Dry desulfurization device

Abstract

The utility model discloses a dry desulfurization device, which relates to the technical field of flue gas desulfurization and comprises a reaction tank, a gas inlet seat for collecting boiler flue gas is arranged on one side of the reaction tank, a gas outlet seat for discharging purified boiler flue gas is arranged on the other side of the reaction tank, and a rotating motor is arranged at the upper end of the reaction tank. The lower end of the reaction tank is communicated with a circulating mechanism used for circulating alkali powder, the output end of the rotating motor is provided with a material screening structure used for screening caked alkali powder, the driving pump is arranged to drive the alkali powder to continuously move in the reaction tank, the filter screen rotates to drive the alkali powder to be evenly distributed, the desulfurization reaction efficiency is improved, the caked alkali powder is intercepted through the intercepting block, and the desulfurization efficiency is improved. And the caked alkali powder losing the reaction capacity is concentrated through the concentration box, so that workers can conveniently recover the caked alkali powder in time, and the alkali powder is supplemented.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology, specifically a dry desulfurization device. Background Technology

[0002] Dry desulfurization is a desulfurization method that uses dry powder or granular absorbent to react with sulfur dioxide in flue gas to achieve desulfurization. Dry desulfurization has advantages such as relatively simple process, no need to treat sewage and acid, low energy consumption and low corrosiveness. Dry desulfurization equipment is simple, operates stably, and has high desulfurization accuracy. It is widely used in nitrogen fertilizer plants, methanol plants, city gas plants and petrochemical plants with various raw gas feedstocks.

[0003] For example, a dry desulfurization device for boiler flue gas described in patent CN222624173U, which is equipped with a collection box, a reagent box, a feeding pipe, a feeding motor, a conveying pipe and a spiral auger, realizes the recycling of alkali powder. Under the use of this dry desulfurization device for boiler flue gas, large-volume agglomerated carbon powder will appear in the circulation of alkali powder, which can easily cause blockage of the material distribution plate and reduce the reaction quality.

[0004] Based on this, a dry desulfurization device is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a dry desulfurization device to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dry desulfurization device includes a reaction tank. One side of the reaction tank is provided with an air inlet for collecting boiler flue gas, and the other side of the reaction tank is provided with an air outlet for discharging purified boiler flue gas. A rotating motor is provided at the upper end of the reaction tank, and a circulation mechanism for circulating alkali powder is connected to the lower end of the reaction tank. The output end of the rotating motor is provided with a screening structure for screening out agglomerated alkali powder.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the circulation mechanism includes a first return pipe, which is connected to the lower end of the reaction tank, and a drive pump is connected to the side of the first return pipe. The upper end of the drive pump is connected to a second return pipe, and the side of the second return pipe is connected to the interior of the reaction tank.

[0010] In one alternative embodiment: the screening structure includes a transmission rod, the upper end of which is fixedly connected to the output end of a rotating motor, and the lower end of which is fixedly connected to a filter assembly.

[0011] In an optional scheme, the filtering assembly comprises a filtering screen, the filtering screen is fixedly connected with the lower end of the transmission rod, the filtering screen is provided with a rotating block on the side, the rotating block is rotatably connected with the inner wall of the reaction tank, and the filtering screen is provided with a scraping element.

[0012] In an optional scheme, the scraping element comprises an intercepting block, the intercepting block is arranged on the upper side of the filtering screen, the intercepting block is in frictional contact with the filtering screen, the side of the intercepting block is fixedly connected with the inner wall of the reaction tank, and the side of the reaction tank is provided with a concentrating unit.

[0013] In an optional scheme, the concentrating unit comprises a concentrating box, the upper end of the concentrating box is provided with a closing cover, the side of the concentrating box is provided with an opening communicated with the reaction tank, and the concentrating box is connected with the reaction tank through the fixing bolt.

[0014] In an optional scheme, the surface of the intercepting block is uniformly provided with a plurality of filtering holes.

[0015] In an optional scheme, the surface of the closing cover is provided with a sealing sleeve.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The alkali powder in the reaction tank is continuously moved by the driving pump, the alkali powder is uniformly distributed by the rotation of the filtering screen, and the desulfurization reaction efficiency is improved.

