CN211359251U - Jet-suction type atomizing spray gun - Google Patents

Jet-suction type atomizing spray gun Download PDF

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Publication number
CN211359251U
CN211359251U CN201922284852.9U CN201922284852U CN211359251U CN 211359251 U CN211359251 U CN 211359251U CN 201922284852 U CN201922284852 U CN 201922284852U CN 211359251 U CN211359251 U CN 211359251U
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China
Prior art keywords
pipe
reducing agent
channel
jet
pipe joint
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CN201922284852.9U
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Chinese (zh)
Inventor
张连华
张晖
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Zhongjuxin Ocean Engineering Equipment Co ltd
Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
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Zhongjuxin Ocean Engineering Equipment Co ltd
Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
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Priority to CN201922284852.9U priority Critical patent/CN211359251U/en
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Abstract

The utility model relates to an injection type atomizing spray gun, which comprises a gun body, an injection pipe joint, an injection pipe and an aerial fog dispersing conduit. The gun body and the injection pipe joint are respectively internally provided with a high-pressure gas channel and a reducing agent channel, the inlet of the high-pressure gas channel in the gun body is connected with an external high-pressure gas pipeline, and the inlet of the reducing agent channel is connected with an external reducing agent pipeline; one end of the aerial fog dispersing conduit is provided with an aerial fog spraying port, the other end of the aerial fog dispersing conduit is provided with a threaded interface, a pipe hole of the aerial fog dispersing conduit consists of a section of large-diameter cylindrical hole, a section of small-diameter cylindrical hole and a horn transition hole between the two holes, one end of the injection pipe joint is hermetically connected to the gun body, the other end of the injection pipe joint is connected to the threaded interface of the aerial fog dispersing conduit, and a high-pressure gas channel and a reducing agent channel in the gun body and the injection pipe joint are communicated; the jet pipe is fixedly connected with one end of the jet pipe connector and forms a jet-suction structure with the pipe wall of the aerosol dispersion guide pipe. The utility model has the advantages of energy saving, reducing agent saving and high NOx removal rate.

