Biogas biological desulfurization device

Abstract

The utility model relates to the technical field of biogas biological desulfurization devices, and provides a biogas biological desulfurization device which comprises a desulfurization cylinder and a biological water storage cylinder, a first return pipe is fixedly connected between the biological water storage cylinder and the desulfurization cylinder, and two ends of the first return pipe are respectively communicated with the inside of the biological water storage cylinder and the inside of the desulfurization cylinder. The water inlet pipe extends from the side wall of the first return pipe to the interior of the first return pipe and extends into the desulfurization cylinder along the first return pipe, the water inlet pipe is communicated with the interior of the desulfurization cylinder, the diameter of the water inlet pipe is smaller than that of the first return pipe, and the end, located in the desulfurization pipe, of the water inlet pipe is rotationally connected with a sprayer; a gas inlet structure is arranged at the bottom of the desulfurization cylinder. According to the technical scheme, the problem that in the prior art, biogas is discharged from the upper part to the bottom of a biogas box body, so that the biogas cannot be completely desulfurized and is discharged out of a desulfurization box is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas biological desulfurization devices, and in particular to a biogas biological desulfurization device. Background Art

[0002] As a renewable energy source, biogas holds broad potential for application in the energy sector. However, biogas often contains sulfides, such as hydrogen sulfide. High concentrations of these compounds not only affect the odor and combustion performance of the biogas but also pose a threat to the environment and human health. Consequently, biogas biodesulfurization technology has emerged to effectively remove sulfides from biogas, enhancing its utility and environmental friendliness.

[0003] The prior art discloses a biogas biological desulfurization device, comprising a base and a desulfurization box detachably mounted on the top of the base, the interior of the desulfurization box is filled with a mixed liquid, a box cover is matched with the top of the base, a biogas pipe is connected and mounted at the center of the box cover, an exhaust hole is provided on the top surface of the box cover located on one side of the biogas pipe, a slewing bearing is fixedly connected to the bottom end of the inner part of the desulfurization box, a turntable is fixedly mounted on the top of the slewing bearing, a water pump is detachably mounted at the top center of the turntable, a plurality of water spray pipes are inserted around the water pump, the water spray pipes are in a "J"-shaped structure, one end of the water spray pipe passes through the turntable and is connected to the water outlet port of the water pump, and water holes are provided on both sides of the other end, and a driving device for driving the turntable to rotate is fixedly connected to the bottom of the base.

[0004] The existing technology sets a biogas pipe on the box cover and injects biogas into the desulfurization box by discharging biogas downwards. However, biogas is a mixed gas composed of methane and other gases, and its density is less than that of air. Therefore, when it is injected into the desulfurization box, it will float directly. There is a water pump below the biogas pipe, and the distance the biogas pipe extends downward is limited, resulting in a close distance between the injected biogas and the exhaust hole, which may cause the biogas to be discharged from the desulfurization box without being completely desulfurized. Utility Model Content

[0005] The utility model proposes a biogas biological desulfurization device, which fully desulfurizes the biogas, and the biological water in the desulfurization cylinder automatically flows back to the biological water storage cylinder, solving the problem in the related art that the biogas box body is discharged from the top to the bottom, which may cause the biogas to be discharged from the desulfurization box without being completely desulfurized.

[0006] The technical solution of the utility model is as follows:

[0007] The biogas biological desulfurization device includes a desulfurization cylinder, a biological water storage cylinder, and a first cylinder cover. The first cylinder cover is connected to the desulfurization cylinder and is provided with an air outlet pipe. The air outlet pipe is communicated with the interior of the desulfurization cylinder. The biological water storage cylinder is provided with a water pump. The water pump includes an outlet pipe and an inlet pipe. The inlet pipe extends into the interior of the biological water storage cylinder and is communicated with the interior of the biological water storage cylinder. The biological water storage cylinder is located directly below the desulfurization cylinder. A first return pipe is fixedly connected between the biological water storage cylinder and the desulfurization cylinder. The first return pipe The two ends are respectively connected to the interior of the biological water storage cylinder and the interior of the desulfurization cylinder. The first return pipe is located at the center of the bottom of the desulfurization pipe. The water inlet pipe extends from the side wall of the first return pipe to the interior of the first return pipe and extends along the first return pipe to the interior of the desulfurization cylinder. The water inlet pipe is connected to the interior of the desulfurization cylinder. The diameter of the water inlet pipe is smaller than the diameter of the first return pipe. One end of the water inlet pipe located inside the desulfurization pipe is rotatably connected to a sprinkler that can rotate using water flow. The bottom of the desulfurization cylinder is provided with an air intake structure for injecting biogas into the interior of the desulfurization cylinder.