[0018] 2. The caked alkali powder is intercepted by the intercepting block, the caked alkali powder losing the reaction capacity is concentrated in the concentrating box, the caked alkali powder is conveniently recycled by the staff, and the alkali powder is supplemented. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model.

[0020] Figure 2 It is a structural schematic view of the reaction tank of the utility model.

[0021] Figure 3 It is a structural schematic view of the filtering screen of the utility model.

[0022] Figure 4 It is a structural schematic view of the intercepting block of the utility model.

[0023] Marked with a drawing: 101. Reaction tank, 102. Air inlet seat, 103. Air outlet seat, 104. Rotating motor, 201. Transmission rod, 202. Filtering screen, 203. Rotating block, 204. Intercepting block, 205. Filtering hole, 301. Concentrating box, 302. Closing cover, 303. Fixing bolt, 401. First return pipe, 402. Driving pump, 403. Second return pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the utility model in combination with the drawings and examples.

[0025] In one embodiment, as shown in Figures 1-3 A dry desulfurization device, comprising a reaction tank 101, one side of the reaction tank 101 is provided with an air inlet seat 102 for collecting boiler flue gas, the other side of the reaction tank 101 is provided with an air outlet seat 103 for discharging the purified boiler flue gas, the upper end of the reaction tank 101 is provided with a rotating motor 104, the lower end of the reaction tank 101 is communicated with a circulating mechanism for circulating alkali powder, the output end of the rotating motor 104 is provided with a screening structure for screening caked alkali powder, the filtered flue gas is collected through the air inlet seat 102, the boiler flue gas enters the inside of the reaction tank 101 and reacts with the alkali powder arranged in the inside of the reaction tank 101, the boiler flue gas after the desulfurization reaction is discharged through the air outlet seat 103, and the desulfurization work is completed;

[0026] In one embodiment, as shown in Figure 1 and Figure 2 The circulating mechanism comprises a first return pipe 401, the first return pipe 401 is communicated with the lower end of the reaction tank 101, the side of the first return pipe 401 is communicated with a driving pump 402, the upper end of the driving pump 402 is communicated with a second return pipe 403, the side of the second return pipe 403 is communicated with the inside of the reaction tank 101, power is provided through the driving pump 402, when the alkali powder falls on the bottom of the reaction tank 101, the alkali powder is concentrated and sucked through the first return pipe 401, and the alkali powder is discharged into the inside of the reaction tank 101 again through the second return pipe 403;

[0027] In one embodiment, as shown in Figure 2 and Figure 3 The screening structure comprises a transmission rod 201, the upper end of the transmission rod 201 is fixedly connected with the output end of the rotating motor 104, and the lower end of the transmission rod 201 is fixedly connected with a filtering assembly, the transmission rod 201 is driven to rotate through the rotating motor 104, and power is transmitted through the transmission rod 201;

[0028] In one embodiment, as shown in Figure 2 and Figure 3As shown, the filter assembly includes a filter screen 202 fixedly connected to the lower end of the transmission rod 201, the side of the filter screen 202 is provided with a rotating block 203, the rotating block 203 is rotatably connected to the inner wall of the reaction tank 101, the filter screen 202 is provided with a scraping element, the rotating block 203 provides the filter screen 202 with rotation conditions, the transmission rod 201 drives the filter screen 202 to rotate, the filter screen 202 rotates to scatter the alkali powder discharged by the air outlet seat 103, and the alkali powder reacts with the boiler flue gas in the reaction tank 101 again through the filter screen 202;

[0029] In one embodiment, as shown in Figure 3 and Figure 4 As shown, the scraping element includes an intercepting block 204 provided on the upper side of the filter screen 202, the intercepting block 204 is in frictional contact with the filter screen 202, the side of the intercepting block 204 is fixedly connected to the inner wall of the reaction tank 101, the side of the reaction tank 101 is provided with a concentrating unit, the intercepting block 204 guides the alkali powder at the upper end of the filter screen 202, so that the reaction of the alkali powder with the boiler flue gas is more uniform, and the intercepting block 204 intercepts the caked alkali powder to provide conditions for the staff to recycle.

