Small flue gas dust removal and desulfurization device

Abstract

The utility model discloses a small flue gas dedusting and desulfurizing device which comprises a spraying box, a flue gas inlet pipe is arranged on the peripheral wall, close to the bottom, of the spraying box in a penetrating mode, a flue gas outlet pipe is arranged on the top of the spraying box in a penetrating mode, and a spraying pipe is fixedly arranged on the outer wall, located above the flue gas inlet pipe, of the spraying box in a penetrating mode. A plurality of spray heads are mounted on the outer wall, located in the spray box, of the spray pipe, and an opening in the bottom end of the spray box is connected with two liquid discharge pipes through a tee joint; when the device is used, reaction liquid collected at the bottom of the spraying box enters the two barrels through the two liquid discharging pipes respectively, is filtered by the filtering mechanism and then is discharged into the liquid storage box through the funnel, so that the reaction liquid is recycled, and when the device is operated, only the corresponding first valve needs to be closed, so that the reaction liquid can be recycled. The filter mechanism in one barrel can be cleaned or replaced only by rotating the filter mechanism in the other barrel, the filter mechanism in the other barrel can still operate normally, flue gas treatment of the device cannot be affected, reaction liquid in the spraying box cannot leak, and the device is more convenient to use.

Description

Technical Field

[0001] This utility model relates to a flue gas treatment device, specifically a small flue gas dust removal and desulfurization device. Background Technology

[0002] When coal-fired boilers are in use, the flue gas they discharge usually contains a large amount of dust and sulfur dioxide. Therefore, it is necessary to treat the flue gas for dust removal and desulfurization in order to avoid serious air pollution caused by the direct emission of flue gas.

[0003] A search revealed that patent CN221637748U discloses a flue gas desulfurization and dust removal device, which is equipped with a water pump, spray pipes, and nozzles. When flue gas enters the tank through the inlet pipe, the water pump is activated, and the reaction liquid in the water tank is pumped to the spray pipe through the liquid extraction pipe. Then, the reaction liquid is sprayed out through the nozzles to flush the flue gas. On the one hand, the reaction liquid reacts chemically with the sulfides, and on the other hand, the dust is removed. Finally, the flushed flue gas is discharged through the exhaust pipe.

[0004] While the above solution can desulfurize and reduce dust in flue gas by spraying the reaction liquid, and can filter the reaction liquid flowing back into the water tank using a filter plate to achieve recycling of the reaction liquid, when the filter plate needs to be cleaned or replaced, the operation of the device must be stopped and the reaction liquid in the tank emptied first. Otherwise, the unfiltered reaction liquid in the tank will flow directly into the water tank, which can easily cause blockage of the water pump and nozzles. In addition, the reaction liquid in the tank can easily flow out of the tank through the groove where the filter plate is removed, making it inconvenient to use and requiring improvement. Utility Model Content

[0005] The purpose of this invention is to provide a small-scale flue gas dust removal and desulfurization device to solve the problems mentioned in the background art.

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

[0007] A small-scale flue gas dust removal and desulfurization device includes a spray box. An inlet pipe passes through the outer peripheral wall near the bottom of the spray box, and an outlet pipe passes through the top of the spray box. A spray pipe is fixedly installed on the outer wall of the spray box above the inlet pipe. Multiple nozzles are installed on the outer wall of the spray pipe inside the spray box. The bottom opening of the spray box is connected to two drain pipes via a T-junction. Each drain pipe is equipped with a first valve. A cylindrical body is fixedly fitted to the outlet end of each drain pipe. A filter mechanism is detachably installed on the cylindrical body. A funnel is fixedly installed at the bottom of the cylindrical body. A storage tank is located below the spray box. The bottom ends of the two funnels are fixedly connected to the top of the storage tank. A circulation pump is located outside the storage tank. The inlet end of the circulation pump is connected to the storage tank, and the outlet end of the circulation pump is connected to the spray pipe.

[0008] As a further embodiment of this utility model: the filtration mechanism includes a filter cylinder located inside the cylinder body, the outer peripheral wall of the filter cylinder is provided with a plurality of filter holes, one end of the filter cylinder is detachably sleeved on the outlet end of the drain pipe, the other end of the filter cylinder is fixedly sleeved with an end sleeve, the end of the cylinder body away from the drain pipe is provided with a threaded hole, the outer wall of the end sleeve is connected to the threaded hole through an external thread, and a handle is fixedly installed on the end face of the end sleeve.

[0009] As a further embodiment of this utility model: the filter sleeve is fitted with a first sealing ring on the inner wall of the end of the drain pipe, the inner wall of the first sealing ring is in contact with the outer wall of the drain pipe, and the end sleeve is fitted with a second sealing ring on the outer wall of the body, the second sealing ring is in contact with the end face of the body.

