CN215027617U

CN215027617U - High-efficient desulphurization unit of coal-fired flue gas

Info

Publication number: CN215027617U
Application number: CN202121221656.8U
Authority: CN
Inventors: 单以军; 林玲; 谷洪涛
Original assignee: Jiangsu Langtian Environmental Engineering Technology Service Co ltd
Current assignee: Jiangsu Langtian Environmental Engineering Technology Service Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-07
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses a high-efficient desulphurization unit of coal-fired flue gas, store the bucket including desulfurizing tower, circulating water tank and alkali lye, transversely be fixed with the filter screen in the desulfurizing tower, the side top of filter screen is fixed with the shower nozzle, the interior top surface of desulfurizing tower is fixed with gaseous detector, the top of desulfurizing tower is fixed with the blast pipe, be equipped with solenoid valve one in the blast pipe, the interior bottom surface of circulating water tank is equipped with lime stone and opposite side and is fixed with the circulating pump, one side that the bucket was stored to alkali lye is fixed with the water-feeding pump, the water-feeding pump is connected with the shower nozzle through the feed pipe. This high-efficient desulphurization unit of coal-fired flue gas simple structure, the modern design, convenient to use, the desulfurization has accomplished the low consumption high efficiency, does not have corruption and jam to water pump, pipeline, equipment simultaneously in the circulation process, the equipment operation and the maintenance of being convenient for, the regeneration of alkali lye and the precipitation of desulfurization sediment take place outside the desulfurizing tower, have reduced the possibility of interior scale deposit of tower, and the current equipment of adaptation has been compared, has reduced the desulfurization cost.

Description

High-efficient desulphurization unit of coal-fired flue gas

Technical Field

The utility model belongs to the technical field of desulphurization unit, concretely relates to high-efficient desulphurization unit of coal-fired flue gas.

Background

With the development of industry, the consumption of energy is gradually increased, and the emission of pollutants in the atmosphere is correspondingly increased. Dust and sulfur dioxide discharged from coal-fired boilers seriously pollute the environment which we rely on for survival. The atmosphere in China is mainly coal-smoke type pollution, and the harm of dust and acid rain is the greatest. Therefore, the purification of dust and sulfur dioxide in coal-fired flue gas is a key problem in China for improving the quality of atmospheric air and reducing acid rain. However, the existing coal-fired flue gas desulfurization device has the defects of low desulfurization efficiency and high operating cost, so that the design of a coal-fired flue gas high-efficiency desulfurization device is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient desulphurization unit of coal-fired flue gas to solve the problem that current desulphurization unit desulfurization efficiency is low, the working costs is high.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-efficient desulphurization unit of coal-fired flue gas, stores the bucket including desulfurizing tower, circulating water pond and alkali lye, bottom one side of desulfurizing tower is equipped with the intake pipe, transversely be fixed with the filter screen in the desulfurizing tower, the side top of filter screen is fixed with the shower nozzle, the internal top surface of desulfurizing tower is fixed with gaseous detector, the top of desulfurizing tower is fixed with the blast pipe, be equipped with solenoid valve one in the blast pipe, the bottom of desulfurizing tower is connected with the circulating water pond through the drain pipe, the interior bottom surface in circulating water pond is equipped with limestone and opposite side and is fixed with the circulating pump, the circulating pump passes through circulating pipe and is connected with alkali lye storage bucket, one side that the bucket was stored to alkali lye is fixed with the water-feeding pump, the water-feeding pump is connected with the shower nozzle through the feed pipe.

Preferably, the medial surface that the bucket was stored to alkali lye is fixed with liquid level monitor and pH value monitor respectively, the top that the bucket was stored to alkali lye is fixed with automatic alkali supplementation jar, the bottom mounting that automatic alkali supplementation jar was had solenoid valve two, be equipped with alkali lye in the alkali lye storage bucket, the bottom that the bucket was stored to alkali lye is fixed with the support column, pH value monitor and two electric connection of solenoid valve, alkali lye is arbitrary one of alkali metal salt class aqueous solution.

Preferably, the gas detector is a sulfur dioxide gas detector of SS33-76357 type, and the gas detector is electrically connected with the solenoid valve.

Preferably, the filter screen is equipped with two altogether, two the interval of filter screen is not less than 20 centimetres and the material is the stainless steel, wherein, is located the top the aperture of filter screen is 1 millimeter, is located the below the aperture of filter screen is 2 millimeters.

Preferably, the liquid level monitor is electrically connected with the circulating pump.

Preferably, the circulating pump and the water supply pump are corrosion-resistant pumps, and the inner surfaces of the drain pipe, the circulating water pipe and the water supply pipe are coated with corrosion-resistant coatings.