Description

Jet-suction type atomizing spray gun
Technical Field
The utility model relates to a spray gun especially relates to a carry out penetrating of denitration and inhale formula atomizing spray gun to gas industrial furnace kiln flue gas, belongs to denitration device technical field.
Background
The flue gas of a gas industrial furnace contains a large amount of nitrogen oxides, and a non-catalytic reduction denitration technology (SNCR) is a mature NOx removal treatment technology, and a reducing agent (ammonia water is diluted into diluted ammonia water with a certain proportion) is sprayed into the flue gas containing NOx by a spray gun within a temperature range of 850-1150 ℃, so that reduction reaction is carried out to generate nitrogen and water. In the denitration process, the spray gun is used as a main operation tool and has a key effect on the utilization rate of the reducing agent, the atomization effect of the gas-liquid two-phase flow, the denitration efficiency and the like. At present, the domestic gas industrial furnace flue gas denitration spray gun is designed and manufactured by adopting the working principle of gas-liquid two-phase flow high-pressure injection, firstly, high-pressure gas and a high-pressure reducing agent are mixed in a gun body, and then, the mixture is sprayed out from the spray gun head for atomization, so that firstly, the energy loss in the mixing process is realized, secondly, the consumption of the reducing agent is high, the denitration efficiency is low, thirdly, the spray gun is more in configuration, and the manufacturing cost is high; meanwhile, in the process of removing nitrogen oxides from flue gas of a gas industrial furnace, certain requirements are placed on the spraying state of a reducing agent, namely the diameter of a small liquid drop after atomization can not be too small or too large, the small liquid drop cannot be sufficiently mixed with the flue gas due to insufficient kinetic energy, the large liquid drop cannot be sufficiently reacted with the flue gas, so that the utilization rate is low, and the traditional spray gun cannot accurately control the atomizing state and the required amount of the reducing agent. Therefore, it is a necessary means to solve the above problems to design a new injection-suction type spray gun.
Disclosure of Invention
In order to optimize the spray gun structure, change spray gun atomizing mode, the utility model provides a penetrate and inhale formula atomizing spray gun, it inhales the reductant through the power of high velocity air flow and directly atomizes in the spray gun, realizes that the spray gun configuration is few, the energy saving, saves reductant, the high purpose of NOx desorption rate.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a jet-suction type atomizing spray gun comprises a gun body, a jet pipe joint, a jet pipe and an aerosol dispersion guide pipe, wherein a high-pressure gas channel and a reducing agent channel are arranged in the gun body and the jet pipe joint, an inlet of the high-pressure gas channel is connected with an external high-pressure gas pipeline, and an inlet of the reducing agent channel is connected with an external reducing agent pipeline; the one end of aerial fog divergence pipe is equipped with the hickey, and the other end is equipped with aerial fog blowout mouth, its characterized in that:
one end of the jet pipe joint is hermetically connected with the gun body, and the other end of the jet pipe joint is hermetically connected with the threaded interface of the aerosol divergence conduit; the injection pipe is fixedly connected to the end surface of the injection pipe joint; the high-pressure gas channel in the gun body is communicated with the pipe cavity of the gas fog dispersing guide pipe through the injection pipe joint and the high-pressure gas channel in the injection pipe, and the reducing agent channel in the gun body is communicated with the pipe cavity of the gas fog dispersing guide pipe through the reducing agent channel in the injection pipe joint; the pipe cavity of pipe is dispersed to aerial fog comprises one section major diameter cylinder hole and one section minor diameter cylinder hole and the loudspeaker transition hole between two holes, and aerial fog is dispersed pipe one end threaded interface sets up in the major diameter cylinder hole, the aerial fog blowout mouth sets up minor diameter cylinder hole end, the jet orifice of penetrating the pipe is located in the loudspeaker transition hole, and with constitute between the loudspeaker transition hole and penetrate and inhale the chamber.
Further, the gas mist ejection port has a truncated cone shape, and a large end of the truncated cone faces the gas mist ejection direction.
The utility model discloses set up in the rifle body and penetrate formula atomizing structure, changed traditional spray gun form. When the high-pressure air flow is quickly ejected from the ejection opening of the ejection pipe, the reducing agent is sucked into the suction cavity by the power of the high-speed air flow and ejected out of the aerosol ejection opening of the aerosol diffusion conduit to enter the flue gas of the gas industrial furnace for denitration.
The utility model has the advantages of energy saving, reducing agent saving, high NOx removal rate and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the attached fig. 1: 1 is a gun body, 101 is a reducing agent channel annular outlet, 2 is a jet pipe joint, 201 is a reducing agent porous channel, 3 is a jet pipe, 4 is an aerosol divergence conduit, 401 is a large-diameter cylindrical hole, 402 is a horn transition hole, 403 is a small-diameter cylindrical hole, a is a high-pressure gas inlet, b is a reducing agent inlet, and c is an aerosol spray outlet.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in figure 1: a high-pressure gas channel and a reducing agent channel are arranged in the gun body 1, an inlet a of the high-pressure gas channel is hermetically connected with an external high-pressure gas pipeline, an inlet b of the reducing agent channel is hermetically connected with an external reducing agent pipeline, the directions of an outlet of the high-pressure gas channel of the gun body 1 and an outlet of the reducing agent channel are the same, an outlet of the reducing agent channel is annular, an annular outlet 101 of the reducing agent channel surrounds the outlet of the high-pressure gas channel, and connecting threads are arranged at the two outlets; one end of the gas fog dispersing conduit 4 is provided with a gas fog spraying port c, the other end is provided with a threaded interface, the pipe hole inside the gas fog dispersing conduit 4 consists of a section of large-diameter cylindrical hole 401, a section of small-diameter cylindrical hole 403 and a horn transition hole 402 between the two holes, one end of the injection pipe joint 2 is hermetically connected with connecting threads arranged at two outlets of the gun body 1, the other end of the injection pipe joint is connected with the threaded interface of the gas fog dispersing conduit 4, a high-pressure gas channel in the gun body 1 and the injection pipe joint 2 is communicated with the pipe cavity of the gas fog dispersing conduit 4 through an injection pipe 3, a reducing agent channel in the injection pipe joint 2 consists of a plurality of through holes, a reducing agent porous channel 201 surrounds the high-pressure gas channel, one end of the reducing agent porous channel is communicated with the annular outlet 101 of; the injection pipe 3 is a taper pipe, the large diameter end of the taper pipe is fixedly connected with one end of the injection pipe connector 2 to form a whole, the small diameter end of the taper pipe is an injection end, and the injection end is positioned in a horn transition hole 402 in the aerial fog dispersing conduit 4 to form an injection structure.
The utility model discloses the during operation, high-pressure gas gets into through the blowout of injection pipe 3 from the high-pressure gas entry a of rifle body 1, and high velocity air makes the outer cone wall of injection pipe 3 and aerial fog disperse the annular space between the 401 internal face of major diameter cylinder hole in the pipe 4 and form the negative pressure to in inhaling the annular space with the reductant from reductant entry b through reductant porous channel 201, make the reductant follow aerial fog blowout c blowout after atomizing under high velocity air's effect.

