CN210385498U - Ammonia spraying grid - Google Patents
Ammonia spraying grid Download PDFInfo
- Publication number
- CN210385498U CN210385498U CN201921118755.6U CN201921118755U CN210385498U CN 210385498 U CN210385498 U CN 210385498U CN 201921118755 U CN201921118755 U CN 201921118755U CN 210385498 U CN210385498 U CN 210385498U
- Authority
- CN
- China
- Prior art keywords
- ammonia
- flue gas
- flue
- control system
- ammonia injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000005507 spraying Methods 0.000 title abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003546 flue gas Substances 0.000 claims abstract description 43
- 230000001105 regulatory Effects 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 239000000779 smoke Substances 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910002089 NOx Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052813 nitrogen oxide Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses an ammonia spraying grid, which comprises an ammonia spraying main pipe and an ammonia spraying branch pipe, wherein a plurality of nozzles are arranged on the ammonia spraying branch pipe, a plurality of ammonia spraying branch pipes are distributed in a flue, and the liquid spraying of the nozzles is more uniform; in addition, the device also comprises a flue gas flow detector, a control system and an opening regulating valve, wherein the opening regulating valve is arranged on the ammonia spraying main pipe, the flue gas flow detector detects the content of the flue gas in the flue and feeds the content of the flue gas back to the control system to regulate the opening of the opening regulating valve, and the ammonia spraying amount can be automatically regulated.
Description
Technical Field
The utility model relates to a chemical industry equips technical field, particularly, relates to an ammonia injection grid.
Background
A large amount of harmful substances are generated in the coal combustion process, the problem of NOx pollution generated by coal burning in the thermal power generation industry is widely concerned by various social circles, a serious challenge is brought to stable and efficient operation of a denitration device for comprehensively realizing ultralow emission reconstruction of a coal-fired unit, and the efficient operation of an ammonia injection grid is a key point and directly relates to the problems of NOx removal efficiency of a denitration system, ammonia escape rate, catalyst service life, blockage of an air preheater and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent.
The utility model provides a pair of ammonia injection grid can the automatically regulated ammonia injection volume.
In view of this, the utility model provides an ammonia injection grid can the automatically regulated ammonia volume of spouting in the flue, a serial communication port, including the nozzle, spout ammonia branch pipe, spout ammonia trunk, flue gas flow detector, flowmeter, aperture governing valve and control system, the nozzle is installed spout on the ammonia branch pipe, spout ammonia branch pipe and set up in the flue, flue gas flow detector is used for detecting the content of flue gas in the flue, spout ammonia branch pipe and connect in spout the end of ammonia trunk, be connected with flowmeter and aperture governing valve on spouting the ammonia trunk, control system's input with flue gas flow detector electricity is connected, control system's output with aperture governing valve electricity is connected.
Further, still including the support, the both ends and the flue fixed connection of support, be fixed with many on the support spout ammonia branch pipe, many it is in to spout ammonia branch pipe evenly distributed in the flue, it is mutually perpendicular with flue gas flow direction to spout ammonia branch pipe, the injection direction of nozzle with flue gas flow direction is the same.
Furthermore, every the both ends shutoff of spouting ammonia branch pipe, it is provided with a plurality of nozzles to spout the interval on the ammonia branch pipe, the material of nozzle is pottery.
The smoke guiding pipe is arranged at the upstream of the ammonia spraying branch pipe, the tail end of the smoke guiding pipe extends into the middle of the flue, and the starting end of the smoke guiding pipe is connected with the smoke detection interface of the smoke flow detector in a sealing mode.
Further, flue gas flow detector is pressure sensor for flue gas pressure in the monitoring flue and with flue gas pressure conversion for signal transmission give control system, control system converts the signal of telecommunication of received representative flue gas pressure into control the aperture signal transmission of aperture regulating valve aperture arrives the aperture governing valve, the aperture is adjusted according to received aperture signal and is adjusted the aperture.
