CN217247941U

CN217247941U - Low-nitrogen combustion denitration device

Info

Publication number: CN217247941U
Application number: CN202123267025.2U
Authority: CN
Inventors: 白文付
Original assignee: Yunnan Baizhao Environmental Protection Technology Co ltd
Current assignee: Yunnan Baizhao Environmental Protection Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-08-23
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a low-nitrogen combustion denitration device, which relates to the technical field of gas purification, and comprises a liquid storage tank, wherein alkaline mixed liquid is added in the liquid storage tank, the left outer wall of the liquid storage tank is fixedly provided with a draught fan, the air inlet port of the draught fan is connected with an air inlet pipe, the tail end of the air inlet pipe is fixedly provided with a NO conversion device, the air outlet port of the draught fan is connected with a ventilation pipe, the bottom end of the ventilation pipe is connected with a uniform pipe, the uniform pipe is connected with a plurality of exhaust pipes, the exhaust pipes are positioned in the alkaline mixed liquid and are provided with exhaust ports on the surfaces, a purification tower body communicated with the liquid storage tank is fixed above the liquid storage tank, three groups of heat dissipation fins are fixed at equal intervals on the inner side of the purification tower body, the surfaces of the three groups of heat dissipation fins are provided with catalyst coating layers, the utility model has reasonable structural design, simple structural mode and lower investment and construction cost, the denitration method has a good denitration effect, can meet the production management requirements of small factories and small workshops, and has a good application prospect.

Description

Low-nitrogen combustion denitration device

Technical Field

The utility model relates to a gas purification technical field, in particular to low-nitrogen combustion denitrification facility.

Background

The low-nitrogen combustion is a combustion technology for greatly reducing nitrogen oxides in combustion products by adjusting the ratio of fuel to air in each combustion stage, nitrogen oxides generated by combustion mainly comprise nitrogen monoxide and nitrogen dioxide, which are collectively referred to as NOx, and NOx in the atmosphere is dissolved in water and then generated into acid rain, which brings extensive harm to the environment and causes huge economic loss, so that the NOx generated by combustion in a boiler needs to be subjected to denitration treatment.

The existing denitration device has a complex structure and high investment cost, and can not meet the use requirements of some workshops.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a low nitrogen burning denitrification facility can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a low-nitrogen combustion denitration device comprises a liquid storage tank, wherein alkaline mixed liquid is added into the liquid storage tank, a draught fan is fixedly installed on the outer wall of the left side of the liquid storage tank, an air inlet port of the draught fan is connected with an air inlet pipe, an NO conversion device is fixedly installed at the tail end of the air inlet pipe, an air inlet port of the NO conversion device is connected with an air inlet pipe, a smoke outlet port of an end-to-end connected boiler of the air inlet pipe is connected with a ventilation pipe, the bottom end of the ventilation pipe is connected with an uniform through pipe, the uniform through pipe is connected with a plurality of exhaust pipes, the exhaust pipes are positioned in the alkaline mixed liquid, the surfaces of the exhaust pipes are provided with exhaust ports, a purification tower body communicated with the liquid storage tank is fixed above the liquid storage tank, three radiating fins are fixed at three equal intervals on the inner side of the purification tower body, three radiating fins are provided with catalyst coating layers on the surfaces of the radiating fins, and a first demisting wire mesh is fixed below the radiating fins in the purifying tower body.

Preferably, the NO conversion device comprises a box body, a spoiler is fixed at the left end of the inner side of the box body, and a filter is fixed at the right end of the inner side of the box body.

Preferably, the filter is a high temperature resistant filter screen structure made of synthetic fibers.

Preferably, the top of the box body is fixedly provided with an ozone generator, an air outlet port of the ozone generator is connected with two air outlet pipes, and the two air outlet pipes extend to the inner side of the box body and are positioned between the spoiler and the filter.

Preferably, a one-way flow valve is mounted on the vent pipe.