Claims (2)

1. A jet-suction type atomizing spray gun comprises a gun body, a jet pipe joint, a jet pipe and an aerosol dispersion guide pipe, wherein a high-pressure gas channel and a reducing agent channel are arranged in the gun body and the jet pipe joint, an inlet of the high-pressure gas channel is connected with an external high-pressure gas pipeline, and an inlet of the reducing agent channel is connected with an external reducing agent pipeline; the one end of aerial fog divergence pipe is equipped with the hickey, and the other end is equipped with aerial fog blowout mouth, its characterized in that:
one end of the jet pipe joint is hermetically connected with the gun body, and the other end of the jet pipe joint is hermetically connected with the threaded interface of the aerosol divergence conduit; the injection pipe is fixedly connected to the end surface of the injection pipe joint; the high-pressure gas channel in the gun body is communicated with the pipe cavity of the gas fog dispersing guide pipe through the injection pipe joint and the high-pressure gas channel in the injection pipe, and the reducing agent channel in the gun body is communicated with the pipe cavity of the gas fog dispersing guide pipe through the reducing agent channel in the injection pipe joint; the pipe cavity of pipe is dispersed to aerial fog comprises one section major diameter cylinder hole and one section minor diameter cylinder hole and the loudspeaker transition hole between two holes, and aerial fog is dispersed pipe one end threaded interface sets up in the major diameter cylinder hole, the aerial fog blowout mouth sets up minor diameter cylinder hole end, the jet orifice of penetrating the pipe is located in the loudspeaker transition hole, and with constitute between the loudspeaker transition hole and penetrate and inhale the chamber.
2. The injection-type atomizing spray gun as set forth in claim 1, wherein: the gas fog spraying port is in a cone frustum shape, and the large end of the cone frustum faces the gas fog spraying direction.
CN201922284852.9U 2019-12-18 2019-12-18 Jet-suction type atomizing spray gun Active CN211359251U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922284852.9U CN211359251U (en) 2019-12-18 2019-12-18 Jet-suction type atomizing spray gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922284852.9U CN211359251U (en) 2019-12-18 2019-12-18 Jet-suction type atomizing spray gun

Publications (1)

Publication Number Publication Date
CN211359251U true CN211359251U (en) 2020-08-28

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CN201922284852.9U Active CN211359251U (en) 2019-12-18 2019-12-18 Jet-suction type atomizing spray gun

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114749296A (en) * 2022-05-12 2022-07-15 鑫广绿环再生资源股份有限公司 Urea solution atomizing spray gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114749296A (en) * 2022-05-12 2022-07-15 鑫广绿环再生资源股份有限公司 Urea solution atomizing spray gun

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