Integrated device for flue gas desulfurization of coal-fired power plant

Abstract

The utility model provides an integrated device for flue gas desulfurization of a coal-fired power plant, and relates to the field of integrated devices for desulfurization of power plants, the integrated device comprises an integrated treatment box and a motor, the upper end of the integrated treatment box is provided with a feed inlet, the outer wall of the lower side of the integrated treatment box is provided with a gas inlet, and the outer wall of the upper side of the integrated treatment box is provided with a controller; an adsorption box is arranged in the integrated treatment box, a spraying pipe is arranged on the lower side of the adsorption box, a liquid desulfurizing agent box is arranged on the lower side of the spraying pipe, meanwhile, the spraying pipe and the liquid desulfurizing agent box are connected through a conveying pipe and a water pump, the motor is installed at the top of the integrated treatment box, and the lower end of the motor is connected with a rotating shaft; the outer side of the rotating shaft is connected with a stirring rod, and the stirring rod is positioned in the adsorption box. The flue gas desulfurization device solves the problem that the existing flue gas desulfurization device for the coal-fired power plant generally only has a single desulfurization mode in the same device, and a desulfurization agent is in a static state, so that the desulfurization effect is deviated.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated desulfurization devices for power plants, in particular to an integrated device for flue gas desulfurization in coal-fired power plants. Background Art

[0002] In coal-fired power plants, there is flue gas containing sulfur and nitrate produced by the burning coal. When it is discharged, it will damage the air environment. Therefore, it is necessary to use a flue gas desulfurization and denitrification treatment system for coal-fired power plants to discharge the existing flue gas. For this purpose, a new type of flue gas desulfurization and denitrification treatment system for coal-fired power plants has been developed. After searching, the prior art (publication number: CN214233480U) records "a flue gas desulfurization and denitrification treatment system for a coal-fired power plant, including a coal-fired furnace, one side of the coal-fired furnace is fixedly connected to a gas pipeline, and one side of the gas pipeline is installed with a desulfurization and denitrification device body. The flue gas desulfurization and denitrification treatment system for a coal-fired power plant can drive the threaded push rod to rotate by starting the motor 2 of the device. For this purpose, the threaded push rod can be rotated to drive the internal solid impurities to be slowly transported to the inside of the liquid placement box. At the same time, when in use, the depth of the liquid placement box of the device is ten centimeters lower than the depth of the lower part of the desulfurization and denitrification device body, so that when in use, it is convenient to place the solid impurities in the liquid placement box and precipitate them at the same time. For this reason, it plays a role in facilitating the cleaning of solid impurities when adding the device. At the same time, the threaded push rod of the device can drive the liquid to circulate, so as to facilitate the mixing of the flue gas."

[0003] Although the flue gas desulfurization and denitrification treatment system of coal-fired power plants in the prior art has achieved the convenience of cleaning impurities and uniform mixing of the desulfurization solution, there are still some shortcomings: the existing flue gas desulfurization devices of coal-fired power plants generally have only a single desulfurization method in the same device, resulting in deviations in the desulfurization effect of flue gas with a large sulfur content in coal-fired power plants. At the same time, the desulfurizers involved in some dry desulfurization devices are in a static state. During long-term use, the adsorption rate of the desulfurizer is different, that is, the desulfurizer at the bottom layer cannot achieve re-adsorption effect after adsorption saturation. Utility Model Content

[0004] In order to overcome the defects of the prior art, an integrated device for flue gas desulfurization in coal-fired power plants is provided to solve the problem that the existing flue gas desulfurization devices in coal-fired power plants generally have only a single desulfurization mode in the same device and the desulfurizer is in a static state, which leads to deviation in the desulfurization effect.

[0005] To achieve the above-mentioned purpose, an integrated device for flue gas desulfurization in a coal-fired power plant is provided, comprising: an integrated processing box and a motor, wherein a feed port is provided at the upper end of the integrated processing box, an air inlet is provided at the lower outer wall of the integrated processing box, and a controller is installed on the upper outer wall of the integrated processing box, an adsorption box is provided inside the integrated processing box, a spray pipe is provided at the lower side of the adsorption box, and a liquid desulfurizer box is provided at the lower side of the spray pipe, and the spray pipe and the liquid desulfurizer box are connected by a delivery pipe and a water pump, the motor is installed on the top of the integrated processing box, and a rotating shaft is connected to the lower end of the motor, and a stirring rod is connected to the outer side of the rotating shaft, and the stirring rod is located in the adsorption box.

[0006] Furthermore, a dust filter assembly is installed on the inner side of the air inlet and inside the integrated processing box, and the dust filter assembly includes an outer shell, and a filter element is provided inside the outer shell.

[0007] Furthermore, an air inlet net is provided on a side of the shell facing the air inlet, and a gap exists between the air inlet net and an inner port of the air inlet.

[0008] Furthermore, the shell and the liquid desulfurizer tank are connected via an aeration pipe, and the aeration pipe is configured as a Z-shaped structure, and aeration holes are provided on the pipe wall of the bottom horizontal pipe body of the aeration pipe.

