Equipment for removing hydrogen sulfide in kitchen anaerobic biogas

Abstract

The utility model relates to the technical field of biogas treatment equipment, in particular to hydrogen sulfide removal equipment in kitchen anaerobic biogas, which comprises a hydrogen sulfide removal box, a biogas input pipe and a biogas output pipe are respectively arranged on the left side and the right side of the hydrogen sulfide removal box, and an operation port is arranged on the front side of the hydrogen sulfide removal box. The front side of the hydrogen sulfide removal box is provided with a cover plate used for sealing the operation opening, rectangular fixing plates are arranged on the upper side and the lower side of the inner wall of the hydrogen sulfide removal box, partition plates are arranged between the two rectangular fixing plates and close to the left side and the right side, rectangular air passing holes are formed in the side faces of the partition plates, and a rectangular box body is arranged between the two partition plates. And breathable net plates penetrate through the left side and the right side of the rectangular box body. According to the device for removing hydrogen sulfide in kitchen anaerobic biogas, through the design of the operation opening and the detachable rectangular box body, a worker can directly pull out the box body from the front side of the device to replace a desulfurizing agent without climbing up by means of a tool, and the operation difficulty and potential safety hazards are remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of biogas treatment equipment, specifically to a hydrogen sulfide removal device for anaerobic biogas from kitchen waste. Background Technology

[0002] Anaerobic digestion of kitchen waste is a renewable energy source produced through the anaerobic fermentation of food waste (such as leftover food and kitchen scraps) by microorganisms. During anaerobic digestion, microorganisms decompose organic matter, generating biogas whose main components are methane and carbon dioxide. Kitchen waste biogas can be used for various purposes, including power generation, heating, and fuel, and can effectively reduce the environmental pollution caused by kitchen waste. However, the presence of hydrogen sulfide in biogas is a significant problem. Hydrogen sulfide is a toxic gas; high concentrations can corrode equipment and harm the environment and human health. Therefore, hydrogen sulfide must be effectively removed before biogas can be utilized.

[0003] Patent CN221028290U discloses a natural gas and biogas desulfurization device, including an outer shell component with an internal cavity for the flow of natural gas and biogas; a movable second permeable tank with a second sealing cap screwed onto one side, and desulfurizing agent filled between the second permeable tank and the second sealing cap; and a driving component fixedly connected to the outer shell component, with one end of the driving component connected to the second permeable tank. This invention uses an electric push rod to move a side plate, which in turn moves a second plate, which in turn moves the second sealing cap and the second permeable tank. The second permeable tank then moves the desulfurizing agent to the outside of the second tank, allowing for easy replacement of the desulfurizing agent without needing to replace it inside the device, thus improving the replacement efficiency.

[0004] The existing technology described above removes hydrogen sulfide from biogas using a desulfurizing agent inside the second permeable tank. When the desulfurizing agent needs to be replaced, the drive mechanism moves the second permeable tank outward and reverses the second sealing cover, separating it from the tank, thus allowing for desulfurization. However, a drawback of the current design is that the drive mechanism pushes the second permeable tank upward during operation, resulting in a high position. This requires workers to climb using tools when replacing the desulfurizing agent, and the considerable depth of the second permeable tank makes cleaning the desulfurizing agent cumbersome, thus affecting overall replacement efficiency. Therefore, we propose a hydrogen sulfide removal device for anaerobic biogas from kitchen waste. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogen sulfide removal device for anaerobic biogas from kitchen waste, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hydrogen sulfide removal device for anaerobic biogas from kitchen waste includes a hydrogen sulfide removal chamber, which provides a sealed processing space and accommodates other components. The left side of the hydrogen sulfide removal chamber is equipped with a biogas inlet pipe for introducing biogas containing hydrogen sulfide, and the right side of the hydrogen sulfide removal chamber is equipped with a biogas outlet pipe for discharging the desulfurized purified biogas. An operation port is provided on the front side of the hydrogen sulfide removal chamber for maintenance and desulfurizing agent replacement. A cover plate is provided on the front side of the hydrogen sulfide removal chamber to seal the operation port and ensure the equipment's airtightness.

[0008] A circular hole is provided in the middle of the front side of the cover plate as an installation channel for the threaded rod. The circular hole is connected to the threaded rod for adjusting the position of the pressure plate. The front end of the threaded rod is provided with a pressure plate to press the cover plate to enhance the seal.