[0030] In one embodiment, as shown in Figure 3 and Figure 4 As shown, the concentrating unit includes a concentrating box 301, the upper end of the concentrating box 301 is provided with a closing cover 302, the side of the concentrating box 301 is provided with an opening communicated with the reaction tank 101, the concentrating box 301 is connected to the reaction tank 101 through the fixing bolt 303, the caked alkali powder intercepted by the intercepting block 204 enters the inside of the concentrating box 301 through the opening in the side of the concentrating box 301, and the caked alkali powder is recycled by the recycling concentrating box 301.

[0031] The above embodiment discloses a dry desulfurization device, wherein the filtered flue gas is collected by the air inlet seat 102, the boiler flue gas enters the inside of the reaction tank 101, and the alkali powder provided in the inside of the reaction tank 101 is subjected to a desulfurization reaction, the boiler flue gas after the desulfurization reaction is discharged through the air outlet seat 103 to complete the desulfurization work, power is provided by the driving pump 402, when the alkali powder falls to the bottom of the reaction tank 101, the alkali powder is concentrated and sucked by the first back feeding pipe 401, the alkali powder is discharged into the inside of the reaction tank 101 again by the second back feeding pipe 403, the rotating block 203 provides the filter screen 202 with rotation conditions, the transmission rod 201 drives the filter screen 202 to rotate, the filter screen 202 rotates to scatter the alkali powder discharged by the air outlet seat 103, the alkali powder reacts with the boiler flue gas in the reaction tank 101 again through the filter screen 202, the intercepting block 204 guides the alkali powder at the upper end of the filter screen 202, so that the reaction of the alkali powder with the boiler flue gas is more uniform, and the intercepting block 204 intercepts the caked alkali powder to provide conditions for the staff to recycle.

[0032] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dry desulfurization device, comprising a reaction tank (101), one side of the reaction tank (101) is provided with an air inlet seat (102) for collecting boiler flue gas, the other side of the reaction tank (101) is provided with an air outlet seat (103) for discharging the purified boiler flue gas, and the upper end of the reaction tank (101) is provided with a rotating motor (104), characterized in that, The lower end of the reaction tank (101) is communicated with a circulating mechanism for circulating alkali powder, the output end of the rotating motor (104) is provided with a screening structure for screening caked alkali powder, the screening structure comprises a transmission rod (201), the upper end of the transmission rod (201) is fixedly connected with the output end of the rotating motor (104), the lower end of the transmission rod (201) is fixedly connected with a filtering assembly, the filtering assembly comprises a filter screen (202), the filter screen (202) is fixedly connected with the lower end of the transmission rod (201), the filter screen (202) is provided with a rotating block (203) on the side surface, the rotating block (203) is rotatably connected with the inner wall of the reaction tank (101), and the filter screen (202) is provided with a scraping element.

2. A dry desulphurization device according to claim 1, characterized in that The circulating mechanism comprises a first return pipe (401), the first return pipe (401) is communicated with the lower end of the reaction tank (101), the side surface of the first return pipe (401) is communicated with a driving pump (402), the upper end of the driving pump (402) is communicated with a second return pipe (403), and the side surface of the second return pipe (403) is communicated with the inside of the reaction tank (101).

3. A dry desulphurization device according to claim 1, characterized in that The scraping element comprises an intercepting block (204), the intercepting block (204) is arranged on the upper side of the filter screen (202), the intercepting block (204) is in frictional contact with the filter screen (202), the side surface of the intercepting block (204) is fixedly connected with the inner wall of the reaction tank (101), and the side surface of the reaction tank (101) is provided with a concentrating unit.

4. A dry desulphurisation apparatus according to claim 3, characterised in that The concentrating unit comprises a concentrating box (301), the upper end of the concentrating box (301) is provided with a closing cover (302), the side surface of the concentrating box (301) is provided with an opening communicated with the reaction tank (101), and the concentrating box (301) is connected with the reaction tank (101) through fixing bolts (303).

5. A dry desulphurization device according to claim 3, characterized in that The surface of the intercepting block (204) is uniformly provided with a plurality of filter holes (205).

6. A dry desulphurization device according to claim 4, characterized in that The surface of the closing cover (302) is provided with a sealing sleeve.

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