Supergravity wet oxidation desulfurization equipment

Abstract

The invention discloses supergravity wet oxidation desulfurization equipment, and belongs to the field of hydrogen sulfide gas removal. The equipment comprises a shell, a rotating cylinder is rotationally connected in the shell, a liquid supply pipe used for injecting an alkaline solution into the rotating cylinder is connected to the top of the shell, an air outlet pipe is slidably connected to the top of the shell, a plurality of vertically-formed first through holes are formed in the side wall of the air outlet pipe, and a sliding cylinder is slidably connected in the air outlet pipe; a plurality of vertically-formed second through holes are formed in the side wall of the sliding barrel, an inner cavity of the rotating barrel is in a bottom-to-top horn shape, the side wall of the air outlet pipe is connected with a cover ring, the cover ring is attached to a port of the rotating barrel when moving downwards, and the alkaline solution in the rotating barrel is discharged when the cover ring moves upwards; according to the device, the alkaline solution can fully participate in the desulfurization reaction through vertical movement of the cover ring, so that the supply speed of the alkaline solution is reduced, and the dosage of the alkaline solution is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen sulfide gas removal, in particular to an ultra-gravity wet oxidation desulfurization device. Background Art

[0002] In the current environmental protection and energy fields, desulfurization technology is of great significance for reducing sulfide emissions generated in the process of coal and gas combustion. Although traditional wet desulfurization technology can effectively remove sulfides in gas, it often has problems such as low desulfurization efficiency, high energy consumption and large consumption of alkaline solution. In order to solve these problems, ultra-gravity wet oxidation desulfurization technology came into being.

[0003] Ultra-gravity wet oxidation desulfurization equipment simulates ultra-gravity environment and uses centrifugal force to strengthen the mass transfer process between gas and liquid, thereby improving the desulfurization efficiency. In this equipment, alkaline solution (such as soda ash or ammonia water) is injected into the rotating drum. Due to the high-speed rotation of the drum, the alkaline solution is subjected to strong centrifugal force and is thrown toward the inner wall of the drum to form a thin liquid film. At the same time, the gas to be desulfurized (such as coal gas or natural gas) is introduced into the drum to fully contact and react with this liquid film, thereby achieving desulfurization.

[0004] However, the traditional ultra-gravity wet oxidation desulfurization equipment still has some shortcomings in terms of gas-liquid contact and reaction. For example, due to the uneven distribution of gas and the limited mobility of alkaline solution, part of the gas is often discharged without being fully desulfurized, reducing the desulfurization efficiency. In addition, the consumption of alkaline solution is also large, which increases the operating cost. Summary of the invention

[0005] The purpose of the present invention is to provide a supergravity wet oxidation desulfurization device, which solves the problem of large consumption of alkaline solution in the existing equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultra-gravity wet oxidation desulfurization device, comprising a shell, a rotating drum is rotatably connected in the shell, a liquid supply pipe for filling the rotating drum with alkaline solution is connected to the top of the shell, an air outlet pipe is slidably connected to the top of the shell, a plurality of vertically arranged first through holes are opened on the side wall of the air outlet pipe, a sliding cylinder is slidably connected in the air outlet pipe, a plurality of vertically arranged second through holes are opened on the side wall of the sliding cylinder, after the air outlet pipe moves upward relative to the sliding cylinder, the first through holes at the top and bottom are coaxial with the second through holes, the first through holes at the middle intersect and are not coaxial with the second through holes, and after the air outlet pipe moves downward relative to the sliding cylinder, the first through holes at the top and bottom do not intersect and the second through holes at the middle intersect and are not coaxial with each other;

[0007] The inner cavity of the drum is trumpet-shaped from bottom to top, and the side wall of the air outlet pipe is connected with a cover ring. When the cover ring moves downward, it fits against the port of the drum. When the cover ring moves upward, the alkaline solution in the drum is discharged.

[0008] Preferably, the bottom walls of the slide cylinder and the air outlet pipe are respectively provided with a coaxially arranged third through hole and a fourth through hole, a conical block is connected to the hole wall of the third through hole, the large diameter end of the conical block passes through the fourth through hole, and when the air outlet pipe moves upward relative to the slide cylinder, the gap between the conical block and the hole wall of the fourth through hole increases.

