CN204656318U - A kind of boiler flue gas denitration system - Google Patents
A kind of boiler flue gas denitration system Download PDFInfo
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- CN204656318U CN204656318U CN201520195398.9U CN201520195398U CN204656318U CN 204656318 U CN204656318 U CN 204656318U CN 201520195398 U CN201520195398 U CN 201520195398U CN 204656318 U CN204656318 U CN 204656318U
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- module
- ammonia
- water storage
- flue gas
- storage element
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Abstract
The utility model relates to a kind of boiler flue gas denitration system, comprises water storage element, ammoniacal liquor storage element, dilutes pressurised metered unit, jet atomization unit and control unit.Jet atomization unit is provided with Voltage stabilizing module and jet atomization module, and jet atomization module is provided with spray gun, and Voltage stabilizing module is connected to spray gun.Ammoniacal liquor storage element is provided with and unloads ammonia module and tank used for storing ammonia, and dilute pressurised metered unit and be provided with mixing module, mixing storage tank, compression module and metering module, water storage element is provided with dilution water storage tank and clear water storage tank.Outlet and the dilution water storage tank of tank used for storing ammonia are connected to mixing module, and mixing module outlet is connected to jet atomization module through mixing storage tank, compression module and metering module successively.The utility model is absorbed ammonia by dilution water, reduces pressure in tank used for storing ammonia fast, ensure that the normal operation of system, optimize denitrating flue gas process, improve denitration efficiency.
Description
Technical field
The utility model belongs to industrial smoke treatment facility technical field, relates to a kind of denitration device, is specifically related to a kind of boiler flue gas denitration system.
Background technology
Flue gas is one of predominant emissions of steam power plant, is produced by combustible burning in burner (i.e. boiler).Owing to usually containing a large amount of nitrogen oxide NO in flue gas
xas NO, if these nitrogen oxide are directly discharged in air, meeting contaminated air, forms photochemical fog and acid rain, is detrimental to health, and therefore flue gas has to pass through denitrogenation (i.e. denitration) process before discharge.
Current gas denitrifying technology mainly contains two kinds: SCR (SCR) technology and SNCR denitration (SNCR) technology.SNCR (SNCR) denitration under the prerequisite not using catalyst, evenly sprays into containing amino reducing agent the region that boiler temperature scope is 800 ~ 1200 DEG C, optionally the NOx in flue gas is reduced to N
2and H
2o, to reach the object reducing discharging nitrogen oxide.The denitration efficiency of SNCR denitration process application on CFBB was between 30%-50% in the past.Publication number is that the application for a patent for invention of CN 103349898A discloses " a kind of SNCR denitrification apparatus and utilize this device to carry out the method for denitration; device comprises Benitration reactor, fuel injection control system, temperature control equipment, injection of reducing agent injection device, Benitration reactor exhaust pass, Benitration reactor inlet flue duct, fuel system controller, and fuel injection control system, temperature control equipment, injection of reducing agent injection device, Benitration reactor exhaust pass, Benitration reactor inlet flue duct are installed on Benitration reactor.Fuel injection control system is connected with temperature control equipment by fuel system controller.But the denitration effect of this patent application still can not meet the demands.
Utility model content
The purpose of this utility model is to provide a kind of boiler flue gas denitration system, to optimize denitrating flue gas process, improves denitration effect.
The technical solution of the utility model is: boiler flue gas denitration system, comprises jet atomization unit, and jet atomization unit is provided with Voltage stabilizing module and jet atomization module, and jet atomization module is provided with spray gun, and Voltage stabilizing module is connected to spray gun.Voltage stabilizing module is connected with pneumatic plant.Denitrating system is provided with ammoniacal liquor storage element, dilutes pressurised metered unit, water storage element and control unit, ammoniacal liquor storage element is provided with and unloads ammonia module and tank used for storing ammonia, dilute pressurised metered unit and be provided with mixing module, mixing storage tank, compression module and metering module, water storage element is provided with dilution water storage tank.Unload the ammonia entrance of ammonia model calling to tank used for storing ammonia, outlet and the dilution water outlet of tank used for storing ammonia are connected to mixing module, and mixing module outlet is connected to jet atomization module through mixing storage tank, compression module and metering module successively.Control unit respectively with jet atomization unit, ammoniacal liquor storage element, dilute pressurised metered unit and water storage element communicates to connect.
