CN112370881A - Nitrogen protection device of coal gas cloth bag diffusion system - Google Patents
Nitrogen protection device of coal gas cloth bag diffusion system Download PDFInfo
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- CN112370881A CN112370881A CN202011198356.2A CN202011198356A CN112370881A CN 112370881 A CN112370881 A CN 112370881A CN 202011198356 A CN202011198356 A CN 202011198356A CN 112370881 A CN112370881 A CN 112370881A
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- coal gas
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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
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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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
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0047—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for discharging the filtered gas
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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
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
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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
- B01D46/42—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
- B01D46/4218—Influencing the heat transfer which act passively, e.g. isolations, heat sinks, cooling ribs
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a nitrogen protection device of a coal gas bag diffusion system, which comprises a box body, wherein the inner side of the box body is sequentially provided with a gas collection chamber, a filter chamber and a gas purification chamber from bottom to top; the gas collection chamber is used for collecting the coal gas sent by the gas inlet pipe and uniformly guiding the coal gas into the filter chamber; the filtering chamber is provided with a plurality of bag type dust removing mechanisms which communicate the air purifying chamber and the air collecting chamber. In the invention, when the gas in the dust remover needs to be diffused, nitrogen is blown into the bag-type dust removing mechanism through the reverse blowing mechanism, so that the gas collection chamber and the gas purification chamber are separated by the filled nitrogen, and the nitrogen is kept not to be leaked and diffused continuously during the nitrogen filling, thereby achieving the purpose of blocking air from entering the gas collection chamber, the filter chamber and the gas purification chamber, further avoiding air from being mixed when the diffusion pipe diffuses the high-temperature gas, preventing the gas from meeting three factors formed by explosion during the diffusion process, avoiding the possibility of explosion, and fundamentally solving the problem of unsafe diffusion.
Description
Technical Field
The invention relates to the technical field of safety of a double-bed cloth bag diffusion system of a circulating fluidized bed, in particular to a nitrogen protection device of a coal gas cloth bag diffusion system.
Background
In emergency accident treatment, a channel for gas diffusion is needed, and compared with a bag-type dust collector which is a closed container, gas can be mixed with air in the bag-type dust collector during diffusion, and the gas is high in temperature (above 800 ℃), so that the three-element condition of explosion is easily achieved, and once the bag-type dust collector is improperly operated, explosion is very easy to occur.
Disclosure of Invention
The invention aims to provide a nitrogen protection device of a coal gas bag diffusion system, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the nitrogen protection device of the coal gas bag diffusion system comprises a box body, wherein a gas collection chamber, a filter chamber and a gas purification chamber are sequentially arranged on the inner side of the box body from bottom to top;
the gas collection chamber is used for collecting the coal gas sent by the gas inlet pipe and uniformly guiding the coal gas into the filter chamber;
a plurality of cloth bag type dust removing mechanisms are arranged in the filtering chamber, and the air purifying chamber and the air collecting chamber are communicated through the cloth bag type dust removing mechanisms;
the gas purifying chamber is used for collecting the filtered gas and discharging the gas through an exhaust pipe at the top of the box body;
the inside of the air purifying chamber is provided with a reverse purging mechanism communicated with a protective gas supply device, and the bottom of the box body is provided with a diffusing pipe communicated with the air collecting chamber.
Furthermore, the reverse purging mechanism comprises a first air supply pipe communicated with an air supply end of the protective gas supply device, the first air supply pipe extends into the air purifying chamber, a plurality of spray heads are arranged at the bottom of the first air supply pipe positioned in the air purifying chamber, and an air outlet end of each spray head corresponds to an air outlet of the cloth bag type dust removal mechanism.
Furthermore, the parts of the air inlet pipe, the exhaust pipe, the diffusing pipe and the first air supply pipe, which are positioned outside the box body, are provided with first control valves.
Furthermore, an enclosure surrounded by the heat-conducting plates is arranged on the inner side of the box body, the bottom end of the enclosure is hermetically connected with the bottom of the inner side of the box body, and the top end of the enclosure is hermetically connected with the bottom surface of the partition plate for dividing the filtering chamber and the air purifying chamber and forms a cooling cavity with the inner wall of the box body.
Furthermore, the gas collection chamber and the filter chamber are both positioned on the inner side of the cooling cavity, a cooling liquid inlet communicated with the cooling cavity is formed in the lower portion of one side of the box body, and a cooling liquid outlet communicated with the cooling cavity is formed in the upper portion of the other side of the box body.
Furthermore, a heat insulation plate is arranged at the lower part of the inner side of the gas collection chamber, and the heat insulation plate and the bottom surface of the inner side of the box body are arranged at intervals to form a double-layer vacuum structure.