[0009] Preferably, there are multiple air outlet pipes, and the tops of the multiple air outlet pipes are commonly connected to a hollow ring, and the hollow ring is connected to an air supply pipe.

[0010] Preferably, there are multiple slide cylinders, and the multiple slide cylinders slide in the multiple air outlet pipes respectively. The multiple slide cylinders are all connected with rectangular rods, and the hollow ring is provided with holes that cooperate with the rectangular rods.

[0011] Preferably, a mounting ring is connected to the top of the shell, the plurality of rectangular rods are connected to the mounting ring, an electric telescopic rod is connected to the lower surface of the mounting ring, and an output end of the electric telescopic rod is connected to the hollow ring.

[0012] Preferably, a drain pipe and an exhaust pipe are connected to the bottom of the shell, and the drain pipe is connected to an external regeneration tank.

[0013] Preferably, a motor is connected to the bottom of the shell, a rotating shaft is connected to the output end of the motor, and the rotating shaft is connected to the rotating drum.

[0014] Preferably, a circulation pump is connected to the discharge pipe, a sliding speed regulator for controlling the circulation pump is connected to the top of the outer shell, the sliding contact of the sliding speed regulator is connected to the hollow ring, and when the hollow ring moves upward, the sliding speed regulator controls the circulation pump to increase its pumping speed.

[0015] Preferably, an oxidant supply pipe is provided at the upper portion of the shell, and the oxidant supply pipe is connected to an external regeneration tank.

[0016] Preferably, the oxidant supply tube is connected to a box body, the oxidant supply tube is communicated with the box body, a block is slidably connected in the box body, the block is connected to the hollow ring, and when the hollow ring moves upward, the oxidant supply tube is switched from a closed state to an open state or the opening degree is increased.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes the rotating drum to generate centrifugal force so that the alkaline solution adheres to the inner wall of the drum, and gases such as coal gas or natural gas enter the alkaline solution on the side wall of the drum through specific through holes for desulfurization. The gas outlet pipe can slide relative to the outer shell and the drum, and the cover ring thereon fits the drum port when moving downward to prevent the alkaline solution from being thrown out and allows the solution to accumulate at the drum port and the bottom. The solutions accumulated in these two places can effectively desulfurize the gas with a large amount of emissions. When the gas outlet pipe moves upward, the cover ring moves away from the drum, and the post-reaction solution in the drum is thrown out. At the same time, it is ensured that the gas is discharged through the middle of the gas outlet pipe to avoid the emission of undesulfurized gas, so that the alkaline solution can fully participate in the desulfurization reaction, thereby reducing the supply speed of the alkaline solution and saving the amount of alkaline solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the present invention after the air outlet pipe is moved upward;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention in which the air outlet pipe is moved downward;

[0023] Figure 5 It is a structural schematic diagram of the sliding speed regulator of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the box body of the present invention.

[0025] In the figure: 1. shell; 11. liquid supply pipe; 12. liquid discharge pipe; 13. circulation pump; 14. air supply pipe; 15. exhaust pipe; 2. motor; 21. rotating shaft; 22. rotating drum; 3. hollow ring; 31. air outlet pipe; 311. cover ring; 32. first through hole; 33. sliding cylinder; 331. second through hole; 34. third through hole; 35. conical block; 36. fourth through hole; 37. mounting ring; 38. rectangular rod; 39. electric telescopic rod; 4. sliding speed regulator; 5. oxidant supply pipe; 51. box body; 52. blocking block. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1-Figure 6The present embodiment provides a technical solution: an ultra-gravity wet oxidation desulfurization device, comprising a shell 1, a rotating drum 22 is rotatably connected in the shell 1, a liquid supply pipe 11 for filling the rotating drum 22 with an alkaline solution is connected to the top of the shell 1, an air outlet pipe 31 is slidably connected to the top of the shell 1, a plurality of vertically arranged first through holes 32 are provided on the side wall of the air outlet pipe 31, a slide cylinder 33 is slidably connected in the air outlet pipe 31, a plurality of vertically arranged second through holes 331 are provided on the side wall of the slide cylinder 33, after the air outlet pipe 31 moves upward relative to the slide cylinder 33, the The first through hole 32 is coaxial with the second through hole 331, the first through hole 32 in the middle intersects with the second through hole 331 and is not coaxial, and after the air outlet pipe 31 moves downward relative to the slide cylinder 33, the first through hole 32 and the second through hole 331 at the top and the bottom do not intersect, and the first through hole 32 in the middle intersects with the second through hole 331 and is not coaxial; the inner cavity of the rotating drum 22 is trumpet-shaped from bottom to top, and the side wall of the air outlet pipe 31 is connected to a cover ring 311, which fits against the port of the rotating drum 22 when the cover ring 311 moves downward, and the alkaline solution in the rotating drum 22 is discharged when the cover ring 311 moves upward.

