Desulfurization equipment for liquefied gas production equipment

Abstract

The utility model discloses desulfurization equipment for liquefied gas production equipment, which comprises a base, a desulfurization tower is welded on the base, a spraying assembly is arranged in the desulfurization tower, the spraying assembly comprises L-shaped long strips symmetrically welded on the inner surface of the desulfurization tower, fixing pieces are welded at the bottom ends of the L-shaped long strips, and the L-shaped long strips are fixedly connected with the base. A fixing piece is fixedly connected to the bottom end of the L-shaped long strip, a rotating rod is rotationally connected to the fixing piece, a rotating gear is fixedly connected to one end of the rotating rod, a sliding groove is formed in the end, close to the rotating gear, of the bottom end of the L-shaped long strip, strip teeth are slidably connected into the sliding groove, and the other end of the rotating rod is fixedly connected with an adjusting plate through a connecting piece; sprayers are arranged on the outer wall of an adjusting plate at equal intervals, sliding of strip teeth enables a rotating rod to rotate back and forth on a fixing piece, rotation of the rotating rod enables the adjusting plate to swing back and forth in the desulfurizing tower, the swing of the adjusting plate expands the spraying area of the sprayers, an alcohol amine solution makes full contact with liquefied gas, and the desulfurizing effect is further improved.

Description

Technical Field

[0001] The utility model relates to liquefied gas production, in particular to a desulfurization device used for liquefied gas production equipment. Background Art

[0002] With the development of petrochemical industry, liquefied petroleum gas (LPG) as a basic chemical raw material and new fuel has been paid more and more attention. In chemical production, liquefied petroleum gas is a by-product obtained by refineries when catalytic cracking and thermal cracking of crude oil. Using liquefied petroleum gas as fuel has been widely used in people's lives due to its high calorific value, no smoke and dust, no carbon residue, and easy operation.

[0003] At present, the commonly used desulfurization equipment in liquefied gas production is the desulfurization tower. The working principle of the desulfurization tower is to contact the sulfide-containing liquefied gas with an alcohol amine solution, so that the sulfide is absorbed and converted into a compound insoluble in the solution, thereby achieving the removal of sulfides in the gas. The existing desulfurization tower usually combines the alcohol amine solution with the sulfide-containing liquefied gas by spraying. However, the nozzle is often fixed in the desulfurization tower, resulting in a fixed spraying area of ​​the nozzle, so that the alcohol amine solution and the liquefied gas cannot fully contact, which greatly affects the desulfurization effect.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a desulfurization device for liquefied gas production equipment to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A desulfurization device for liquefied gas production equipment, comprising a base, a desulfurization tower welded on the base, an air intake pipe welded on one end of the outer surface of the desulfurization tower, a spray assembly arranged inside the desulfurization tower, the spray assembly comprising an L-shaped strip symmetrically welded on the inner surface of the desulfurization tower, a fixing piece welded on the bottom end of each L-shaped strip, a rotating rod rotatably connected to the fixing piece, a rotating gear fixedly connected to one end of the rotating rod, a slide groove is provided on one end of the bottom end of the L-shaped strip close to the rotating gear, a bar tooth is slidably connected in the slide groove, and the bar tooth is slidably connected to the rotating gear The wheels are meshed with each other, a groove is provided on the L-shaped strip, an electric telescopic rod is fixedly connected to one end of the inner surface of the groove, a moving block is welded on the output end of the electric telescopic rod, the bottom end of the moving block extends into the slide groove and is fixedly connected to the bar teeth, the other end of the rotating rod is fixedly connected to the connecting piece, an adjusting plate is welded on the bottom end of the connecting piece, nozzles are equidistantly provided on the outer wall of the adjusting plate, an air outlet pipe is welded on the top of the desulfurization tower, an amine tank is welded on the end of the base away from the desulfurization tower, and a recovery component is provided between the amine tank and the desulfurization tower.

[0008] Furthermore, in order to recycle the waste liquid, the recovery component includes a recovery tank welded to the base, the recovery tank is fixedly connected to the desulfurization tower through a liquid outlet pipe, the liquid outlet pipe is fixedly provided with a first valve, the top of the recovery tank is fixedly connected with a second water pump, the input end of the second water pump is connected to the recovery tank through a liquid extraction pipe, the output end of the second water pump is connected to the alcoholamine tank through a connecting pipe, the connecting pipe is fixedly provided with a second valve, an exhaust gas pipe is welded to the end of the top of the recovery tank away from the liquid extraction pipe, a heating interlayer is sleeved on the outer wall of the recovery tank, an electric heating pipe is arranged inside the heating interlayer, the electric heating pipe is electrically connected to a thermostat, and the thermostat is fixedly installed outside the heating interlayer.

