Anaerobic digestion biogas desulfurization device

Abstract

This utility model relates to the technical field of desulfurization devices, and in particular to an anaerobic digestion biogas desulfurization device, which enables all desulfurizing agents participating in the main desulfurization treatment steps to participate in the oxidation and regeneration cycle, so that the regeneration of the desulfurizing agent is uniform and sufficient, and the desulfurization efficiency is improved. It includes a desulfurization box, an inlet pipe and an outlet pipe; it also includes a motor, a shaft tube, a screen, a guide screen plate, a third screen plate and a fourth screen plate. The motor is installed on the desulfurization box, and the shaft tube is vertically rotatably installed in the desulfurization chamber of the desulfurization box. The screen, the guide screen plate, the third screen plate and the fourth screen plate are installed in the desulfurization box from top to bottom. The screen, the third screen plate and the fourth screen plate are inverted cones, and the guide screen plate is a regular cone. The shaft tube passes through the middle through hole of the screen, the guide screen plate, the third screen plate and the fourth screen plate. A gap is provided between the outer edge of the guide screen plate and the third screen plate and the inner wall of the desulfurization box.

Description

Technical Field

[0001] This utility model relates to the technical field of desulfurization devices, and in particular to an anaerobic digestion biogas desulfurization device. Background Technology

[0002] Biogas produced by anaerobic digestion requires desulfurization. Chinese utility model patent CN219111275U discloses an anaerobic digestion biogas desulfurization device. This device includes a desulfurization tank, a motor bracket mounted on the top of the tank, a motor mounting plate fixedly mounted on the lower left side of the tank, a transfer bin fixedly mounted on the right side of the tank, and solenoid valves fixedly mounted on the upper and lower left sides of the tank and the lower right side of the transfer bin. This utility model has the following advantages and effects: it allows the desulfurizing agent to circulate, enabling the reduced desulfurizing agent to fully contact with oxygen and undergo oxidation regeneration, restoring the desulfurization effect. This results in a faster and more efficient oxidation regeneration rate of the desulfurizing agent within the device, facilitating continuous desulfurization. Furthermore, it allows sufficient time for the biogas produced by anaerobic digestion to contact the desulfurizing agent for desulfurization, significantly reducing the risk of biogas leaking out before desulfurization and resulting in a better desulfurization effect.

[0003] However, when the desulfurizing agent of the above-mentioned separation device circulates between the first filter plates, it only passes through the discharge hole and falls. Therefore, the desulfurizing agent that is far from the discharge hole cannot fully participate in the circulation, resulting in uneven regeneration of the desulfurizing agent, which is not conducive to the desulfurizing agent to perform uniform and sufficient desulfurization of biogas. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an anaerobic digestion biogas desulfurization device that enables all desulfurizing agents involved in the main desulfurization treatment steps to participate in the oxidation and regeneration cycle, so as to make the regeneration of the desulfurizing agent uniform and sufficient and improve the desulfurization efficiency.

