CN209885559U - Flue gas denitration injection system for selective non-catalytic reduction method of coal-fired flue gas - Google Patents
Flue gas denitration injection system for selective non-catalytic reduction method of coal-fired flue gas Download PDFInfo
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- CN209885559U CN209885559U CN201920358981.5U CN201920358981U CN209885559U CN 209885559 U CN209885559 U CN 209885559U CN 201920358981 U CN201920358981 U CN 201920358981U CN 209885559 U CN209885559 U CN 209885559U
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- flue gas
- wall
- fixedly connected
- coal
- pipeline
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000003546 flue gas Substances 0.000 title claims abstract description 62
- 238000010531 catalytic reduction reaction Methods 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 28
- 239000000779 smoke Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005507 spraying Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- -1 through manometer Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a coal-fired flue gas selectivity non-catalytic reduction method flue gas denitration injection system, including the aqueous ammonia container, the first support of top outer wall fixedly connected with of aqueous ammonia container, the top outer wall fixedly connected with air compressor of first support, air compressor's output is connected with first pipeline, the top outer wall fixedly connected with absorption tower of first pipeline. The outer wall fixedly connected with second support of top of aqueous ammonia container, the outer wall fixedly connected with centrifugal pump of top of second support. The utility model discloses an air compressor, centrifugal pump and the sprinkler head that set up can be with even spraying of aqueous ammonia atomizing in the absorption tower to increase the area of contact of reductant and coal-fired flue gas, through manometer, air pressure regulating valve, flowmeter and the flow control valve that sets up, can in time adjust the flow of atmospheric pressure size and aqueous ammonia, in order to reach better denitration effect to coal-fired flue gas.
Description
Technical Field
The utility model relates to a coal-fired flue gas denitration technical field especially relates to a coal-fired flue gas selectivity non-catalytic reduction method flue gas denitration injection system.
Background
The coal-fired flue gas contains a large amount of nitrogen oxides, and the environment is seriously polluted when the coal-fired flue gas is directly discharged into the air. The importance of preventing environmental pollution has been pointed out as a worldwide problem. With the development of modern industrial production and the improvement of living standard, air pollution becomes a very concerned problem, and certain nitrogen oxides contained in coal-fired flue gas seriously pollute the air and need to be denitrated before the flue gas is discharged into the air.
The flue gas denitration system by the non-catalytic reduction method for the coal-fired flue gas in the prior art cannot evenly spray ammonia water on the coal-fired flue gas in an atomized manner, is inconvenient to adjust the spraying flow of the ammonia water, and cannot well filter dust in the coal-fired flue gas.
Therefore, it is necessary to design a flue gas denitration injection system by a selective non-catalytic reduction method for coal-fired flue gas to solve the above problems.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art and providing a flue gas denitration injection system adopting a selective non-catalytic reduction method for coal-fired flue gas.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a flue gas denitration injection system by a coal-fired flue gas selective non-catalytic reduction method comprises an ammonia water container, wherein a first support is fixedly connected to the outer wall of the top of the ammonia water container, an air compressor is fixedly connected to the outer wall of the top of the first support, a first connecting disc is arranged at the output end of the air compressor, a second connecting disc is arranged on the outer wall of the top of the first connecting disc and is fixedly connected with the first connecting disc through a screw rod, a first pipeline is fixedly connected to the outer wall of the top of the second connecting disc, a pressure gauge is arranged on one side of the first pipeline, an air pressure regulating valve is arranged on the outer wall of the first pipeline, an absorption tower is fixedly connected to the outer wall of the top of the first pipeline, a smoke outlet is formed in the outer wall of the top of the absorption tower and is located on one side of the first pipeline, and a second filter screen is, and a smoke inlet is formed in the outer wall of the bottom of one side of the absorption tower. The ammonia water container's top outer wall fixedly connected with second support, and the second support is located one side of first support, the top outer wall fixedly connected with centrifugal pump of second support, the output of centrifugal pump is provided with first connection pad, the top outer wall of first connection pad is provided with the second connection pad, the top outer wall fixedly connected with second pipeline of second connection pad, one side of second pipeline is provided with the flowmeter, the outer wall at second pipeline top is provided with the check valve.
Furthermore, the outer wall of the second pipeline is provided with a flow regulating valve, and the flow regulating valve is positioned above the flowmeter.
Furthermore, the check valve and the outer wall of one side of the flow regulating valve are both provided with movable handles.
Furthermore, be provided with first filter screen on the inner wall of absorption tower, and first filter screen is located the top of advancing the mouth.
Further, a waste liquid container is arranged at the bottom of the absorption tower, and the waste liquid container is placed on the ground.
Furthermore, one end of the first pipeline, which is far away from the air compressor, is fixedly connected with a sprinkler head, and the sprinkler head is positioned inside the absorption tower.