[0009] Furthermore, in order to spray the alcoholamine solution into the desulfurization tank, a first water pump is fixedly connected to the top of the alcoholamine tank, the input end of the first water pump is connected to the alcoholamine tank through a liquid inlet pipe, and a connecting pipe is fixedly provided on the output end of the first water pump, one end of the connecting pipe extends into the desulfurization tower and is fixedly connected to a telescopic hose, and one end of the telescopic hose away from the connecting pipe is fixedly connected to the adjusting plate.

[0010] Furthermore, in order to make the bar teeth slide stably in the slide groove, sliding grooves are opened on both ends of the inner surface of the slide groove, and sliding blocks are welded at the centers of both ends of the outer surface of the bar teeth, and the sliding blocks are slidably connected to the sliding grooves.

[0011] Furthermore, in order to remove gaseous alcohol amines, an alcohol amine liquid adsorption layer is fixedly connected to the inner surface of the desulfurization tower away from the top of the L-shaped strip.

[0012] Furthermore, in order to adsorb thiophene in organic sulfur, an activated carbon adsorption layer is fixedly connected to the inner surface of the desulfurization tower away from the bottom end of the L-shaped strip.

[0013] Furthermore, in order to make the gas flow rate evenly distributed, a rectifier plate is fixedly connected to the bottom end of the inner surface of the desulfurization tower away from the activated carbon adsorption layer.

[0014] The beneficial effects of the utility model are:

[0015] 1. The electric telescopic rod extends and retracts itself, causing the moving block to slide back and forth in the groove, and the bar teeth to slide back and forth in the slide groove. The bar teeth mesh with the rotating gear, and the sliding of the bar teeth causes the rotating rod to rotate back and forth on the fixed part. The rotation of the rotating rod causes the adjusting plate to swing back and forth in the desulfurization tower. The swing of the adjusting plate expands the spraying area of ​​the nozzle, allowing the amine solution to fully contact with the liquefied gas, further improving the desulfurization effect.

[0016] 2. After the contact between the alcohol amine solution and the liquefied gas is completed, the waste liquid generated flows into the recovery tank through the liquid outlet pipe. At this time, the temperature is set by the thermostat and the electric heating tube is operated. The electric heating tube increases the temperature in the recovery tank and decomposes the waste liquid in the recovery tank. The waste liquid decomposes to obtain amine sulfide and decomposes the originally absorbed hydrogen sulfide to regenerate the alcohol amine solution. The alcohol amine solution in the recovery tank flows into the alcohol amine tank through the second water pump, so that the alcohol amine solution is recycled, which reduces the waste of the alcohol amine solution and saves the desulfurization cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a desulfurization device for liquefied gas production equipment according to an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of a desulfurization device for a liquefied gas production device according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4It is a cross-sectional view of a desulfurization tower in a desulfurization device for a liquefied gas production device according to an embodiment of the utility model;

[0022] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0023] In the figure:

[0024] 1. Base; 2. Desulfurization tower; 3. Air inlet pipe; 4. Rectifier plate; 5. Activated carbon adsorption layer; 6. L-shaped strip; 7. Fixing piece; 8. Rotating rod; 9. Rotating gear; 10. Slide groove; 11. Sliding groove; 12. Tooth; 13. Sliding block; 14. Groove; 15. Electric telescopic rod; 16. Moving block; 17. Connecting piece; 18. Adjusting plate; 19. Nozzle; 20. Alcoholamine liquid adsorption layer; 21. Alcoholamine tank; 22. Liquid inlet pipe; 23. First water pump; 24. Connecting pipe; 25. Telescopic hose; 26. Recovery tank; 27. Heating interlayer; 28. Electric heating pipe; 29. ​​Thermostat; 30. Liquid outlet pipe; 31. First valve; 32. Liquid extraction pipe; 33. Exhaust pipe; 34. Second water pump; 35. Connecting pipe; 36. Second valve; 37. Air outlet pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] According to an embodiment of the utility model, a desulfurization device for a liquefied gas production device is provided.