[0010] As a further embodiment of this utility model: the water inlet end of the spray pipe is connected to a return pipe and a replenishment pipe via a tee, a third valve is installed on the return pipe, the water inlet end of the return pipe is connected to the water outlet end of the circulation pump, and a fourth valve is installed on the replenishment pipe.

[0011] As a further improvement of this utility model: a drain pipe is fixedly connected to the bottom of the outer wall of the liquid storage tank, and a second valve is installed on the drain pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, the reaction liquid collected at the bottom of the spray box enters two cylinders through two drain pipes, is filtered by the filtration mechanism, and then discharged into the storage tank through a funnel for recycling. When the device is running, the filtration mechanism in the corresponding cylinder can be cleaned or replaced simply by closing the corresponding first valve, while the filtration mechanism in the other cylinder can still operate normally without affecting the device's treatment of flue gas. Furthermore, the reaction liquid in the spray box will not leak, making it more convenient to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a small flue gas dust removal and desulfurization device.

[0015] Figure 2 for Figure 1 A sectional view.

[0016] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0017] The components include: spray box 1, inlet pipe 2, outlet pipe 3, spray pipe 4, nozzle 5, drain pipe 6, first valve 7, cylinder 8, end sleeve 9, filter cylinder 10, filter hole 11, first sealing ring 12, second sealing ring 13, funnel 14, storage tank 15, drain pipe 16, second valve 17, circulation pump 18, return pipe 19, third valve 20, replenishment pipe 21, fourth valve 22, and handle 23. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0022] Please see Figures 1-3In this embodiment of the present invention, a small-scale flue gas dust removal and desulfurization device includes a spray box 1. An inlet pipe 2 passes through the outer peripheral wall of the spray box 1 near its bottom. An outlet pipe 3 passes through the top of the spray box 1. A spray pipe 4 is fixedly installed on the outer wall of the spray box 1 above the inlet pipe 2. Multiple nozzles 5 are installed on the outer wall of the spray pipe 4 inside the spray box 1. The bottom opening of the spray box 1 is connected to two drain pipes 6 via a tee. Each drain pipe 6 is equipped with a first valve. Door 7, the outlet end of the drain pipe 6 is fixedly sleeved with a cylinder 8, a filter mechanism is detachably installed on the cylinder 8, a funnel 14 is fixedly installed at the bottom of the cylinder 8, a storage tank 15 is installed below the spray box 1, the bottom ends of the two funnels 14 are fixedly connected to the top of the storage tank 15, a circulation pump 18 is installed on the outside of the storage tank 15, the inlet end of the circulation pump 18 is connected to the storage tank 15, and the outlet end of the circulation pump 18 is connected to the spray pipe 4.

[0023] By adopting the above-mentioned scheme, when the circulating pump 18 and the two first valves 7 are turned on, the circulating pump 18 can draw the reaction liquid in the storage tank 15 into the spray pipe 4, so that the reaction liquid can be atomized and sprayed out through the nozzle 5. The flue gas entering the spray box 1 through the flue gas inlet pipe 2 will come into contact with the atomized reaction liquid, thereby desulfurizing and dust reducing the flue gas. After that, the flue gas is discharged through the flue gas outlet pipe 3. The reaction liquid collected at the bottom of the spray box 1 will enter the two cylinders 8 through the two drain pipes 6 respectively. After being filtered by the filter mechanism, it will be discharged into the storage tank 15 through the funnel 14 for recycling. When the device is running, only the corresponding first valve 7 needs to be closed to clean or replace the filter mechanism in the cylinder 8, while the filter mechanism in the other cylinder 8 can still operate normally without affecting the device's treatment of flue gas. Moreover, the reaction liquid in the spray box 1 will not leak, making it more convenient to use.

[0024] Specific combination Figure 3 In one embodiment of the present invention, the filtration mechanism includes a filter cylinder 10 located inside a cylindrical body 8. A plurality of filter holes 11 are provided through the outer peripheral wall of the filter cylinder 10. One end of the filter cylinder 10 is detachably sleeved on the outlet end of the drain pipe 6. An end sleeve 9 is fixedly sleeved on the other end of the filter cylinder 10. A threaded hole is provided at the end of the cylindrical body 8 away from the drain pipe 6. The outer wall of the end sleeve 9 is connected to the threaded hole through an external thread. A handle 23 is fixedly installed on the end face of the end sleeve 9.

[0025] By rotating the end sleeve 9 with handle 23, the end sleeve 9 can be disassembled and assembled on the cylinder 8 by utilizing the fit between the external thread and the threaded hole, thus facilitating the disassembly and assembly of the filter cartridge 10. The operation is simple and quick.

