CN209901014U

CN209901014U - Flue gas deodorization system for waste incineration power plant

Info

Publication number: CN209901014U
Application number: CN201920297839.4U
Authority: CN
Inventors: 莫兵; 柯飞燕; 黄焕平
Original assignee: Guangdong Malan Ecological Environment Co Ltd
Current assignee: Guangdong Malan Ecological Environment Co Ltd
Priority date: 2019-03-09
Filing date: 2019-03-09
Publication date: 2020-01-07
Anticipated expiration: 2029-03-09

Abstract

The utility model relates to a flue gas deodorization system for a waste incineration power plant, which comprises an air inlet system, a fire damper, a gate valve, a first treatment tower, a second treatment tower, a third treatment tower, an electric air door, an exhaust fan, a check valve and an exhaust system which are sequentially communicated, and also comprises a water delivery system, a first heat exchanger, a second heat exchanger, an oxidant medicine box, an alkali liquor medicine box, a first water pump, a second water pump, a turbo generator, a water tank and a liquid drainage system; the water delivery system is sequentially communicated with the first heat exchanger, the oxidant medicine box, the first water pump and the first treatment tower, and is also sequentially communicated with the second heat exchanger, the alkali liquor medicine box, the second water pump and the second treatment tower; a steam outlet of the steam turbine generator is respectively communicated with a steam inlet of the first heat exchanger and a steam inlet of the second heat exchanger, and a water tank is respectively communicated with a steam outlet of the first heat exchanger and a steam outlet of the second heat exchanger; the liquid drainage system is respectively communicated with the first treatment tower and the second treatment tower. The system can effectively remove the odor of the smoke.

Description

Flue gas deodorization system for waste incineration power plant

Technical Field

The utility model relates to a waste gas purification technical field especially relates to a flue gas deodorization system for msw incineration power plant.

Background

In recent years, the urbanization process of China is rapidly developed, the per capita domestic garbage yield of cities in China is 440 kg, the per year rate of the per capita domestic garbage is increased by 8% -10%, and the environmental pollution is increasingly serious. The conventional treatment method of the municipal solid waste comprises landfill, composting and incineration power generation. Among them, the waste incineration power generation has attracted much attention and is rapidly developed due to the advantages of thorough treatment, large volume reduction, short treatment time, small occupied area, heat energy recovery and the like. However, the major risk of the waste incineration power generation is that the waste incineration power generation has toxic, harmful and odorous gases overflow or large-scale leakage, which causes great influence and even difficult recovery damage to factory workers, local residents, the atmosphere and the like, and especially the odor of the gases extremely influences the lives of the local residents.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a flue gas deodorization system for msw incineration power plant, it has the deodorant advantage of flue gas.

A flue gas deodorization system for a waste incineration power plant comprises an air inlet system, a fire damper, a gate valve, a first treatment tower, a second treatment tower, a third treatment tower, an electric air door, an exhaust fan, a check valve and an exhaust system which are sequentially communicated, and further comprises a water delivery system, a first heat exchanger, a second heat exchanger, an oxidant medicine box, an alkali liquor medicine box, a first water pump, a second water pump, a turbine generator, a water tank and a liquid drainage system; the water delivery system is sequentially communicated with the first heat exchanger, the oxidant medicine box, the first water pump and the first treatment tower, and is also sequentially communicated with the second heat exchanger, the alkali liquor medicine box, the second water pump and the second treatment tower; a steam outlet of the steam turbine generator is respectively communicated with a steam inlet of the first heat exchanger and a steam inlet of the second heat exchanger, and the water tank is respectively communicated with a steam outlet of the first heat exchanger and a steam outlet of the second heat exchanger; and the liquid drainage system is respectively communicated with the bottom of the first treatment tower and the bottom of the second treatment tower.

Compared with the prior art, a flue gas deodorization system for msw incineration power plant do benefit to the washing technique, adopt first treatment tower to carry out chemical treatment to the flue gas earlier, adopt the second treatment tower to carry out neutralization treatment to the flue gas after that, adopt the third treatment tower to further handle the flue gas at last to make the harmful component in the gas absorption and processing that can be abundant, make waste gas reach emission standard. During the period, utilize turbo generator's steam waste heat to heat the water of carrying to oxidant medical kit, alkali lye medical kit, through the temperature that improves the liquid medicine, help improving the chemical reaction effect, and then be favorable to fully absorbing and handling the harmful component in the flue gas. And finally, waste liquid in the first treatment tower and the second treatment tower is recovered in a unified manner, so that the waste liquid is convenient to treat, and meanwhile, steam after heat exchange is recovered, and other people are prevented from being scalded by the steam. In addition, through set up fire prevention valve and slide valve before first treatment tower, set up electronic air door and check valve behind the third treatment tower, can resist the impact of air current effectively, help guaranteeing the stability of air current.

Further, the fire damper is a 70 ℃ fire damper.

