Deep purification device for coke oven gas

Abstract

The utility model relates to the technical field of coke oven gas, and discloses a coke oven gas deep purification device which comprises a tower body, a gas inlet pipe and a liquid inlet pipe are respectively mounted outside the tower body, an exhaust pipe is mounted at the top of the tower body, and a cleaning mechanism is mounted in the tower body and close to the bottom end. The desulfurization mechanism is mounted close to the top end in the tower body, the cleaning mechanism comprises a water tank and a rotating rod, the water tank is mounted at the bottom of the tower body, a nano-amphiphobic film is mounted between the water tank and the tower body, a motor is mounted at the bottom of the water tank, and the rotating rod is fixedly connected to the top end of an output shaft of the motor. And two groups of stirring rods are fixedly mounted outside the rotating rod. Tar and impurities adhered to the inner wall of the tower body can be scraped off through a scraper and a diversion trench, and guide flow is carried out for automatic cleaning; gas forms rotational flow through the conical cylinder and the top cover, so that the mixed reaction desulfurization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven gas, in particular to a coke oven gas deep purification device. Background Art

[0002] Coke oven gas is produced by mixing several types of bituminous coal into coking coal during the coking process. After high-temperature dry distillation, in addition to products such as coke and tar, it also produces combustible gases. Coke oven gas contains a certain amount of harmful substances. The excessive content of impurities such as tar, dust, naphthalene, and benzene can cause blockage of the coke oven gas compressor system equipment and pipelines, so it needs to be purified.

[0003] Publication No. CN221460306U provides a coke oven gas purification device, wherein an open shell is connected to a scraping mechanism for preventing the bottom of the purification mechanism from being blocked; the scraping mechanism includes a mounting frame.

[0004] The above-mentioned purification device separates organic matter from the first filter, so that the bottom end of the purification mechanism will not be blocked by organic matter in the coke oven gas. Since tar and impurities in the gas easily adhere to the inner wall of the tower body, it is inconvenient to scrape and clean them, and the gas and water mist are unevenly mixed, reducing the desulfurization efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a coke oven gas deep purification device to solve the technical problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A coke oven gas deep purification device comprises a tower body, an air inlet pipe and a liquid inlet pipe are respectively installed on the outside of the tower body, an exhaust pipe is installed on the top of the tower body, a cleaning mechanism is installed on the bottom end of the inside of the tower body, a desulfurization mechanism is installed on the top end of the inside of the tower body, the cleaning mechanism comprises a water tank and a rotating rod, the water tank is installed at the bottom of the tower body, a nano-amphiphobic membrane is installed between the water tank and the tower body, a motor is installed at the bottom of the water tank, the rotating rod is fixedly connected to the top end of the output shaft of the motor, two sets of stirring rods are fixedly installed on the outside of the rotating rod, and the two sets of stirring rods are installed on the outside A scraper is movably installed at each end, a support rod is installed on the inner side of the scraper and runs through the inside of each stirring rod, a spring is installed on the periphery of the support rod and inside the stirring rod, a plurality of guide grooves are opened on the inner wall of the tower body near the bottom end, a plurality of arc plates are fixedly welded on the surface of the guide groove, a first circulation pump is installed on the outside of the water tank, a first spray rack is installed inside the tower body and directly above the rotating rod, a first infusion pipe is connected between the first spray rack and the first circulation pump, and a first demister is installed inside the tower body and above the first spray rack.

[0008] Preferably, the rotating rod movably passes through the bottom of the tower body and the water tank, and the water inlet of the first circulation pump is connected to the water tank.

[0009] Preferably, the number of stirring rods in each group is three, and the support rods penetrate the interior of the stirring rods and are slidably arranged.

[0010] Preferably, the inner wall of the arc plate matches the inner wall of the tower body, and the outer side of the scraper is located on the inner wall of the tower body in a sliding arrangement.

[0011] Preferably, the desulfurization mechanism includes a cone, which is installed inside the tower body near the top, a swirl coupler is installed inside the cone near the bottom, a top cover is installed on the top of the swirl coupler and directly above the cone, a liquid storage tank is provided at the top edge of the cone, a second circulation pump is installed outside the liquid storage tank, a second spray rack is installed inside the tower body near the top, a second liquid infusion pipe is connected between the second spray rack and the water outlet of the second circulation pump, and a second demister is installed inside the tower body and directly above the second spray rack.