[0026] Specifically, in conjunction with embodiment 3, based on the previous embodiment, the filter cartridge 10 is fitted with a first sealing ring 12 on the inner wall of the end of the drain pipe 6. The inner wall of the first sealing ring 12 is in contact with the outer wall of the drain pipe 6. The end sleeve 9 is fitted with a second sealing ring 13 on the outer wall of the cylindrical body 8. The second sealing ring 13 is in contact with the end face of the cylindrical body 8.

[0027] The first sealing ring 12 ensures the sealing of the connection between the filter cartridge 10 and the drain pipe 6, and the second sealing ring 13 ensures the sealing of the connection between the cylinder 8 and the end sleeve 9, thereby preventing leakage of the reaction liquid.

[0028] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, the water inlet of the spray pipe 4 is connected to a return pipe 19 and a replenishment pipe 21 via a T-junction. A third valve 20 is installed on the return pipe 19, and the water inlet of the return pipe 19 is connected to the water outlet of the circulation pump 18. A fourth valve 22 is installed on the replenishment pipe 21. When the reaction liquid in the storage tank 15 is insufficient or needs to be replaced, the circulation pump 18 and the third valve 20 are closed, and the fourth valve 22 is opened. Then, the new reaction liquid can be pumped into the spray pipe 4 through the replenishment pipe 21 by an external water pump. The operation is simple and convenient.

[0029] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, a drain pipe 16 is fixedly connected to the bottom of the outer wall of the storage tank 15. A second valve 17 is installed on the drain pipe 16. When it is necessary to replace the reaction liquid in the storage tank 15, the second valve 17 is opened, and the existing reaction liquid in the storage tank 15 can be discharged through the drain pipe 16. The operation is simple and convenient.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compact flue gas dedusting and desulfurization device, characterized in that: The system includes a spray box (1), with an inlet pipe (2) passing through the outer peripheral wall near the bottom of the spray box (1), an outlet pipe (3) passing through the top of the spray box (1), and a spray pipe (4) fixedly passing through the outer wall of the spray box (1) above the inlet pipe (2). Multiple nozzles (5) are installed on the outer wall of the spray pipe (4) inside the spray box (1). The bottom opening of the spray box (1) is connected to two drain pipes (6) via a tee. Each drain pipe (6) is equipped with a first valve (7). A cylinder (8) is fixedly sleeved on the water outlet end. A filter mechanism is detachably installed on the cylinder (8). A funnel (14) is fixedly installed at the bottom of the cylinder (8). A liquid storage tank (15) is installed below the spray box (1). The bottom ends of the two funnels (14) are fixedly connected to the top of the liquid storage tank (15). A circulation pump (18) is installed on the outside of the liquid storage tank (15). The water inlet end of the circulation pump (18) is connected to the liquid storage tank (15). The water outlet end of the circulation pump (18) is connected to the spray pipe (4).

2. A compact flue gas dedusting and desulfurizing device according to claim 1, characterized in that: The filtration mechanism includes a filter cartridge (10) located inside the cylinder (8). The outer peripheral wall of the filter cartridge (10) is provided with a plurality of filter holes (11). One end of the filter cartridge (10) is detachably sleeved on the outlet end of the drain pipe (6). The other end of the filter cartridge (10) is fixedly sleeved with an end sleeve (9). The end of the cylinder (8) away from the drain pipe (6) is provided with a threaded hole. The outer wall of the end sleeve (9) is connected to the threaded hole through an external thread. A handle (23) is fixedly installed on the end face of the end sleeve (9).

3. A compact flue gas dedusting and desulfurizing device according to claim 2, characterized in that: The filter cartridge (10) is fitted with a first sealing ring (12) on the inner wall of the end of the drain pipe (6). The inner wall of the first sealing ring (12) is in contact with the outer wall of the drain pipe (6). The end sleeve (9) is fitted with a second sealing ring (13) on the outer wall of the cylinder (8). The second sealing ring (13) is in contact with the end face of the cylinder (8).

4. A compact flue gas dedusting and desulfurizing device according to claim 1, characterized in that: The inlet end of the spray pipe (4) is connected to the return pipe (19) and the replenishment pipe (21) via a tee. A third valve (20) is installed on the return pipe (19). The inlet end of the return pipe (19) is connected to the outlet end of the circulation pump (18). A fourth valve (22) is installed on the replenishment pipe (21).

5. A compact flue gas dedusting and desulfurizing device according to claim 1, characterized in that: The bottom of the outer wall of the liquid storage tank (15) is fixedly connected to a drain pipe (16), and a second valve (17) is installed on the drain pipe (16).

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