Further, the opening degree regulating valve comprises an actuator and an electromagnetic flow regulating valve, and the actuator is used for receiving the opening degree signal from the control system and regulating the opening degree of the electromagnetic flow regulating valve.
Further, the control system is a DCS system or a PLC control system.
The technical effects of the utility model reside in that: the utility model provides an ammonia spraying grid, which comprises an ammonia spraying main pipe and an ammonia spraying branch pipe, wherein a plurality of nozzles are arranged on the ammonia spraying branch pipe, a plurality of ammonia spraying branch pipes are distributed in a flue, and the liquid spraying of the nozzles is more uniform; in addition, the device also comprises a flue gas flow detector, a control system and an opening regulating valve, wherein the opening regulating valve is arranged on the ammonia spraying main pipe, the flue gas flow detector detects the content of the flue gas in the flue and feeds the content of the flue gas back to the control system to regulate the opening of the opening regulating valve, and the ammonia spraying amount can be automatically regulated.
Drawings
FIG. 1 is a front view of an ammonia injection grid according to the present invention;
FIG. 2 is a cross-sectional view A-A of an ammonia injection grid according to the present invention;
wherein, 1-a nozzle; 2-ammonia injection branch pipe; 3-ammonia spraying dry pipe; 4-a flue gas flow detector; 5-a flow meter; 6-opening degree regulating valve; 7-a scaffold; 8-smoke guide pipe; 9-flue.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
The utility model provides a pair of spout ammonia grid, the ammonia volume of spouting in can the automatically regulated flue, it is shown by figure 1 and figure 2, including nozzle 1, spout ammonia branch pipe 2, spout ammonia main 3, flue gas flow detector 4, flowmeter 5, aperture governing valve 6 and control system, nozzle 1 is installed on spouting ammonia branch pipe 2, spout ammonia branch pipe 2 and set up in flue 9, flue gas flow detector 4 is used for detecting the content of flue gas in the flue 9, spout ammonia branch pipe 2 and connect the end at spouting ammonia main 3, be connected with flowmeter 5 and aperture governing valve 6 on spouting ammonia main 3, control system's input is connected with 4 electricity of flue gas flow detector, control system's output is connected with aperture governing valve 6 electricity. The ammonia water sprayed out from the nozzle is used for reacting with the nitrogen oxide in the flue gas.
The utility model provides a pair of ammonia injection grid, by shown in figure 1 and figure 2, still including support 7, support 7's both ends and flue 9 fixed connection are fixed with many ammonia injection branch pipes 2 on support 7, specifically, adopt the U-shaped bolt to fix ammonia injection branch pipe on support 7, easy dismounting. A plurality of ammonia spraying branch pipes 2 are uniformly distributed in a flue 9, the ammonia spraying branch pipes 2 are perpendicular to the flow direction of flue gas, the spraying direction of a nozzle 1 is the same as the flow direction of the flue gas, and compared with reverse spraying of the nozzle 1, the spraying direction of the nozzle 1 is the same as the flow direction of the flue gas, so that the phenomenon that the pressure in the flue 9 is changed too much due to the spraying of the nozzle 1, the abnormal disturbance of a flue gas flow detector 4 is caused, and the damage to the flue gas flow detector 4 is avoided.
The utility model provides a pair of spout ammonia grid, it is shown by figure 1 and figure 2, every spouts the both ends shutoff of ammonia branch pipe 2, spouts the interval on ammonia branch pipe 2 and is provided with a plurality of nozzles 1, and the material of nozzle 1 is pottery, can make to spray more evenly, and ceramic material is corrosion-resistant in addition, and control system is DCS system or PLC control system.
The ammonia injection grid provided by the utility model is shown in figures 1 and 2, and also comprises a smoke guiding pipe 8, wherein the smoke guiding pipe 8 is arranged at the upstream of the ammonia injection branch pipe 2, so that the influence of the liquid injection of the nozzle can be avoided; the tail end of the smoke guiding pipe 8 extends into the middle part of the flue 9, and the starting end of the smoke guiding pipe 8 is hermetically connected with the smoke detection interface of the smoke flow detector 4.