[0009] The hydrogen sulfide removal chamber has rectangular fixing plates on both the upper and lower sides of its inner wall, supporting the partition and rectangular box. Partitions are located between the two rectangular fixing plates and near the left and right sides to separate the biogas flow path and guide gas distribution. Rectangular air passages are opened on the sides of the partitions to allow biogas to pass evenly through the desulfurizing agent area. A rectangular box is located between the two partitions, containing granular desulfurizing agent for adsorption or reaction removal of hydrogen sulfide. Breathable mesh plates penetrate the left and right sides of the rectangular box to ensure biogas enters the box and contacts the desulfurizing agent. A positioning longitudinal tube is located between the front and rear sides of the inner wall of the rectangular box, at its center, through which an auxiliary positioning rod passes to achieve accurate positioning of the box. Both ends of the positioning longitudinal tube penetrate the inner wall of the rectangular box. A positioning rod is located in the center of the rear side of the inner wall of the hydrogen sulfide removal chamber, passing through the positioning longitudinal tube. The front end of the positioning rod has a threaded groove for threaded connection with a threaded rod, achieving linkage and fixation between the threaded rod and the positioning rod, thereby fixing the position of the cover plate.

[0010] Preferably, the front side of the hydrogen sulfide removal chamber is provided with four positioning protrusions arranged in a matrix, and the rear side of the cover plate and near the four corners are provided with positioning holes. The four positioning protrusions are respectively inserted into the four positioning holes to assist the cover plate in quick positioning.

[0011] Preferably, the rear side of the cover plate is provided with a sealing rear plate, and the outer side of the sealing rear plate is provided with a frame-shaped rubber pad. The outer side of the frame-shaped rubber pad is tightly fitted with the inner wall of the operating port to enhance the sealing of the operating port and prevent biogas from escaping.

[0012] Preferably, the rear side of the clamping plate abuts against the front side of the cover plate, fixing the position of the cover plate by pressure. The front side of the clamping plate is provided with a handwheel, which allows the user to rotate the threaded rod to facilitate the disassembly and assembly of the cover plate.

[0013] Preferably, U-shaped slots are provided on the opposite sides of the two rectangular fixing plates near the left and right sides, and the partition is inserted between the two U-shaped slots arranged vertically opposite each other to ensure that the partition is installed vertically and in a fixed position.

[0014] Preferably, the two partitions are provided with perforated rubber pads on opposite sides to allow biogas to pass through while reducing gas leakage. The opposite sides of the two rubber pads are tightly fitted to the left and right sides of the rectangular box to prevent biogas from bypassing the desulfurizing agent and escaping directly.

[0015] Preferably, the front side of the rectangular box has two symmetrically arranged handle grooves, which facilitate the user to pull the rectangular box forward to remove it from the hydrogen sulfide removal chamber for replacement of the desulfurizing agent. The upper and lower sides of the rectangular box are tightly fitted to the opposite sides of the two rectangular fixing plates, the rear side of the rectangular box abuts against the rear side of the inner wall of the hydrogen sulfide removal chamber, and the front side of the rectangular box abuts against the rear side of the sealing rear plate, thus limiting the displacement of the box and maintaining stability.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The hydrogen sulfide removal equipment for kitchen waste anaerobic biogas features an operating port and a detachable rectangular box design, allowing workers to directly pull out the box from the front of the equipment to replace the desulfurizing agent without needing tools to climb, significantly reducing operational difficulty and safety hazards.

[0018] 2. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste uses a multi-seal structure consisting of a pressure plate, a frame-shaped rubber gasket, and a sealing rear plate to ensure a tight fit between the operating port and the hydrogen sulfide removal chamber, effectively preventing biogas leakage and ensuring a safe operating environment.

[0019] 3. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste features a rectangular box with a convenient handle groove design, enabling quick assembly and disassembly of the rectangular box, significantly reducing maintenance time and improving equipment operating efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the rectangular fixing plate and the partition in this utility model;

[0024] Figure 5 This is a schematic diagram of the rectangular box structure in this utility model;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the cover plate and the threaded rod in this utility model;

[0026] In the diagram: 1. Hydrogen sulfide removal box; 10. Biogas input pipe; 11. Biogas output pipe; 12. Operating port; 13. Positioning rod; 130. Threaded groove; 14. Positioning protrusion; 2. Rectangular fixing plate; 20. U-shaped slot; 3. Partition plate; 30. Rectangular air passage hole; 4. Rectangular box body; 40. Breathable mesh plate; 41. Positioning longitudinal pipe; 42. Handle groove; 5. Cover plate; 50. Sealing back plate; 51. Round hole; 52. Frame-shaped rubber pad; 53. Positioning hole; 6. Threaded rod; 60. Pressure plate; 61. Handwheel; 7. Rubber pad. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please see Figures 1-6 This utility model provides a technical solution:

[0030] The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste includes a hydrogen sulfide removal chamber 1, which provides a closed processing space and accommodates other components. A biogas inlet pipe 10 is provided on the left side of the hydrogen sulfide removal chamber 1 for introducing biogas containing hydrogen sulfide. A biogas outlet pipe 11 is provided on the right side of the hydrogen sulfide removal chamber 1 for discharging the purified biogas after desulfurization. An operation port 12 is provided on the front side of the hydrogen sulfide removal chamber 1 for maintenance and desulfurizing agent replacement. A cover plate 5 is provided on the front side of the hydrogen sulfide removal chamber 1 to seal the operation port 12 and ensure the equipment is airtight.

