Tail gas collecting and treating device for potassium sulfate device

Abstract

A tail gas collection treatment device for a potassium sulfate device relates to the technical field of tail gas treatment and comprises a tail gas filter cartridge shell, a filter screen cartridge is coaxially and rotatably arranged in the tail gas filter cartridge shell, and a clean tail gas area is formed between the outer wall of the filter screen cartridge and the inner wall of the tail gas filter cartridge shell. A plurality of scraping rods in frictional contact with the inner wall of the filter screen cylinder are arranged around the tail gas filter cylinder shell in the filter screen cylinder, a back flushing pipe is vertically fixed in the clean tail gas area, and a plurality of jet heads facing the outer wall of the filter screen cylinder are fixedly connected to the side wall of the back flushing pipe in parallel from top to bottom. The tail gas dust filtering device solves the problems that in the prior art, when a tail gas dust filtering device is used, particulate matter is prone to being attached to a filter screen, so that the filter screen needs to be detached regularly to lead out the filtered particulate matter inside, and operation is tedious, troublesome and strenuous.

Description

Technical Field

[0001] This utility model relates to the field of tail gas treatment technology, specifically to a tail gas collection and treatment device for potassium sulfate plants. Background Technology

[0002] Potassium sulfate is an inorganic salt composed of sulfate ions and potassium ions. Under normal conditions, it is a colorless or white hexagonal or orthorhombic crystal or granular powder. In the potassium sulfate production process, it needs to be filtered through a tail gas recovery device for secondary utilization. The production process requires a tail gas recovery device for potassium sulfate production. This device is used by removing the cover plate, pulling the convex rod to remove the filter element from the inside of the housing, and then inserting a new filter element into the housing to complete the replacement. However, this results in too much dust and powder accumulating in the filter element, leading to repeated replacements, which is wasteful of the filter element and not durable enough.

[0003] A prior art patent with publication number CN217449336U discloses a solution including a housing, a cover plate threaded to one side of the housing, an air inlet pipe passing through one side of the cover plate, and an air outlet pipe passing through the other side of the housing. A filter element is slidably connected inside the housing, and a protruding rod is installed in the middle of one side of the filter element. By incorporating a dust removal assembly, as exhaust gas enters the housing through the air inlet pipe, it is filtered by the filter element. The exhaust gas can then be discharged through the air outlet pipe for collection. Dust particles inside the filter element can slide towards the discharge hole. When the operator presses the air inlet pipe, the protruding rod is pushed by a fixing bracket, causing the filter element to compress the spring telescopic frame, thus sliding the filter element so that the discharge hole aligns with a misaligned hole. Dust particles at the discharge hole then pass through the misaligned hole and fall into the dust collection cylinder, making the filter element more durable and avoiding the inconvenience of repeated replacements.

[0004] As existing devices are used, the shortcomings of this technology have gradually become apparent, mainly in the following aspects:

[0005] First, with the use of existing exhaust dust filtration devices, particulate matter easily adheres to the filter screen, requiring periodic disassembly of the filter screen to remove the filtered particulate matter, which is cumbersome, time-consuming, and labor-intensive.

[0006] Secondly, in the existing exhaust gas treatment devices, the filter screens are prone to trapping particles during use, which affects the passage of exhaust gas and thus reduces the efficiency of exhaust gas treatment.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a potassium sulfate plant tail gas collection and treatment device, which solves the problem that in traditional tail gas dust filtration devices, particulate matter easily adheres to the filter screen during use, requiring periodic disassembly of the filter screen to remove the filtered particulate matter, which is cumbersome, time-consuming, and labor-intensive.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A potassium sulfate plant tail gas collection and treatment device includes a tail gas filter housing. A filter screen cylinder is coaxially rotatably disposed within the tail gas filter housing, and a clean tail gas area is formed between the outer wall of the filter screen cylinder and the inner wall of the tail gas filter housing. Several scraper rods are arranged around the tail gas filter housing inside the filter screen cylinder, engaging in frictional contact with the inner wall of the filter screen cylinder.

[0011] A backflush pipe is vertically fixed in the clean exhaust gas area, and several jet nozzles facing the outer wall of the filter cylinder are fixedly connected in parallel from top to bottom on the side wall of the backflush pipe.

[0012] As an optimized solution, a collection funnel with a downwardly tapering shape is fixedly connected to the bottom of the exhaust gas filter housing, and the lower ends of several scrapers are fixedly connected to the upper end of the collection funnel.

[0013] As an optimized solution, the lower end of the collection funnel is fixedly connected to a discharge tube, which extends through the lower end of the exhaust gas filter housing to the outside and is threadedly connected to a plug.

[0014] As an optimized solution, the upper end of the exhaust gas filter housing is fixedly connected to an exhaust gas inlet cylinder that communicates with the inner cavity of the filter cylinder.

[0015] As an optimized solution, an exhaust gas discharge cylinder that communicates with the clean exhaust gas area is fixedly connected to the outer wall of the exhaust gas filter housing.