The utility model has the advantages that:
1. through the air compressor, the centrifugal pump and the sprinkler head that set up, can be with the even spraying of aqueous ammonia atomizing in the absorption tower to increase the area of contact of reductant and coal-fired flue gas, in order to reach better denitration effect to coal-fired flue gas.
2. Through manometer, air pressure regulating valve, flowmeter and the flow control valve that sets up, can in time adjust the flow of atmospheric pressure size and aqueous ammonia, guarantee that the aqueous ammonia can atomize and spout through the sprinkler head to can in time adjust the flow that sprays of aqueous ammonia according to flue gas concentration.
3. Through the first filter screen and the second filter screen, solid particles contained in the flue gas can be filtered to prevent excessive dust in the absorption tower, and ammonia water contained in the flue gas can be absorbed before the flue gas is discharged.
Drawings
FIG. 1 is a schematic structural view of a flue gas denitration injection system of a coal-fired flue gas selective non-catalytic reduction method according to the present invention;
FIG. 2 is a schematic diagram of a partial cross-sectional structure of a flue gas denitration injection system of a coal-fired flue gas selective non-catalytic reduction method according to the present invention;
fig. 3 is a schematic structural diagram of the sprinkler head of the flue gas denitration injection system of the coal-fired flue gas selective non-catalytic reduction method provided by the utility model.
In the figure: the device comprises an ammonia water container 1, a first support 2, an air compressor 3, a first connecting disc 4, a second connecting disc 5, a first pipeline 6, a pressure gauge 7, an air pressure regulating valve 8, a check valve 9, a flow regulating valve 10, a movable handle 11, a flow meter 12, a centrifugal pump 13, a second support 14, a smoke outlet 15, a second filter screen 16, an absorption tower 17, a first filter screen 18, a smoke inlet 19, a waste liquid container 20, a sprinkler head 21 and a second pipeline 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, a flue gas denitration injection system by a coal-fired flue gas selective non-catalytic reduction method includes an ammonia water container 1, a first support 2 is fixedly connected to the outer wall of the top of the ammonia water container 1, an air compressor 3 is fixedly connected to the outer wall of the top of the first support 2, a first connecting disc 4 is arranged at the output end of the air compressor 3, a second connecting disc 5 is arranged on the outer wall of the top of the first connecting disc 4, the second connecting disc 5 is fixedly connected to the first connecting disc 4 through a screw rod, a first pipeline 6 is fixedly connected to the outer wall of the top of the second connecting disc 5, a pressure gauge 7 is arranged on one side of the first pipeline 6, an air pressure regulating valve 8 is arranged on the outer wall of the first pipeline 6, an absorption tower 17 is fixedly connected to the outer wall of the top of the first pipeline 6, a flue gas outlet 15 is arranged on the outer wall of the top of, the inner wall of the smoke outlet 15 is provided with a second filter screen 16, and the outer wall of the bottom of one side of the absorption tower 17 is provided with a smoke inlet 19. Top outer wall fixedly connected with second support 14 of aqueous ammonia container 1, and second support 14 is located one side of first support 2, top outer wall fixedly connected with centrifugal pump 13 of second support 14, the output of centrifugal pump 13 is provided with first connection pad 4, the top outer wall of first connection pad 4 is provided with second connection pad 5, the top outer wall fixedly connected with second pipeline 22 of second connection pad 5, one side of second pipeline 22 is provided with flowmeter 12, the outer wall at second pipeline 22 top is provided with check valve 9, after the centrifugal pump is prevented from closing, coal-fired flue gas passes through in the second pipeline gets into the aqueous ammonia container.
Further, the outer wall of the second pipeline 22 is provided with a flow regulating valve 10, and the flow regulating valve 10 is located above the flowmeter 12, so that the flow of the ammonia water can be timely regulated through the flow regulating valve 10 according to actual needs.
Furthermore, the outer walls of the check valve 9 and the flow regulating valve 10 are both provided with a movable handle 11, and the check valve 9 and the flow regulating valve 10 can be opened and closed conveniently by rotating the movable handles 11.
Further, be provided with first filter screen 18 on the inner wall of absorption tower 17, and first filter screen 18 is located the top of advancing cigarette mouth 19, can filter down the dust that contains in the coal-fired flue gas through first filter screen 18 to avoid accumulating too much dust in absorption tower 17.
Further, the bottom of absorption tower 17 is provided with waste liquid container 20, and waste liquid container 20 places subaerial, the aqueous ammonia solution after the recycle of being convenient for to waste liquid outflow causes environmental pollution.
Further, a sprinkler 21 is fixedly connected to an end of the first pipe 6 away from the air compressor 3, and the sprinkler 21 is located inside the absorption tower 17, so that the ammonia water solution can be uniformly sprayed in the absorption tower 17 through the sprinkler 21.