The utility model discloses a technological effect and advantage: this high-efficient desulphurization unit of coal-fired flue gas simple structure, the modern design, high durability and convenient use, through setting up the desulfurizing tower, circulating water pond and alkali lye storage bucket, make the device can recycle, what the desulfurization actually consumed is Ca (OH)2, the desulfurization has been accomplished and has been consumed the high efficiency, simultaneously to the water pump in the cycle process, the pipeline, equipment does not have corruption and jam, the equipment operation and the maintenance of being convenient for, the regeneration of alkali lye and the precipitation of desulfurization sediment take place outside the desulfurizing tower, the possibility of scale deposit in the tower has been reduced, relatively adapt to current equipment, the desulfurization cost is reduced.

Drawings

Fig. 1 is a vertical cross-sectional view of the present invention.

In the figure: 1. a desulfurizing tower; 2. a circulating water tank; 3. an alkali liquor storage barrel; 4. an air inlet pipe; 5. filtering with a screen; 6. a spray head; 7. a gas detector; 8. an exhaust pipe; 9. a first electromagnetic valve; 10. a drain pipe; 11. a circulating water pipe; 12. a circulation pump; 13. a water supply pipe; 14. a feed pump; 15. a liquid level monitor; 16. a pH value monitor; 17. an automatic alkali supplementing tank; 18. a second electromagnetic valve; 19. alkali liquor; 20. and (4) a support column.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a coal-fired flue gas high-efficiency desulfurization device as shown in the figure, which comprises a desulfurization tower 1, a circulating water tank 2 and an alkali liquor storage barrel 3, an air inlet pipe 4 is arranged at one side of the bottom end of the desulfurizing tower 1, a filter screen 5 is transversely fixed in the desulfurizing tower 1, a spray head 6 is fixed on the lateral upper part of the filter screen 5, a gas detector 7 is fixed on the inner top surface of the desulfurizing tower 1, an exhaust pipe 8 is fixed at the top of the desulfurizing tower 1, a first electromagnetic valve 9 is arranged in the exhaust pipe 8, the bottom of the desulfurizing tower 1 is connected with a circulating water tank 2 through a drain pipe 10, limestone is arranged on the inner bottom surface of the circulating water tank 2, a circulating pump 12 is fixed on the other side, the circulating pump 12 is connected with the alkali liquor storage barrel 3 through a circulating water pipe 11, a water feeding pump 14 is fixed on one side of the alkali liquor storage barrel 3, and the water feeding pump 14 is connected with the spray head 6 through a water feeding pipe 13.

In addition, the medial surface of alkali lye storage bucket 3 is fixed with liquid level monitor 15 and pH value monitor 16 respectively, the top of alkali lye storage bucket 3 is fixed with automatic alkali supplementation jar 17, the bottom mounting of automatic alkali supplementation jar 17 has two 18 solenoid valves, be equipped with alkali lye 19 in the alkali lye storage bucket 3, the bottom of alkali lye storage bucket 3 is fixed with support column 20, pH value monitor 16 and two 18 electric connection of solenoid valve, alkali lye 19 is arbitrary one in the alkali metal salt class aqueous solution, and the liquid level height and the pH valve of alkali lye 19 in the convenient real-time supervision alkali lye storage bucket 3 to can realize automatically regulated, contact and take place chemical reaction with coal-fired flue gas in spraying to desulfurizing tower 1 through spraying alkali lye 19, accomplish the absorption to sulfur dioxide. Gas detector 7 adopts is SS33-76357 type sulfur dioxide gas detector, gas detector 7 and a 9 electric connection of solenoid valve have small, easy to assemble's advantage, simultaneously, when detecting still to contain sulfur dioxide in the coal-fired flue gas, a 9 of solenoid valve are closed, and gas can not discharge, and until sulfur dioxide content reaches the settlement standard, be favorable to improving desulfurization effect, the environmental protection.

It is worth mentioning that filter screen 5 is equipped with two, two altogether filter screen 5's interval is not less than 20 centimetres and the material is the stainless steel, wherein, is located the top filter screen 5's aperture is 1 millimeter, is located the below filter screen 5's aperture is 2 millimeters, and filter screen 5 through being located the below carries out cooling and preliminary treatment to coal-fired flue gas, then filter screen 5 of rethread top carries out the fine processing, is favorable to improving desulfurization effect and desulfurization efficiency. The liquid level monitor 15 is electrically connected with the circulating pump 12, and when the liquid level monitor 15 monitors that the liquid level of the alkali liquor 19 in the alkali liquor storage barrel 3 is lower than a set value, the circulating pump 12 is conveniently started to pump the regenerated absorption liquid in the circulating water pool 2 into the alkali liquor storage barrel 3 by itself. The circulating pump 12 and the water feed pump 14 are corrosion-resistant pumps, and the inner surfaces of the drain pipe 10, the circulating water pipe 11 and the water feed pipe 13 are coated with corrosion-resistant coatings, so that the corrosion resistance is improved, and the service life is prolonged.