[0016] As an optimized solution, an air supply pipe connecting to the clean exhaust gas area is fixedly connected to the outer wall of the exhaust gas filter housing, and the inner end of the air supply pipe is connected to the backflush pipe.

[0017] As an optimized solution, rotating rings are rotatably installed between the inner top surface and the inner bottom surface of the exhaust gas filter cartridge shell, and the upper and lower ends of the filter screen are correspondingly connected to the two rotating rings.

[0018] As an optimized solution, annular insertion grooves are provided on the opposite end faces of the two rotating rings, and the two ends of the filter cylinder are inserted and fixed in the annular insertion grooves.

[0019] As an optimized solution, a drive motor is fixedly connected to the outer bottom surface of the exhaust gas filter housing, the output shaft of the drive motor extends into the interior of the exhaust gas filter housing and is fixedly connected to a gear, and a gear ring that meshes with the gear is fixedly connected to the outer wall of the rotating ring located below.

[0020] As an optimized solution, the inner top and inner bottom surfaces of the exhaust gas filter housing are respectively provided with annular grooves, and the rotation of the rotating ring is constrained within the annular grooves.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The tail gas produced after potassium sulfate production is introduced through the tail gas inlet pipe. The tail gas passes through the filter screen and enters the clean tail gas area. Then it is discharged through the tail gas outlet pipe, thus completing the purification treatment of the tail gas.

[0023] Exhaust gas flows from the inside to the outside of the filter cylinder, blocking large particles inside. As the filter cylinder is used, when too many particles adhere to the inner wall, the air intake stops, the drive motor rotates the rotating ring, and in turn, the filter cylinder rotates. When the filter cylinder rotates, it comes into contact with the fixed scraper, which scrapes off the particles inside the filter cylinder. The particles are then collected in the collection funnel and discharged into the outlet cylinder. The scraped-off particles are discharged by opening the plug, which is convenient and quick.

[0024] A backflush pipe is installed in the clean exhaust gas area, and a jet nozzle is used to blow air onto the filter cylinder from the outside to achieve a backwashing function. This can clean the particles trapped inside the filter and further improve the cleaning efficiency of the filter cylinder. It is also simple, convenient and quick to operate. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] In the diagram: 1-Exhaust gas filter housing; 2-Filter screen cylinder; 3-Rotating ring; 4-Scraper rod; 5-Collection funnel; 6-Outlet cylinder; 7-Plug; 8-Exhaust gas inlet cylinder; 9-Exhaust gas outlet cylinder; 10-Clean exhaust gas area; 11-Gear ring; 12-Gear; 13-Drive motor; 14-Backflush pipe; 15-Jet nozzle; 16-Air supply pipe. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] like Figure 1 As shown, the potassium sulfate plant tail gas collection and treatment device includes a tail gas filter housing 1, a filter screen cylinder 2 coaxially rotatably arranged inside the tail gas filter housing 1, and a clean tail gas area 10 is formed between the outer wall of the filter screen cylinder 2 and the inner wall of the tail gas filter housing 1. The tail gas filter housing 1 is surrounded by a number of scraper rods 4 inside the filter screen cylinder 2, which rub against the inner wall of the filter screen cylinder 2.

[0030] A backflush pipe 14 is vertically fixed in the clean exhaust gas area 10. Several jet nozzles 15 facing the outer wall of the filter cylinder 2 are fixedly connected in parallel from top to bottom on the side wall of the backflush pipe 14.

[0031] A collection funnel 5, which is arranged in a downward tapering manner, is fixedly connected to the bottom of the exhaust gas filter housing 1. The lower ends of several scrapers 4 are fixedly connected to the upper ends of the collection funnel 5.

[0032] The lower end of the collecting funnel 5 is fixedly connected to the outlet tube 6, which extends through the lower end of the exhaust gas filter housing 1 to the outside and is threadedly connected to the plug 7.

[0033] The upper end of the exhaust gas filter housing 1 is fixedly connected to the exhaust gas inlet cylinder 8, which communicates with the inner cavity of the filter cylinder 2.

[0034] An exhaust gas discharge cylinder 9, which connects to the clean exhaust gas area 10, is fixedly attached to the outer wall of the exhaust gas filter housing 1.

[0035] An air supply pipe 16 is fixedly connected to the outer wall of the exhaust gas filter housing 1, which is connected to the clean exhaust gas area 10. The inner end of the air supply pipe 16 is connected to the backflush pipe 14.

[0036] Rotating rings 3 are rotatably installed between the inner top surface and the inner bottom surface of the exhaust gas filter cartridge shell 1, and the upper and lower ends of the filter screen cylinder 2 are connected to the two rotating rings 3 respectively.

[0037] Annular insertion grooves are provided on the opposite end faces of the two rotating rings 3, and the two ends of the filter cylinder 2 are inserted and fixed in the annular insertion grooves.

[0038] A drive motor 13 is fixedly attached to the outer bottom surface of the exhaust gas filter housing 1. The output shaft of the drive motor 13 extends into the interior of the exhaust gas filter housing 1 and is fixedly attached to a gear 12. A gear ring 11 that meshes with the gear 12 is fixedly attached to the outer wall of the rotating ring 3 located below.