[0012] Preferably, the diameter of the top end of the cone is smaller than the diameter of the bottom end, and the liquid inlet pipe and the liquid storage tank are interconnected.

[0013] Preferably, the top cover is arranged in a conical shape, and the diameter of the bottom end of the top cover is larger than the diameter of the top of the cone.

[0014] Preferably, the top end of the cone is open, and the water inlet of the second circulation pump is communicated with the liquid storage tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1) The purification device is provided with a cleaning mechanism. The stirring rod drives the scraper to rotate. The guide groove and the arc plate can scrape off the tar and impurities adhering to the inner wall of the tower body, and guide the flow to automatically clean it. At the same time, the rotation of the stirring rod causes the gas to form a vortex and fully mix with the water mist for washing and filtration. The support rod automatically slides outward under the action of the spring, so that the scraper is always in contact with the inner wall of the tower body, thereby improving the cleaning of the inner wall of the tower body.

[0017] 2) The purification device is provided with a desulfurization mechanism. The liquid inlet pipe is used to transport lime water and catalyst, which are sprayed out in atomization through the second spray rack to react with the gas to achieve the desulfurization effect. The gas is formed into a vortex through the cone and the swirl coupler to improve the mixing reaction efficiency. The top cover prevents dripping water droplets from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall internal structure of a coke oven gas deep purification device in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the cleaning mechanism in an embodiment of the present utility model;

[0020] Figure 3 In the embodiment of the present utility model Figure 2 A magnified view of point A;

[0021] Figure 4 This is a schematic diagram of the internal structure of the desulfurization mechanism in an embodiment of the present utility model.

[0022] In the figure: 1. tower body; 2. air inlet pipe; 3. liquid inlet pipe; 4. exhaust pipe; 5. cleaning mechanism; 6. desulfurization mechanism; 7. water tank; 8. nano-amphiphobic membrane; 9. motor; 10. rotating rod; 11. stirring rod; 12. support rod; 13. scraper; 14. spring; 15. guide groove; 16. arc plate; 17. first circulation pump; 18. first spray rack; 19. first liquid delivery pipe; 20. first demister; 21. cone; 22. swirl coupler; 23. top cover; 24. liquid storage tank; 25. second circulation pump; 26. second spray rack; 27. second liquid delivery pipe; 28. second demister. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Combine Figures 1-4 A coke oven gas deep purification device includes a tower body 1, an air inlet pipe 2 and a liquid inlet pipe 3 are respectively installed on the outside of the tower body 1, an exhaust pipe 4 is installed on the top of the tower body 1, a cleaning mechanism 5 is installed near the bottom of the tower body 1, and a desulfurization mechanism 6 is installed near the top of the tower body 1.

[0026] See Figure 2 and Figure 3, further obtained, the cleaning mechanism 5 includes a water tank 7 and a rotating rod 10, the water tank 7 is installed at the bottom of the tower body 1, a nano-amphiphobic membrane 8 is installed between the water tank 7 and the tower body 1, a motor 9 is installed at the bottom of the water tank 7, the rotating rod 10 is fixedly connected to the top of the output shaft of the motor 9, two sets of stirring rods 11 are fixedly installed on the outside of the rotating rod 10, and the outer ends of the two sets of stirring rods 11 are movably installed with scrapers 13, and the inner side of the scraper 13 and the inside of each stirring rod 11 are installed with a support rod 12, and the outer periphery of the support rod 12 A spring 14 is installed inside the stirring rod 11, a plurality of guide grooves 15 are opened on the inner wall of the tower body 1 near the bottom, a plurality of arc plates 16 are fixedly welded on the surface of the guide groove 15, a first circulation pump 17 is installed outside the water tank 7, a first spray rack 18 is installed inside the tower body 1 and directly above the rotating rod 10, a first liquid infusion pipe 19 is connected between the first spray rack 18 and the first circulation pump 17, and a first demister 20 is installed inside the tower body 1 and above the first spray rack 18.