[0009] Furthermore, a discharge port is provided on the rear wall of the integrated processing box, and a discharge door is installed outside the discharge port, and a protrusion is provided on the inner wall of the discharge door. At the same time, sealing rings are provided around the protrusion, and the height position of the discharge door matches that of the adsorption box.

[0010] Furthermore, the upper side and the rear side of the adsorption box are open ends, a solid desulfurizer is arranged inside the adsorption box, and the bottom of the adsorption box is set as a mesh plate.

[0011] Furthermore, a sleeve is rotatably connected to the outer side of the rotating shaft, a heating layer is provided between the rotating shaft and the sleeve, and a fixing rod is connected to the outer wall of the sleeve, while the outer end of the fixing rod is connected to the inner wall of the integrated processing box.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, the flue gas is first introduced into the dust filter assembly through the air inlet to achieve a preliminary filtering effect, and then enters the liquid desulfurizer box through the aeration pipe to achieve a primary desulfurization effect, and then the secondary separation effect is achieved through the water pump, delivery pipe and spray pipe. The above is the wet desulfurization operation process, and then the solid desulfurizer inside the adsorption box, through the stirring of the motor and the heating of the heating layer, the flue gas passes through the heated and active solid desulfurizer to achieve the adsorption desulfurization effect, and then the two separation effects of wet desulfurization and dry desulfurization can be achieved inside the integrated treatment box, which enhances the treatment effect of flue gas with a high sulfur content in coal-fired power plants;

[0014] 2. The motor, the rotating shaft and the stirring rod are used to stir the solid desulfurizer, so that the desulfurizers in the upper and lower layers can be switched with each other, so as to evenly contact and react with the flue gas. At the same time, the heating layer is connected to the controller to achieve heating of the desulfurizer through the heat conduction effect of the rotating shaft and the stirring rod under electric heating, thereby ensuring the adsorption efficiency of the solid desulfurizer at a certain temperature, thereby improving the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front cross-section structure of an embodiment of the utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the dust filter assembly according to an embodiment of the utility model.

[0017] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0018] Figure 4 This is a schematic diagram of the rear structure of the dust collection and processing box according to an embodiment of the present utility model.

[0019] In the figure: 1. integrated processing box; 10. discharge door; 101. bump; 102. sealing ring; 11. feed port; 12. air inlet; 13. controller; 14. adsorption box; 15. spray pipe; 16. delivery pipe; 17. water pump; 18. dust filter assembly; 181. housing; 182. air inlet net; 183. filter element; 19. liquid desulfurizer box; 191. aeration pipe; 2. motor; 21. stirring rod; 22. rotating shaft; 23. sleeve; 24. heating layer; 25. fixing rod. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4As shown, the utility model provides an integrated device for flue gas desulfurization in a coal-fired power plant, comprising: an integrated processing box 1 and a motor 2, a feed port 11 is provided at the upper end of the integrated processing box 1, an air inlet 12 is provided at the lower outer wall of the integrated processing box 1, and a controller 13 is installed on the upper outer wall of the integrated processing box 1, an adsorption box 14 is provided inside the integrated processing box 1, a spray pipe 15 is provided at the lower side of the adsorption box 14, and a liquid desulfurizer box 19 is provided at the lower side of the spray pipe 15, and the spray pipe 15 and the liquid The desulfurizer boxes 19 are connected by a delivery pipe 16 and a water pump 17. The motor 2 is installed on the top of the integrated processing box 1, and the lower end of the motor 2 is connected to a rotating shaft 22, and the outer side of the rotating shaft 22 is connected to a stirring rod 21, and the stirring rod 21 is located in the adsorption box 14. The outer side of the rotating shaft 22 is rotatably connected to a sleeve 23, and a heating layer 24 is provided between the rotating shaft 22 and the sleeve 23, and the outer wall of the sleeve 23 is connected to a fixing rod 25, and the outer end of the fixing rod 25 is connected to the inner wall of the integrated processing box 1.

[0021] In this embodiment, the integrated processing box 1 and the motor 2 constitute the main structure of the integrated device for flue gas desulfurization in a coal-fired power plant involved in this application.

[0022] Specifically, a temperature controller is provided inside the controller 13 to achieve temperature control of the heating layer 24 after electrical connection, so that the solid desulfurizer is in a suitable working environment.

[0023] Specifically, when the spray pipe 15 is in working state, the liquid desulfurizing agent box 19 at the lower side realizes the recovery of the liquid desulfurizing agent and realizes its repeated utilization.

[0024] Specifically, the rotating shaft 22 and the stirring rod 21 are made of heat-conducting materials, so as to facilitate uniform and rapid heating of the solid desulfurizer during the stirring process.

[0025] like Figure 1 and Figure 2 As shown, a dust filter assembly 18 is installed on the inner side of the air inlet 12 and inside the integrated processing box 1, and the dust filter assembly 18 includes an outer shell 181, and a filter element 183 is provided inside the outer shell 181, an air inlet net 182 is provided on the side of the outer shell 181 facing the air inlet 12, and there is a gap between the air inlet net 182 and the inner port of the air inlet 12, the outer shell 181 and the liquid desulfurizer box 19 are connected by an aeration pipe 191, and the aeration pipe 191 is set to a Z-shaped structure, and aeration holes are opened on the pipe wall of the bottom horizontal pipe body of the aeration pipe 191.