[0008] Furthermore, the sprayer includes two rotating rods, which are perpendicular to the water inlet pipe. The rotating rods extend from the sprayer to the inner wall of the desulfurization cylinder. The two rotating rods extend in opposite directions. Several first water outlets are provided on the side of the rotating rod. The first water outlets face the inner wall of the desulfurization cylinder. The first water outlets of the two rotating rods are in opposite positions.

[0009] Furthermore, a nozzle is fixedly connected to the top of the sprinkler, the nozzle is communicated with the sprinkler, and a plurality of second water outlets are provided on the top of the nozzle.

[0010] Furthermore, an annular groove is provided on the side of one end of the water inlet pipe located inside the desulfurization cylinder, and an annular protrusion is provided on the inner wall of the end of the sprinkler connected to the water inlet pipe. The annular protrusion is embedded in the annular groove and is rotatably connected to the annular groove.

[0011] Furthermore, the air intake structure includes an annular tube, which is located between the desulfurization cylinder and the biological water storage cylinder. Several second air intake pipes are fixedly connected to the side of the annular tube facing the desulfurization cylinder. The end of the second air intake pipe away from the annular tube is fixedly connected to the bottom of the desulfurization cylinder. The two ends of the second air intake pipe are respectively connected to the annular tube and the inside of the desulfurization cylinder. Several second air intake pipes are arranged in a circle along the annular tube. The side of the annular tube is provided with a first air intake pipe for injecting biogas into the annular tube.

[0012] Furthermore, a second return pipe is fixedly connected to the side of the annular pipe facing the biological water storage cylinder, and the end of the second return pipe away from the annular pipe is fixedly connected to the first return pipe. The two ends of the second return pipe are respectively connected to the interior of the annular pipe and the first return pipe.

[0013] The working principle and beneficial effects of the utility model are as follows:

[0014] The utility model arranges the air intake structure for injecting biogas at the bottom of the desulfurization cylinder, so that the biogas floats from the bottom of the desulfurization cylinder to the first cylinder cover at the top of the desulfurization cylinder, thereby increasing its floating distance, thereby increasing the time it stays in the desulfurization cylinder, allowing the biogas to contact the biogas for a longer time, and achieving a better desulfurization effect. The utility model uses a water pump to extract biowater from the biowater storage cylinder and transport it to a sprayer that can rotate using the water flow for discharge. The sprayer sprays the biowater into the cylinder, allowing the biowater to fully contact the biogas and achieve desulfurization. The sprayer rotates under the movement of the water flow, thereby driving the biogas in the desulfurization cylinder to move, increasing the circulation efficiency of the biogas in the desulfurization cylinder, allowing the biogas to contact the biowater more evenly, thereby achieving desulfurization and achieving a better desulfurization effect. The biowater sprayed from the sprayer flows back to the biowater storage cylinder through the first return pipe, realizing the circulation of the biowater. The utility model solves the problem in the related art that the biogas tank body is discharged from the top to the bottom, which may cause the biogas to be discharged from the desulfurization tank without being completely desulfurized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 for Figure 2 Cross-sectional view at AA;

[0019] Figure 4 for Figure 2 Cross-sectional view at BB;

[0020] Figure 5 for Figure 2 Cross-sectional view at CC;

[0021] Figure 6 for Figure 3 Enlarged view of point A.

[0022] In the figure: 1. Desulfurization cylinder; 2. Biological water storage cylinder; 3. First cylinder cover; 4. Annular pipe; 5. Water pump; 6. Sprinkler; 20. First return pipe; 21. Second cylinder cover; 30. Air outlet pipe; 40. First air inlet pipe; 41. Second air inlet pipe; 42. Second return pipe; 50. Water inlet pipe; 51. Water outlet pipe; 60. Nozzle; 61. Rotating rod; 62. Annular protrusion; 63. First water outlet; 510. Annular groove; 600. Second water outlet. DETAILED DESCRIPTION