[0028] The alkaline solution uses soda ash or ammonia water, which is discharged into the drum 22 in the shell 1 through the liquid supply pipe 11. The drum 22 is in a rotating state, so that the alkaline solution is attached to the inner wall of the drum 22 due to centrifugal force. After the coal gas or natural gas enters the slide 33, it is discharged to the alkaline solution on the side wall of the drum 22 through the second through hole 331 and the first through hole 32 for desulfurization. The outlet pipe 31 can slide relative to the shell 1 and the drum 22. After the outlet pipe 31 is in a downward state, the cover ring 311 is attached to the port of the drum 22 to prevent the alkaline solution from being discharged along the inner wall of the drum 22 due to centrifugal force. At this time, the first through hole 32 and the second through hole 331 at the bottom of the top are completely overlapped, and the middle part intersects but does not overlap, so that most of the gas is discharged through the top and bottom of the outlet pipe 31, and the initial state of the alkaline solution discharged to the drum 22 is There is a large accumulation at the bottom of the drum 22, and the cover ring 311 covers the port of the drum 22, so that the alkaline solution thrown out by the centrifugal force accumulates at the port of the drum 22, so that the alkaline solution accumulated in these two places is used to desulfurize the gas with a large amount of emission. When the outlet pipe 31 moves upward, the cover ring 311 moves away from the drum 22. At this time, the alkaline solution after the reaction in the drum 22 is thrown out, and at the same time, the first through hole 32 and the second through hole 331 at the top and the bottom are no longer connected, while the middle part is still intersecting, so that the gas is discharged through the middle part of the outlet pipe 31 to avoid the gas being discharged without desulfurization. Then the cover ring 311 moves downward to repeat the above action. Through the above settings, the alkaline solution can fully participate in the desulfurization reaction, thereby reducing the supply speed of the alkaline solution. In addition, the cover ring 311 can also increase the residence time of the gas in the drum 22.

[0029] The bottom walls of the slide cylinder 33 and the air outlet pipe 31 are respectively provided with a coaxially arranged third through hole 34 and a fourth through hole 36. A conical block 35 is connected to the hole wall of the third through hole 34. The large diameter end of the conical block 35 passes through the fourth through hole 36. When the air outlet pipe 31 moves upward relative to the slide cylinder 33, the gap between the hole wall of the conical block 35 and the fourth through hole 36 increases.

[0030] When the outlet pipe 31 moves upward relative to the slide cylinder 33, the distance between the conical block 35 and the fourth through hole 36 increases, so that a large amount of gas can be discharged through the bottom of the outlet pipe 31. At this time, most of the discharged gas can contact the alkaline solution injected into the drum 22 for desulfurization.

[0031] There are multiple air outlet pipes 31, and the tops of the multiple air outlet pipes 31 are commonly connected to a hollow ring 3, and the hollow ring 3 is connected to an air supply pipe 14; there are multiple slide cylinders 33, and the multiple slide cylinders 33 slide in the multiple air outlet pipes 31 respectively, and the multiple slide cylinders 33 are all connected to a rectangular rod 38, and the hollow ring 3 is provided with a hole that cooperates with the rectangular rod 38.

[0032] By providing a plurality of gas outlet pipes 31 and slide cylinders 33 , the gas can be uniformly injected into the rotating cylinder 22 in the housing 1 , thereby further increasing the contact area between the gas and the alkaline solution.