[0026] As a preferred implementation, the dust filter assembly 18 is provided to achieve a pre-filtration effect on particulate matter in the flue gas, thereby avoiding accelerated contamination of the liquid desulfurizer and thus affecting its purity.

[0027] like Figure 1 and Figure 4As shown, a discharge port is provided on the rear wall of the integrated processing box 1, and a discharge door 10 is installed outside the discharge port, and a protrusion 101 is provided on the inner wall of the discharge door 10, and a sealing ring 102 is provided around the protrusion 101, and the discharge door 10 is matched with the adsorption box 14 in height position, the upper side and the rear side of the adsorption box 14 are open ends, and a solid desulfurizer is provided inside the adsorption box 14, and the bottom of the adsorption box 14 is set as a mesh plate.

[0028] As a preferred embodiment, by providing a discharge door 10 , the solid desulfurizer in the adsorption box 14 can be discharged when it is opened, so as to facilitate replacement, and then new desulfurizer can be added from the feed port 11 .

[0029] During use, the flue gas is first introduced into the dust filter assembly through the air inlet to achieve a preliminary filtering effect, and then enters the liquid desulfurizer box through the aeration pipe to achieve a primary desulfurization effect, and then a secondary separation effect is achieved through a water pump, a delivery pipe and a spray pipe. The above is the wet desulfurization operation process, and then through the solid desulfurizer inside the adsorption box, and at the same time through the stirring of the motor and the heating of the heating layer, the flue gas passes through the heated and active solid desulfurizer to achieve an adsorption desulfurization effect, and then both wet desulfurization and dry desulfurization separation effects can be achieved inside the integrated treatment box, thereby enhancing the treatment effect on flue gas with a high sulfur content in coal-fired power plants.

[0030] The integrated device for flue gas desulfurization in coal-fired power plants of the utility model can effectively solve the problem that the existing flue gas desulfurization devices in coal-fired power plants generally have only a single desulfurization method in the same device and the desulfurizer is in a static state, which leads to deviation in the desulfurization effect. It integrates the two treatment effects of wet and dry desulfurization on the basis of the existing technology of integrated device for flue gas desulfurization in coal-fired power plants, and has heating and stirring effects at the same time, thereby further improving the desulfurization treatment effect on the flue gas of coal-fired power plants with a large sulfur content.

Claims

1. An integrated device for flue gas desulfurization in a coal-fired power plant, comprising: An integrated processing box (1) and a motor (2), wherein the upper end of the integrated processing box (1) is provided with a feed port (11), and the lower outer wall of the integrated processing box (1) is provided with an air inlet (12), and a controller (13) is installed on the upper outer wall of the integrated processing box (1), characterized in that: an adsorption box (14) is provided inside the integrated processing box (1), and a spray pipe (15) is provided on the lower side of the adsorption box (14), and a liquid desulfurization agent box (19) is provided on the lower side of the spray pipe (15), and the spray pipe (15) and the liquid desulfurization agent box (19) are connected through a delivery pipe (16) and a water pump (17), and the motor (2) is installed on the top of the integrated processing box (1), and the lower end of the motor (2) is connected to a rotating shaft (22), and the outer side of the rotating shaft (22) is connected to a stirring rod (21), and the stirring rod (21) is located in the adsorption box (14).

2. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 1, characterized in that: A dust filter assembly (18) is installed on the inner side of the air inlet (12) and inside the integrated processing box (1), and the dust filter assembly (18) comprises an outer shell (181), and a filter element (183) is arranged inside the outer shell (181).

3. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 2, characterized in that: An air intake net (182) is provided on one side of the housing (181) facing the air intake port (12), and a gap exists between the air intake net (182) and an inner port of the air intake port (12).

4. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 2, characterized in that: The shell (181) and the liquid desulfurizing agent tank (19) are connected via an aeration pipe (191), and the aeration pipe (191) is configured as a Z-shaped structure, and aeration holes are provided on the pipe wall of the bottom horizontal pipe body of the aeration pipe (191).

5. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 1, characterized in that: The integrated processing box (1) is provided with a discharge port on the rear wall thereof, and a discharge door (10) is installed outside the discharge port. A protrusion (101) is provided on the inner wall of the discharge door (10), and sealing rings (102) are provided around the protrusion (101). The height of the discharge door (10) matches that of the adsorption box (14).

6. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 1, characterized in that: The upper side and the rear side of the adsorption box (14) are open ends, a solid desulfurizing agent is provided inside the adsorption box (14), and the bottom of the adsorption box (14) is provided as a mesh plate.

7. The integrated device for flue gas desulfurization in a coal-fired power plant according to claim 1, characterized in that: The outer side of the rotating shaft (22) is rotatably connected to a sleeve (23), a heating layer (24) is provided between the rotating shaft (22) and the sleeve (23), and the outer wall of the sleeve (23) is connected to a fixing rod (25), while the outer end of the fixing rod (25) is connected to the inner wall of the integrated processing box (1).

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