[0005] This utility model discloses an anaerobic digestion biogas desulfurization device, comprising a desulfurization box, an inlet pipe, and an outlet pipe. The desulfurization box contains a desulfurization chamber. Both the inlet and outlet pipes are installed on the desulfurization box. The inlet pipe connects to the lower part of the desulfurization chamber, and the outlet pipe connects to the top of the desulfurization chamber. The device also includes a motor, a shaft tube, a screen, a guide screen plate, a third screen plate, and a fourth screen plate. The motor is installed on the desulfurization box. The shaft tube is vertically rotatable within the desulfurization chamber. Screens 1, 3, and 4 are installed sequentially from top to bottom within the desulfurization chamber. Screens 1, 3, and 4 are inverted cones, and the guide screen plate is a regular cone. The shaft tube passes through a central through-hole in each of the screens. The shaft tube has a hollow upper section. The desulfurization chamber consists of a lower hollow channel and a lower hollow channel. Screen 1 and the guide screen plate are located outside the upper hollow channel, while screen plates 3 and 4 are located outside the lower hollow channel. Multiple vertical holes 1 are provided on the outer wall of the shaft tube, communicating with the upper hollow channel. The upper part of vertical holes 1 is staggered with multiple vertical holes 2 on the middle perimeter plate of screen 1, and the lower part of vertical holes 1 is located between screen 1 and the guide screen plate. A gap 1 is provided between the outer edges of the guide screen plate and screen plate 3 and the inner wall of the desulfurization chamber. Multiple vertical holes 3 are provided on the outer wall of the shaft tube, communicating with the lower hollow channel. The vertical holes 3 are staggered with multiple vertical holes 4 on the middle perimeter plate of screen plate 4. Desulfurizing agent is filled in the desulfurization chamber above screen 1, and the space between screen plates 4 and 3 is also filled with desulfurizing agent. During operation, biogas is input into the desulfurization chamber through the inlet pipe. In the lower part of the desulfurization chamber, biogas passes through the desulfurizing agent between screen plates four and three, where most of the sulfur in the biogas undergoes desulfurization treatment one. Afterward, the biogas rises and passes through the guide screen plate and screen one, allowing the desulfurizing agent on screen one to desulfurize the remaining small amount of sulfur in the biogas two. This desulfurization treatment one is the main desulfurization step. When the activity of the desulfurizing agent between screen plates four and three decreases, motor one drives the shaft tube to rotate by an angle one, aligning the vertical hole three of the shaft tube with the numerical control four of screen plate four. This allows the desulfurizing agent between screen plates four and three to enter the lower hollow channel of the shaft tube and fall to the bottom of the desulfurization chamber. The desulfurizing agent is then regenerated through the oxidation regeneration mechanism. The regenerated desulfurizing agent is then backfilled above screen one, forming a cycle. After the desulfurizing agent in screen plates four and three is emptied... Motor 1 drives the shaft tube to rotate by angle 2 again, causing the CNC 3 and vertical hole 4 to close alternately. At the same time, vertical holes 1 and 2 of the shaft tube are aligned, allowing the desulfurization agent on screen 1 to flow into the guide screen plate through the upper hollow channel of the shaft tube. It then flows down the guide screen plate and fills the gap between screen plate 3 and screen plate 4 through the gap between the guide screen plate and the desulfurization box. When the gap between screen plate 4 and screen plate 3 is filled with desulfurizing agent, motor 1 drives the shaft tube to rotate by angle 3, causing the CNC 1 of the shaft tube to close alternately with vertical hole 2 of screen 1, while vertical holes 3 and 4 remain closed. Compared with the existing technology, this allows all the desulfurizing agent involved in the main desulfurization process to participate in the oxidation and regeneration cycle, ensuring uniform and sufficient regeneration of the desulfurizing agent and enabling uniform and sufficient desulfurization of biogas by the desulfurizing agent, thereby improving desulfurization efficiency.

[0006] Preferably, the assembly also includes a lifting cylinder, a drive shaft, spiral blades, an oxygen inlet pipe, and an oxygen outlet pipe. The lifting cylinder is installed outside the desulfurization box. A second feed pipe is installed at the lower end of the lifting cylinder, and a return pipe is installed at the upper end of the lifting cylinder. The second feed pipe is connected to the bottom of the desulfurization chamber of the desulfurization box, and the return pipe is connected to the top of the desulfurization chamber of the desulfurization box. The drive shaft is vertically rotatably installed inside the lifting cylinder, and spiral blades are installed on the outer wall of the drive shaft. The oxygen inlet pipe and the oxygen outlet pipe are installed on the lifting cylinder. The oxygen inlet pipe is connected to the lower part of the lifting cylinder, and the oxygen outlet pipe... The outlet pipe is connected to the upper part of the lifting cylinder; the desulfurizing agent at the bottom of the desulfurization chamber of the desulfurization box enters the lifting cylinder through the feed pipe 2. The drive shaft drives the spiral blades to rotate, so that the spiral blades transport the desulfurizing agent upward. The oxygen inlet pipe is connected to the external oxygen system. Oxygen is input into the lifting cylinder through the oxygen inlet pipe. The oxygen mixes with the desulfurizing agent, causing the desulfurizing agent to be oxidized and regenerated. After regeneration, the desulfurizing agent is transported back to the upper part of the desulfurization chamber of the desulfurization box through the return pipe. The residual oxygen is discharged through the oxygen outlet pipe, realizing the oxidative regeneration of the desulfurizing agent.