Furthermore, a first demisting core, a first spray header and a first filter element are sequentially arranged in the first treatment tower from top to bottom, an air inlet of the first treatment tower is arranged below the first filter element, an air outlet of the first treatment tower is arranged above the first demisting core, and the first spray header is communicated with a first water pump.

Furthermore, a second demisting core, a second spray header and a second filter element are sequentially arranged in the second treatment tower from top to bottom, an air inlet of the second treatment tower is arranged below the second filter element, an air outlet of the second treatment tower is arranged above the second demisting core, and the second spray header is communicated with a second water pump.

Furthermore, a biological filler layer, a photocatalytic layer and an activated carbon layer are sequentially arranged in the third treatment tower from top to bottom, an air inlet of the third treatment tower is arranged above the biological filler layer, and an air outlet of the third treatment tower is arranged below the activated carbon layer.

Further, a valve is installed on a pipeline between the oxidant medicine box and the water delivery system, a valve is installed on a pipeline between the alkali liquor medicine box and the water delivery system, a valve is installed on a pipeline between the first treatment tower and the liquid drainage system, a valve is installed on a pipeline between the second treatment tower and the liquid drainage system, a valve is installed on a pipeline between the turbonator and the first heat exchanger, and a valve is installed on a pipeline between the turbonator and the second heat exchanger.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a flue gas deodorization system for a waste incineration power plant according to the present invention;

100. an air intake system; 110. a fire damper; 120. a gate valve; 130. a first processing tower; 131. a first defogging core; 132. a first shower head; 133. a first filter element; 140. a second treatment tower; 141. a second defogging core; 142. a second shower head; 143. a second filter element; 150. a third treatment tower; 151. a biological filler layer; 152. a photocatalytic layer; 153. an activated carbon layer; 160. an electric damper; 170. an exhaust fan; 180. a check valve; 190. an exhaust system; 200. a water delivery system; 210. a first heat exchanger; 220. A second heat exchanger; 230. an oxidant tank; 240. a lye tank; 250. a first water pump; 260. a second water pump; 270. a drainage system; 300. a steam turbine generator; 310. a water tank.

Detailed Description

A flue gas deodorization system for a waste incineration power plant, referring to fig. 1, comprises an air inlet system 100, a fire damper 110, a gate valve 120, a first treatment tower 130, a second treatment tower 140, a third treatment tower 150, an electric air door 160, an exhaust fan 170, a check valve 180, an exhaust system 190, a water delivery system 200, a first heat exchanger 210, a second heat exchanger 220, an oxidant medicine box 230, an alkali liquor medicine box 240, a first water pump 250, a second water pump 260, a turbine generator 300, a water tank 310 and a liquid drainage system 270 which are sequentially communicated. The water delivery system 200 supplies water to the oxidant medicine box 230 through the first heat exchanger 210, supplies liquid to the first treatment tower 130 through the first water pump 250, supplies liquid to the alkali liquor medicine box 240 through the second heat exchanger 220, and supplies liquid to the second treatment tower 140 through the alkali liquor medicine box 240 through the second water pump 260; the steam of the turbo generator 300 is delivered to the first heat exchanger 210 and the second heat exchanger 220 to increase the water temperature, and then the cooled steam flows to the water tank 310 to be recovered; the liquid discharge system 270 is communicated with the bottom of the first treating tower 130 and the bottom of the second treating tower 140 respectively to recover waste liquid.

Specifically, in the present embodiment, the fire damper 110 is a 70 ℃ fire damper.

Referring to fig. 1, a first demisting core 131, a first spray header 132, and a first filter core 133 are sequentially disposed from top to bottom inside the first treatment tower 130. Wherein, the air inlet of the first treatment tower 130 is arranged below the first filter element 133, the air outlet of the first treatment tower 130 is arranged above the first demisting element 131, the first spray header 132 is communicated with the first water pump 250, and two groups of first spray headers 132 and first filter elements 133 are adopted. In the first treatment tower 130, the first spray header 132 sprays the oxidizer chemical solution to the first filter element 133, the waste gas contacts with the chemical solution to generate a chemical reaction, and the first filter element 133 can enlarge the contact surface of the chemical solution and the waste gas, which is helpful for further improving the reaction effect.

Referring to fig. 1, a second demisting core 141, a second spray header 142, and a second filter element 143 are sequentially disposed inside the second treatment tower 140 from top to bottom. The air inlet of the second treatment tower 140 is arranged below the second filter element 143, the air outlet of the second treatment tower 140 is arranged above the second demisting element 141, the second spray header 142 is communicated with the second water pump 260, and two sets of the second spray header 142 and the second filter element 143 are adopted. In the second treating tower 140, the second spray head 142 sprays the alkali liquor to the second filter element 143, the waste gas contacts with the alkali liquor to generate a neutralization chemical reaction, and the second filter element 143 can increase the contact area of the alkali liquor and the waste gas, which is helpful for further improving the reaction effect.

