Biogas desulfurization filter

Abstract

The utility model belongs to the technical field of biogas treatment, and particularly relates to a biogas desulfurization filter which comprises a treatment cylinder, a gas inlet pipe arranged on the outer side of the bottom of the treatment cylinder and used for enabling biogas to enter, an exhaust pipe arranged on the top of the treatment cylinder, and a sucking pump arranged on the gas inlet pipe. A dewatering assembly, an activated carbon filtering assembly and a desulfurizing agent filtering assembly are sequentially arranged in the treatment barrel from bottom to top, the dewatering assembly comprises a conical water absorption shell arranged on the inner wall of the treatment barrel, the upper portion of the conical water absorption shell is narrow, the lower portion of the conical water absorption shell is wide, and a water absorption layer is arranged on the inner wall of the conical water absorption shell; a connecting pipe communicated with the conical water absorption shell is arranged at the top of the conical water absorption shell, the top of the connecting pipe is of a sealed structure, and the connecting pipe is connected with the activated carbon filtering assembly. The device not only can dehydrate the entering biogas, but also can desulfurize through the combination of the activated carbon and the desulfurizer, so that the treatment effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of biogas treatment technology, specifically relating to a biogas desulfurization filter. Background Technology

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, biogas, as a renewable energy source, has received more and more attention and application. Biogas is usually a mixed gas produced by the fermentation of organic matter under anaerobic conditions. Its main components include methane and carbon dioxide, while also containing a certain amount of water, hydrogen sulfide and other impurities.

[0003] Effective desulfurization is a crucial step in the application of biogas. Hydrogen sulfide in biogas is not only toxic and corrosive, damaging equipment and pipelines and affecting the lifespan and safety of biogas utilization systems, but direct emissions also cause serious environmental pollution.

[0004] Currently, various biogas desulfurization technologies and equipment are available on the market. Common biogas desulfurization devices typically consist of a treatment tank, an inlet, an outlet, and desulfurization components.

[0005] Existing biogas desulfurization devices have some obvious drawbacks in terms of structure and performance. For example, some desulfurization devices use only a single desulfurizing agent, resulting in limited desulfurization effect and difficulty in completely removing sulfur from biogas. This leads to the treated biogas still containing a relatively high amount of sulfur, affecting its quality and environmental performance.

[0006] Secondly, biogas contains a certain amount of moisture before entering the desulfurization tower. If this moisture is not removed in time, it will affect the desulfurizing agent, thereby affecting the separation device and resulting in insufficient desulfurization. The combustion of biogas containing hydrogen sulfide will harm the human body and pollute the environment.

[0007] To address this, we propose a biogas desulfurization filter. This device not only dehydrates the incoming biogas but also desulfurizes it through a combination of activated carbon and a desulfurizer, thereby improving the treatment efficiency. Utility Model Content

[0008] The purpose of this invention is to provide a biogas desulfurization filter. This device can not only dehydrate the incoming biogas, but also desulfurize it by combining activated carbon and a desulfurization machine, thereby improving the treatment effect.

[0009] The specific technical solution adopted in this utility model is as follows:

[0010] A biogas desulfurization filter includes a treatment cylinder, an air inlet pipe for biogas to enter is provided on the outer side of the bottom of the treatment cylinder, an exhaust pipe is provided on the top of the treatment cylinder, an air pump is provided on the air inlet pipe, and a dehydration component, an activated carbon filter component and a desulfurizing agent filter component are arranged sequentially from bottom to top inside the treatment cylinder.

[0011] The dehydration assembly includes a conical water-absorbing shell disposed on the inner wall of the processing cylinder. The conical water-absorbing shell is narrower at the top and wider at the bottom. A water-absorbing layer is disposed on the inner wall of the conical water-absorbing shell, and a connecting pipe communicating with it is disposed at the top of the conical water-absorbing shell. The top of the connecting pipe has a sealed structure, and the connecting pipe is connected to the activated carbon filter assembly.

[0012] Furthermore, the maximum diameter of the conical water-absorbing shell matches the diameter of the treatment cylinder.

[0013] Furthermore, the activated carbon filter assembly includes a first conduit communicating with the connecting pipe, an activated carbon support shell being installed at the end of the first conduit away from the connecting pipe, a second conduit being provided on the top of the activated carbon support shell, and the second conduit being connected to the desulfurizing agent filter assembly.

[0014] Furthermore, the desulfurizing agent filtration assembly includes a desulfurizing agent carrier housing connected to the inner wall of the top of the treatment cylinder. The outer side of the desulfurizing agent carrier housing is connected to the second conduit. A motor is provided at the top of the treatment cylinder. A rotating shaft located inside the desulfurizing agent carrier housing is installed at the output end of the motor. A stirring rod is provided on the outer side of the rotating shaft.

[0015] Furthermore, a drain pipe is provided on the outside of the desulfurizing agent carrier shell, and the end of the drain pipe away from the desulfurizing agent carrier shell extends through the treatment cylinder.

[0016] Furthermore, an anti-corrosion layer is provided on the inner wall of the processing cylinder.