[0007] Preferably, the oxygen inlet pipe and the oxygen outlet pipe are located between the feed pipe two and the return pipe of the lifting cylinder; the above arrangement prevents oxygen from entering the bottom of the desulfurization chamber of the desulfurization box through the feed pipe two of the lifting cylinder, and prevents residual oxygen from entering the top of the desulfurization chamber of the desulfurization box through the return pipe, thereby improving the desulfurization efficiency.

[0008] Preferably, it also includes a stirring shaft and multiple material feeding plates. The stirring shaft is rotatably installed at the bottom of the desulfurization chamber of the desulfurization box, and multiple material feeding plates are installed on the outer wall of the stirring shaft. The stirring shaft drives the multiple material feeding plates to rotate, and the multiple material feeding plates push the desulfurizing agent at the bottom of the desulfurization chamber of the desulfurization box towards the feed pipe of the lifting cylinder, thereby improving the efficiency of the desulfurizing agent entering the lifting cylinder.

[0009] Preferably, it also includes a connector, the lower end of which is connected to the upper end of the stirring shaft, and the upper end of which is connected to the lower end of the shaft tube; when the shaft tube rotates, the connector drives the stirring shaft and multiple material-pulling plates to rotate, thereby driving the stirring shaft and the material-pulling plates, which is practical.

[0010] Preferably, it also includes a rotating shaft and multiple gates. The rotating shaft is rotatably mounted on the outer wall of the gas outlet pipe, and multiple gates are installed on the rotating shaft. The multiple gates can close the inlet end of the gas outlet pipe. When the rotating shaft is rotated, the rotating shaft drives the multiple gates to rotate. When the gates open the inlet end of the gas outlet pipe, biogas is discharged through the gas outlet pipe. When the gates close the inlet end of the gas outlet pipe, they prevent biogas from being discharged through the gas outlet pipe, thus prolonging the biogas desulfurization time and improving the desulfurization efficiency.

[0011] Preferably, it also includes bevel gear one and bevel gear two. The bevel gear one is concentrically mounted on the outer wall of the shaft tube, and bevel gear two is rotatably mounted in the desulfurization chamber of the desulfurization box. Bevel gear two meshes with bevel gear one and is connected to the rotating shaft for transmission. The rotation of the shaft tube drives bevel gear one to rotate, bevel gear one meshes with bevel gear two to rotate, and bevel gear two drives the rotating shaft and multiple gates to rotate, thereby realizing the drive of the rotating shaft and gates.

[0012] Compared with the prior art, the beneficial effects of this utility model are: it enables all desulfurizing agents involved in the main desulfurization process to participate in the oxidation and regeneration cycle, making the regeneration of the desulfurizing agent uniform and sufficient, and enabling the desulfurizing agent to perform uniform and sufficient desulfurization of biogas, thereby improving the desulfurization efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a schematic diagram of the isometric structure of this utility model; Figure 4 It is a structural diagram of the motor, shaft tube, screen, guide screen plate, screen plate three, screen plate four, rotating shaft and gate plate, etc. Figure 5 This is a structural diagram showing the disassembled state of the motor, shaft tube, screen, guide screen plate, screen plate three, screen plate four, rotating shaft and gate plate, etc. Figure 6 It is a structural diagram of the stirring shaft, the feeding plate, and the connecting parts.

