CN215086078U

CN215086078U - Boiler denitration synergistic device

Info

Publication number: CN215086078U
Application number: CN202121153413.5U
Authority: CN
Inventors: 张站强; 乔微微; 李辉
Original assignee: Zibo Huirun Thermal Power Co ltd
Current assignee: Zibo Huirun Thermal Power Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-10
Anticipated expiration: 2031-05-25

Abstract

The utility model belongs to the technical field of the boiler denitration, concretely relates to boiler denitration synergy device, including denitration agent spray gun and furnace flue, denitration agent spray gun includes the barral of a gun, at the fixed nozzle that is equipped with in the front end of barral of a gun, the nozzle spouts in to the furnace flue the barral of a gun is equipped with conveying pipe outward, and conveying pipe one end and the furnace flue intercommunication of being close to the nozzle are keeping away from the sealed setting of conveying pipe one end of nozzle, conveying pipe is connected with one or more roots's fan. The utility model discloses the small investment, with low costs, the denitration effect increases greatly, can reach more than 80%, and ammonia escape volume reduces simultaneously, has reduced environmental pollution and wasting of resources.

Description

Boiler denitration synergistic device

Technical Field

The utility model belongs to the technical field of the boiler denitration, concretely relates to boiler denitration increases device.

Background

The boiler can generate a large amount of nitrogen oxides in the combustion process, and the pollution is caused to air.

The prior commonly used denitrification method comprises the following steps: the denitration agent is atomized by a spray gun and then sprayed into the flue, so that the denitration agent and the nitrogen oxide are subjected to chemical reaction to generate nitrogen, and the aim of denitrification is fulfilled.

There are problems in that: 1. the air speed in the hearth flue is high, a large amount of coal ash is mixed, so that the penetrating power of the denitration agent sprayed by the spray gun is weakened, the denitration agent cannot be sprayed to the deep part of the flue, the denitration agent cannot be fully mixed and contacted with flue gas, and the denitration effect is poor and can only reach 60-70%. 2. The escape amount of ammonia is large, and environmental pollution and waste are caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide a boiler denitration synergistic device, can improve denitration efficiency greatly, reach national standard and discharge, reduce environmental pollution.

The utility model discloses an adopt following technical scheme to realize:

the boiler denitration synergistic device comprises a denitration agent injection gun and a hearth flue, wherein the denitration agent injection gun comprises a gun rod, a nozzle is fixedly arranged at the front end of the gun rod and is injected into the hearth flue, a conveying air pipe is arranged outside the gun rod, one end of the conveying air pipe close to the nozzle is communicated with the hearth flue, one end of the conveying air pipe far away from the nozzle is arranged in a sealing mode, and the conveying air pipe is connected with one or more Roots fans.

Preferably, the rear end fixedly connected with cavity of barral of a gun, the cavity is connected with high-pressure air pipe and denitrifier pipe respectively, and denitrifier and high-pressure air are led into in the cavity.

Preferably, a first pressure gauge is arranged on the high-pressure gas pipe, and a flow gauge is arranged on the denitrifier pipe.

Preferably, an air volume adjusting valve is arranged at the outlet of the Roots blower.

Preferably, a second pressure gauge is arranged at an air source inlet of the conveying air pipe.

Preferably, a plurality of roots's fans set up side by side, can open a plurality of fans increase amount of wind simultaneously, can also be when fan equipment breaks down, have reserve fan available, avoid arousing the fluctuation of amount of wind pressure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses the small investment, with low costs, the denitration effect increases greatly, can reach more than 80%, and ammonia escape volume reduces simultaneously, has reduced environmental pollution and wasting of resources.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a denitrifier spray gun; 2. a cavity; 3. a high-pressure air pipe; 4. a first pressure gauge; 5. a denitrifier pipe; 6. a flow meter; 7. a gun rod; 8. a conveying air pipe; 9. a nozzle; 10. a furnace flue; 11. a second pressure gauge; 12. an air volume adjusting valve; 13. roots blower.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the denitration synergistic device for the boiler comprises a denitration agent injection gun 1 and a hearth flue 10, wherein the denitration agent injection gun 1 comprises a gun rod 7, a nozzle 9 is fixedly arranged at the front end of the lance 7, a cavity 2 is fixedly connected at the rear end of the lance 7, the cavity 2 is respectively connected with a high-pressure gas pipe 3 and a denitrifier pipe 5, a first pressure gauge 4 is arranged on the high-pressure gas pipe 3, a flowmeter 6 is arranged on the denitrifier pipe 5, the nozzle 9 sprays into a hearth flue 10, a conveying air pipe 8 is arranged outside the gun rod 7, one end of the conveying air pipe 8 close to the nozzle 9 is communicated with a hearth flue 10, the one end of keeping away from the delivery tuber pipe 8 of nozzle 9 is sealed to be set up, delivery tuber pipe 8 is connected with three roots's fan 13 that set up side by side, and roots's fan 13 exit all is equipped with air regulation valve 12, and the wind regime entrance of delivery tuber pipe 8 is equipped with second manometer 11.

During operation, let in the denitrifier in 5 to cavity 2 through the denitrifier pipe, then let in highly-compressed air in 3 to cavity 2 through highly-compressed air pipe, under highly-compressed air's effect again, with the denitrifier from barral of a gun 7 propelling movement to nozzle 9, spout in furnace flue 10 through nozzle 9 after the denitrifier atomizing in the propelling movement process, the wind regime that roots's fan 13 produced gets into in the conveying air pipe 8 simultaneously, the wind pressure reaches 0.05MPa, the amount of wind reaches 1000m 3/minute, carry the denitrifier of denitrifier injection rifle 1 spun to furnace flue 10 depths, fully mix and contact with the flue gas, denitration effect greatly increases, reach more than 80%, ammonia escape volume reduces simultaneously, environmental pollution has been reduced.

The technology has 2-3 ten thousand investment and lower cost, can greatly improve the denitration efficiency, reaches the national standard emission and reduces the environmental pollution.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims

1. The utility model provides a boiler denitration increase device, includes denitration agent spray gun (1) and furnace flue (10), its characterized in that: the denitration agent spraying gun (1) comprises a gun rod (7), a nozzle (9) is fixedly arranged at the front end of the gun rod (7), the nozzle (9) sprays into a hearth flue (10), a conveying air pipe (8) is arranged outside the gun rod (7), one end of the conveying air pipe (8) close to the nozzle (9) is communicated with the hearth flue (10), one end of the conveying air pipe (8) far away from the nozzle (9) is arranged in a sealing mode, and the conveying air pipe (8) is connected with one or more roots fans (13).

2. The boiler denitration synergistic apparatus of claim 1, characterized in that: the rear end fixedly connected with cavity (2) of barral of a gun (7), cavity (2) are connected with high-pressure gas pipe (3) and denitrifier pipe (5) respectively.

3. The boiler denitration enhancing apparatus of claim 2, characterized in that: a first pressure gauge (4) is arranged on the high-pressure air pipe (3), and a flow gauge (6) is arranged on the denitrifier pipe (5).

4. The boiler denitration synergistic apparatus of claim 1, characterized in that: an air volume adjusting valve (12) is arranged at the outlet of the Roots blower (13).

5. The boiler denitration synergistic apparatus of claim 1, characterized in that: and a second pressure gauge (11) is arranged at an air source inlet of the conveying air pipe (8).

6. The boiler denitration synergistic apparatus of claim 1, characterized in that: the plurality of Roots blowers (13) are arranged in parallel.