Furthermore, the part of the diffusing pipe, which is positioned between the first control valve and the bottom surface of the box body, is communicated with a second air supply pipe, and a second control valve is arranged on the second air supply pipe.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, when the gas in the dust remover needs to be diffused, nitrogen is blown into the bag-type dust removing mechanism through the reverse blowing mechanism (the protective gas in the scheme is preferably nitrogen), so that the gas collection chamber and the gas purification chamber are separated by the filled nitrogen, and the nitrogen is kept not to leak and diffuse in the continuous nitrogen filling process, thereby achieving the purpose of blocking air from entering the gas collection chamber, the filter chamber and the gas purification chamber, further avoiding air from being mixed when the diffusion pipe diffuses the high-temperature gas, ensuring that the gas cannot meet the three elements (namely the gas, the air and the high temperature) formed by explosion in the diffusion process, avoiding the possibility of explosion, and fundamentally solving the problem of unsafe diffusion.
Drawings
FIG. 1 is a schematic structural diagram of a nitrogen protection device of a coal gas bag diffusion system;
fig. 2 is a top view of a reverse purging mechanism in a nitrogen protection device of a coal gas bag diffusion system.
In the figure: 1. a box body; 11. a gas collection chamber; 111. a heat insulation plate; 12. a filtering chamber; 121. a bag type dust removal mechanism; 13. a gas purifying chamber; 14. a reverse purging mechanism; 141. a first gas supply pipe; 142. a spray head; 143. a second gas supply pipe; 15. a diffusing pipe; 16. a partition plate; 2. an air inlet pipe; 3. an exhaust pipe; 4. a first control valve; 5. enclosing; 6. a cooling chamber; 7. a coolant inlet; 8. a coolant outlet; 9. a second control valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
the nitrogen protection device of the coal gas bag diffusion system comprises a box body 1, wherein the inner side of the box body 1 is sequentially provided with a gas collection chamber 11, a filter chamber 12 and a gas purification chamber 13 from bottom to top;
the gas collection chamber 11 is used for collecting the coal gas sent by the gas inlet pipe 2 and uniformly guiding the coal gas to the filter chamber 12;
a plurality of bag-type dust removing mechanisms 121 are arranged in the filter chamber 12, and the air purifying chamber 13 is communicated with the air collecting chamber 11 by the bag-type dust removing mechanisms 121;
the gas purifying chamber 13 is used for collecting the filtered gas and discharging the gas through the exhaust pipe 3 at the top of the box body 1;
the inside of the air purifying chamber 13 is provided with a reverse purging mechanism 14 communicated with a protective gas supply device, and the bottom of the box body 1 is provided with a diffusing pipe 15 communicated with the air collecting chamber 11.
When the gas in the dust remover needs to be diffused, nitrogen is blown into the bag-type dust removing mechanism 121 through the reverse blowing mechanism 14 (the protective gas in the scheme is preferably nitrogen), so that the gas collection chamber 11 and the gas purification chamber 13 are separated by the filled nitrogen, the nitrogen is kept not to be leaked and diffused continuously during the nitrogen filling, and the purpose of blocking air from entering the gas collection chamber 11, the filter chamber 12 and the gas purification chamber 13 is achieved, so that when the high-temperature gas is diffused through the diffusing pipe 15, no air is mixed, the gas cannot meet three elements (namely, the gas, the air and the high temperature) formed by explosion in the diffusing process, the possibility of explosion cannot be generated, and the problem of unsafe diffusing is fundamentally solved.
The reverse purging mechanism 14 preferably has the following structure: the device comprises a first air supply pipe 141 communicated with an air supply end of a protective gas supply device, the first air supply pipe 141 extends into the air purifying chamber 13, a plurality of spray heads 142 are arranged at the bottom of the first air supply pipe 141 positioned in the air purifying chamber 13, and an air outlet end of each spray head 142 corresponds to an air outlet of the cloth bag type dust removing mechanism 121.
The preferred protective gas in this embodiment is nitrogen, although other protective gases such as helium and argon may be selected as desired. Since nitrogen has a smaller molecular mass than oxygen, nitrogen floats above oxygen under the action of gravity, and thus, nitrogen needs to be fed into the bag-type dust removal mechanism 121 in a jet manner to isolate air. The outlet of each bag-type dust removal mechanism 121 is provided with a corresponding spray head 142, so that the isolation effect after nitrogen filling is better.