[0014] The following are labels in the attached diagram: 1. Desulfurization box; 2. Inlet pipe; 3. Outlet pipe; 4. Motor 1; 5. Shaft tube; 6. Screen 1; 7. Guide screen plate; 8. Screen plate 3; 9. Screen plate 4; 10. Lifting cylinder; 11. Drive shaft; 12. Spiral blade; 13. Oxygen inlet pipe; 14. Oxygen outlet pipe; 15. Stirring shaft; 16. Feeding plate; 17. Connecting piece; 18. Rotating shaft; 19. Gate plate; 20. Bevel gear 1; 21. Bevel gear 2. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0016] like Figures 1 to 6As shown, an anaerobic digestion biogas desulfurization device includes a desulfurization box 1, an inlet pipe 2, and an outlet pipe 3. The desulfurization box 1 has a desulfurization chamber inside. Both the inlet pipe 2 and the outlet pipe 3 are installed on the desulfurization box 1. The inlet pipe 2 communicates with the lower part of the desulfurization chamber of the desulfurization box 1, and the outlet pipe 3 communicates with the top of the desulfurization chamber of the desulfurization box 1. It also includes a motor 4, a shaft tube 5, a screen 6, a guide screen plate 7, a third screen plate 8, and a fourth screen plate 9. The motor 4 is installed on the desulfurization box 1. The shaft tube 5 is vertically rotatably installed in the desulfurization chamber of the desulfurization box 1. The screen 6, guide screen plate 7, third screen plate 8, and fourth screen plate 9 are installed sequentially from top to bottom in the desulfurization chamber of the desulfurization box 1. The screen 6, third screen plate 8, and fourth screen plate 9 are inverted cones, and the guide screen plate 7 is a regular cone. The shaft tube 5 passes through the screen 6. 6. The middle through holes of the feed guide screen plate 7, screen plate three 8 and screen plate four 9; the upper hollow channel and the lower hollow channel are set inside the shaft tube 5; screen one 6 and feed guide screen plate 7 are located outside the upper hollow channel; screen plate three 8 and screen plate four 9 are located outside the lower hollow channel; multiple vertical holes one are set on the outer wall of the shaft tube 5; vertical holes one are connected to the upper hollow channel of the shaft tube 5; the upper part of vertical holes one is staggered with multiple vertical holes two on the middle surrounding plate of screen plate one 6; the lower part of vertical holes one is located between screen plate one 6 and feed guide screen plate 7; gap one is set between the outer edge of feed guide screen plate 7 and screen plate three 8 and the inner wall of desulfurization box 1; multiple vertical holes three are set on the outer wall of the shaft tube 5; vertical holes three are connected to the lower hollow channel of the shaft tube 5; vertical holes three are staggered with multiple vertical holes four on the middle surrounding plate of screen plate four 9.

[0017] Desulfurizing agent is filled into the desulfurization chamber above screen 6, and the space between screen plate 9 and screen plate 8 is also filled with desulfurizing agent. During operation, biogas is input into the lower part of the desulfurization chamber of desulfurization box 1 through the air inlet pipe 2. The biogas passes through the desulfurizing agent between screen plate 9 and screen plate 8, desulfurizing most of the sulfur in the biogas. Then, the biogas rises and passes through the guide screen plate 7 and screen 6, allowing the desulfurizing agent on screen 6 to desulfurize the remaining small amount of sulfur in the biogas. This desulfurization process is the main desulfurization step. When the activity of the desulfurizing agent between screen plate 9 and screen plate 8 decreases, motor 4 drives shaft tube 5 to rotate by an angle, aligning the vertical hole 3 of shaft tube 5 with the CNC 4 of screen plate 9. This allows the desulfurizing agent between screen plate 9 and screen plate 8 to enter the lower hollow channel of shaft tube 5 and fall to the bottom of the detachment chamber of desulfurization box 1. The desulfurizing agent is then regenerated by the oxidation regeneration mechanism and refilled back into the screen. Above screen 6, a circulation is formed. After the desulfurizing agent in screen 9 and screen 8 is emptied, motor 4 drives shaft tube 5 to rotate by angle 2, so that the CNC 3 and vertical hole 4 are closed alternately. At the same time, vertical hole 1 and vertical hole 2 of shaft tube 5 are aligned, so that the desulfurizing agent on screen 6 flows into the guide screen 7 through the upper hollow channel of shaft tube 5, and flows down along the guide screen 7 through the gap 1 between guide screen 7 and desulfurization box 1 to fill the space between screen 8 and screen 9. When the space between screen 9 and screen 8 is filled with desulfurizing agent, motor 4 drives shaft tube 5 to rotate by angle 3, so that the CNC 1 of shaft tube 5 and vertical hole 2 of screen 6 are closed alternately, and vertical hole 3 and vertical hole 4 remain closed. Compared with the existing technology, this technology can enable all the desulfurizing agent involved in the main desulfurization process to participate in the oxidation and regeneration cycle, so that the regeneration of the desulfurizing agent is uniform and sufficient, and the desulfurizing agent can perform uniform and sufficient desulfurization of biogas, thereby improving the desulfurization efficiency.