[0027] The rotating rod 10 is movable through the bottom of the tower body 1 and the water tank 7. The water inlet of the first circulation pump 17 is connected to the water tank 7. The water in the water tank 7 is transported to the first spray rack 18 through the first circulation pump 17, and the water is atomized and sprayed out through the first spray rack 18.

[0028] Each group of stirring rods 11 has three members, and the support rods 12 are slidably arranged inside the stirring rods 11 . The stirring rods 11 drive the scrapers 13 to rotate, and the sliding of the support rods 12 and the action of the springs 14 make the scrapers 13 fit against the inner wall of the tower body 1 .

[0029] The inner wall of the arc plate 16 matches the inner wall of the tower body 1, and the outer side of the scraper 13 is located on the inner wall of the tower body 1 and is slidably arranged. The scraper 13 scrapes off the tar and impurities adhering to the inner wall of the tower body 1, and the tar and impurities flow downward through the guide groove 15.

[0030] Specifically, the coal gas enters the tower body 1 through the air inlet pipe 2, and the water is transported to the first spray rack 18 by the first circulation pump 17 and sprayed out in atomization, so that the tar and impurities in the gas are adsorbed and filtered. The stirring rod 11 is driven to rotate by the motor 9, so that the scraper 13 scrapes off the tar and impurities adhered to the inner wall of the tower body 1. At the same time, the stirring rod 11 can drive the gas and water mist to rotate, so that the water mist can fully absorb the tar and impurities in the gas.

[0031] Example 2

[0032] See Figure 4, and on the basis of Example 1, it is further obtained that the desulfurization mechanism 6 includes a cone 21, which is installed near the top of the tower body 1, and a swirl coupler 22 is installed near the bottom of the cone 21. A top cover 23 is installed on the top of the swirl coupler 22 and directly above the cone 21. A liquid storage tank 24 is provided at the top edge of the cone 21, and a second circulation pump 25 is installed outside the liquid storage tank 24. A second spray rack 26 is installed near the top of the tower body 1, and a second liquid infusion pipe 27 is connected between the second spray rack 26 and the water outlet of the second circulation pump 25. A second demister 28 is installed inside the tower body 1 and directly above the second spray rack 26.

[0033] The diameter of the top end of the cone 21 is smaller than that of the bottom end. The liquid inlet pipe 3 and the liquid storage tank 24 are interconnected. The liquid inlet pipe 3 is used to transport lime water to desulfurize the gas.

[0034] The top cover 23 is conical in shape. The diameter of the bottom end of the top cover 23 is larger than the diameter of the top of the cone 21. The gas is discharged through the top of the cone 21, and the top cover 23 prevents liquid from dripping in.

[0035] The top of the cone 21 is open, and the water inlet of the second circulation pump 25 is communicated with the liquid storage tank 24 . The lime water in the liquid storage tank 24 is transported to the second spray rack 26 for atomization and spraying by the second circulation pump 25 .

[0036] Specifically, the washed and filtered gas forms a vortex through the swirl coupler 22 and is discharged through the top of the cone 21. The lime water is transported to the second spray rack 26 through the second circulation pump 25 and atomized and sprayed out to react with the gas for desulfurization. The top cover 23 prevents water droplets from entering.

[0037] In actual operation, the air inlet pipe 2 is used to transport the coal gas into the tower body 1 for purification, and the liquid inlet pipe 3 is used to transport lime water into the liquid storage tank 24. Through the washing technology, the water is atomized into particles of 0.01 microns, so that its surface is expanded thousands of times, the gas-liquid mass transfer and absorption efficiency is improved, and the dust, tar, etc. in the coke oven gas are washed and settled to remove naphthalene, dust and tar in the gas;

[0038] During washing and filtering, the first circulation pump 17 transports the water in the water tank 7 to the first spray rack 18 and sprays it out in atomized form, adsorbing and filtering the tar, impurities, etc. in the gas. The water mist carried in the gas is removed by the first demister 20, and the dripping water droplets are filtered by the nano-amphiphobic membrane 8 for recycling. At the same time, the motor 9 drives the rotating rod 10 and the stirring rod 11 to rotate, so that the scraper 13 slides along the inner wall of the tower body 1, scraping off the tar and impurities adhering to the inner wall of the tower body 1. The tar and impurities are captured by the guide groove 15 and flow downward. The support rod 12 makes the scraper 13 fit the inner wall of the tower body 1 under the action of the spring 14;

