CN211274172U - Denitration and dust removal integrated equipment based on powder catalyst - Google Patents
Denitration and dust removal integrated equipment based on powder catalyst Download PDFInfo
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- CN211274172U CN211274172U CN201921967655.0U CN201921967655U CN211274172U CN 211274172 U CN211274172 U CN 211274172U CN 201921967655 U CN201921967655 U CN 201921967655U CN 211274172 U CN211274172 U CN 211274172U
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Abstract
A denitration and dust removal integrated device based on a powder catalyst comprises a device body, a waste catalyst discharge pipe, a plurality of groups of double-layer filter bag assemblies, a desulfurizer pipe, an ammonia pipe, a support frame, a partition plate, a support plate, a powder catalyst storage bin, a compressed air pipe, a plurality of primary injection pipes and a plurality of secondary injection pipes; a purifying bin is formed at the upper part of the device body, and an air outlet is arranged at the top of the purifying bin; a waste ash hopper is integrally arranged at the bottom of the device body; the middle part of the device body is communicated with the discharge end of the waste gas feeding pipe; the double-layer filter bag assembly comprises a dust removal filter bag positioned on the outer layer and a secondary denitration filter bag positioned on the inner layer; a discharge port of the powder catalyst storage bin is connected with a compressed air pipe; the compressed air pipe passes through the device body and extends into the device body. In the utility model, the integration of desulfurization, denitration, dust removal of coke oven flue gas in the device is realized, the characteristics of compact coke oven scene, small occupation of land are satisfied well, and equipment desulfurization, denitration, dust collection efficiency are high.
Description
Technical Field
The utility model relates to a denitration, dust collecting equipment field especially relate to a denitration and dust removal integration equipment based on powder catalyst.
Background
Coal is the main energy supply in China, occupies a large proportion in energy structures in the industries of thermal power, metallurgy, chemical engineering and the like, and particularly greatly increases the demand of coal along with the high-speed development of economy, thereby increasing the coal consumption. The smoke or industrial waste gas generated in the combustion process of coal contains a large amount of pollutants such as dust, sulfur dioxide, nitrogen oxides and the like, and is a weight precursor of pollutants such as regional haze, wide-area acid rain, global environmental pollution and the like. At present, with the establishment of various national environmental protection policies and emission standards, the flue gas is required to be purified by a dust removal device, a desulfurization device and a denitration device, and can be discharged after meeting emission indexes.
At present, the desulfurization, denitration and dust removal treatment in flue gas generally adopts relatively independent devices, namely, the desulfurization device is responsible for the desulfurization, the denitration device is responsible for the denitration, and the dust removal device is responsible for the dust removal, and is the combined use of the desulfurization device, the denitration device and the dust removal device, so that the problems of long process flow, large floor area, poor system load matching and the like exist.
In order to solve the problems, the application provides denitration and dust removal integrated equipment based on a powder catalyst, and particularly provides a dry-method desulfurization, SCR denitration and cloth bag dust removal integrated device for coke oven flue gas based on the powder catalyst.
SUMMERY OF THE UTILITY MODEL
(A) practical purpose
In order to solve the technical problem that exists among the background art, this practicality provides a denitration and dust removal integration equipment based on powder catalyst.
(II) technical scheme
In order to solve the problems, the utility model provides denitration and dust removal integrated equipment based on a powder catalyst, which comprises an equipment body, a waste catalyst discharging pipe, a plurality of groups of double-layer filter bag assemblies, a desulfurizer pipe, an ammonia pipe, a support frame, a partition plate, a support plate, a powder catalyst storage bin, a compressed air pipe, a plurality of primary injection pipes and a plurality of secondary injection pipes;
a purifying bin is formed at the upper part of the device body, and an air outlet is arranged at the top of the purifying bin; the bottom of the device body is integrally provided with a waste ash hopper, and the bottom of the waste ash hopper is provided with an ash outlet; the middle part of the device body is communicated with the discharge end of a waste gas feed pipe, and the waste gas feed pipe is simultaneously communicated with the discharge ends of a desulfurizer pipe and an ammonia pipe;
the baffle is arranged above the middle part of the device body, the supporting plate is arranged below the middle part of the device body, and the supporting frame is arranged on the baffle; the device comprises a device body, a support frame, a plurality of double-layer filter bag assemblies, a support plate and a plurality of groups of double-layer filter bag assemblies, wherein the double-layer filter bag assemblies are arranged in the device body side by side and vertically; the double-layer filter bag assembly comprises a dust removal filter bag positioned on the outer layer and a secondary denitration filter bag positioned on the inner layer; the lower end of the double-layer filter bag assembly is connected with a waste catalyst discharge pipe through a pipeline; the discharge end of the waste catalyst discharge pipe penetrates through the outer side of the device body;
a discharge port of the powder catalyst storage bin is connected with a compressed air pipe; the compressed air pipe penetrates through the device body and extends into the device body; the air outlet end of the compressed air pipe is respectively connected with the air inlets of the primary injection pipes and the air inlets of the secondary injection pipes; the air injection direction of the secondary injection pipe faces the outer surface of the dust removal filter bag; the gas outlet of the first-level injection pipe extends into the double-layer filter bag assembly, and the gas injection direction of the first-level injection pipe faces the surface of the second-level denitration filter bag.