[0018] It also includes a lifting cylinder 10, a drive shaft 11, a spiral blade 12, an oxygen inlet pipe 13, and an oxygen outlet pipe 14. The lifting cylinder 10 is installed outside the desulfurization box 1. A second feed pipe is provided at the lower end of the lifting cylinder 10, and a return pipe is provided at the upper end of the lifting cylinder 10. The second feed pipe is connected to the bottom of the desulfurization chamber of the desulfurization box 1, and the return pipe is connected to the top of the desulfurization chamber of the desulfurization box 1. The drive shaft 11 is vertically rotatably installed inside the lifting cylinder 10, and the spiral blade 12 is installed on the outer wall of the drive shaft 11. The oxygen inlet pipe 13 and the oxygen outlet pipe 14 are installed on the lifting cylinder. On the upper part of the lifting cylinder 10, the oxygen inlet pipe 13 is connected to the lower part of the lifting cylinder 10, and the oxygen outlet pipe 14 is connected to the upper part of the lifting cylinder 10; the oxygen inlet pipe 13 and the oxygen outlet pipe 14 are located between the feed pipe 2 and the return pipe of the lifting cylinder 10; it also includes a stirring shaft 15 and multiple material-pulling plates 16, the stirring shaft 15 is rotatably installed at the bottom of the desulfurization chamber of the desulfurization box 1, and multiple material-pulling plates 16 are installed on the outer wall of the stirring shaft 15; it also includes a connector 17, the lower end of the connector 17 is connected to the upper end of the stirring shaft 15, and the upper end of the connector 17 is connected to the lower end of the shaft tube 5.

[0019] When the shaft tube 5 rotates, it drives the stirring shaft 15 and multiple material-pulling plates 16 to rotate via the connecting piece 17, thereby driving the stirring shaft 15 and the material-pulling plates 16. The stirring shaft 15 drives the multiple material-pulling plates 16 to rotate, and the multiple material-pulling plates 16 push the desulfurizing agent at the bottom of the desulfurization chamber of the desulfurization box 1 towards the feed pipe 2 of the lifting cylinder 10, thereby improving the efficiency of the desulfurizing agent entering the lifting cylinder 10. The desulfurizing agent at the bottom of the desulfurization chamber of the desulfurization box 1 enters the lifting cylinder 10 through the feed pipe 2. The drive shaft 11 drives the spiral blades 12 to rotate, so that the spiral blades 12 convey the desulfurizing agent upward. The oxygen inlet pipe 13 is connected to an external oxygen system. Oxygen is fed into the feed cylinder 10 through the oxygen inlet pipe 13. The oxygen mixes with the desulfurizing agent, causing the desulfurizing agent to oxidize and regenerate. After regeneration, the desulfurizing agent is returned to the upper part of the desulfurization chamber of the desulfurization box 1 through the return pipe. The residual oxygen is discharged through the oxygen outlet pipe 14, thus realizing the oxidative regeneration of the desulfurizing agent. The above arrangement prevents oxygen from entering the bottom of the desulfurization chamber of the desulfurization box 1 through the feed pipe 2 of the feed cylinder 10, and also prevents residual oxygen from entering the top of the desulfurization chamber of the desulfurization box 1 through the return pipe, thereby improving the desulfurization efficiency. Example 2

[0020] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, based on Embodiment 1, it also includes a rotating shaft 18 and multiple gates 19. The rotating shaft 18 is rotatably mounted on the outer wall of the exhaust pipe 3, and multiple gates 19 are mounted on the rotating shaft 18. The multiple gates 19 can close the input end of the exhaust pipe 3. It also includes a bevel gear 1 20 and a bevel gear 21. The bevel gear 1 20 is concentrically mounted on the outer wall of the shaft tube 5, and the bevel gear 21 is rotatably mounted in the desulfurization chamber of the desulfurization box 1. The bevel gear 21 meshes with the bevel gear 1 20, and the bevel gear 21 is connected to the rotating shaft 18 for transmission.

[0021] The rotation of shaft tube 5 drives the rotation of bevel gear 20, which meshes with bevel gear 21. Bevel gear 21 drives the rotating shaft 18 and multiple gates 19 to rotate. When the gate 19 opens the input end of the gas outlet pipe 3, biogas is discharged through the gas outlet pipe 3. When the gate 19 closes the input end of the gas outlet pipe 3, it prevents biogas from being discharged through the gas outlet pipe 3, thus prolonging the biogas desulfurization time and improving the desulfurization efficiency.