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

[0024] like Figures 1 to 6 As shown, this embodiment proposes a biogas biological desulfurization device, including a desulfurization cylinder 1, a biological water storage cylinder 2, and a first cylinder cover 3. The first cylinder cover 3 is connected to the desulfurization cylinder 1, and the first cylinder cover 3 is provided with an air outlet pipe 30. The air outlet pipe 30 is communicated with the interior of the desulfurization cylinder 1. A water pump 5 is provided on the biological water storage cylinder 2. The water pump 5 includes a water outlet pipe 51 and a water inlet pipe 50. The water inlet pipe 50 extends to the interior of the biological water storage cylinder 2 and is communicated with the interior of the biological water storage cylinder 2. The biological water storage cylinder 2 is located directly below the desulfurization cylinder 1. A first reflux pipe 20 is fixedly connected between the biological water storage cylinder 2 and the desulfurization cylinder 1. The first reflux pipe 20 is fixedly connected to the desulfurization cylinder 1. The two ends of the flow pipe 20 are respectively connected to the interior of the biological water storage cylinder 2 and the interior of the desulfurization cylinder 1. The first return pipe 20 is located at the center of the bottom of the desulfurization pipe. The water inlet pipe 50 extends from the side wall of the first return pipe 20 to the interior of the first return pipe 20, and extends along the first return pipe 20 to the interior of the desulfurization cylinder 1. The water inlet pipe 50 is connected to the interior of the desulfurization cylinder 1. The diameter of the water inlet pipe 50 is smaller than the diameter of the first return pipe 20. One end of the water inlet pipe 50 located inside the desulfurization pipe is rotatably connected to a sprinkler 6 that can rotate using water flow. An air intake structure for injecting biogas into the interior of the desulfurization cylinder 1 is provided at the bottom of the desulfurization cylinder 1.

[0025] In this embodiment, the connection between the first cylinder cover 3 and the desulfurization cylinder 1 should be a detachable connection, and the first cylinder cover 3 can be embedded in the desulfurization cylinder 1 or connected by a threaded connection. A second cylinder cover 21 should be provided on the top of the biological water storage cylinder 2 for replacing the biological water and cleaning the biological water storage cylinder 2. The water pump 5 can be a vertical centrifugal pump. The vertical centrifugal pump occupies less space and is suitable for use between the biological water storage cylinder 2 and the desulfurization cylinder 1. The vertical centrifugal pump can be more easily installed on the biological water storage cylinder 2. The vertical centrifugal pump draws the biological water from the biological water storage cylinder 2 through the water inlet pipe 50 at the bottom of the pump body and discharges it into the sprinkler 6 through the water outlet pipe 51 at the top of the pump body. The first reflux pipe 20 is used to allow the biological water discharged from the sprinkler 6 to flow back into the biological water storage cylinder 2, realizing the biological water circulation and reducing the use cost. In order to achieve a more efficient biological water circulation, the bottom of the desulfurization cylinder 1 should be a funnel-shaped structure so that the biological water can flow along the bottom to the middle of the bottom, thereby entering the first reflux pipe 20. The water inlet pipe 50 extends from the inside of the first return pipe 20 into the desulfurization cylinder 1 to ensure that the position of the water inlet pipe 50 in the desulfurization cylinder 1 is located at the center of the bottom of the desulfurization cylinder 1, so that a sprayer 6 with a longer rotating rod 61 can be used to achieve better spraying effect and rotation efficiency. The sprayer 6 is used to evenly spray the bio-water into the biogas, so that the bio-water forms a bio-water film. When the biogas passes through the film, the biogas can fully contact the bio-water, promote the bio-water to desulfurize the biogas, and improve the desulfurization efficiency; the rotation of the sprayer 6 can change the position of the bio-water film and drive the circulation of biogas, so that biogas at different positions can contact the bio-water film, thereby improving the desulfurization efficiency. The air intake structure is used to inject biogas into the desulfurization cylinder 1. The air intake structure is set at the bottom of the desulfurization cylinder 1 so that the biogas enters the desulfurization cylinder 1 from the bottom of the desulfurization cylinder 1, increasing the floating distance and time of the biogas in the desulfurization cylinder 1, thereby allowing it to fully contact with the bio-water and improve the desulfurization effect.