The working principle is as follows: when the device is used, the air compressor 3 is firstly opened, compressed air enters the absorption tower 17 through the first pipeline 6, then pressure regulation is carried out through the air pressure regulating valve 8 according to the pressure displayed on the pressure gauge 7, when the required pressure is regulated, the centrifugal pump 13 is started to pump the ammonia water stored in the ammonia water container 1 into the second pipeline 22, then the flow displayed on the flow meter 12 is observed, then the flow regulating valve 10 is regulated by rotating the movable handle 11, and further the flow of the ammonia water is regulated, so that the ammonia water can be atomized and sprayed out through the spray head 21, and the residual waste liquid after the ammonia water is used in the absorption tower 17 and the water generated during the reduction reaction flow into the waste liquid container 20; coal-fired flue gas enters the absorption tower 17 through the smoke inlet 19, solid small particles contained in the flue gas are filtered when the coal-fired flue gas passes through the first filter screen 18, ammonia water contained in the flue gas is adsorbed when the filtered flue gas passes through the second filter screen 16, and then the flue gas is discharged through the smoke outlet 15; after use, the centrifugal pump 13 is closed, then the check valve 9 is closed to prevent coal-fired flue gas from entering the ammonia water container 1 through the second pipe 22, and then the air compressor 3 is closed.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A flue gas denitration injection system by a coal-fired flue gas selective non-catalytic reduction method comprises an ammonia water container (1) and is characterized in that a first support (2) is fixedly connected to the outer wall of the top of the ammonia water container (1), an air compressor (3) is fixedly connected to the outer wall of the top of the first support (2), a first connecting disc (4) is arranged at the output end of the air compressor (3), a second connecting disc (5) is arranged on the outer wall of the top of the first connecting disc (4), the second connecting disc (5) is fixedly connected with the first connecting disc (4) through a screw rod, a first pipeline (6) is fixedly connected to the outer wall of the top of the second connecting disc (5), a pressure gauge (7) is arranged on one side of the first pipeline (6), an air pressure adjusting valve (8) is arranged on the outer wall of the first pipeline (6), an absorption tower (17) is fixedly connected to the outer wall of the top of, the top outer wall of the absorption tower (17) is provided with a smoke outlet (15), the smoke outlet (15) is located on one side of the first pipeline (6), the inner wall of the smoke outlet (15) is provided with a second filter screen (16), the bottom outer wall of one side of the absorption tower (17) is provided with a smoke inlet (19), the top outer wall of the ammonia water container (1) is fixedly connected with a second support (14), the second support (14) is located on one side of the first support (2), the top outer wall of the second support (14) is fixedly connected with a centrifugal pump (13), the output end of the centrifugal pump (13) is provided with a first connecting disc (4), the top outer wall of the first connecting disc (4) is provided with a second connecting disc (5), the top outer wall of the second connecting disc (5) is fixedly connected with a second pipeline (22), one side of the second pipeline (22) is provided with a flow meter (12), and a check valve (9) is arranged on the outer wall of the top of the second pipeline (22).
2. The selective non-catalytic reduction method flue gas denitration injection system for coal-fired flue gas as recited in claim 1, wherein the outer wall of the second pipeline (22) is provided with a flow regulating valve (10), and the flow regulating valve (10) is positioned above the flow meter (12).
3. The selective non-catalytic reduction method flue gas denitration injection system of coal-fired flue gas according to claim 1, wherein the check valve (9) and the flow control valve (10) are provided with movable handles (11) on the outer walls of one side.
4. The selective non-catalytic reduction flue gas denitration injection system for coal-fired flue gas as recited in claim 1, wherein the inner wall of the absorption tower (17) is provided with a first filter screen (18), and the first filter screen (18) is positioned above the flue gas inlet (19).
5. The selective non-catalytic reduction flue gas denitration injection system for coal-fired flue gas as recited in claim 1, wherein a waste liquid container (20) is provided at the bottom of the absorption tower (17), and the waste liquid container (20) is placed on the ground.
6. The system for the selective non-catalytic reduction of the flue gas from coal-fired flue gas denitration injection as claimed in claim 1, wherein a sprinkler head (21) is fixedly connected to one end of the first pipeline (6) far away from the air compressor (3), and the sprinkler head (21) is positioned inside the absorption tower (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358981.5U CN209885559U (en) | 2019-03-21 | 2019-03-21 | Flue gas denitration injection system for selective non-catalytic reduction method of coal-fired flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358981.5U CN209885559U (en) | 2019-03-21 | 2019-03-21 | Flue gas denitration injection system for selective non-catalytic reduction method of coal-fired flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209885559U true CN209885559U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920358981.5U Expired - Fee Related CN209885559U (en) | 2019-03-21 | 2019-03-21 | Flue gas denitration injection system for selective non-catalytic reduction method of coal-fired flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209885559U (en) |
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2019
- 2019-03-21 CN CN201920358981.5U patent/CN209885559U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |