CN214598247U

CN214598247U - Gas distribution device in wet absorption tower

Info

Publication number: CN214598247U
Application number: CN202120821153.8U
Authority: CN
Inventors: 杨敏
Original assignee: Zhejiang Tianying Environmental Protection Technology Co ltd
Current assignee: Zhejiang Tianying Environmental Protection Technology Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-05
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a gas distribution device in wet process absorption tower, including the absorption tower main part, the inside of absorption tower main part is by the overhead guard, spray district and gas distribution storehouse and constitute, and the internally mounted of overhead guard has the liquid bin that sprays, and the internally mounted who sprays the liquid bin has the circulating pump that sprays, the internally mounted in gas distribution storehouse has the gas distribution cover, and the internally mounted of gas distribution cover has impurity filtering surface net, install the air-blower in the gas distribution storehouse, the air-blower is located the gas distribution cover under, the blast pipeline is installed to the one end of air-blower, and the other end of air-blower extends to the outside of absorption tower main part through the intake pipe, installs the ooff valve in the intake pipe. The utility model discloses a be equipped with the gas distribution device below spraying the district, it sprays the combined use with intensive and can effectively prevent the flue gas and climb the wall short circuit to with thick liquid reintroduction spraying the district on the wall, the thick liquid that flows down along the gas distribution device is held up by the flue gas and is realized the gas-liquid contact, has improved desulfurization efficiency.

Description

Gas distribution device in wet absorption tower

Technical Field

The utility model relates to an environmental protection processing technology field specifically is a gas distribution device in wet process absorption tower.

Background

The wet desulfurization is characterized in that a desulfurization system is positioned at the tail end of a flue and behind a dust remover, and the reaction temperature in the desulfurization process is lower than the dew point, so the desulfurized flue gas can be discharged only by reheating. Because of the gas-liquid reaction, the desulfurization reaction speed is high, the efficiency is high, and the utilization rate of the desulfurization additive is high, when lime is used as a desulfurizer, the desulfurization rate can reach 90 percent when Ca/S is 1, and the method is suitable for flue gas desulfurization of large coal-fired power stations. However, wet flue gas desulfurization has the problems of wastewater treatment, large initial investment and high operating cost. With the continuous improvement of the sulfur dioxide emission standard of the thermal power plant in China and the increase of the sulfur content of the fire coal compared with the prior art, the existing wet desulphurization unit can not meet the relevant requirements. To further improve the desulfurization efficiency, LY-WS desulfurization additive, LY-WS desulfurization catalyst, LY-WS desulfurization synergist and the like are added in the desulfurization process, so that the sulfur dioxide emission standard meets the national requirements.

The inner wall of the current absorption tower is washed by spraying slurry, the service life of the anti-corrosion lining is short, and meanwhile, gas-liquid distribution is uneven, so that the desulfurization efficiency is low, and therefore, the market urgently needs to develop a novel gas distribution device in a wet absorption tower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas distribution device in wet process absorption tower to solve present absorption tower inner wall that proposes in the above-mentioned background art owing to receive the spraying slurry to erode, the life of anticorrosive inside lining is shorter, and gas-liquid distribution is inhomogeneous simultaneously, leads to the lower problem of desulfurization efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a gas distribution device in wet process absorption tower, includes the absorption tower main part, the inside of absorption tower main part is by the overhead guard, spray district and gas distribution storehouse and constitute, and the internally mounted of overhead guard has the liquid bin that sprays, and the internally mounted who sprays the liquid bin has the circulating pump that sprays, the internally mounted in gas distribution storehouse has the gas distribution cover, and the internally mounted of gas distribution cover has impurity filtering surface net, install the air-blower in the gas distribution storehouse, the air-blower is located the gas distribution cover under, the one end installation blast pipe of air-blower, the other end of air-blower extends to the outside of absorption tower main part through the intake pipe, installs the ooff valve in the intake pipe.

Preferably, an exhaust port is arranged on the side surface of the upper end of the absorption tower main body, and a valve is installed in the exhaust port.

Preferably, the top cover is positioned above the spraying area, and the air distribution bin is positioned right below the spraying area.

Preferably, the lower end of the spraying circulating pump is fixedly connected with a spraying branch pipe through a spraying main pipe.

Preferably, the spray branch pipe is installed at the top end of the spray area, and the lower end of the spray branch pipe is provided with a spray header.

Preferably, the two ends of the inner wall of the absorption tower main body are provided with anti-corrosion linings.

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

the gas distribution device is arranged below the spraying area, the gas distribution device and the intensive spraying are combined for use, so that the short circuit caused by the wall climbing of the flue gas can be effectively prevented, and the slurry on the wall is introduced into the spraying area again; the liquid/gas ratio is reduced, and the power consumption of a circulating pump is saved; the inner wall of the absorption tower is reduced from being washed by the slurry, and the service life of the anti-corrosion lining is prolonged; gas-liquid contact close to the wall is improved, and gas-liquid distribution is more uniform.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a top view of the inside of the gas distribution cover of the present invention.