[0039] During desulfurization, the washed and filtered gas enters the cone 21, and is swirled and discharged through the swirl coupler 22. The liquid inlet pipe 3 transports lime water and the required catalyst to the liquid storage tank 24. The second circulation pump 25 transports the lime water and catalyst to the second spray rack 26 for atomization and spraying, and fully mixes with the gas to react for desulfurization. The dripping water droplets drip into the liquid storage tank 24 through the top cover 23, and the top cover 23 prevents water droplets from entering.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coke oven gas deep purification device, comprising a tower body (1), an air inlet pipe (2) and a liquid inlet pipe (3) respectively installed on the outside of the tower body (1), and an exhaust pipe (4) installed on the top of the tower body (1), characterized in that: A cleaning mechanism (5) is installed at the bottom of the tower body (1), and a desulfurization mechanism (6) is installed at the top of the tower body (1); The cleaning mechanism (5) comprises a water tank (7) and a rotating rod (10), wherein the water tank (7) is installed at the bottom of the tower body (1), a nano-amphiphobic membrane (8) is installed between the water tank (7) and the tower body (1), a motor (9) is installed at the bottom of the water tank (7), the rotating rod (10) is fixedly connected to the top of the output shaft of the motor (9), two groups of stirring rods (11) are fixedly installed on the outside of the rotating rod (10), and the outer ends of the two groups of stirring rods (11) are movably installed with scrapers (13), and support rods (12) are installed on the inner side of the scrapers (13) and through the inside of each stirring rod (11), and the support rods (12) are fixedly installed on the outside of the rotating rod (10). A spring (14) is installed on the periphery and inside the stirring rod (11); a plurality of guide grooves (15) are opened on the inner wall of the tower body (1) near the bottom end; a plurality of arc plates (16) are fixedly welded on the surface of the guide groove (15); a first circulation pump (17) is installed on the outside of the water tank (7); a first spray rack (18) is installed inside the tower body (1) and directly above the rotating rod (10); a first liquid infusion pipe (19) is connected and installed between the first spray rack (18) and the first circulation pump (17); a first demister (20) is installed inside the tower body (1) and above the first spray rack (18).

2. The coke oven gas deep purification device according to claim 1, characterized in that: The rotating rod (10) movably penetrates the bottom of the tower body (1) and the water tank (7), and the water inlet of the first circulating pump (17) and the water tank (7) are connected to each other.

3. The coke oven gas deep purification device according to claim 1, characterized in that: The number of the stirring rods (11) in each group is three, and the support rods (12) penetrate the interior of the stirring rods (11) in a sliding arrangement.

4. The coke oven gas deep purification device according to claim 1, characterized in that: The inner wall of the arc plate (16) matches the inner wall of the tower body (1), and the outer side of the scraper (13) is located on the inner wall of the tower body (1) in a sliding arrangement.

5. The coke oven gas deep purification device according to claim 1, characterized in that: The desulfurization mechanism (6) includes a cone (21), which is installed in a position near the top of the tower body (1), a swirl coupler (22) is installed in the bottom of the cone (21), a top cover (23) is installed on the top of the swirl coupler (22) and directly above the cone (21), a liquid storage tank (24) is provided at the top edge of the cone (21), a second circulation pump (25) is installed outside the liquid storage tank (24), a second spray rack (26) is installed in the top of the tower body (1), a second liquid delivery pipe (27) is connected between the second spray rack (26) and the water outlet of the second circulation pump (25), and a second demister (28) is installed in the tower body (1) and directly above the second spray rack (26).

6. The coke oven gas deep purification device according to claim 5, characterized in that: The diameter of the top end of the cone (21) is smaller than that of the bottom end, and the liquid inlet pipe (3) and the liquid storage tank (24) are interconnected.

7. The coke oven gas deep purification device according to claim 5, characterized in that: The top cover (23) is arranged in a conical shape, and the diameter of the bottom end of the top cover (23) is larger than the diameter of the top of the cone (21).

8. The coke oven gas deep purification device according to claim 5, characterized in that: The top end of the cone (21) is open, and the water inlet of the second circulation pump (25) is communicated with the liquid storage tank (24).

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