Preferably, the particle size of the powder catalyst in the powder catalyst storage bin is less than 20 μm.
Preferably, the powder catalyst is a porous catalyst.
Preferably, the angle between the inner wall of the waste ash hopper and the horizontal plane is greater than 60 degrees.
Preferably, the device body is made of carbon steel material.
This practical above-mentioned technical scheme has following profitable technological effect:
the utility model relates to a coke oven flue gas dry desulfurization, SCR denitration and cloth bag dust removal integrated device based on a powder catalyst; the air injection direction of the secondary injection pipe faces the outer surface of the dust removal filter bag, and the air injection direction of the primary injection pipe faces the surface of the secondary denitration filter bag; mixing the desulfurizer with ammonia gas and high-temperature flue gas, and feeding the mixture into the device body; SO in high temperature flue gas2And the reaction byproduct is captured by a dust removal filter bag and discharged through an ash outlet of a waste ash bucket. And the desulfurized gas passes through the dust removal filter bag to reach the surface of the secondary denitration filter bag and is subjected to denitration reaction with the split catalyst sprayed on the surface of the secondary denitration filter bag, and the by-product of the denitration reaction and part of the powder catalyst fall into the waste catalyst discharge pipe and are discharged. Wherein, the upper portion setting of double-deck filter bag subassembly is on the support frame, and its lower part sets up on the layer board, and double-deck filter bag subassembly skin realizes dust removal function, and the inlayer realizes the denitration function. Under the condition of timing (or constant differential pressure), the double-layer filter bag assembly is blown and swept by the primary injection pipe and the secondary injection pipe respectively, the trapped dust and the denitration by-products are discharged from corresponding independent discharge ports respectively without mutual influence, the integration of desulfurization, denitration and dust removal of the coke oven smoke in the device is realized, the characteristics of compact coke oven site and small occupied area are well met, and the desulfurization, denitration and dust removal efficiency of the device is high.
Drawings
Fig. 1 is a schematic structural diagram of denitration and dust removal integrated equipment based on a powder catalyst provided by the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present application. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the denitration and dust removal integrated device based on the powder catalyst provided by the present invention comprises a device body 2, a waste catalyst discharge pipe 6, a plurality of sets of double-layer filter bag assemblies 13, a desulfurizer pipe 7, an ammonia pipe 8, a support frame 15, a partition plate 16, a support plate 17, a powder catalyst storage bin 10, a compressed air pipe 14, a plurality of primary injection pipes 11 and a plurality of secondary injection pipes 12;
a purifying bin is formed at the upper part of the device body 2, and an air outlet 4 is arranged at the top of the purifying bin; a waste ash hopper 3 is integrally arranged at the bottom of the device body 2, and an ash outlet 5 is arranged at the bottom of the waste ash hopper 3; the middle part of the device body 2 is communicated with the discharge end of the waste gas feeding pipe 1, and the waste gas feeding pipe 1 is simultaneously communicated with the discharge ends of the desulfurizer pipe 7 and the ammonia pipe 8;
the clapboard 16 is arranged above the middle part of the device body 2, the supporting plate 17 is arranged below the middle part of the device body 2, and the supporting frame 15 is arranged on the clapboard 16; the multiple groups of double-layer filter bag assemblies 13 are arranged in parallel and vertically in the device body 2, wherein the upper parts of the double-layer filter bag assemblies 13 are arranged on the support frame 15, and the lower parts of the double-layer filter bag assemblies are arranged on the supporting plate 17; the double-layer filter bag assembly 13 comprises a dust removal filter bag 131 positioned on the outer layer and a secondary denitration filter bag 132 positioned on the inner layer; the lower end of the double-layer filter bag component 13 is connected with a waste catalyst discharge pipe 6 through a pipeline; the discharge end of the waste catalyst discharge pipe 6 penetrates through the outer side of the device body 2;