In the figure: 1. an exhaust port; 2. an absorption tower main body; 3. a top cover; 4. a spraying area; 5. a gas distribution bin; 6. an anticorrosive lining; 7. an impurity filtering surface net; 8. a blast duct; 9. a blower; 10. a spray liquid storage tank; 11. a main spray pipe; 12. spraying branch pipes; 13. a gas distribution cover; 14. an air inlet pipe; 15. an on-off valve; 16. a spray circulation pump; 17. and a spray header.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a gas distribution device in wet process absorption tower, including absorption tower main part 2, the inside of absorption tower main part 2 is by hood 3, it comprises to spray district 4 and gas distribution storehouse 5, the internally mounted of hood 3 has sprays liquid bin 10, the internally mounted of spraying liquid bin 10 has spray circulating pump 16, the internally mounted of gas distribution storehouse 5 has gas distribution cover 13, the internally mounted of gas distribution cover 13 has impurity filtering surface net 7, install air-blower 9 in the gas distribution storehouse 5, air-blower 9 is located gas distribution cover 13 under, air-blower 9's one end installation blast pipe 8, the other end of air-blower 9 extends to the outside of absorption tower main part 2 through intake pipe 14, install ooff valve 15 in the intake pipe 14.

Further, the side surface of the upper end of the absorption tower main body 2 is provided with an exhaust port 1, a valve is installed in the exhaust port 1, and the opening of the valve is controlled for exhausting.

Further, the top cover 3 is positioned above the spraying area 4, and the gas distribution chamber 5 is positioned right below the spraying area 4.

Further, the lower end of the spray circulation pump 16 is fixedly connected with a spray branch pipe 12 through a spray main pipe 11.

Further, a spray branch pipe 12 is installed at the top end of the spray zone 4, and a spray header 17 is installed at the lower end of the spray branch pipe 12, and spray holes are formed in the surface of the spray header 17 and used for spraying reaction liquid.

Further, the inner wall both ends of absorption tower main part 2 are provided with anticorrosive inside lining 6, and anticorrosive inside lining 6 closely laminates with 2 inner walls of absorption tower main part, possesses certain anticorrosion protection effect.

The working principle is as follows: when in use, the absorption tower main body 2 is internally composed of a top cover 3, a spraying area 4 and a gas distribution chamber 5, a spraying liquid storage tank 10 is arranged inside the top cover 3, a spraying circulating pump 16 is arranged inside the spraying liquid storage tank 10, the lower end of the spraying circulating pump 16 is fixedly connected with a spraying branch pipe 12 through a spraying main pipe 11, the lower end of the spraying branch pipe 12 is provided with a spraying head 17, the spraying liquid can be sprayed out through the spraying circulating pump 16 through the spraying head 17, a gas distribution cover 13 is arranged inside the gas distribution chamber 5, an impurity filtering surface net 7 is arranged inside the gas distribution cover 13, a blower 9 is arranged inside the gas distribution chamber 5, the blower 9 is positioned right below the gas distribution cover 13, one end of the blower 9 is provided with a blast pipeline 8, the flue gas inside an air inlet pipe 14 can be blown out upwards through the blast pipeline 8 under the blast action of the blower 9 and is contacted with the spraying liquid through the gas distribution cover 13, make the thick liquid that flows down along the gas distribution device be held up by the flue gas and realize the gas-liquid contact, improved desulfurization efficiency, reduced liquid/gas ratio, saved the power consumption that sprays circulating pump 16, reduced the absorption tower main part 2 inner wall simultaneously and washed away by the thick liquid, the life of extension anticorrosive inside lining 6 has improved the gas-liquid contact of being close to the wall, makes the gas-liquid distribution more even.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An air distribution device in a wet absorption tower comprises an absorption tower main body (2) and is characterized in that, the absorption tower main body (2) is internally composed of a top cover (3), a spraying area (4) and an air distribution bin (5), a spraying liquid storage tank (10) is arranged inside the top cover (3), a spraying circulating pump (16) is arranged inside the spraying liquid storage tank (10), an air distribution cover (13) is arranged in the air distribution bin (5), an impurity filtering surface net (7) is arranged in the air distribution cover (13), a blower (9) is arranged in the air distribution bin (5), the blower (9) is positioned right below the air distribution cover (13), and a blast pipeline (8) is arranged at one end of the blower (9), the other end of the blower (9) extends to the outside of the absorption tower main body (2) through an air inlet pipe (14), and a switch valve (15) is arranged on the air inlet pipe (14).

2. The internal gas distribution device of the wet absorption tower according to claim 1, wherein: an exhaust port (1) is arranged on the side surface of the upper end of the absorption tower main body (2), and a valve is installed in the exhaust port (1).

3. The internal gas distribution device of the wet absorption tower according to claim 1, wherein: the top cover (3) is positioned above the spraying area (4), and the gas distribution bin (5) is positioned right below the spraying area (4).

4. The internal gas distribution device of the wet absorption tower according to claim 1, wherein: the lower end of the spraying circulating pump (16) is fixedly connected with a spraying branch pipe (12) through a spraying main pipe (11).

5. The internal gas distribution device of the wet absorption tower according to claim 4, wherein: the spraying branch pipe (12) is arranged at the top end of the spraying area (4), and the lower end of the spraying branch pipe (12) is provided with a spraying head (17).

6. The internal gas distribution device of the wet absorption tower according to claim 1, wherein: and anticorrosive linings (6) are arranged at two ends of the inner wall of the absorption tower main body (2).