[0033] A mounting ring 37 is connected to the top of the housing 1 , and a plurality of rectangular rods 38 are connected to the mounting ring 37 . An electric telescopic rod 39 is connected to the lower surface of the mounting ring 37 , and an output end of the electric telescopic rod 39 is connected to the hollow ring 3 .

[0034] The mounting ring 37 is fixedly arranged, and the electric telescopic rod 39 can drive the hollow ring 3 to move up and down when it is extended and retracted, thereby driving the air outlet pipe 31 to move up and down relative to the slide cylinder 33, and the cover ring 311 can be close to or away from the rotating cylinder 22.

[0035] A drain pipe 12 and an exhaust pipe 15 are connected to the bottom of the housing 1 , and the drain pipe 12 is connected to an external regeneration tank.

[0036] The purified gas is discharged through the exhaust pipe 15 for subsequent treatment. The position of the exhaust pipe 15 can be adaptively changed according to the gas density and other characteristics to connect with the shell 1. The alkaline solution after the reaction is discharged into the regeneration tank for reduction.

[0037] The bottom of the housing 1 is connected to a motor 2 , an output end of the motor 2 is connected to a rotating shaft 21 , and the rotating shaft 21 is connected to a rotating drum 22 .

[0038] When the motor 2 is started, it drives the rotating shaft 21 to rotate, and the rotating shaft 21 drives the rotating drum 22 to rotate at a high speed, providing a supergravity reaction environment for the alkaline solution and the gas.

[0039] A circulation pump 13 is connected to the discharge pipe 12, and a sliding speed regulator 4 for controlling the circulation pump 13 is connected to the top of the housing 1. The sliding contact of the sliding speed regulator 4 is connected to the hollow ring 3. When the hollow ring 3 moves upward, the sliding speed regulator 4 controls the circulation pump 13 to increase its pumping speed.

[0040] When the cover ring 311 moves down to fit the drum 22, the alkaline solution accumulates in the drum 22. At this time, the pumping speed of the alkaline solution is slow. When the hollow ring 3 drives the cover ring 311 to move up, the alkaline solution in the drum 22 is discharged. At the same time, the hollow ring 3 drives the sliding contact of the sliding speed regulator 4 to move up. At this time, the sliding speed regulator 4 controls the pumping speed of the circulation pump 13 to increase, so that the alkaline solution discharged from the drum 22 is quickly moved out of the outer shell 1, and the alkaline solution is quickly injected into the drum 22 through the liquid supply pipe 11 for replenishment.

[0041] An oxidant supply pipe 5 is provided at the upper portion of the housing 1 , and the oxidant supply pipe 5 is connected to an external regeneration tank.

[0042] The oxidant supply pipe 5 injects the oxidant into the regeneration tank, so that the alkaline solution after the reaction in the regeneration tank is reduced.

[0043] The oxidant supply pipe 5 is connected to a box body 51, and the oxidant supply pipe 5 is connected to the box body 51. A block 52 is slidably connected inside the box body 51, and the block 52 is connected to the hollow ring 3. When the hollow ring 3 moves upward, the oxidant supply pipe 5 is switched from a closed state to an open state or the opening degree increases.

[0044] When the hollow ring 3 moves upward, the block 52 moves upward relative to the box body 51. At this time, the oxidant supply pipe 5 is opened, and the oxidant enters the regeneration tank through the oxidant supply pipe 5 to reduce the alkaline solution. In the initial state, there may be a gap between the block 52 and the bottom wall of the box body 51, so that the oxidant flows slowly. After the hollow ring 3 moves upward, the flow speed of the oxidant is accelerated, and sufficient oxidant is supplied to reduce the alkaline solution that has just been discharged after participating in the reaction.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high gravity wet oxidation desulfurization device, comprising a housing (1), wherein a drum (22) is rotatably connected inside the housing (1), characterized in that: The top of the housing (1) is connected to a liquid supply pipe (11) for adding alkaline solution into the rotating drum (22); the top of the housing (1) is slidably connected to an air outlet pipe (31); a plurality of vertically arranged first through holes (32) are provided on the side wall of the air outlet pipe (31); a slide cylinder (33) is slidably connected inside the air outlet pipe (31); a plurality of vertically arranged second through holes (331) are provided on the side wall of the slide cylinder (33); the air outlet pipe (31) is slidably connected to the slide cylinder (31); 3) after the upward movement, the first through hole (32) at the top and the bottom are coaxial with the second through hole (331), and the first through hole (32) at the middle intersects with the second through hole (331) and is not coaxial; and after the air outlet pipe (31) moves downward relative to the slide cylinder (33), the first through hole (32) at the top and the bottom do not intersect with the second through hole (331), and the first through hole (32) at the middle intersects with the second through hole (331) and is not coaxial; The inner cavity of the rotating drum (22) is in a trumpet shape from bottom to top, and the side wall of the air outlet pipe (31) is connected to a cover ring (311). When the cover ring (311) moves downward, it fits against the port of the rotating drum (22), and when the cover ring (311) moves upward, the alkaline solution in the rotating drum (22) is discharged.