Unload ammonia module to comprise and unload ammonia pump, supporting pipeline and valve, tank used for storing ammonia is provided with liquid level gauge, unloads ammonia pump and is provided with the urgent flushing device of clear water and eye syringe.Water storage element is provided with flushing device and supporting pipeline, and pipeline is provided with valve, and dilution water storage tank is provided with liquid level gauge.Electric control valve, electromagnetic flowmeter and pressure gauge are equipped with in jet atomization unit water route.Spray gun is connected with ammoniacal liquor and compressed air line by flexible pipe.Control unit is provided with host computer, PLC, frequency-variable module and communication module.Tank used for storing ammonia is provided with hermetically-sealed construction, and the top of tank used for storing ammonia is provided with air pressure monitoring device and ammonia volatilization treating apparatus.Dilute pressurised metered unit and be provided with wash module, water storage element is provided with clear water storage tank, and clear water storage tank is connected to the flushing entrance of mixing module and compression module through wash module.
The utility model by water storage element, ammoniacal liquor storage element, dilute effective operation that pressurised metered unit, jet atomization unit and control unit achieve boiler flue gas denitration system, optimize denitrating flue gas process, improve denitration effect.Dilute pressurised metered unit to be absorbed ammonia by dilution water, reduce pressure in tank used for storing ammonia fast, ensure that the normal operation of system.Tank used for storing ammonia adopts hermetically-sealed construction, effectively prevents ammonia from revealing, avoids polluting surrounding environment.The safety that air pressure monitoring device and ammonia volatilization treating apparatus ensure that storage tank is set above tank used for storing ammonia.The spray gun of jet atomization unit is connected with ammoniacal liquor and compressed air line with flexible pipe, is arranged in boiler rational position place, comprehensive to NO
xcatch, ensure that denitration efficiency.The warning device of control unit ensure that denitrating system safely and steadily runs.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the utility model boiler flue gas denitration system;
Fig. 2 is the process chart of the utility model boiler flue gas denitration system;
Wherein:
1-ammoniacal liquor storage element, 2-unload ammonia module, 3-tank used for storing ammonia, 4-control unit, 5-jet atomization unit, 6-Voltage stabilizing module, 7-jet atomization module, 8-boiler, 9-water storage element, 10-dilution water storage tank, 11-mixing module, 12-mixing storage tank, 13-wash module, 14-compression module, 15-metering module, 16-dilute pressurised metered unit, 17-pneumatic plant, 18-clear water storage tank.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail.The utility model protection domain is not limited to embodiment, and those skilled in the art make the scope that any change also belongs to the utility model protection in the scope that claim limits.
The utility model boiler flue gas denitration system as shown in Figure 1 and Figure 2, comprises water storage element 9, ammoniacal liquor storage element 1, dilutes pressurised metered unit 16, jet atomization unit 5 and control unit 4.Jet atomization unit 5 is provided with Voltage stabilizing module 6, jet atomization module 7.Jet atomization module comprises spray gun and instrument valve on the water route that is connected with spray gun, and spray gun is arranged in the rational position of boiler.Voltage stabilizing module is positioned in the gas circuit that is connected with spray gun, and pneumatic plant 17 is connected to spray gun by Voltage stabilizing module.Ammoniacal liquor storage element is provided with and unloads ammonia module 2 and tank used for storing ammonia 3.Dilute pressurised metered unit and be provided with mixing module 11, mixing storage tank 12, wash module 13, compression module 14 and metering module 15, water storage element is provided with dilution water storage tank 10 and clear water storage tank.Unload the ammonia entrance of ammonia model calling to tank used for storing ammonia, outlet and the dilution water outlet of tank used for storing ammonia are connected to mixing module, and mixing module outlet is connected to jet atomization module through mixing storage tank, compression module and metering module successively.Clear water storage tank is connected to the flushing entrance of mixing module and compression module through wash module 13, for rinsing pipeline before blowing out or maintenance, preventing ammoniacal liquor from revealing and being detrimental to health.Control unit remote controlled jet atomization unit, ammoniacal liquor storage element, dilute pressurised metered unit and water storage element.
Unload ammonia module 2 to comprise and unload ammonia pump, supporting pipeline and pressure transmitter, pipeline is provided with valve.Tank used for storing ammonia 3 is provided with liquid level gauge, unloads ammonia pump and is provided with the urgent flushing device of clear water.Water storage element 9 is provided with flushing device and supporting pipeline, and pipeline is provided with valve, and dilution water storage tank 10 is provided with liquid level gauge.Electric control valve, electromagnetic flowmeter and pressure gauge are equipped with in jet atomization unit 5 water route, and jet atomization module 7 is provided with HBCY-SE spray gun.Control unit 4 is provided with host computer, PLC, frequency-variable module and communication module.