[0026] In this embodiment, the sprayer 6 includes two rotating rods 61, which are perpendicular to the water inlet pipe 50. The rotating rods 61 extend from the sprayer 6 to the inner wall of the desulfurization cylinder 1. The two rotating rods 61 extend in opposite directions. Several first water outlets 63 are set on the side of the rotating rod 61. The first water outlets 63 face the inner wall of the desulfurization cylinder 1, and the first water outlets 63 of the two rotating rods 61 are in opposite positions. The self-rotating rod 61 is used to realize the self-rotation of the sprinkler 6. When the biological water is discharged from the first water outlet 63 on the self-rotating rod 61, due to the high water pressure inside the sprinkler 6, the biological water will have a certain backward thrust when it is discharged. The first water outlet 63 is located on the outer wall of the self-rotating rod 61 and faces the inner wall of the desulfurization cylinder 1. The sprinkler 6 is rotatably connected to the water inlet pipe 50. Therefore, when the biological water is discharged, the sprinkler 6 will rotate around the central axis of the water inlet pipe 50. At the same time, the sprinkler 6 is provided with two self-rotating rods 61. The extension directions of the two self-rotating rods 61 are opposite, which can keep the rotation axis of the sprinkler 6 on the water inlet pipe 50. 0 near the central axis, ensuring the stability of the rotation of the sprinkler 6; at the same time, the first water outlets 63 on the two rotating rods 61 are in opposite positions. Looking down at the sprinkler 6 from the desulfurization cylinder 1, one of the first water outlets 63 of the two rotating rods 61 should be upward and the other should be downward. When the two rotating rods 61 discharge water at the same time, the biological water discharged from the two first water outlets 63 pushes the sprinkler 6 to rotate in the same direction. The two first water outlets 63 can increase the rotation speed of the sprinkler 6, thereby increasing the contact area between the biological water and the biogas, thereby improving the desulfurization efficiency and desulfurization effect.

[0027] In this embodiment, a nozzle 60 is fixedly connected to the top of the sprinkler 6 and communicates with the sprinkler 6. Several second water outlets 600 are provided on the top of the nozzle 60. The nozzle 60 is used to increase the contact area and contact time between the biogas and the biogas. The nozzle 60 should be located on the rotating axis of the sprinkler 6 to ensure that the range of the biogas sprayed by the nozzle 60 is fixed during the rotation of the sprinkler 6. The second water outlets 600 should be arranged in a circle around the nozzle 60 and inclined toward the inner wall of the desulfurization cylinder 1. This makes the biogas sprayed by the nozzle 60 appear as a water splash, thereby increasing the coverage area of the biogas. The overall cross-section of the sprinkler 6 equipped with the nozzle 60 should have a cross-shaped structure.

[0028] In this embodiment, an annular groove 510 is provided on the side surface of one end of the water inlet pipe 50 located inside the desulfurization cylinder 1, and an annular protrusion 62 is provided on the inner wall of the end of the sprinkler 6 connected to the water inlet pipe 50. The annular protrusion 62 is embedded in the annular groove 510 and is rotatably connected to the annular groove 510. The annular protrusion 62 and the annular groove 510 cooperate to realize the rotational connection between the water inlet pipe 50 and the sprinkler 6. The annular protrusion 62 and the annular groove 510 not only ensure the rotational connection between the water inlet pipe 50 and the sprinkler 6, but also prevent biological water from flowing out of the connection between the water inlet pipe 50 and the sprinkler 6, thereby ensuring the stability of the water pressure inside the sprinkler 6.

[0029] In this embodiment, the air intake structure includes an annular pipe 4, which is located between the desulfurization cylinder 1 and the biological water storage cylinder 2. A plurality of second air intake pipes 41 are fixedly connected to the side of the annular pipe 4 facing the desulfurization cylinder 1. The end of the second air intake pipe 41 away from the annular pipe 4 is fixedly connected to the bottom of the desulfurization cylinder 1. The two ends of the second air intake pipe 41 are respectively connected to the annular pipe 4 and the interior of the desulfurization cylinder 1. The plurality of second air intake pipes 41 are arranged in a circle along the annular pipe 4. The side of the annular pipe 4 is provided with a first air intake pipe 40 for injecting biogas into the annular pipe 4. The annular pipe 4 is used to connect with all the second air intake pipes 41 and transport biogas to all the second air intake pipes 41. Biogas enters the annular pipe 4 from the first air intake pipe 40. The second air intake pipe 41 is used to allow biogas to enter the interior of the desulfurization cylinder 1 from the annular pipe 4. Providing multiple second air intake pipes 41 can increase the emission of biogas and improve the efficiency of desulfurization. The second air inlet pipes 41 are arranged in a circumferential manner along the annular pipe 4 , which can make the second air inlet pipes 41 more beautiful as a whole and enable biogas to pass through the second air inlet pipes 41 more smoothly.