[0039] The inner top and inner bottom surfaces of the exhaust gas filter housing 1 are respectively provided with annular grooves, and the rotating ring 3 is constrained to rotate within the annular grooves.

[0040] The working principle of this device is as follows:

[0041] The tail gas produced after potassium sulfate production is introduced through the tail gas inlet pipe. The tail gas passes through the filter screen cylinder 2 and enters the clean tail gas area 10. Then it is discharged through the tail gas outlet cylinder 9, thus completing the purification treatment of the tail gas.

[0042] The exhaust gas flows from the inside of the filter cylinder 2 to the outside, blocking large particles inside the filter cylinder 2. As the filter cylinder 2 is used, when too many particles adhere to the inner wall, the air intake stops, and the drive motor 13 drives the rotating ring 3 to rotate, which in turn drives the filter cylinder 2 to rotate. When the filter cylinder 2 rotates, it comes into frictional contact with the fixed scraper 4, which scrapes off the particles inside the filter cylinder 2. The particles are then fed into the discharge cylinder 6 through the collection funnel 5. The scraped particles are discharged by opening the plug 7, which is convenient and quick.

[0043] A backflush pipe 14 is installed in the clean exhaust gas area 10. The jet nozzle 15 is used to blow air onto the filter cylinder 2 from the outside to achieve the backwashing function. This can clean the particles trapped inside the filter screen and further improve the cleaning efficiency of the filter cylinder 2. It is also simple, convenient and quick to operate.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A device for collecting and processing exhaust gases from a potassium sulfate plant, characterized in that it comprises: The exhaust filter cartridge shell (1) is provided with a filter screen cartridge (2) rotating coaxially inside, and a clean exhaust area (10) is formed between the outer wall of the filter screen cartridge (2) and the inner wall of the exhaust filter cartridge shell (1), the exhaust filter cartridge shell (1) is provided with a plurality of scraper rods (4) rubbing against the inner wall of the filter screen cartridge (2) inside the filter screen cartridge (2), A back flushing pipe (14) is vertically fixed in the clean exhaust area (10), and a plurality of jet heads (15) are fixed on the side wall of the back flushing pipe (14) from top to bottom and face the outer wall of the filter screen cartridge (2).

2. The device for collecting and processing exhaust gas of a potassium sulfate plant according to claim 1, characterized in that: A collecting funnel (5) gradually tapering downward is fixed to the position close to the inner bottom of the exhaust filter cartridge shell (1), and the lower end of the plurality of scraper rods (4) is fixed to the upper end of the collecting funnel (5).

3. The device for collecting and processing exhaust gases of the potassium sulfate installation according to claim 2, characterized by the fact that: The lower end of the collecting funnel (5) is fixed with a lead-out cartridge (6) extending to the outside through the lower end of the exhaust filter cartridge shell (1) and threadedly connected with a plug cover (7).

4. The device for collecting and processing exhaust gases of the potassium sulfate installation according to claim 3, characterized by the fact that: The upper end of the exhaust filter cartridge shell (1) is fixed with an exhaust inlet cartridge (8) communicating with the inner cavity of the filter screen cartridge (2).

5. The device for collecting and processing exhaust gases of the potassium sulfate installation according to claim 4, characterized by the fact that: The outer side wall of the exhaust filter cartridge shell (1) is fixed with an exhaust outlet cartridge (9) communicating with the clean exhaust area (10).

6. The device for collecting and processing exhaust gases of the potassium sulfate installation according to claim 5, characterized by the fact that: The outer wall of the exhaust filter cartridge shell (1) is fixed with a gas supply pipe (16) communicating with the clean exhaust area (10), and the inner end of the gas supply pipe (16) communicates with the back flushing pipe (14).

7. The device for collecting and processing exhaust gases of the potassium sulfate plant according to claim 6, characterized by the fact that: The inner top surface and the inner bottom surface of the exhaust filter cartridge shell (1) are respectively provided with rotating rings (3), and the upper and lower ports of the filter screen cartridge (2) are correspondingly connected to the two rotating rings (3).

8. The device for collecting and processing exhaust gases of the potassium sulfate plant according to claim 7, characterized by the fact that: The opposite end surfaces of the two rotating rings (3) are provided with annular insertion grooves, and the two ends of the filter screen cartridge (2) are inserted and fixed in the annular insertion grooves.

9. The device for collecting and processing exhaust gases of the potassium sulfate plant according to claim 8, characterized by the fact that: The outer bottom surface of the exhaust filter cartridge shell (1) is fixed with a driving machine (13), the output shaft of the driving machine (13) extends to the inside of the exhaust filter cartridge shell (1) and is fixed with a gear (12), and the outer wall of the lower rotating ring (3) is fixed with a gear ring (11) meshing with the gear (12).

10. The device for collecting and processing exhaust gases of the potassium sulfate plant according to claim 9, characterized by the fact that: The inner top surface and the inner bottom surface of the exhaust filter cartridge shell (1) are respectively provided with annular grooves, and the rotating ring (3) is rotationally constrained in the annular grooves.

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