Preferably, the top of purifying tower body is half a cone structure and its internally mounted has the air discharge fan, the below of air discharge fan is fixed with second defogging silk screen.

Preferably, the radiating fins are connected with heat pipes, and the tail ends of the heat pipes are connected with a boiler.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses inside the produced ozone accessible outlet duct of the ozone generator who sets up entered into the box, reacted with the nitric oxide in the waste gas and generated nitrogen dioxide, the gas that contains nitrogen dioxide then entered into alkaline mixed liquid through the gas vent on the exhaust pipe in with alkaline mixed liquid intensive mixing to can absorb nitrogen dioxide to a great extent, make the device have good denitration effect, avoid the exhaust gas pollution environment who produces.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the NO conversion device of the present invention;

fig. 3 is a top view of the exhaust duct of the present invention.

In the figure: 1. a liquid storage tank; 101. alkaline mixed liquor; 2. an induced draft fan; 201. an air inlet pipe; 202. a vent pipe; 203. a pipe is uniformly distributed; 204. an exhaust duct; 205. an exhaust port; 206. a one-way flow valve; 3. a NO conversion device; 301. a smoke inlet pipe; 302. a box body; 303. a spoiler; 304. a filter; 305. an ozone generator; 306. an air outlet pipe; 4. a purification tower body; 401. a heat dissipating fin; 402. a heat pipe; 403. a first defogging screen mesh; 404. an exhaust fan; 405. and a second defogging screen.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-3, a low-nitrogen combustion denitration device comprises a liquid storage tank 1, wherein an alkaline mixed liquid 101 is added in the liquid storage tank 1, an induced draft fan 2 is fixedly installed on the outer wall of the left side of the liquid storage tank 1, an air inlet pipe 201 is connected to an air inlet port of the induced draft fan 2, an NO conversion device 3 is fixedly installed at the tail end of the air inlet pipe 201, an air inlet pipe 301 is connected to an air inlet port of the NO conversion device 3, the tail end of the air inlet pipe 301 is connected to a smoke outlet port of a boiler, an air outlet port of the induced draft fan 2 is connected to a ventilation pipe 202, a uniform pipe 203 is connected to the bottom end of the ventilation pipe 202, a plurality of exhaust pipes 204 are connected to the uniform pipe 203, the exhaust pipes 204 are positioned in the alkaline mixed liquid 101, an exhaust port 205 is formed on the surface of the exhaust pipes, a purification tower body 4 communicated with the liquid storage tank 1 is fixed above the liquid storage tank 1, three groups of heat dissipation fins 401 are fixed at equal intervals, and catalyst coating layers are arranged on the surfaces of the three groups of heat dissipation fins 401, a first demisting wire mesh 403 is fixed below the heat dissipation fins 401 and inside the purification tower body 4.

The NO conversion device 3 includes a case 302, a spoiler 303 is fixed to the left end of the inside of the case 302, and a filter 304 is fixed to the right end of the inside of the case 302 to filter soot particles in the gas.

The filter 304 is a high temperature resistant filter screen structure made of synthetic fibers, so that the filter 304 has good high temperature resistance, and potential safety hazards caused by overhigh temperature of exhaust gas generated by a boiler are prevented.

An ozone generator 305 is fixedly installed at the top of the box body 302, two air outlet pipes 306 are connected to an air outlet port of the ozone generator 305, the two air outlet pipes 306 extend to the inner side of the box body 302 and are located between the spoiler 303 and the filter 304, and NO can be oxidized by ozone generated by the ozone generator 305.

A one-way flow valve 206 is installed in the vent line 202 to prevent the alkaline mixed solution 101 from flowing back into the vent line 202.

The top of the purification tower body 4 is of a half-truncated-cone structure, an exhaust fan 404 is arranged in the purification tower body, and a second demisting wire net 405 is fixed below the exhaust fan 404, so that mist in gas can be effectively removed.

