bin is positioned at the lower part of the middle box body, the gate valve is positioned between the ash bin and the transition bin, the star-shaped discharger is positioned at the lower part of the transition bin, the bottom of the star-shaped discharger is connected with the spiral conveyor, the ash bin is positioned at the outlet end of the spiral conveyor, an upper box body explosion-proof cavity is arranged on the outer layer of the upper box body, the upper box body explosion-proof cavity is separated from a cavity inside the upper box body by adopting a steel plate, a first nitrogen inlet and a first pressure sensor are arranged in the upper box body explosion-proof cavity, and a clean gas outlet is formed in one side of the upper box body;
a middle box body explosion-proof cavity is arranged outside the middle box body, a second nitrogen inlet is formed in one side of the middle box body explosion-proof cavity, a fixing device is arranged in the middle box body explosion-proof cavity, one side of the middle box body explosion-proof cavity is fixed to the outer wall of the middle box body, the other side of the middle box body explosion-proof cavity is fixed to the inner wall of the middle box body explosion-proof cavity, a second pressure sensor and a combustible gas sensor are arranged in the middle box body explosion-proof cavity, and a third pressure sensor is arranged in the middle box body;
an ash bin explosion-proof cavity is arranged on the outer layer of the ash bin, a third nitrogen inlet is arranged on one side of the ash bin explosion-proof cavity, a combustible gas inlet is arranged in the middle of the ash bin, a purge gas inlet and a loading level sensor are arranged at the upper part of the ash bin explosion-proof cavity, and a loading level sensor is arranged at the lower part of the ash bin explosion-proof cavity;
the upper part of the transition bin is provided with an upper blowing port and a transition bin feeding level indicator, and the lower part of the transition bin is provided with a lower blowing port and a transition bin discharging level indicator.
Furthermore, the inner parts of the upper box body explosion-proof cavity, the middle box body explosion-proof cavity and the ash bin explosion-proof cavity are communicated with each other.
Furthermore, the number of the fixing devices is multiple, and the fixing devices are evenly distributed in the explosion-proof cavity of the middle box body.
Furthermore, the upper box body, the middle box body and the ash bin are fixedly connected through flanges.
Furthermore, the gate valve is a double-layer gate valve, and the driving mode of the gate valve is electric or pneumatic.
Furthermore, the outer parts of the upper box body explosion-proof cavity, the middle box body explosion-proof cavity and the ash bin explosion-proof cavity are provided with heat-insulating layers.
The process for purifying combustible flue gas by adopting the combustible flue gas purification device comprises the following steps:
step one, an explosion-proof cavity of an upward box body, an explosion-proof cavity of a middle box body and an explosion-proof cavity of an ash bin
Introducing nitrogen from a combustible gas inlet of the ash bin, purging nitrogen in the device, and discharging air in the device;
introducing combustible flue gas from a combustible gas inlet of the ash bin, purifying the flue gas under the action of a filter bag, introducing dust into the ash bin, and discharging clean flue gas from a clean gas outlet of the upper box body;
regulating the nitrogen pressure in the upper box body explosion-proof cavity, the middle box body explosion-proof cavity and the ash bin explosion-proof cavity to be always greater than the internal pressure of the middle box body and maintain;
step five, when the dust amount collected in the ash bin reaches a specified loading level, opening a gate valve, unloading the dust into a transition bin, and when the dust amount reaches a specified unloading level, closing the gate valve, and when the dust is bridged or hardened in the ash bin and is not easy to discharge, introducing nitrogen through a purge gas inlet for purging;
and step six, when the dust amount in the transition bin reaches a specified loading level, opening the star-shaped discharger 7 and the spiral conveyor, discharging and conveying the dust to the ash bin, when the dust in the transition bin reaches a specified unloading level, closing the star-shaped discharger and the spiral conveyor, and when bridging or hardening in the transition bin is difficult to discharge, introducing nitrogen for blowing through the upper blowing port and the lower blowing port.
Further, in the step one, the nitrogen pressure in the box explosion-proof chamber, the middle box explosion-proof chamber and the ash bin explosion-proof chamber is maintained at 1000-5000 Pa.