2. The ultra-gravity wet oxidation desulfurization equipment according to claim 1 is characterized in that: The bottom walls of the slide cylinder (33) and the air outlet pipe (31) are respectively provided with a third through hole (34) and a fourth through hole (36) which are coaxially arranged. A conical block (35) is connected to the hole wall of the third through hole (34). The large diameter end of the conical block (35) passes through the fourth through hole (36). When the air outlet pipe (31) moves upward relative to the slide cylinder (33), the hole wall gap between the conical block (35) and the fourth through hole (36) increases.

3. The ultra-gravity wet oxidation desulfurization equipment according to claim 2 is characterized in that: There are a plurality of air outlet pipes (31), and the tops of the plurality of air outlet pipes (31) are commonly connected to a hollow ring (3), and the hollow ring (3) is connected to an air supply pipe (14).

4. The ultra-gravity wet oxidation desulfurization equipment according to claim 3 is characterized in that: There are multiple slide cylinders (33), and the multiple slide cylinders (33) slide in the multiple air outlet pipes (31) respectively. The multiple slide cylinders (33) are all connected to a rectangular rod (38), and the hollow ring (3) is provided with a hole that matches the rectangular rod (38).

5. The ultra-gravity wet oxidation desulfurization equipment according to claim 4 is characterized in that: The top of the housing (1) is connected to a mounting ring (37), the plurality of rectangular rods (38) are all connected to the mounting ring (37), the lower surface of the mounting ring (37) is connected to an electric telescopic rod (39), and the output end of the electric telescopic rod (39) is connected to the hollow ring (3).

6. The ultra-gravity wet oxidation desulfurization equipment according to claim 5 is characterized in that: A liquid discharge pipe (12) and an exhaust pipe (15) are connected to the bottom of the housing (1), and the liquid discharge pipe (12) is connected to an external regeneration tank.

7. The ultra-gravity wet oxidation desulfurization equipment according to claim 6 is characterized in that: The bottom of the housing (1) is connected to a motor (2), the output end of the motor (2) is connected to a rotating shaft (21), and the rotating shaft (21) is connected to the rotating drum (22).

8. The ultra-gravity wet oxidation desulfurization equipment according to claim 7 is characterized in that: The discharge pipe (12) is connected to a circulation pump (13), the top of the housing (1) is connected to a sliding speed regulator (4) for controlling the circulation pump (13), the sliding contact of the sliding speed regulator (4) is connected to the hollow ring (3), and when the hollow ring (3) moves upward, the sliding speed regulator (4) controls the circulation pump (13) to increase its pumping speed.

9. The ultra-gravity wet oxidation desulfurization equipment according to claim 8, characterized in that: An oxidant supply pipe (5) is provided at the upper portion of the housing (1), and the oxidant supply pipe (5) is connected to an external regeneration tank.

10. The ultra-gravity wet oxidation desulfurization equipment according to claim 9, characterized in that: The oxidant supply pipe (5) is connected to a box body (51), the oxidant supply pipe (5) is communicated with the box body (51), a block (52) is slidably connected inside the box body (51), the block (52) is connected to the hollow ring (3), and when the hollow ring (3) moves upward, the oxidant supply pipe (5) is switched from a closed state to an open state or the opening degree is increased.

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