Referring to fig. 1, a bio-filler layer 151, a photocatalytic layer 152, and an activated carbon layer 153 are sequentially disposed from top to bottom inside the third treating tower 150. Specifically, the air inlet of the third processing tower 150 is disposed above the bio-filler layer 151, and the air outlet of the third processing tower 150 is disposed below the activated carbon layer 153. The bio-filler layer 151 is filled with bio-filler, and a bio-membrane is attached to the surface of the bio-filler, and the bio-membrane oxidizes and decomposes malodorous substances in the waste gas into CO, HO and a small amount of biomass by using the metabolic action of microorganisms, so as to achieve the purpose of gas purification. The photocatalytic layer 152 is internally provided with a photocatalytic device, a titanium dioxide catalyst of the photocatalytic device generates superoxide anion free radicals and hydroxyl radicals with strong chemical activity when being irradiated by ultraviolet light, and active oxygen and oxidizing free radicals generated by the photocatalytic device and odor molecules in waste gas are subjected to oxidation and decomposition reaction together to oxidize and decompose the odor into carbon dioxide, water and other nontoxic and odorless small molecular substances. The activated carbon of the activated carbon layer 153 absorbs and adsorbs residual NH, HS, and the like in the odor.

Further, a valve is installed on a pipeline between the oxidant medicine tank 230 and the water delivery system 200, a valve is installed on a pipeline between the alkali liquid medicine tank 240 and the water delivery system 200, a valve is installed on a pipeline between the first treatment tower 130 and the liquid discharge system 270, a valve is installed on a pipeline between the second treatment tower 140 and the liquid discharge system 270, a valve is installed on a pipeline between the turbo generator 300 and the first heat exchanger 210, and a valve is installed on a pipeline between the turbo generator 300 and the second heat exchanger 220.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a flue gas deodorization system for msw incineration power plant which characterized in that: the device comprises an air inlet system (100), a fire damper (110), a gate valve (120), a first treatment tower (130), a second treatment tower (140), a third treatment tower (150), an electric air door (160), an exhaust fan (170), a check valve (180) and an exhaust system (190) which are sequentially communicated, and further comprises a water delivery system (200), a first heat exchanger (210), a second heat exchanger (220), an oxidant medicine box (230), an alkali liquor medicine box (240), a first water pump (250), a second water pump (260), a turbine generator (300), a water tank (310) and a liquid drainage system (270); the water delivery system (200) is sequentially communicated with a first heat exchanger (210), an oxidant medicine box (230), a first water pump (250) and a first treatment tower (130), and is also sequentially communicated with a second heat exchanger (220), an alkali liquor medicine box (240), a second water pump (260) and a second treatment tower (140); a steam outlet of the steam turbine generator (300) is respectively communicated with a steam inlet of the first heat exchanger (210) and a steam inlet of the second heat exchanger (220), and the water tank (310) is respectively communicated with a steam outlet of the first heat exchanger (210) and a steam outlet of the second heat exchanger (220); the drainage system (270) is respectively communicated with the bottom of the first treatment tower (130) and the bottom of the second treatment tower (140).

2. The flue gas deodorization system for a waste incineration power plant according to claim 1, characterized in that: the fire damper (110) is a 70 ℃ fire damper.

3. The flue gas deodorization system for a waste incineration power plant according to claim 1, characterized in that: the first demisting device is characterized in that a first demisting core (131), a first spray head (132) and a first filter element (133) are sequentially arranged inside the first treatment tower (130) from top to bottom, an air inlet of the first treatment tower (130) is arranged below the first filter element (133), an air outlet of the first treatment tower (130) is arranged above the first demisting core (131), and the first spray head (132) is communicated with a first water pump (250).

4. The flue gas deodorization system for a waste incineration power plant according to claim 1, characterized in that: the inside from the top down of second tower (140) is provided with second defogging core (141), second shower head (142), second filter core (143) in proper order, the air inlet of second tower (140) sets up in the below of second filter core (143), the gas outlet of second tower (140) sets up in the top of second defogging core (141), second shower head (142) and second water pump (260) intercommunication.

5. The flue gas deodorization system for a waste incineration power plant according to claim 1, characterized in that: the inside of the third treatment tower (150) is sequentially provided with a biological filler layer (151), a photocatalytic layer (152) and an activated carbon layer (153) from top to bottom, an air inlet of the third treatment tower (150) is arranged above the biological filler layer (151), and an air outlet of the third treatment tower (150) is arranged below the activated carbon layer (153).

6. The flue gas deodorization system for a waste incineration power plant according to claim 1, characterized in that: install the valve on the pipeline between oxidant medical kit (230) and water delivery system (200), install the valve on the pipeline between alkali lye medical kit (240) and water delivery system (200), install the valve on the pipeline between first treating column (130) and drainage system (270), install the valve on the pipeline between second treating column (140) and drainage system (270), install the valve on the pipeline between turbo generator (300) and first heat exchanger (210), install the valve on the pipeline between turbo generator (300) and second heat exchanger (220).