According to the combustible flue gas purification device, the middle box body, the ash bin and the gas purifying chamber which are easy to generate gas leakage in the purification device are respectively provided with the explosion-proof cavity, nitrogen is introduced into the explosion-proof cavity and certain pressure is kept, so that external air can be effectively prevented from leaking into the device, or combustible flue gas in the device can be effectively prevented from leaking outwards, the explosion-proof cavity is internally provided with the combustible gas sensor, whether combustible flue gas leaks into the explosion-proof cavity or not can be monitored at any time, the design of the transition bin at the lower part of the ash bin is realized, the interior of the device is not directly communicated with the outside during ash discharge, and the interior of the purification device is in an isolated state with the outside at any time through alternate opening of the gate valve and the star-shaped discharger, so that the gas leakage in the ash discharge process is effectively prevented. According to the combustible flue gas purification process disclosed by the invention, the air in the device is replaced by adopting nitrogen before the combustible flue gas is introduced into the purification device, and the combustible flue gas is introduced into the device after the nitrogen with a certain pressure is introduced into the explosion-proof cavity, so that gas leakage caused by unstable system when the purification process is just started can be prevented, and the whole device and process have the advantages of safety, explosion prevention, simplicity in operation and the like.
Drawings
Fig. 1 is a schematic structural diagram of a combustible flue gas purification device of the invention.
Wherein, 1-upper box body, 2-middle box body, 3-pattern plate, 4-ash bin, 5-gate valve, 6-transition bin, 7-star discharger, 8-screw conveyor, 9-ash bin, 101-upper box body explosion-proof cavity, 1011-first nitrogen inlet, 1012-first pressure sensor, 102-clean gas outlet, 201-middle box body explosion-proof cavity, 202-second nitrogen inlet, 203-fixing device, 204-second pressure sensor, 205-combustible gas sensor, 206-third pressure sensor, 301-filter bag, 401-ash bin explosion-proof cavity, 402-third nitrogen inlet, 403-combustible gas inlet, 405-purge gas inlet, 404-upper material level sensor, 405-purge gas inlet, 406-a feed level sensor, 601-an upper blowing port, 602-a lower blowing port, 603-a transition bin feed level meter and 604-a transition bin feed level meter.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and can be, for example, mechanically or electrically connected, or can be internal to two elements, directly connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.
The combustible flue gas purification device shown in fig. 1 comprises an upper box body 1, a middle box body 2, a pattern plate 3, a dust bin 4, a gate valve 5, a transition bin 6, a star-shaped discharger 7, a spiral conveyor 8 and a dust bin 9, wherein the pattern plate 3 is positioned between the upper box body 1 and the middle box body 2, a filter bag 301 is hung on the pattern plate 3, the dust bin is positioned at the lower part of the middle box body 2, the gate valve 5 is positioned between the dust bin 4 and the transition bin 6, the star-shaped discharger 7 is positioned at the lower part of the transition bin 6, the bottom of the star-shaped discharger 7 is connected with the spiral conveyor 8, the dust bin 9 is positioned at the outlet end of the spiral conveyor 8, the upper box body 1, the middle box body 2 and the dust bin 4 are fixedly connected through flanges, and the gate valve 5 is a double-layer gate valve and is driven in an electric or pneumatic mode; an upper box body explosion-proof cavity 101 is arranged on the outer layer of the upper box body 1, the upper box body explosion-proof cavity 101 is separated from a cavity inside the upper box body 1 by a steel plate, a first nitrogen inlet 1011 and a first pressure sensor 1012 are arranged on the upper box body explosion-proof cavity 101, and a clean gas outlet 102 is formed in one side of the upper box body 1; a middle box body explosion-proof cavity 201 is arranged outside the middle box body 2, a second nitrogen inlet 202 is formed in one side of the middle box body explosion-proof cavity 201, a fixing device 203 is arranged in the middle box body explosion-proof cavity 201, one side of the middle box body explosion-proof cavity is fixed with the outer wall of the middle box body 2, the other side of the middle box body explosion-proof cavity is fixed with the inner wall of the middle box body explosion-proof cavity 202, a second pressure sensor 204 and a combustible gas sensor 205 are arranged in the middle box body explosion-proof cavity 202, a third pressure sensor 206 is arranged in the middle box body 2, and the number of the fixing devices 203 is multiple and is evenly distributed in the middle box body explosion-proof cavity 201; an ash bin explosion-proof cavity 401 is arranged on the outer layer of the ash bin 4, a third nitrogen inlet 402 is arranged on one side of the ash bin explosion-proof cavity 401, a combustible gas inlet 403 is arranged in the middle of the ash bin 4, a purge gas inlet 405 and an upper material level sensor 404 are arranged on the upper portion of the ash bin explosion-proof cavity, a lower material level sensor 406 is arranged on the lower portion of the ash bin explosion-proof cavity, the inner portions of the upper box explosion-proof cavity 101, the middle box explosion-proof cavity 201 and the ash bin explosion-proof cavity 401 are mutually communicated, and heat insulation layers are arranged outside the upper box explosion-proof cavity 101, the middle box explosion-proof cavity 201 and the ash bin explosion-proof cavity 401; the upper part of the transition bin 6 is provided with an upper blowing port 601 and a transition bin upper level indicator 603, and the lower part is provided with a lower blowing port 602 and a transition bin lower level indicator 604.