The radiating fins 401 are all connected with heat pipes 402, the tail ends of the heat pipes 402 are connected with a boiler, heat generated during combustion of the boiler is directly used, and waste of heat energy is avoided.

It should be noted that, the utility model relates to a low nitrogen combustion denitrification facility, in use, the waste gas produced when burning coal in the boiler can pass through NO conversion device 3 under the effect of draught fan 2 first, and then discharge through gas vent 205 on exhaust pipe 204, NO conversion device 3 includes box 302, the fixed filter 304 of inboard right-hand member of box 302 can effectively filter smoke and dust particles in the waste gas, ozone that ozone generator 305 installed on the top of box 302 produced can enter into box 302 through outlet duct 306 and react with the nitric oxide in the waste gas, turn the nitric oxide into nitrogen dioxide, the spoiler 303 that sets up can improve the mixing effect of ozone and waste gas, thereby improve the conversion rate of nitric oxide, improve the evolution effect to the waste gas, exhaust pipe 204 is equipped with a plurality ofly, thereby can improve the mixing effect of discharged nitrogen dioxide and alkaline mixed liquid 101, the alkaline mixed liquid 101 can absorb nitrogen dioxide to a large extent, so that the device has a good denitration effect.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a low-nitrogen combustion denitrification facility, includes liquid reserve tank (1), its characterized in that: added with alkaline mixed liquid (101) in liquid reserve tank (1), the left side outer wall fixed mounting of liquid reserve tank (1) has draught fan (2), the air inlet port of draught fan (2) is connected with air-supply line (201), the terminal fixed mounting of air-supply line (201) has NO conversion equipment (3), the air inlet port of NO conversion equipment (3) is connected with into tobacco pipe (301), the end-to-end connection boiler's of advancing tobacco pipe (301) play cigarette port, the air-out port of draught fan (2) is connected with ventilation pipe (202), the bottom of ventilation pipe (202) is connected with equal siphunculus (203), be connected with a plurality of exhaust pipes (204) on equal siphunculus (203), exhaust pipe (204) are located alkaline mixed liquid (101) and its surface has seted up gas vent (205), the top of liquid reserve tank (1) is fixed with rather than communicating purification tower body (4), the inboard of purifying tower body (4) is fixed with three equidistance and is fixed with three group radiating fin (401), and is three groups radiating fin (401)'s surface all is provided with catalyst coating layer, the below of radiating fin (401) is fixed with first defogging silk screen (403) in the inside of purifying tower body (4).

2. The low-nitrogen combustion denitration apparatus according to claim 1, characterized in that: the NO conversion device (3) comprises a box body (302), wherein a spoiler (303) is fixed at the left end of the inner side of the box body (302), and a filter (304) is fixed at the right end of the inner side of the box body (302).

3. The low-nitrogen combustion denitration apparatus according to claim 2, characterized in that: the filter (304) is a high temperature resistant filter mesh structure made of synthetic fibers.

4. The low-nitrogen combustion denitration device according to claim 2, characterized in that: the top of the box body (302) is fixedly provided with an ozone generator (305), an air outlet port of the ozone generator (305) is connected with two air outlet pipes (306), and the two air outlet pipes (306) extend to the inner side of the box body (302) and are positioned between the spoiler (303) and the filter (304).

5. The low-nitrogen combustion denitration apparatus according to claim 1, characterized in that: the ventilation pipe (202) is provided with a one-way flow valve (206).

6. The low-nitrogen combustion denitration apparatus according to claim 1, characterized in that: the top of purifying tower body (4) is half a cone structure and its internally mounted has exhaust fan (404), the below of exhaust fan (404) is fixed with second defogging silk screen (405).

7. The low-nitrogen combustion denitration apparatus according to claim 1, characterized in that: the radiating fins (401) are connected with heat pipes (402), and the tail ends of the heat pipes (402) are connected with a boiler.