a discharge port of the powder catalyst storage bin 10 is connected with a compressed air pipe 14; the compressed air pipe 14 passes through the apparatus body 2 and extends into the inside of the apparatus body 2; the air inlet end of the compressed air pipe 14 is connected with the air outlet of the high-pressure air jet, and the air outlet end of the compressed air pipe 14 is respectively connected with the air inlets of the primary injection pipes 11 and the air inlets of the secondary injection pipes 12; the air injection direction of the secondary injection pipe 12 faces the outer surface of the dust removal filter bag 131; the air outlet of the primary injection pipe 11 extends into the double-layer filter bag assembly 13, and the air injection direction of the primary injection pipe faces the surface of the secondary denitration filter bag 132.
In an alternative embodiment, the device body 2 is made of carbon steel material.
The device is integrated equipment for dry desulfurization, SCR denitration and cloth bag dust removal of coke oven flue gas based on a powder catalyst; in operation, the primary injection pipe 11 and the secondary injection pipe 12 respectively spray the double-layer filter bag assembly 13, wherein the air injection direction of the secondary injection pipe 12 faces the outer surface of the dust removal filter bag 131, and the air injection direction of the primary injection pipe 11 faces the surface of the secondary denitration filter bag 132; inside the high temperature flue gas got into device body 2 by waste gas inlet pipe 1, simultaneously, the desulfurizer got into waste gas inlet pipe 1 through desulfurizer pipe 7, and the ammonia got into waste gas inlet pipe 1 through ammonia pipe 8 in to realize that the desulfurizer leads to with the ammonia and mix and get into in the device body 2 jointly with the high temperature flue gas.
In this application, SO in the high-temperature flue gas2And the reaction byproducts are captured by the dust removal filter bag 131 and discharged through the ash outlet 5 of the waste ash bucket 3. The desulfurized gas passes through the dust removal filter bag 131 to reach the surface of the secondary denitration filter bag 132, and is subjected to denitration reaction with the split catalyst sprayed on the surface of the secondary denitration filter bag 132, and the by-product of the denitration reaction and part of the powder catalyst fall into the waste catalyst discharge pipe 6 and are discharged. Wherein, the upper portion of double-deck filter bag subassembly 13 sets up on support frame 15, and its lower part sets up on layer board 17, and double-deck filter bag subassembly 13 outer layer realizes dust removal function, and the denitration function is realized to the inlayer.
Under the condition of timing (or constant differential pressure), the double-layer filter bag assembly 13 is blown and swept by the primary injection pipe 11 and the secondary injection pipe 12 respectively, the trapped dust and denitration byproducts are discharged from corresponding independent discharge ports respectively and do not affect each other, the integration of desulfurization, denitration and dust removal of the coke oven smoke in the device is realized, the characteristics of compact coke oven field and small occupied area are well met, and the desulfurization, denitration and dust removal efficiency of the device is high.
In an alternative embodiment, the particle size of the powdered catalyst in the powdered catalyst storage bin 10 is less than 20 μm.
In an alternative embodiment, the powder catalyst is a porous catalyst.
The powder catalyst is processed into a powder catalyst with a particle size specification of less than 20 microns by crushing the recovered catalyst, or a new powder catalyst with a particle size specification (less than 20 microns) can be used; the powder catalyst is sprayed on the outer layer of the secondary denitration filter bag 132 at regular time; the powder catalyst has the advantages of large gas-solid contact area, good denitration catalytic reaction effect and strong load adaptability, and can greatly reduce the investment cost of the system.
