CN103433163B - A kind of Double-fluid spray gun for denitration - Google Patents
A kind of Double-fluid spray gun for denitration Download PDFInfo
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- CN103433163B CN103433163B CN201310360836.8A CN201310360836A CN103433163B CN 103433163 B CN103433163 B CN 103433163B CN 201310360836 A CN201310360836 A CN 201310360836A CN 103433163 B CN103433163 B CN 103433163B
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- mixing device
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Abstract
The invention discloses a kind of Double-fluid spray gun for denitration, including Liqiud-gas mixing device, the gun barrel being connected with Liqiud-gas mixing device, in the gun barrel of gun barrel nozzle, be provided with nozzle；Liqiud-gas mixing device is provided with solution inlet port and compressed air inlet, and gun barrel is provided with protection gas import, and ammonia spirit storage tank is connected with solution inlet port by ammonia feed tube, and ammonia feed tube is provided with feed liquor regulation valve；Compressed air caisson is connected with compressed air inlet by the first air inlet pipe, and the first air inlet pipe is provided with the first air inlet adjustment valve；Compressed air caisson is connected with protection gas import by the second air inlet pipe; second air inlet pipe is provided with the second air inlet adjustment valve; the outer wall of gun barrel is provided with protection sleeve pipe; one end of protection sleeve pipe extends to gun barrel spout, is provided with the flow-guiding mouth of protruding gun barrel spout on the downside outer wall of the protection sleeve pipe of nearly gun barrel spout.The present invention has length in service life, the advantage that coal-burning boiler water-cooling wall liner will not be caused corrosion.
Description
Technical field
The present invention relates to a kind of Double-fluid spray gun for denitration of coal-burning boiler denitration.
Background technology
In denitration industry, the structure of the Double-fluid spray gun for denitration used at present is: include ammonia spirit storage tank, compressed air caisson, Liqiud-gas mixing device, and the gun barrel being connected with Liqiud-gas mixing device, in the gun barrel of gun barrel nozzle, it is arranged with nozzle；Offering solution inlet port and compressed air inlet on Liqiud-gas mixing device, offer protection gas import on gun barrel, ammonia spirit storage tank is connected with the solution inlet port of Liqiud-gas mixing device by ammonia feed tube, is provided with feed liquor regulation valve on ammonia feed tube；Compressed air caisson is connected with the compressed air inlet of Liqiud-gas mixing device by the first air inlet pipe, is provided with the first air inlet adjustment valve in the first air inlet pipe；Compressed air caisson is connected with the protection gas import of gun barrel by the second air inlet pipe, is provided with the second regulation valve in the second air inlet pipe.When actual installation, the spout of gun barrel need to put in high temperature coal boiler.The shortcoming of this Double-fluid spray gun for denitration is: gun barrel is short for service life under the high temperature conditions, and when ammonia spirit is after gun barrel spout sprays into coal-burning boiler, ammonia spirit in gun barrel nozzle residual easily occurs to hang palpus phenomenon, these occur the ammonia spirit hanging palpus phenomenon easily to flow to the water-cooling wall lining of high temperature coal boiler along the outer wall of this section of gun barrel being positioned at coal-burning boiler, thus water-cooling wall liner is caused corrosion, hidden danger has been buried in the safety in production for enterprise.
Summary of the invention
It is an object of the invention to provide length in a kind of service life, the water-cooling wall liner of coal-burning boiler will not be caused a kind of Double-fluid spray gun for denitration of corrosion.
For achieving the above object, present invention employs following technical scheme: described a kind of Double-fluid spray gun for denitration, including ammonia spirit storage tank, compressed air caisson, Liqiud-gas mixing device, and the gun barrel being connected with Liqiud-gas mixing device, be arranged with nozzle in the gun barrel of gun barrel nozzle；Offering solution inlet port and compressed air inlet on Liqiud-gas mixing device, offer protection gas import on gun barrel, ammonia spirit storage tank is connected with the solution inlet port of Liqiud-gas mixing device by ammonia feed tube, is provided with feed liquor regulation valve on ammonia feed tube；Compressed air caisson is connected with the compressed air inlet of Liqiud-gas mixing device by the first air inlet pipe, is provided with the first air inlet adjustment valve in the first air inlet pipe；Compressed air caisson is connected with the protection gas import of gun barrel by the second air inlet pipe; second air inlet pipe is provided with the second air inlet adjustment valve; outer wall at gun barrel is arranged with protection sleeve pipe; one end of protection sleeve pipe extends to gun barrel spout, is provided with the flow-guiding mouth of protruding gun barrel spout on the downside outer wall near the protection sleeve pipe of gun barrel spout.