[0027] Embodiment 1;

[0028] like Figure 1 , Figure 4 and Figure 5As shown, according to the embodiment of the utility model, the desulfurization equipment for liquefied gas production equipment includes a base 1 for supporting the equipment, and the bottom end of the base 1 is welded with supporting legs around to stabilize the base 1 on the ground. A controller is fixedly provided on one side of the outer surface of the base 1, and the controller is electrically connected to the power supply. A desulfurization tower 2 is welded on the base 1, and an air intake pipe 3 is welded on one end of the outer surface of the desulfurization tower 2. The air intake pipe 3 is fixedly connected to the liquefied gas. A spraying assembly is provided inside the desulfurization tower 2, and the spraying assembly includes an L-shaped strip 6 symmetrically welded on the inner surface of the desulfurization tower 2, and a fixing member 7 is welded on the bottom end of the L-shaped strip 6. A rotating rod 8 is rotatably connected to the fixing member 7, and one end of the rotating rod 8 is fixed A rotating gear 9 is connected, a slide groove 10 is provided on one end of the bottom end of the L-shaped strip 6 close to the rotating gear 9, and a bar tooth 12 is slidably connected in the slide groove 10. In order to make the bar tooth 12 slide firmly in the slide groove 10, sliding grooves 11 are provided on both ends of the inner surface of the slide groove 10, and sliding blocks 13 are welded at the centers of both ends of the outer surface of the bar tooth 12. The sliding block 13 is slidably connected with the sliding groove 11, and the bar tooth 12 is meshed with the rotating gear 9. A groove 14 is provided on the L-shaped strip 6, and an electric telescopic rod 15 is fixedly connected to one end of the inner surface of the groove 14. The electric telescopic rod 15 is electrically connected to the controller and provides the required power to the power supply. A moving block is welded on the output end of the electric telescopic rod 15 16, the bottom end of the moving block 16 extends into the chute 10 and is fixedly connected to the bar teeth 12, a moving groove for the moving block 16 to slide is provided between the groove 14 and the chute 10, the other end of the rotating rod 8 is fixedly connected to the connecting piece 17, an adjusting plate 18 is welded on the bottom end of the connecting piece 17, a cavity for the flow of the alcoholamine solution is provided inside the adjusting plate 18, a nozzle 19 is provided at an equal distance on the bottom end and the side wall of the adjusting plate 18 to avoid the occurrence of dead angles, in order to remove gaseous alcoholamine, an alcoholamine liquid adsorption layer 20 is fixedly connected to the top of the L-shaped strip 6 on the inner surface of the desulfurization tower 2, and in order to adsorb thiophene in organic sulfur, a An activated carbon adsorption layer 5 is connected. In order to make the gas flow rate evenly distributed, a rectifier plate 4 is fixedly connected to the bottom end of the inner surface of the desulfurization tower 2 away from the activated carbon adsorption layer 5. An outlet pipe 37 is welded on the top of the desulfurization tower 2. The electric telescopic rod 15 itself retracts and retracts, so that the moving block 16 slides back and forth in the groove 14, and the bar teeth 12 slide back and forth in the slide groove 10. The bar teeth 12 are engaged with the rotating gear 9. The sliding of the bar teeth 12 causes the rotating rod 8 to rotate back and forth on the fixed part 7. The rotation of the rotating rod 8 causes the adjusting plate 18 to swing back and forth in the desulfurization tower 2. The swing of the adjusting plate 18 expands the spraying area of ​​the nozzle 19, so that the amine solution is fully in contact with the liquefied gas, and the desulfurization effect is further improved.

[0029] Embodiment 2:

[0030] See also Figure 1-Figure 3An amine tank 21 is welded on one end of the base 1 away from the desulfurization tower 2, and a first water pump 23 is fixedly connected to the top of the amine tank 21. The first water pump 23 is electrically connected to the controller and is provided with electric energy by a power supply. A liquid injection pipe is provided on the end of the top of the amine tank 21 away from the first water pump 23. The input end of the first water pump 23 is connected to the amine tank 21 through a liquid inlet pipe 22. A connecting pipe 24 is fixedly provided on the output end of the first water pump 23. One end of the connecting pipe 24 extends into the desulfurization tower 2 and is fixedly connected to a telescopic hose 25. The telescopic hose 25 has a certain degree of extensibility. One end of the shrink hose 25 away from the connecting pipe 24 is fixedly connected to the regulating plate 18. A recovery component is provided between the amine tank 21 and the desulfurization tower 2. The recovery component includes a recovery tank 26 welded on the base 1. The desulfurization tower 2 and the recovery tank 26 are arranged in high and low positions. A second water pump 34 is fixedly connected to the top of the recovery tank 26. The second water pump 34 is electrically connected to the controller and is provided with electric energy by a power supply. The input end of the second water pump 34 is connected to the recovery tank 26 through a liquid extraction pipe 32. The liquid extraction pipe 32 extends into the recovery tank 26. The output end of the second water pump 34 is connected to the recovery tank 26 through a connecting pipe 35. The alcohol amine tank 21 is connected, a second valve 36 is fixedly provided on the connecting pipe 35, an exhaust pipe 33 is welded on the top of the recovery tank 26 away from the end of the liquid extraction pipe 32, a heating interlayer 27 is sleeved on the outer wall of the recovery tank 26, an electric heating pipe 28 is arranged inside the heating interlayer 27, the electric heating pipe 28 is electrically connected to the thermostat 29, the thermostat 29 is fixedly installed outside the heating interlayer 27, the recovery tank 26 is fixedly connected to the desulfurization tower 2 through the liquid outlet pipe 30, a first valve 31 is fixedly provided on the liquid outlet pipe 30, the liquid outlet pipe 30 passes through the heating interlayer 27, and is fixedly connected to the recovery tank 26 Then, after the contact between the alcohol amine solution and the liquefied gas is completed, the generated waste liquid flows into the recovery tank 26 through the liquid outlet pipe 30. At this time, the temperature controller 29 sets the temperature and makes the electric heating tube 28 work. The electric heating tube 28 increases the temperature in the recovery tank 26, so that the waste liquid in the recovery tank 26 is decomposed. The waste liquid is decomposed to obtain amine sulfide, and the originally absorbed hydrogen sulfide is decomposed and escaped, so that the alcohol amine solution can be regenerated. The alcohol amine solution in the recovery tank 26 is flowed to the alcohol amine tank 21 through the second water pump 34, so that the alcohol amine solution is recycled, thereby reducing the waste of the alcohol amine solution and saving the desulfurization cost.

[0031] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0032] In practical application, first, the first valve 31 and the second valve 36 are closed, and the liquefied gas enters the desulfurization tower 2 through the air inlet pipe 3. The liquefied gas first passes through the rectifier plate 4, which makes the gas flow rate evenly distributed, and then passes through the activated carbon adsorption layer 5, which adsorbs thiophene in the organic sulfur. At this time, the first water pump 23 works, and the first water pump 23 flows the amine solution in the amine tank 21 to the desulfurization tower 2, and makes the electric telescopic rod 15 work. The electric telescopic rod 15 itself is extended and retracted, so that the moving block 16 slides back and forth in the groove 14, and the bar teeth 12 slides back and forth in the slide groove 10. The bar teeth 12 are meshed with the rotating gear 9, and the sliding of the bar teeth 12 makes the rotating rod 8 rotate back and forth on the fixing part 7. The rotation of the rotating rod 8 makes the adjusting plate 18 swing back and forth in the desulfurization tower 2. The swing of the adjusting plate 18 expands the spraying area of ​​the nozzle 19, so that the amine solution and the liquefied gas are fully in contact, and the desulfurization effect is further improved. The desulfurized liquefied gas flows to the alcoholamine liquid adsorption layer 20, and the gaseous alcoholamine in the desulfurized liquefied gas is absorbed. The absorbed liquefied gas is discharged through the outlet pipe 37. After the desulfurization is completed, the first valve 31 is opened, and the waste liquid at the bottom of the desulfurization tower 2 flows into the recovery tank 26 through the outlet pipe 30. After the waste liquid flows out, the first valve 31 is closed. At this time, the thermostat 29 sets the temperature and makes the electric heating tube 28 work. The electric heating tube 28 increases the temperature in the recovery tank 26, so that the waste liquid in the recovery tank 26 is decomposed. The waste liquid is decomposed to obtain amine sulfide, and the originally absorbed hydrogen sulfide is decomposed and escaped, so that the alcoholamine solution can be regenerated. The originally absorbed hydrogen sulfide is collected through the waste gas pipe 33. After the decomposition is completed, the second valve 36 is opened, and the second water pump 34 is operated. The second water pump 34 flows the alcoholamine solution in the recovery tank 26 to the alcoholamine tank 21, so that the alcoholamine solution is recycled, thereby reducing the waste of the alcoholamine solution and saving the desulfurization cost.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization device for a liquefied gas production device, comprising a base (1), characterized in that: A desulfurization tower (2) is welded on the base (1), an air intake pipe (3) is welded on one end of the outer surface of the desulfurization tower (2), a spray assembly is arranged inside the desulfurization tower (2), and the spray assembly comprises an L-shaped strip (6) symmetrically welded on the inner surface of the desulfurization tower (2), a fixing member (7) is welded on the bottom end of each L-shaped strip (6), a rotating rod (8) is rotatably connected to the fixing member (7), a rotating gear (9) is fixedly connected to one end of the rotating rod (8), a sliding groove (10) is provided on the bottom end of the L-shaped strip (6) close to the rotating gear (9), a tooth (12) is slidably connected in the sliding groove (10), the tooth (12) is meshed with the rotating gear (9), and a groove is provided on the L-shaped strip (6). (14), an electric telescopic rod (15) is fixedly connected to one end of the inner surface of the groove (14), a moving block (16) is welded to the output end of the electric telescopic rod (15), the bottom end of the moving block (16) extends into the slide groove (10) and is fixedly connected to the tooth (12), the other end of the rotating rod (8) is fixedly connected to the connecting piece (17), an adjusting plate (18) is welded to the bottom end of the connecting piece (17), and nozzles (19) are equidistantly arranged on the outer wall of the adjusting plate (18), an air outlet pipe (37) is welded to the top of the desulfurization tower (2), an amine tank (21) is welded to the end of the base (1) away from the desulfurization tower (2), and a recovery component is arranged between the amine tank (21) and the desulfurization tower (2).