The process for purifying combustible flue gas by adopting the combustible flue gas purification device comprises the following steps:
firstly, introducing nitrogen into the upper box body explosion-proof cavity 101, the middle box body explosion-proof cavity 201 and the ash bin explosion-proof cavity 401, and maintaining the pressure of the nitrogen in the middle box body explosion-proof cavity 101, the middle box body explosion-proof cavity 201 and the ash bin explosion-proof cavity 401 at 1000-5000 Pa;
introducing nitrogen from a combustible gas inlet 403 of the ash bin 4, purging nitrogen in the device, and discharging air in the device;
introducing combustible flue gas through a combustible gas inlet 403 of the ash bin 4, purifying the flue gas under the action of the filter bag 301, introducing dust into the ash bin 4, and discharging the clean flue gas from a clean gas outlet 102 of the upper box body 1;
regulating the nitrogen pressure in the upper box body explosion-proof cavity 101, the middle box body explosion-proof cavity 201 and the ash bin explosion-proof cavity 401 to be always greater than the internal pressure of the middle box body 2 and maintain the internal pressure;
step five, when the dust amount collected in the dust bin 4 reaches a specified loading level, opening the gate valve 5, discharging the dust into the transition bin 6, when the dust amount reaches a specified unloading level, closing the gate valve 5, and when the dust is bridged or hardened in the dust bin 4 and is not easy to discharge, introducing nitrogen through the purge gas inlet 405 for purging;
and step six, when the dust amount in the transition bin 6 reaches a specified loading level, opening the star-shaped discharger 7 and the spiral conveyor 8, discharging and conveying the dust to the ash bin 9, when the dust in the transition bin 6 reaches a specified unloading level, closing the star-shaped discharger 7 and the spiral conveyor 8, and when bridges or hardened materials in the transition bin 6 are not easy to discharge, introducing nitrogen for purging through the upper purging port 601 and the lower purging port 602.
In the description herein, references to the description of "one embodiment," "an example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The combustible flue gas purification device is characterized by comprising an upper box body (1), a middle box body (2), a pattern plate (3), an ash bin (4), a gate valve (5), a transition bin (6), a star-shaped discharger (7), a spiral conveyor (8) and an ash bin (9), wherein the pattern plate (3) is positioned between the upper box body (1) and the middle box body (2), a filter bag (301) is hung on the pattern plate (3), the ash bin is positioned at the lower part of the middle box body (2), the gate valve (5) is positioned between the ash bin (4) and the transition bin (6), the star-shaped discharger (7) is positioned at the lower part of the transition bin (6), the bottom of the star-shaped discharger (7) is connected with the spiral conveyor (8), the ash bin (9) is positioned at the outlet end of the spiral conveyor (8), an upper box body explosion-proof cavity (101) is arranged on the outer layer of the upper box body (1), and the upper box body explosion-proof cavity (101) is separated from a cavity inside the upper box body (1) by adopting a steel plate, the upper box body explosion-proof cavity (101) is provided with a first nitrogen inlet (1011) and a first pressure sensor (1012), and one side of the upper box body (1) is provided with a clean gas outlet (102);
a middle box body explosion-proof cavity (201) is arranged outside the middle box body (2), a second nitrogen inlet (202) is formed in one side of the middle box body explosion-proof cavity (201), a fixing device (203) is arranged in the middle box body explosion-proof cavity (201), one side of the middle box body explosion-proof cavity is fixed to the outer wall of the middle box body (2), the other side of the middle box body explosion-proof cavity is fixed to the inner wall of the middle box body explosion-proof cavity (202), a second pressure sensor (204) and a combustible gas sensor (205) are installed in the middle box body explosion-proof cavity (202), and a third pressure sensor (206) is installed inside the middle box body (2);
an ash bin explosion-proof cavity (401) is arranged on the outer layer of the ash bin (4), a third nitrogen inlet (402) is arranged on one side of the ash bin explosion-proof cavity (401), a combustible gas inlet (403) is arranged in the middle of the ash bin (4), a purge gas inlet (405) and a material loading level sensor (404) are arranged on the upper portion of the ash bin explosion-proof cavity, and a material unloading level sensor (406) is arranged on the lower portion of the ash bin explosion-proof cavity;
the upper portion of the transition bin (6) is provided with an upper blowing port (601) and a transition bin upper level indicator (603), and the lower portion of the transition bin (6) is provided with a lower blowing port (602) and a transition bin lower level indicator (604).