[0031] A round hole 51 is provided in the middle of the front side of the cover plate 5 as an installation channel for the threaded rod 6. The round hole 51 is connected to the threaded rod 6 for adjusting the position of the clamping plate 60. The front end of the threaded rod 6 is provided with the clamping plate 60 to clamp the cover plate 5 to enhance the seal.

[0032] Rectangular fixing plates 2 are provided on the upper and lower sides of the inner wall of the hydrogen sulfide removal chamber 1, supporting the partition plates 3 and the rectangular box body 4. Partition plates 3 are provided between the two rectangular fixing plates 2 and near the left and right sides to separate the biogas flow path and guide gas distribution. Rectangular air passage holes 30 are opened on the sides of the partition plates 3 to allow biogas to pass evenly through the desulfurizing agent area. A rectangular box body 4 is provided between the two partition plates 3, and granular desulfurizing agent is placed inside the rectangular box body 4 for adsorption or reaction removal of hydrogen sulfide. Breathable mesh plates 40 are provided through the left and right sides of the rectangular box body 4 to ensure biogas enters... The desulfurizing agent is placed inside the rectangular box 4. A positioning longitudinal tube 41 is provided between the front and rear sides of the inner wall of the rectangular box 4 and located in the middle. An auxiliary positioning rod 13 passes through the tube to achieve accurate positioning of the box 4. Both the front and rear ends of the positioning longitudinal tube 41 penetrate the inner wall of the rectangular box 4. A positioning rod 13 is provided in the middle of the rear side of the inner wall of the hydrogen sulfide removal box 1. The positioning rod 13 passes through the positioning longitudinal tube 41. A threaded groove 130 is provided at the front end of the positioning rod 13 for threaded connection of the threaded rod 6, so as to realize the linkage and fixation of the threaded rod 6 and the positioning rod 13, thereby fixing the position of the cover plate 5.

[0033] In this embodiment, the front side of the hydrogen sulfide removal box 1 is provided with four positioning protrusions 14 arranged in a matrix, and the rear side of the cover plate 5 and the position near the four corners are provided with positioning holes 53. The four positioning protrusions 14 are respectively inserted into the four positioning holes 53 to assist the cover plate 5 in quick positioning.

[0034] Specifically, a sealing back plate 50 is provided on the rear side of the cover plate 5, and a frame-shaped rubber pad 52 is provided on the outer side of the sealing back plate 50. The outer side of the frame-shaped rubber pad 52 is tightly fitted with the inner wall of the operating port 12 to enhance the sealing performance of the operating port 12 and prevent biogas from escaping.

[0035] Furthermore, the rear side of the clamping plate 60 abuts against the front side of the cover plate 5, fixing the position of the cover plate 5 by pressure. The front side of the clamping plate 60 is provided with a handwheel 61, which makes it easy for the user to rotate the threaded rod 6 to facilitate the disassembly and assembly of the cover plate 5.

[0036] Furthermore, U-shaped slots 20 are provided on the opposite sides of the two rectangular fixing plates 2, near the left and right sides. The partition 3 is inserted between the two U-shaped slots 20 that are arranged opposite each other, ensuring that the partition 3 is installed vertically and in a fixed position.

[0037] Furthermore, the two partitions 3 are provided with perforated rubber pads 7 on their opposite sides, which allow biogas to pass through while reducing gas leakage. The opposite sides of the two rubber pads 7 are tightly fitted to the left and right sides of the rectangular box 4 to prevent biogas from bypassing the desulfurizing agent and escaping directly.

[0038] Furthermore, two symmetrically arranged handle grooves 42 are provided on the front side of the rectangular box 4, which facilitates the user to pull the rectangular box 4 forward to remove it from the hydrogen sulfide removal chamber 1 for replacement of the desulfurizing agent. The upper and lower sides of the rectangular box 4 are tightly fitted with the opposite sides of the two rectangular fixing plates 2, the rear side of the rectangular box 4 abuts against the rear side of the inner wall of the hydrogen sulfide removal chamber 1, and the front side of the rectangular box 4 abuts against the rear side of the sealing rear plate 50, thus limiting the displacement of the box 4 and maintaining its stability.