2. The desulfurization equipment for liquefied gas production equipment according to claim 1, characterized in that: The recovery assembly comprises a recovery tank (26) welded to the base (1); the recovery tank (26) is fixedly connected to the desulfurization tower (2) via a liquid outlet pipe (30); a first valve (31) is fixedly provided on the liquid outlet pipe (30); a second water pump (34) is fixedly connected to the top of the recovery tank (26); an input end of the second water pump (34) is connected to the recovery tank (26) via a liquid extraction pipe (32); and an output end of the second water pump (34) is connected to the recovery tank (26) via a connecting pipe (35). The connecting pipe (35) is connected to the alcohol amine tank (21), a second valve (36) is fixedly provided on the connecting pipe (35), an exhaust pipe (33) is welded to the top end of the recovery tank (26) away from the liquid extraction pipe (32), a heating interlayer (27) is sleeved on the outer wall of the recovery tank (26), an electric heating pipe (28) is provided inside the heating interlayer (27), the electric heating pipe (28) is electrically connected to a temperature controller (29), and the temperature controller (29) is fixedly installed outside the heating interlayer (27).

3. The desulfurization equipment for liquefied gas production equipment according to claim 2, characterized in that: A first water pump (23) is fixedly connected to the top of the alcohol amine tank (21); the input end of the first water pump (23) is connected to the alcohol amine tank (21) via a liquid inlet pipe (22); a connecting pipe (24) is fixedly provided on the output end of the first water pump (23); one end of the connecting pipe (24) extends into the desulfurization tower (2) and is fixedly connected to a telescopic hose (25); and one end of the telescopic hose (25) away from the connecting pipe (24) is fixedly connected to the adjustment plate (18).

4. The desulfurization equipment for liquefied gas production equipment according to claim 1, characterized in that: Sliding grooves (11) are provided at both ends of the inner surface of the sliding groove (10), and sliding blocks (13) are welded at the centers of both ends of the outer surface of the tooth (12), and the sliding blocks (13) are slidably connected to the sliding grooves (11).

5. The desulfurization equipment for liquefied gas production equipment according to claim 1, characterized in that: An alcohol amine liquid adsorption layer (20) is fixedly connected to the top of the inner surface of the desulfurization tower (2) away from the L-shaped strip (6).

6. The desulfurization equipment for liquefied gas production equipment according to claim 5, characterized in that: An activated carbon adsorption layer (5) is fixedly connected to the inner surface of the desulfurization tower (2) away from the bottom end of the L-shaped strip (6).

7. The desulfurization equipment for liquefied gas production equipment according to claim 6, characterized in that: A rectifying plate (4) is fixedly connected to the bottom end of the inner surface of the desulfurization tower (2) away from the activated carbon adsorption layer (5).

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