The utility model provides a pair of ammonia injection grid, flue gas flow detector 4 are pressure sensor for the flue gas pressure in the monitoring flue 9 converts flue gas pressure into the signal of telecommunication for control system, and control system converts the signal of telecommunication of received representative flue gas pressure into the aperture signalling of 6 apertures of control aperture governing valve 6, and aperture governing valve 6 adjusts the aperture according to received aperture signal. The opening degree regulating valve 6 comprises an actuator and an electromagnetic flow regulating valve, wherein the actuator is used for receiving an opening degree signal from the control system and regulating the opening degree of the electromagnetic flow regulating valve.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (7)
1. The utility model provides an ammonia injection grid, can the automatically regulated spout ammonia volume in the flue, its characterized in that, include the nozzle, spout ammonia branch pipe, spout ammonia trunk, flue gas flow detector, flowmeter, aperture governing valve and control system, the nozzle is installed spout on the ammonia branch pipe, spout ammonia branch pipe setting in the flue, flue gas flow detector is used for detecting the content of flue gas in the flue, it connects to spout ammonia branch pipe spout the end of ammonia trunk, be connected with flowmeter and aperture governing valve on spouting the ammonia trunk, control system's input with flue gas flow detector electricity is connected, control system's output with aperture governing valve electricity is connected.
2. The ammonia injection grid according to claim 1, further comprising a support, wherein two ends of the support are fixedly connected with a flue, a plurality of ammonia injection branch pipes are fixed on the support, the plurality of ammonia injection branch pipes are uniformly distributed in the flue, the ammonia injection branch pipes are perpendicular to the flow direction of flue gas, and the injection direction of the nozzles is the same as the flow direction of flue gas.
3. The ammonia injection grid according to claim 2, wherein both ends of each ammonia injection branch pipe are blocked, a plurality of nozzles are arranged on the ammonia injection branch pipes at intervals, and the nozzles are made of ceramic.
4. The ammonia injection grid according to claim 1, further comprising a smoke guiding pipe, wherein the smoke guiding pipe is arranged at the upstream of the ammonia injection branch pipe, the tail end of the smoke guiding pipe extends into the middle of the flue, and the starting end of the smoke guiding pipe is hermetically connected with the smoke detection interface of the smoke flow detector.
5. The ammonia injection grid according to claim 1, wherein the flue gas flow detector is a pressure sensor for monitoring the flue gas pressure in the flue and converting the flue gas pressure into an electric signal to be transmitted to the control system, the control system converts the received electric signal representing the flue gas pressure into an opening signal for controlling the opening of the opening regulating valve, and transmits the opening signal to the opening regulating valve, and the opening regulating valve regulates the opening according to the received opening signal.
6. The ammonia injection grid according to claim 5, wherein the opening degree regulating valve comprises an actuator and an electromagnetic flow regulating valve, and the actuator is used for receiving the opening degree signal from the control system and regulating the opening degree of the electromagnetic flow regulating valve.
7. The ammonia injection grid according to claim 1, wherein the control system is a DCS system or a PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118755.6U CN210385498U (en) | 2019-07-16 | 2019-07-16 | Ammonia spraying grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118755.6U CN210385498U (en) | 2019-07-16 | 2019-07-16 | Ammonia spraying grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210385498U true CN210385498U (en) | 2020-04-24 |
Family
ID=70355000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921118755.6U Active CN210385498U (en) | 2019-07-16 | 2019-07-16 | Ammonia spraying grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210385498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750715A (en) * | 2021-08-12 | 2021-12-07 | 广东海洋大学 | Electromechanical engineering workshop environmental protection dust collector |
-
2019
- 2019-07-16 CN CN201921118755.6U patent/CN210385498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750715A (en) * | 2021-08-12 | 2021-12-07 | 广东海洋大学 | Electromechanical engineering workshop environmental protection dust collector |
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| GR01 | Patent grant |