In an alternative embodiment, the inner wall of the waste ash hopper 3 is at an angle greater than 60 degrees to the horizontal, facilitating increased discharge speed and efficiency.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or illustrative of the principles of the present invention and do not constitute limitations on the present invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A denitration and dust removal integrated device based on a powder catalyst is characterized by comprising a device body (2), a waste catalyst discharge pipe (6), a plurality of groups of double-layer filter bag assemblies (13), a desulfurizer pipe (7), an ammonia pipe (8), a support frame (15), a partition plate (16), a support plate (17), a powder catalyst storage bin (10), a compressed air pipe (14), a plurality of primary injection pipes (11) and a plurality of secondary injection pipes (12);
a purifying bin is formed at the upper part of the device body (2), and an air outlet (4) is arranged at the top of the purifying bin; a waste ash hopper (3) is integrally arranged at the bottom of the device body (2), and an ash outlet (5) is arranged at the bottom of the waste ash hopper (3); the middle part of the device body (2) is communicated with the discharge end of the waste gas feeding pipe (1), and the waste gas feeding pipe (1) is simultaneously communicated with the discharge ends of the desulfurizer pipe (7) and the ammonia pipe (8);
the partition plate (16) is arranged above the middle part of the device body (2), the supporting plate (17) is arranged below the middle part of the device body (2), and the supporting frame (15) is arranged on the partition plate (16); the device comprises a device body (2), a plurality of groups of double-layer filter bag assemblies (13) and a support frame (15), wherein the double-layer filter bag assemblies (13) are arranged in parallel and are vertically arranged in the device body (2), the upper parts of the double-layer filter bag assemblies (13) are arranged on the support frame (15), and the lower parts of the double-layer filter bag assemblies are arranged on a supporting plate (; the double-layer filter bag assembly (13) comprises a dust removal filter bag (131) positioned on the outer layer and a secondary denitration filter bag (132) positioned on the inner layer; the lower end of the double-layer filter bag component (13) is connected with a waste catalyst discharge pipe (6) through a pipeline; the discharge end of the waste catalyst discharge pipe (6) penetrates through the outer side of the device body (2);
a discharge port of the powder catalyst storage bin (10) is connected with a compressed air pipe (14); the compressed air pipe (14) penetrates through the device body (2) and extends into the device body (2); the air inlet end of the compressed air pipe (14) is connected with the air outlet of the high-pressure air jet, and the air outlet end of the compressed air pipe (14) is respectively connected with the air inlets of the primary injection pipes (11) and the air inlets of the secondary injection pipes (12); the air injection direction of the secondary injection pipe (12) faces the outer surface of the dust removal filter bag (131); the air outlet of the primary injection pipe (11) extends into the double-layer filter bag assembly (13), and the air injection direction of the primary injection pipe faces the surface of the secondary denitration filter bag (132).
2. The denitration and dust removal integrated equipment based on the powder catalyst as claimed in claim 1, wherein the particle size specification of the powder catalyst in the powder catalyst storage bin (10) is less than 20 μm.
3. The denitration and dust removal integrated apparatus based on a powder catalyst as claimed in claim 1 or 2, wherein the powder catalyst is a porous catalyst.
4. The denitration and dust removal integrated equipment based on the powder catalyst as claimed in claim 1, wherein the included angle between the inner wall of the waste ash hopper (3) and the horizontal plane is more than 60 degrees.
5. The denitration and dust removal integrated equipment based on the powder catalyst as claimed in claim 1, wherein the device body (2) is made of carbon steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967655.0U CN211274172U (en) | 2019-11-14 | 2019-11-14 | Denitration and dust removal integrated equipment based on powder catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967655.0U CN211274172U (en) | 2019-11-14 | 2019-11-14 | Denitration and dust removal integrated equipment based on powder catalyst |
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| Publication Number | Publication Date |
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| CN211274172U true CN211274172U (en) | 2020-08-18 |
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| CN201921967655.0U Active CN211274172U (en) | 2019-11-14 | 2019-11-14 | Denitration and dust removal integrated equipment based on powder catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983800A (en) * | 2023-09-28 | 2023-11-03 | 北京利德衡环保工程有限公司 | Cylinder desulfurization dust removal denitration separator |
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2019
- 2019-11-14 CN CN201921967655.0U patent/CN211274172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983800A (en) * | 2023-09-28 | 2023-11-03 | 北京利德衡环保工程有限公司 | Cylinder desulfurization dust removal denitration separator |
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