Ammoniacal liquor memory cell is arranged in steel construction factory canopy, and tank used for storing ammonia volume can ensure that equipment runs 7 days continuously.Tank used for storing ammonia is provided with liquid level gauge, pressure transmitter.Ammoniacal liquor tank car ships the ammoniacal liquor of mass concentration 20%, squeezes in tank used for storing ammonia through unloading ammonia pump.Unload ammonia pump place and be provided with the urgent flusher of clear water, for unload the ammoniacal liquor revealed in ammonia process carry out flushing process.Tank used for storing ammonia adopts hermetically-sealed construction, prevents ammonia from revealing and pollutes surrounding environment.The safety of air pressure monitoring device and ammonia volatilization treating apparatus guarantee storage tank is set above ammonia storage tank.
In water storage element, the demineralized water of dilution water storage tank is used for the dilution to ammonia spirit in system operation, ensures that spray gun has enough momentum of impinging jet, reaches better denitration efficiency.The ammonia of absorbing ammonia water storage tank volatilization is also responsible for by dilution water storage tank simultaneously, because ammoniacal liquor volatilization causes pressure in tank used for storing ammonia to be elevated to preset value, safety valve in ammonia suction line is opened, by dilution water, ammonia is absorbed, pressure in quick reduction tank used for storing ammonia, guarantee system is normally run.Clear water storage tank is provided with ball-cock assembly to ensure supplying in time of water consumption.
Dilute pressurised metered unit 20% ammoniacal liquor is diluted to technological requirement concentration at mixing module, be transported to eject position through compression module.When system stops using maintenance, wash module is rinsed pipeline, utilizes the opening and closing of electrically operated valve to come the flow direction of control medium and the pipeline of the flow direction, prevents the ammonia spirit remained in pipeline from overflowing and impacts personnel and environment.Flowmeter is monitored the flow of medium and is transferred data to control unit, regulates the frequency of pump and electric control valve to carry out adjust flux by frequency converter.
In jet atomization unit, reducing agent is atomized by the atomizer of spray gun front end, forms the granule of about 30-70 μm, sprays into boiler, with NO
xthere is reduction reaction.The monitoring adjusting devices such as electric control valve, electromagnetic flowmeter and Pressure gauge are equipped with in water route, ensure Real-Time Monitoring and the adjustability of discharge rate, gas circuit are installed gas circuit Voltage stabilizing module and ensure that spray gun atomizing effect.
Control unit controls, regulates the operation of each equipment, realizes NO_x Reduction by Effective.Control mode has on-the-spot control automatically, on-site manual controls, middle control controls and middle control Non-follow control automatically, facilitates the operation under various operating mode.Boiler flue gas denitration system is provided with liquid level warning, flow alarm function, frequency conversion fault alarm and pressure alarm, and the system of ensure that can safely and steadily run.
Claims (8)
1. a boiler flue gas denitration system, comprise jet atomization unit (5), described jet atomization unit is provided with Voltage stabilizing module (6) and jet atomization module (7), described jet atomization module is provided with spray gun, Voltage stabilizing module is connected to spray gun, described Voltage stabilizing module is connected with pneumatic plant (17), it is characterized in that: described denitrating system is provided with ammoniacal liquor storage element (1), dilute pressurised metered unit (16), water storage element (9) and control unit (4), described ammoniacal liquor storage element is provided with and unloads ammonia module (2) and tank used for storing ammonia (3), the pressurised metered unit of described dilution is provided with mixing module (11), mixing storage tank (12), compression module (14) and metering module (15), described water storage element is provided with dilution water storage tank (10), describedly unload the ammonia entrance of ammonia model calling to tank used for storing ammonia, outlet and the dilution water outlet of described tank used for storing ammonia are connected to mixing module, and described mixing module outlet is connected to jet atomization module through mixing storage tank, compression module and metering module successively, described control unit respectively with jet atomization unit, ammoniacal liquor storage element, dilute pressurised metered unit and water storage element communicates to connect.
2. boiler flue gas denitration system according to claim 1, it is characterized in that: described in unload ammonia module (2) and comprise and unload ammonia pump, supporting pipeline and valve, described tank used for storing ammonia (3) is provided with liquid level gauge, described in unload ammonia pump and be provided with the urgent flushing device of clear water and eye syringe.