[0030] In this embodiment, a second return pipe 42 is fixedly connected to the side of the annular pipe 4 facing the biological water storage cylinder 2. The end of the second return pipe 42 away from the annular pipe 4 is fixedly connected to the first return pipe 20. The two ends of the second return pipe 42 are respectively connected to the interior of the annular pipe 4 and the first return pipe 20. Since the second air inlet pipe 41 is arranged at the bottom, the biological water sprayed into the desulfurization cylinder 1 will inevitably enter the annular pipe 4 through the second air inlet pipe 41. The biological water entering the annular pipe 4 can desulfurize the biogas. The provision of the second return pipe 42 allows the biological water in the annular pipe 4 to flow back into the biological water storage cylinder 2, thereby preventing waste of biological water.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A biogas biological desulfurization device, comprising a desulfurization cylinder (1), a biological water storage cylinder (2), and a first cylinder cover (3), wherein the first cylinder cover (3) is connected to the desulfurization cylinder (1), the first cylinder cover (3) is provided with an air outlet pipe (30), the air outlet pipe (30) is communicated with the interior of the desulfurization cylinder (1), the biological water storage cylinder (2) is provided with a water pump (5), the water pump (5) comprises a water outlet pipe (51) and a water inlet pipe (50), the water inlet pipe (50) extends into the interior of the biological water storage cylinder (2) and is communicated with the interior of the biological water storage cylinder (2), characterized in that: The biological water storage cylinder (2) is located directly below the desulfurization cylinder (1); a first return pipe (20) is fixedly connected between the biological water storage cylinder (2) and the desulfurization cylinder (1); the two ends of the first return pipe (20) are respectively connected to the interior of the biological water storage cylinder (2) and the interior of the desulfurization cylinder (1); the first return pipe (20) is located at the center of the bottom of the desulfurization cylinder; the water inlet pipe (50) extends from the side wall of the first return pipe (20) to the interior of the first return pipe (20) and extends along the first return pipe (20) to the interior of the desulfurization cylinder (1); the water inlet pipe (50) is connected to the interior of the desulfurization cylinder (1); the diameter of the water inlet pipe (50) is smaller than the diameter of the first return pipe (20); one end of the water inlet pipe (50) located inside the desulfurization cylinder is rotatably connected to a sprinkler (6) that can rotate using water flow; the bottom of the desulfurization cylinder (1) is provided with an air intake structure for injecting biogas into the interior of the desulfurization cylinder (1).

2. The biogas biological desulfurization device according to claim 1, characterized in that: The sprayer (6) includes two self-rotating rods (61), the self-rotating rods (61) are perpendicular to the water inlet pipe (50), and the self-rotating rods (61) extend from the sprayer (6) toward the inner wall of the desulfurization cylinder (1). The two self-rotating rods (61) extend in opposite directions. A plurality of first water outlets (63) are provided on the side of the self-rotating rod (61), and the first water outlets (63) face the inner wall of the desulfurization cylinder (1). The first water outlets (63) of the two self-rotating rods (61) are located in opposite positions.

3. The biogas biological desulfurization device according to claim 2, characterized in that: A spray head (60) is fixedly connected to the top of the sprayer (6), the spray head (60) is in communication with the sprayer (6), and a plurality of second water outlets (600) are provided on the top of the spray head (60).

4. The biogas biological desulfurization device according to claim 1, characterized in that: An annular groove (510) is provided on the side surface of one end of the water inlet pipe (50) located inside the desulfurization cylinder (1), and an annular protrusion (62) is provided on the inner wall of the end of the sprinkler (6) connected to the water inlet pipe (50). The annular protrusion (62) is embedded in the annular groove (510), and the annular protrusion (62) is rotatably connected to the annular groove (510).

5. The biogas biological desulfurization device according to claim 1, characterized in that: The air intake structure comprises an annular tube (4), wherein the annular tube (4) is located between the desulfurization cylinder (1) and the biological water storage cylinder (2), and a plurality of second air intake pipes (41) are fixedly connected to the side of the annular tube (4) facing the desulfurization cylinder (1), and the end of the second air intake pipe (41) away from the annular tube (4) is fixedly connected to the bottom of the desulfurization cylinder (1), and the two ends of the second air intake pipe (41) are respectively connected to the annular tube (4) and the inside of the desulfurization cylinder (1), and the plurality of second air intake pipes (41) are arranged in a circular pattern along the annular tube (4), and a first air intake pipe (40) for injecting biogas into the annular tube (4) is provided on the side of the annular tube (4).

6. The biogas biological desulfurization device according to claim 5, characterized in that: A second return pipe (42) is fixedly connected to the side of the annular pipe (4) facing the biological water storage cylinder (2); an end of the second return pipe (42) away from the annular pipe (4) is fixedly connected to the first return pipe (20); and both ends of the second return pipe (42) are respectively in communication with the interior of the annular pipe (4) and the first return pipe (20).

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