In addition, the intake pipe 2, the blast pipe 3, the part that diffuses pipe 15 and first air supply pipe 141 and lie in the box 1 outside all is equipped with first control valve 4, be used for realizing automatic regulation and control, when diffusing, can close first control valve 4 on intake pipe 2 and the blast pipe 3, will diffuse first control valve 4 on pipe 15 and the first air supply pipe 141 again and open, last the air feed through first air supply pipe 141, after emptying the inboard air of dust remover completely, open first control valve 4 on intake pipe 2 again and carry out the diffusion of high temperature coal gas, can avoid in the air sneaks into the coal gas equally, realize safe diffusion.
In the diffusion process, nitrogen can be slowly fed, and the oxygen is extruded out of the dust remover by utilizing the principle that the nitrogen can float above the oxygen under the action of gravity, so that the air can be emptied.
In addition, the inner side of the box body 1 is provided with a space 5 enclosed by a heat conduction plate, the bottom end of the space 5 is hermetically connected with the bottom of the inner side of the box body 1, the top end of the space 5 is hermetically connected with the bottom surface of a partition plate 16 for dividing the filtering chamber 12 and the air purifying chamber 13, and the space and the inner wall of the box body 1 form a cooling cavity 6.
The gas collection chamber 11 and the filter chamber 12 are both positioned at the inner side of the cooling cavity 6, a cooling liquid inlet 7 communicated with the cooling cavity 6 is arranged at the lower part of one side of the box body 1, and a cooling liquid outlet 8 communicated with the cooling cavity 6 is arranged at the upper part of the other side of the box body 1.
During emptying operation, air is prevented from being mixed into high-temperature coal gas, the temperature of the coal gas can be properly reduced, the cooling cavity 6 formed by the enclosure 5, the inner wall of the box body 1 and the partition plate 16 can be used for continuously cooling the high-temperature coal gas fed into the dust remover, the temperature of the coal gas is further reduced, and the safety of emptying is improved.
In addition, the lower part of the inner side of the gas collection chamber 11 is provided with a heat insulation plate 111, the heat insulation plate 111 and the bottom surface of the inner side of the box body 1 are arranged at intervals to form a double-layer vacuum structure, and the box body 1 is prevented from being influenced by the heat conduction effect of high-temperature coal gas, so that the use and operation safety is prevented from being influenced due to the temperature rise.
The part that diffuses pipe 15 and be located between first control valve 4 and the box 1 bottom surface communicates there is the second air supply pipe 143, is equipped with second control valve 9 on the second air supply pipe 143, when the inside air of complete evacuation dust remover, accessible first air supply pipe 141 and second air supply pipe 143 go on simultaneously, evacuation with higher speed, second air supply pipe 143 also can be the reserve air supply line simultaneously, launch when first air supply pipe 141 breaks down to guarantee the everything that diffuses.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (7)
1. Coal system gas sack system nitrogen protection device that diffuses, including box (1), its characterized in that: an air collecting chamber (11), a filtering chamber (12) and an air purifying chamber (13) are sequentially arranged on the inner side of the box body (1) from bottom to top;
the gas collection chamber (11) is used for collecting the coal gas sent by the gas inlet pipe (2) and uniformly guiding the coal gas into the filter chamber (12);
a plurality of bag-type dust removing mechanisms (121) are arranged in the filtering chamber (12), and the bag-type dust removing mechanisms (121) are used for communicating the air purifying chamber (13) with the air collecting chamber (11);
the gas purifying chamber (13) is used for collecting the filtered coal gas and discharging the coal gas through an exhaust pipe (3) at the top of the box body (1);
the inside of the air purifying chamber (13) is provided with a reverse purging mechanism (14) communicated with a protective gas supply device, and the bottom of the box body (1) is provided with a diffusing pipe (15) communicated with the air collecting chamber (11).
2. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 1, characterized in that: the reverse purging mechanism (14) comprises a first air supply pipe (141) communicated with an air supply end of the protective gas supply device, the first air supply pipe (141) extends to the inside of the air purifying chamber (13), a plurality of spray heads (142) are arranged at the bottom of the first air supply pipe (141) located in the air purifying chamber (13), and an air outlet end of each spray head (142) corresponds to an air outlet of the cloth bag type dust removing mechanism (121).
3. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 2, characterized in that: the air inlet pipe (2), the exhaust pipe (3), the diffusing pipe (15) and the first air supply pipe (141) are all provided with a first control valve (4) on the part outside the box body (1).
4. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 1, characterized in that: the inner side of the box body (1) is provided with a space (5) surrounded by a heat conducting plate, the bottom end of the space (5) is hermetically connected with the bottom of the inner side of the box body (1), the top end of the space (5) is hermetically connected with the bottom surface of a partition plate (16) for dividing the filtering chamber (12) and the air purifying chamber (13), and the space and the inner wall of the box body (1) form a cooling cavity (6).
5. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 4, characterized in that: the gas collection chamber (11) and the filter chamber (12) are both positioned on the inner side of the cooling cavity (6), a cooling liquid inlet (7) communicated with the cooling cavity (6) is formed in the lower portion of one side of the box body (1), and a cooling liquid outlet (8) communicated with the cooling cavity (6) is formed in the upper portion of the other side of the box body (1).
6. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 4, characterized in that: and a heat insulation plate (111) is arranged at the lower part of the inner side of the gas collection chamber (11), and the heat insulation plate (111) and the bottom surface of the inner side of the box body (1) are arranged at intervals to form a double-layer vacuum structure.
7. The nitrogen protection device for the coal gas cloth bag bleeding system according to claim 1, characterized in that: the part of the diffusing pipe (15) between the first control valve (4) and the bottom surface of the box body (1) is communicated with a second air supply pipe (143), and a second control valve (9) is arranged on the second air supply pipe (143).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198356.2A CN112370881A (en) | 2020-10-31 | 2020-10-31 | Nitrogen protection device of coal gas cloth bag diffusion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198356.2A CN112370881A (en) | 2020-10-31 | 2020-10-31 | Nitrogen protection device of coal gas cloth bag diffusion system |
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| Publication Number | Publication Date |
|---|---|
| CN112370881A true CN112370881A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011198356.2A Pending CN112370881A (en) | 2020-10-31 | 2020-10-31 | Nitrogen protection device of coal gas cloth bag diffusion system |
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| CN (1) | CN112370881A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018995A (en) * | 2021-02-25 | 2021-06-25 | 四川思达能环保科技有限公司 | Method for preventing condensation of filter element in dust collector back flushing and dust collector back flushing device |
| CN114870533A (en) * | 2022-05-23 | 2022-08-09 | 成都易态科技有限公司 | Ash discharge balancing device and filter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2092910A (en) * | 1981-02-13 | 1982-08-25 | Air Pollution Holdings Ltd | Filter for removing particulate material from gases |
| CN201168519Y (en) * | 2008-03-28 | 2008-12-24 | 上海宝钢工程技术有限公司 | High temperature coal gas bag-type dust remover |
| CN201558626U (en) * | 2009-10-09 | 2010-08-25 | 沈阳东和环保有限公司 | Gas dry-process safety cloth bag dust remover |
| CN205461566U (en) * | 2016-01-04 | 2016-08-17 | 阳城县舜天达天然气有限公司 | Purifier is used in coal bed gas liquefaction |
| US20170120267A1 (en) * | 2015-11-03 | 2017-05-04 | Spraying Systems Co. | Apparatus and method for spray drying |
| CN108067056A (en) * | 2016-11-11 | 2018-05-25 | 袁云秀 | The pulse dust removal system that dust removal state in Furniture manufacturing workshop can be monitored |
| CN108854299A (en) * | 2018-08-23 | 2018-11-23 | 广东青蓝环保科技有限公司 | A kind of bag filter |
-
2020
- 2020-10-31 CN CN202011198356.2A patent/CN112370881A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2092910A (en) * | 1981-02-13 | 1982-08-25 | Air Pollution Holdings Ltd | Filter for removing particulate material from gases |
| CN201168519Y (en) * | 2008-03-28 | 2008-12-24 | 上海宝钢工程技术有限公司 | High temperature coal gas bag-type dust remover |
| CN201558626U (en) * | 2009-10-09 | 2010-08-25 | 沈阳东和环保有限公司 | Gas dry-process safety cloth bag dust remover |
| US20170120267A1 (en) * | 2015-11-03 | 2017-05-04 | Spraying Systems Co. | Apparatus and method for spray drying |
| CN205461566U (en) * | 2016-01-04 | 2016-08-17 | 阳城县舜天达天然气有限公司 | Purifier is used in coal bed gas liquefaction |
| CN108067056A (en) * | 2016-11-11 | 2018-05-25 | 袁云秀 | The pulse dust removal system that dust removal state in Furniture manufacturing workshop can be monitored |
| CN108854299A (en) * | 2018-08-23 | 2018-11-23 | 广东青蓝环保科技有限公司 | A kind of bag filter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018995A (en) * | 2021-02-25 | 2021-06-25 | 四川思达能环保科技有限公司 | Method for preventing condensation of filter element in dust collector back flushing and dust collector back flushing device |
| 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 |
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Application publication date: 20210219 |
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