2. The combustible flue gas purification device according to claim 1, wherein the interior of the upper box explosion-proof cavity (101), the interior of the middle box explosion-proof cavity (201) and the interior of the ash bin explosion-proof cavity (401) are communicated with each other.
3. The combustible flue gas purification device according to claim 1, wherein the fixing device (203) is a plurality of fixing devices which are evenly distributed inside the explosion-proof cavity (201) of the middle box body.
4. The combustible flue gas purification device according to claim 1, wherein the upper box body (1), the middle box body (2) and the ash bin (4) are fixedly connected through flanges.
5. The combustible flue gas purification device according to claim 1, wherein the gate valve (5) is a double-layer gate valve and is driven electrically or pneumatically.
6. The combustible flue gas purification device according to claim 1, wherein the outer parts of the upper box body explosion-proof cavity (101), the middle box body explosion-proof cavity (201) and the ash bin explosion-proof cavity (401) are provided with heat insulation layers.
7. The combustible flue gas purification device of claims 1-6 for combustible flue gas purification process, comprising the following steps:
firstly, introducing nitrogen into an explosion-proof cavity (101) of the upper box body, an explosion-proof cavity (201) of the middle box body and an explosion-proof cavity (401) of the ash bin, and maintaining a certain pressure;
introducing nitrogen from a combustible gas inlet (403) of the ash bin (4), purging the nitrogen in the device, and discharging air in the device;
introducing combustible flue gas from a combustible gas inlet (403) of the ash bin (4), purifying the flue gas under the action of a filter bag (301), introducing dust into the ash bin (4), and discharging the clean flue gas from a clean gas outlet (102) of the upper box body (1);
regulating the nitrogen pressure in the upper box body explosion-proof cavity (101), the middle box body explosion-proof cavity (201) and the ash bin explosion-proof cavity (401) to be always greater than the internal pressure of the middle box body (2) and maintain the internal pressure;
fifthly, when the dust amount collected in the dust bin (4) reaches a specified loading level, opening the gate valve (5), unloading the dust into the transition bin (6), when the dust amount reaches a specified unloading level, closing the gate valve (5), and when the dust bridges or is hardened and difficult to discharge in the dust bin (4), introducing nitrogen through the purge gas inlet (405) for purging;
and sixthly, when the dust amount in the transition bin (6) reaches a specified loading level, opening the star-shaped discharger (7) and the screw conveyor (8), discharging and conveying the dust to the dust bin (9), when the dust in the transition bin (6) reaches a specified unloading level, closing the star-shaped discharger (7) and the screw conveyor (8), and when bridging or hardening in the transition bin (6) is not easy to discharge, introducing nitrogen for purging through the upper purging port (601) and the lower purging port (602).
8. The combustible flue gas purification process according to claim 7, wherein in the step one, the nitrogen pressure in the box explosion-proof chamber (101), the middle box explosion-proof chamber (201) and the ash bin explosion-proof chamber (401) is maintained at 1000-5000 Pa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110965331.9A CN113476977A (en) | 2021-08-23 | 2021-08-23 | Combustible flue gas purification device and process |
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| CN202110965331.9A CN113476977A (en) | 2021-08-23 | 2021-08-23 | Combustible flue gas purification device and process |
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| CN113476977A true CN113476977A (en) | 2021-10-08 |
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| CN202110965331.9A Pending CN113476977A (en) | 2021-08-23 | 2021-08-23 | Combustible flue gas purification device and process |
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| CN114870533A (en) * | 2022-05-23 | 2022-08-09 | 成都易态科技有限公司 | Ash discharge balancing device and filter |
| CN114870533B (en) * | 2022-05-23 | 2023-07-04 | 成都易态科技有限公司 | Ash discharging balancing device and filter |
| CN115400517A (en) * | 2022-08-15 | 2022-11-29 | 南京科赫科技有限公司 | High-temperature flue gas dust removal system and process |
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