Further, aforesaid a kind of Double-fluid spray gun for denitration, wherein: described flow-guiding mouth is curved is bent downwardly setting.
By the enforcement of technique scheme, the present invention has length in service life, the water-cooling wall liner of coal-burning boiler will not be caused the advantage that burn into production security is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Double-fluid spray gun for denitration of the present invention.
Fig. 2 is the installation site schematic diagram of a kind of Double-fluid spray gun for denitration shown in Fig. 1 and coal-burning boiler.
Fig. 3 is the enlarged diagram at the H position shown in Fig. 2.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 shows, described a kind of Double-fluid spray gun for denitration, including ammonia spirit storage tank 1, compressed air caisson 2, Liqiud-gas mixing device 3, and the gun barrel 4 being connected with Liqiud-gas mixing device 3, be arranged with nozzle 5 in the gun barrel 4 of gun barrel 4 nozzle；Liqiud-gas mixing device 3 offers solution inlet port and compressed air inlet; gun barrel 4 offers protection gas import; ammonia spirit storage tank 1 is connected by the solution inlet port of ammonia feed tube 6 with Liqiud-gas mixing device 3, is provided with feed liquor regulation valve 7 on ammonia feed tube 6；Compressed air caisson 2 is connected with the compressed air inlet of Liqiud-gas mixing device 3 by the first air inlet pipe 8, is provided with the first air inlet adjustment valve 9 in the first air inlet pipe 8；Compressed air caisson 2 is connected with the protection gas import of gun barrel 4 by the second air inlet pipe 10; second air inlet pipe 10 is provided with the second air inlet adjustment valve 11; outer wall at gun barrel 4 is arranged with protection sleeve pipe 12; one end of protection sleeve pipe 12 extends to gun barrel 4 spout, is provided with the flow-guiding mouth 13 of protruding gun barrel 4 spout on the downside outer wall near the protection sleeve pipe 12 of gun barrel 4 spout；In the present embodiment, described flow-guiding mouth 13 is curved is bent downwardly setting, so preferably the ammonia spirit remaining in gun barrel 4 nozzle can be carried out water conservancy diversion.When actual installation, will be equipped with the one end protecting the gun barrel 4 of the sleeve pipe 12 water-cooling wall liner 14 through coal-burning boiler 15, make the nearly gun barrel spout end of protection sleeve pipe 12, the spout of gun barrel 4, and flow-guiding mouth 13 is positioned at coal-burning boiler 15, so by protection sleeve pipe 12, gun barrel 4 can be protected, thus extend the service life of gun barrel 4, and by flow-guiding mouth 13, the ammonia spirit remaining in gun barrel 4 nozzle is guided in coal-burning boiler 15, avoid the ammonia spirit of residual to be back on the water-cooling wall liner 14 of coal-burning boiler 15 along the outer wall of this section of protection sleeve pipe 12 being positioned at coal-burning boiler 15, so that water-cooling wall liner 14 will not be caused corrosion by ammonia spirit, improve production security.
The operation principle of the present invention is as follows: first open the second air inlet adjustment valve 11; compressed air in compressed air caisson 2 is entered in gun barrel 4 from the protection gas import of gun barrel 4, makes compressed air form a layer compression air conservation layer at the inwall of gun barrel 4 and the inwall of nozzle 5；Open feed liquor regulation valve 7 and the first air inlet adjustment valve 9 the most simultaneously, ammonia spirit in ammonia spirit storage tank 1 is entered Liqiud-gas mixing device 3 from solution inlet port, compressed air in compressed air caisson 2 is entered Liqiud-gas mixing device 3 from compressed air inlet, through gun barrel 4 after making ammonia spirit uniformly mix in Liqiud-gas mixing device 3 with compressed air, nozzle 5 sprays in coal-burning boiler 15, owing to the inwall of gun barrel 4 and the inwall of nozzle 5 have the protection of compressed air protective layer, the inwall of the inwall of gun barrel 4 Yu nozzle 5 will not be caused corrosion by ammonia spirit, extend gun barrel 4 and the service life of nozzle 5 further；After ammonia spirit completes once to spray; remain in the guiding at flow-guiding mouth 13 of the ammonia spirit of gun barrel 4 nozzle downstream in coal-burning boiler 15; ammonia spirit will not flow on the water-cooling wall liner 14 of coal-burning boiler 15 along the outer wall of this section of protection sleeve pipe 12 being positioned at coal-burning boiler 15; thus avoid water-cooling wall liner 14 and corroded by ammonia spirit, improve production security.The present invention has length in service life, the water-cooling wall liner of coal-burning boiler will not be caused the advantage that burn into production security is high.