[0039] In this embodiment, the hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste is used as follows: First, the biogas containing hydrogen sulfide is introduced into the hydrogen sulfide removal chamber 1 through the biogas inlet pipe 10. The biogas is evenly distributed in the chamber 1 along the rectangular air passages 30 of the partition 3 to the area between the two partitions 3. Then, the biogas enters the interior of the rectangular chamber 4 through the permeable mesh plates 40 on both sides, making full contact with the granular desulfurizing agent filled inside the rectangular chamber 4. The desulfurizing agent adsorbs or chemically reacts to remove the hydrogen sulfide from the biogas. The purified biogas is then discharged through the biogas outlet pipe 11. When the desulfurizing agent needs to be replaced, the handwheel 61 is turned to rotate the threaded rod 6, causing the clamping plate 60 to move forward and loosen the cover plate 5. Then, the gas is discharged through the biogas outlet pipe 11. Pull the cover plate 5 forward to detach it from the hydrogen sulfide removal chamber 1. At this time, the operating port 12 is fully exposed. The operator pulls the rectangular box 4 out of the hydrogen sulfide removal chamber 1 along the guide of the positioning rod 13 and the positioning longitudinal tube 41 through the handle groove 42. After pouring out the old desulfurizing agent in the rectangular box 4 and filling it with new desulfurizing agent, push the rectangular box 4 back into the hydrogen sulfide removal chamber 1. Then, align the positioning hole 53 on the rear side of the cover plate 5 with the positioning protrusion 14 and insert it. Turn the handwheel 61 in the opposite direction to make the clamping plate 60 press the cover plate 5 tightly. The frame-shaped rubber gasket 52 is in close contact with the inner wall of the operating port 12 to form a seal. The rubber gasket 7 is in contact with the side of the rectangular box 4 to prevent gas leakage. After the desulfurizing agent replacement is completed, the equipment can continue to operate.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrogen sulfide removal device for anaerobic biogas from kitchen waste, comprising a hydrogen sulfide removal chamber (1), characterized in that: The hydrogen sulfide removal chamber (1) has a biogas inlet pipe (10) on the left side and a biogas outlet pipe (11) on the right side. An operation port (12) is provided on the front side of the hydrogen sulfide removal chamber (1). A cover plate (5) for closing the operation port (12) is provided on the front side of the hydrogen sulfide removal chamber (1). A round hole (51) is provided in the middle of the front side of the cover plate (5). A threaded rod (6) is connected to the round hole (51). A clamping plate (60) is provided at the front end of the threaded rod (6). Rectangular fixing plates (2) are provided on both the upper and lower sides of the inner wall of the hydrogen sulfide removal chamber (1). A clamping plate (60) is provided between the two rectangular fixing plates (2) and near the left and right sides. A partition (3) is provided with a rectangular air passage (30) on its side. A rectangular box (4) is provided between the two partitions (3). A breathable mesh plate (40) is provided through both the left and right sides of the rectangular box (4). A positioning longitudinal tube (41) is provided between the front and rear sides of the inner wall of the rectangular box (4) and located in the middle. Both the front and rear ends of the positioning longitudinal tube (41) are provided through the inner wall of the rectangular box (4). A positioning rod (13) is provided in the middle of the rear side of the inner wall of the hydrogen sulfide removal box (1). The positioning rod (13) passes through the positioning longitudinal tube (41). A threaded groove (130) for threaded connection of the threaded rod (6) is provided at the front end of the positioning rod (13).

2. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 1, characterized in that: The front side of the hydrogen sulfide removal box (1) is provided with four positioning protrusions (14) arranged in a matrix. The rear side of the cover plate (5) and near the four corners are provided with positioning holes (53). The four positioning protrusions (14) are respectively inserted into the four positioning holes (53).

3. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 1, characterized in that: The cover plate (5) has a sealing back plate (50) on its rear side, and a frame-shaped rubber pad (52) is provided on the outer side of the sealing back plate (50). The outer side of the frame-shaped rubber pad (52) is tightly fitted to the inner wall of the operating port (12).

4. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 1, characterized in that: The rear side of the clamping plate (60) abuts against the front side of the cover plate (5), and a handwheel (61) is provided on the front side of the clamping plate (60).

5. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 1, characterized in that: U-shaped slots (20) are provided on the opposite sides of the two rectangular fixing plates (2) and near the left and right sides. The partition plate (3) is inserted between the two U-shaped slots (20) that are arranged opposite each other.

6. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 1, characterized in that: Both partitions (3) have perforated rubber pads (7) on their opposite sides, and the opposite sides of the two rubber pads (7) are tightly fitted to the left and right sides of the rectangular box (4).

7. The hydrogen sulfide removal equipment for anaerobic biogas from kitchen waste according to claim 3, characterized in that: The front side of the rectangular box (4) has two handle grooves (42) arranged symmetrically on the left and right. The upper and lower sides of the rectangular box (4) are closely fitted with the opposite sides of the two rectangular fixing plates (2). The rear side of the rectangular box (4) abuts against the rear side of the inner wall of the hydrogen sulfide removal box (1). The front side of the rectangular box (4) abuts against the rear side of the sealing back plate (50).

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