[0022] like Figures 1 to 6As shown, this utility model discloses an anaerobic digestion biogas desulfurization device. During operation, biogas is first input into the lower part of the desulfurization chamber of the desulfurization box 1 through the inlet pipe 2. The biogas passes through the desulfurizing agent between screen plate 9 and screen plate 8, where most of the sulfur in the biogas undergoes desulfurization treatment one. The biogas rises and passes through the guide screen plate 7 and screen 6, where the desulfurizing agent on screen 6 performs desulfurization treatment two on the remaining small amount of sulfur in the biogas. This desulfurization treatment one is the main desulfurization step. Afterwards, when screen plate 9 and screen 8... When the activity of the desulfurizer between plates 3 and 8 decreases, motor 4 drives shaft tube 5 to rotate by an angle, aligning the vertical hole 3 of shaft tube 5 with the CNC 4 of screen plate 4, causing the desulfurizer between screen plate 4 and screen plate 3 to enter the lower hollow channel of shaft tube 5 and fall to the bottom of the detachment chamber of desulfurization box 1. The desulfurizer is then regenerated through the oxidation regeneration mechanism. The regenerated desulfurizer is then backfilled above screen 6, forming a cycle. After the desulfurizer in screen plate 4 and screen plate 3 is emptied, motor 4... The shaft tube 5 is rotated by an angle of two again, causing the CNC three and vertical hole four to close alternately. At the same time, vertical holes one and two of the shaft tube 5 are aligned, allowing the desulfurization agent on screen one 6 to flow through the upper hollow channel of the shaft tube 5 onto the guide screen plate 7. The agent then flows downwards along the guide screen plate 7, filling the gap between the guide screen plate 7 and the desulfurization box 1 between screen three 8 and screen four 9. When the gap between screen four 9 and screen three 8 is filled with desulfurizing agent, motor one 4 drives the shaft tube 5 to rotate by an angle of three, causing the shaft tube 5... The vertical holes of the CNC machine and the screen 6 are closed alternately, and the vertical holes 3 and 4 remain closed. Finally, the shaft tube 5 rotates, driving the bevel gear 20 to rotate. The bevel gear 20 meshes with the bevel gear 21 to rotate. The bevel gear 21 drives the rotating shaft 18 and multiple gates 19 to rotate. When the gate 19 opens the input end of the gas outlet pipe 3, the biogas is discharged through the gas outlet pipe 3. When the gate 19 closes the input end of the gas outlet pipe 3, it prevents the biogas from being discharged through the gas outlet pipe 3, thus extending the biogas desulfurization time.

[0023] The main functions achieved by this utility model are: 1. It enables all desulfurizing agents involved in the main desulfurization process to participate in the oxidation and regeneration cycle, ensuring uniform and sufficient regeneration of the desulfurizing agent and enabling uniform and sufficient desulfurization of biogas, thereby improving desulfurization efficiency. 2. The gate 19 closes and then opens the input end of the gas outlet pipe 3, blocking the biogas from being discharged through the gas outlet pipe 3, thus prolonging the biogas desulfurization time and improving the desulfurization efficiency.