The working principle is as follows: when the coal-fired flue gas high-efficiency desulfurization device is used, firstly, the water feeding pump 14 is started, the alkali liquor 19 in the alkali liquor storage barrel 3 is pumped into the water feeding pipe 13, and is sprayed into the desulfurizing tower 1 through the spray head 6, the alkali liquor 19 passes through the filter screen 5 and forms a water film on the filter screen 5, at the moment, the coal-fired flue gas is conveyed into the desulfurizing tower 1 through the air inlet pipe 4, the flue gas rises to be contacted with the alkali liquor 19, the alkali liquor 19 absorbs sulfur dioxide in the flue gas, then the flue gas continuously rises, after the detection of the gas detector 7, the electromagnetic valve I9 is opened to discharge the gas when the sulfur dioxide content reaches the standard, the alkali liquor 19 absorbing the sulfur dioxide enters the circulating water tank 2 through the drain pipe 10, the alkali liquor 19 absorbing the sulfur dioxide is regenerated by lime, the regenerated alkali liquor is pumped into the alkali liquor storage barrel 3 through the circulating pump 12 for recycling, and the sulfur dioxide is separated out in the form of gypsum to generate calcium sulfite and gypsum.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a high-efficient desulphurization unit of coal-fired flue gas, includes desulfurizing tower (1), circulating water pond (2) and alkali lye storage bucket (3), its characterized in that: an air inlet pipe (4) is arranged at one side of the bottom end of the desulfurizing tower (1), a filter screen (5) is transversely fixed in the desulfurizing tower (1), a spray head (6) is fixed on the lateral upper part of the filter screen (5), a gas detector (7) is fixed on the inner top surface of the desulfurizing tower (1), an exhaust pipe (8) is fixed at the top of the desulfurizing tower (1), a first electromagnetic valve (9) is arranged in the exhaust pipe (8), the bottom of the desulfurizing tower (1) is connected with a circulating water pool (2) through a drain pipe (10), limestone is arranged on the inner bottom surface of the circulating water tank (2), a circulating pump (12) is fixed on the other side of the circulating water tank, the circulating pump (12) is connected with the alkali liquor storage barrel (3) through a circulating water pipe (11), a water feeding pump (14) is fixed on one side of the alkali liquor storage barrel (3), and the water feeding pump (14) is connected with the spray head (6) through a water feeding pipe (13).

2. The coal-fired flue gas high-efficiency desulfurization device according to claim 1, characterized in that: the medial surface of alkali lye storage bucket (3) is fixed with liquid level monitor (15) and pH value monitor (16) respectively, the top of alkali lye storage bucket (3) is fixed with automatic alkali supplementation jar (17), the bottom mounting of automatic alkali supplementation jar (17) has two (18) of solenoid valve, be equipped with alkali lye (19) in alkali lye storage bucket (3), the bottom of alkali lye storage bucket (3) is fixed with support column (20), pH value monitor (16) and two (18) electric connection of solenoid valve, alkali lye (19) are arbitrary one of alkali metal salt class aqueous solution.

3. The coal-fired flue gas high-efficiency desulfurization device according to claim 1, characterized in that: the gas detector (7) adopts a SS33-76357 type sulfur dioxide gas detector, and the gas detector (7) is electrically connected with the first electromagnetic valve (9).

4. The coal-fired flue gas high-efficiency desulfurization device according to claim 1, characterized in that: filter screen (5) are equipped with two altogether the interval of filter screen (5) is not less than 20 centimetres and the material is the stainless steel, wherein, is located the top the aperture of filter screen (5) is 1 millimeter, is located the below the aperture of filter screen (5) is 2 millimeters.

5. The coal-fired flue gas high-efficiency desulfurization device according to claim 2, characterized in that: the liquid level monitor (15) is electrically connected with the circulating pump (12).

6. The coal-fired flue gas high-efficiency desulfurization device according to claim 1, characterized in that: the circulating pump (12) and the water supply pump (14) are corrosion-resistant pumps, and the inner surfaces of the drain pipe (10), the circulating water pipe (11) and the water supply pipe (13) are coated with corrosion-resistant coatings.