Claims (2)
1. a Double-fluid spray gun for denitration, including ammonia spirit storage tank, compressed air caisson, Liqiud-gas mixing device, and the gun barrel being connected with Liqiud-gas mixing device, is arranged with nozzle in the gun barrel of gun barrel nozzle；Offering solution inlet port and compressed air inlet on Liqiud-gas mixing device, offer protection gas import on gun barrel, ammonia spirit storage tank is connected with the solution inlet port of Liqiud-gas mixing device by ammonia feed tube, is provided with feed liquor regulation valve on ammonia feed tube；Compressed air caisson is connected with the compressed air inlet of Liqiud-gas mixing device by the first air inlet pipe, is provided with the first air inlet adjustment valve in the first air inlet pipe；Compressed air caisson is connected with the protection gas import of gun barrel by the second air inlet pipe; second air inlet pipe is provided with the second air inlet adjustment valve; it is characterized in that: the outer wall at gun barrel is arranged with protection sleeve pipe; one end of protection sleeve pipe extends to gun barrel spout, is provided with the flow-guiding mouth of protruding gun barrel spout on the downside outer wall near the protection sleeve pipe of gun barrel spout.
A kind of Double-fluid spray gun for denitration the most according to claim 1, it is characterised in that: described flow-guiding mouth is curved is bent downwardly setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360836.8A CN103433163B (en) | 2013-08-19 | 2013-08-19 | A kind of Double-fluid spray gun for denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360836.8A CN103433163B (en) | 2013-08-19 | 2013-08-19 | A kind of Double-fluid spray gun for denitration |
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| Publication Number | Publication Date |
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| CN103433163A CN103433163A (en) | 2013-12-11 |
| CN103433163B true CN103433163B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310360836.8A Active CN103433163B (en) | 2013-08-19 | 2013-08-19 | A kind of Double-fluid spray gun for denitration |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105107364B (en) * | 2015-09-15 | 2017-10-17 | 北京科大朗涤环保工程技术有限公司 | Suitable for the flue gas desulphurization system of concurrent spray semidry method |
| CN106268303B (en) * | 2016-09-13 | 2019-03-22 | 山东杰创环保科技有限公司 | A kind of kiln SCR denitration process and its special equipment |
| CN109114551B (en) * | 2018-07-16 | 2020-02-18 | 广东能强陶瓷有限公司 | Energy-saving kiln spray gun |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905201A (en) * | 2010-07-09 | 2010-12-08 | 中冶京诚工程技术有限公司 | Novel spraying nozzle without air-resistance and spray forming method thereof |
| CN202983929U (en) * | 2012-11-20 | 2013-06-12 | 浙江浙大海元环境科技有限公司 | Spray gun device for selective non-catalytic reduction (SNCR) denitration |
| CN203459196U (en) * | 2013-08-19 | 2014-03-05 | 江苏新中环保股份有限公司 | Denitration two-fluid spray gun |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062491A (en) * | 2001-08-29 | 2003-03-04 | Japan Aviation Electronics Industry Ltd | Minute-amount spray-application apparatus for high- viscosity liquid |
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- 2013-08-19 CN CN201310360836.8A patent/CN103433163B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905201A (en) * | 2010-07-09 | 2010-12-08 | 中冶京诚工程技术有限公司 | Novel spraying nozzle without air-resistance and spray forming method thereof |
| CN202983929U (en) * | 2012-11-20 | 2013-06-12 | 浙江浙大海元环境科技有限公司 | Spray gun device for selective non-catalytic reduction (SNCR) denitration |
| CN203459196U (en) * | 2013-08-19 | 2014-03-05 | 江苏新中环保股份有限公司 | Denitration two-fluid spray gun |
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| CN103433163A (en) | 2013-12-11 |
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Effective date of registration: 20190108 Address after: 215600 Donglai Jiangqiao, Yangshe Town, Zhangjiagang City, Jiangsu Province (in Zhangjiagang East China Marine Valve Manufacturing Co., Ltd.) Patentee after: Jiangsu Xinren Environmental Protection Technology Co., Ltd. Address before: 215600 Jiangsu Xinzhong Environmental Protection Co., Ltd. Zhangjiagang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: Jiangsu New Environmental Co., Ltd. |
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