3. boiler flue gas denitration system according to claim 1, is characterized in that: described water storage element (9) is provided with flushing device and supporting pipeline, and described pipeline is provided with valve; Described dilution water storage tank (10) is provided with liquid level gauge.
4. boiler flue gas denitration system according to claim 1, is characterized in that: electric control valve, electromagnetic flowmeter and pressure gauge are equipped with in described jet atomization unit (5) water route.
5. boiler flue gas denitration system according to claim 4, is characterized in that: described spray gun is connected with ammoniacal liquor and compressed air line by flexible pipe.
6. boiler flue gas denitration system according to claim 1, is characterized in that: described control unit (4) is provided with host computer, PLC, frequency-variable module and communication module.
7. boiler flue gas denitration system according to claim 1, it is characterized in that: described tank used for storing ammonia (3) is provided with hermetically-sealed construction, the top of described tank used for storing ammonia (3) is provided with air pressure monitoring device and ammonia volatilization treating apparatus.
8. boiler flue gas denitration system according to claim 1, it is characterized in that: the pressurised metered unit of described dilution (16) is provided with wash module (13), described water storage element (9) is provided with clear water storage tank (18), and described clear water storage tank is connected to the flushing entrance of mixing module and compression module through wash module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520195398.9U CN204656318U (en) | 2015-04-02 | 2015-04-02 | A kind of boiler flue gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520195398.9U CN204656318U (en) | 2015-04-02 | 2015-04-02 | A kind of boiler flue gas denitration system |
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| CN204656318U true CN204656318U (en) | 2015-09-23 |
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| CN201520195398.9U Expired - Fee Related CN204656318U (en) | 2015-04-02 | 2015-04-02 | A kind of boiler flue gas denitration system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169919A (en) * | 2015-10-09 | 2015-12-23 | 索通发展股份有限公司 | Flue gas denitration device for carbon pot calciner and denitration technology of flue gas denitration device |
| CN106943758A (en) * | 2017-04-28 | 2017-07-14 | 山东神华山大能源环境有限公司 | A kind of device and method that ammoniacal liquor is evaporated and diluted simultaneously with boiler hot air |
| CN109513348A (en) * | 2018-12-20 | 2019-03-26 | 东方电气集团东方锅炉股份有限公司 | Combustion engine waste heat boiler SCR denitrating flue gas reducing agent spraying controlling system and control method |
| CN111672305A (en) * | 2020-06-22 | 2020-09-18 | 扬州中康环保设备有限公司 | Novel ammonia water storage system adopting non-catalytic reduction method |
| CN115006980A (en) * | 2022-05-20 | 2022-09-06 | 广东五洲药业有限公司 | SNCR flue gas denitration system |
-
2015
- 2015-04-02 CN CN201520195398.9U patent/CN204656318U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169919A (en) * | 2015-10-09 | 2015-12-23 | 索通发展股份有限公司 | Flue gas denitration device for carbon pot calciner and denitration technology of flue gas denitration device |
| CN106943758A (en) * | 2017-04-28 | 2017-07-14 | 山东神华山大能源环境有限公司 | A kind of device and method that ammoniacal liquor is evaporated and diluted simultaneously with boiler hot air |
| CN109513348A (en) * | 2018-12-20 | 2019-03-26 | 东方电气集团东方锅炉股份有限公司 | Combustion engine waste heat boiler SCR denitrating flue gas reducing agent spraying controlling system and control method |
| CN111672305A (en) * | 2020-06-22 | 2020-09-18 | 扬州中康环保设备有限公司 | Novel ammonia water storage system adopting non-catalytic reduction method |
| CN115006980A (en) * | 2022-05-20 | 2022-09-06 | 广东五洲药业有限公司 | SNCR flue gas denitration system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Pang Xiaojie Inventor after: Wang Xiaoling Inventor before: Pang Xiaojie Inventor before: Wang Xiaoling |
|
| COR | Change of bibliographic data | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 071023 Hebei City, Baoding, North Second Ring Road, University Science Park, No. 5, building 6, layer 601, No. 5699 Patentee after: Hebei Chengyi Environmental Engineering Co., Ltd. Address before: 071023 Hebei Province, Open University of science and Technology Park, Baoding, building No. 5, No. 601 Patentee before: HEBEI CHENGYU SPRAY TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20190402 |