[0024] The anaerobic digestion biogas desulfurization device of this utility model uses common mechanical methods for installation, connection, or setting. Any method that can achieve its beneficial effects can be implemented. The desulfurization box 1, motor 4, shaft tube 5, screen 6, guide screen 7, screen 8, screen 4, lifting cylinder 10, drive shaft 11, spiral blade 12, oxygen inlet pipe 13, oxygen outlet pipe 14, feeding plate 16, rotating shaft 18, gate 19, bevel gear 20, and bevel gear 21 of this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An anaerobic digestion biogas desulfurization device, comprising a desulfurization chamber (1), an inlet pipe (2), and an outlet pipe (3), wherein a desulfurization chamber is provided inside the desulfurization chamber (1), the inlet pipe (2) and the outlet pipe (3) are both installed on the desulfurization chamber (1), the inlet pipe (2) is connected to the lower part of the desulfurization chamber of the desulfurization chamber (1), and the outlet pipe (3) is connected to the top of the desulfurization chamber of the desulfurization chamber (1); characterized in that, It also includes a motor (4), a shaft tube (5), a screen (6), a guide screen (7), a screen (8), and a screen (9). The motor (4) is installed on the desulfurization box (1). The shaft tube (5) is installed vertically in the desulfurization chamber of the desulfurization box (1). The screen (6), guide screen (7), screen (8), and screen (9) are installed sequentially from top to bottom in the desulfurization chamber of the desulfurization box (1). The screen (6), screen (8), and screen (9) are inverted cones, and the guide screen (7) is a regular cone. The shaft tube (5) passes through the middle through hole of the screen (6), guide screen (7), screen (8), and screen (9). The shaft tube (5) is provided with an upper hollow channel and a lower hollow channel inside. Screen 1 (6) and guide screen (7) are located outside the upper hollow channel, screen 3 (8) and screen 4 (9) are located outside the lower hollow channel, multiple vertical holes 1 are provided on the outer wall of the shaft tube (5), vertical holes 1 are connected to the upper hollow channel of the shaft tube (5), the upper part of vertical holes 1 is staggered with multiple vertical holes 2 on the middle circumference of screen 1 (6), the lower part of vertical holes 1 is located between screen 1 (6) and guide screen (7), gap 1 is provided between the outer edge of guide screen (7) and screen 3 (8) and the inner wall of desulfurization box (1), multiple vertical holes 3 are provided on the outer wall of the shaft tube (5), vertical holes 3 are connected to the lower hollow channel of the shaft tube (5), vertical holes 3 are staggered with multiple vertical holes 4 on the middle circumference of screen 4 (9).

2. The anaerobic digestion biogas desulfurization device as described in claim 1, characterized in that, It also includes a lifting cylinder (10), a drive shaft (11), a spiral blade (12), an oxygen inlet pipe (13), and an oxygen outlet pipe (14). The lifting cylinder (10) is installed outside the desulfurization box (1). The lower end of the lifting cylinder (10) is provided with a second feed pipe, and the upper end of the lifting cylinder (10) is provided with a return pipe. The second feed pipe is connected to the bottom of the desulfurization chamber of the desulfurization box (1), and the return pipe is connected to the top of the desulfurization chamber of the desulfurization box (1). The drive shaft (11) is vertically rotated and installed inside the lifting cylinder (10). The spiral blade (12) is installed on the outer wall of the drive shaft (11). The oxygen inlet pipe (13) and the oxygen outlet pipe (14) are installed on the lifting cylinder (10). The oxygen inlet pipe (13) is connected to the lower part of the lifting cylinder (10), and the oxygen outlet pipe (14) is connected to the upper part of the lifting cylinder (10).

3. The anaerobic digestion biogas desulfurization device as described in claim 2, characterized in that, The oxygen inlet pipe (13) and the oxygen outlet pipe (14) are located between the feed pipe and the return pipe of the feed cylinder (10).

4. The anaerobic digestion biogas desulfurization device as described in claim 1, characterized in that, It also includes a stirring shaft (15) and multiple material feeding plates (16). The stirring shaft (15) is rotatably installed at the bottom of the desulfurization chamber of the desulfurization box (1), and multiple material feeding plates (16) are installed on the outer wall of the stirring shaft (15).

5. The anaerobic digestion biogas desulfurization device as described in claim 4, characterized in that, It also includes a connector (17), the lower end of which is connected to the upper end of the stirring shaft (15), and the upper end of which is connected to the lower end of the shaft tube (5).

6. The anaerobic digestion biogas desulfurization device as described in claim 1, characterized in that, It also includes a rotating shaft (18) and multiple gates (19). The rotating shaft (18) is rotatably mounted on the outer wall of the air outlet pipe (3). Multiple gates (19) are mounted on the rotating shaft (18). The multiple gates (19) can close the input end of the air outlet pipe (3).

7. The anaerobic digestion biogas desulfurization device as described in claim 6, characterized in that, It also includes bevel gear one (20) and bevel gear two (21). Bevel gear one (20) is concentrically mounted on the outer wall of the shaft tube (5). Bevel gear two (21) is rotatably mounted in the desulfurization chamber of the desulfurization box (1). Bevel gear two (21) meshes with bevel gear one (20) and bevel gear two (21) is connected to the rotating shaft (18) for transmission.

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