[0017] The technical effects achieved by this utility model are as follows:

[0018] When the air pump is started, it generates a strong suction force, causing the biogas to be treated to quickly flow into the processing cylinder through the inlet pipe. Because the conical absorbent shell is narrower at the top and wider at the bottom, the airflow channel gradually narrows as the biogas rises, increasing its flow velocity. This causes the biogas to impact the inner wall of the conical absorbent shell with greater force, increasing the contact opportunities and intensity between the biogas and the absorbent layer. The absorbent layer is made of high-performance absorbent material, which efficiently absorbs moisture from the biogas, greatly reducing its water content. After dehydration, the biogas smoothly enters the processing cylinder through the connecting pipe. In activated carbon filter components, the rich pore structure and huge specific surface area of ​​activated carbon play a key role, which can strongly adsorb some of the sulfur components and other impurities and odor substances in biogas, thus performing preliminary sulfur treatment and purification of biogas. Subsequently, the biogas that has undergone preliminary treatment continues to rise and enters the desulfurizing agent filter component. The desulfurizing agent in the desulfurizing agent filter component reacts chemically with the sulfur components in the biogas, further converting and removing the remaining sulfur components, thus completing the deep desulfurization treatment of biogas. Finally, the pure biogas after comprehensive and efficient treatment is discharged through the exhaust pipe and can be put into subsequent use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the conical water-absorbing shell of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Processing cylinder; 2. Air inlet pipe; 3. Exhaust pipe; 4. Conical water absorption shell; 5. Connecting pipe; 6. First conduit; 7. Activated carbon support shell; 8. Second conduit; 9. Desulfurizing agent support shell; 10. Motor; 11. Rotating shaft; 12. Stirring rod; 13. Drain pipe. Detailed Implementation

[0025] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1-4As shown, the technical solution adopted in this utility model is as follows: a biogas desulfurization filter includes a treatment cylinder 1, an air inlet pipe 2 for biogas to enter is provided on the outer side of the bottom of the treatment cylinder 1, an exhaust pipe 3 is provided on the top of the treatment cylinder 1, an air pump is provided on the air inlet pipe 2, and a dehydration component, an activated carbon filter component and a desulfurizing agent filter component are arranged sequentially from bottom to top inside the treatment cylinder 1.

[0027] The dehydration assembly includes a conical water-absorbing shell 4 disposed on the inner wall of the treatment cylinder 1. The conical water-absorbing shell 4 is narrower at the top and wider at the bottom. A water-absorbing layer is disposed on the inner wall of the conical water-absorbing shell 4, and a connecting pipe 5 is disposed at the top of the conical water-absorbing shell 4 and communicates with it. The top of the connecting pipe 5 is a sealed structure, and the connecting pipe 5 is connected to the activated carbon filter assembly.

[0028] The maximum diameter of the conical water-absorbing shell 4 is matched with the diameter of the treatment cylinder 1, which ensures its airtightness.

[0029] Furthermore, a water-absorbing block is installed at the connection between the conical water-absorbing shell 4 and the connecting pipe 5. The material of the water-absorbing block is sponge, etc., which can improve the dehydration effect of the circulating biogas.

[0030] Meanwhile, the models of the air pumps range from 900DT to 300DT. These models are typically used in operating conditions with specific flow rates and head, such as desulfurization processes. They cover different flow ranges from large to small and are suitable for desulfurization systems of different sizes.

[0031] The activated carbon filter assembly includes a first conduit 6 connected to the connecting pipe 5. An activated carbon support shell 7 is installed at the end of the first conduit 6 away from the connecting pipe 5. A second conduit 8 is provided on the top of the activated carbon support shell 7. The second conduit 8 is connected to the desulfurizing agent filter assembly.

[0032] The dehydrated biogas enters the activated carbon carrier shell 7 through the first conduit 6. The rich pore structure and huge specific surface area of ​​the activated carbon inside play a key role, which can strongly adsorb some of the sulfur components, as well as other impurities and odor substances in the biogas, thus performing preliminary sulfur treatment and purification of the biogas. Then, it enters the desulfurizing agent filter component through the second conduit 8 for further treatment.

[0033] The desulfurizing agent filtration assembly includes a desulfurizing agent carrier housing 9 connected to the inner wall of the top of the treatment cylinder 1. The outer side of the desulfurizing agent carrier housing 9 is connected to the second conduit 8. A motor 10 is provided at the top of the treatment cylinder 1. A rotating shaft 11 located inside the desulfurizing agent carrier housing 9 is installed at the output end of the motor 10. A stirring rod 12 is provided on the outer side of the rotating shaft 11.

[0034] Biogas enters the desulfurizing agent carrier shell 9 through the second conduit 8, and then the motor 10 drives the rotating shaft 11 to drive the stirring rod 12 to drive the internal desulfurizer to fully react with the biogas, thereby improving the desulfurization effect.

[0035] It should be noted that the exhaust pipe 3 is connected to the desulfurizing agent carrier shell 9, which allows biogas to be discharged.

[0036] A drain pipe 13 is provided on the outside of the desulfurizing agent carrier shell 9, with one end of the drain pipe 13, away from the desulfurizing agent carrier shell 9, extending through the treatment cylinder 1. The drain pipe 13 facilitates the replacement and treatment of the desulfurizer inside the desulfurizing agent carrier shell 9.

[0037] The inner wall of the treatment cylinder 1 is provided with an anti-corrosion layer, which can improve its service life.

[0038] The working principle of this utility model is as follows: When the air pump is started, it generates a strong suction force, causing the biogas to be treated to quickly flow into the processing cylinder 1 through the air inlet pipe 2. Because the conical water-absorbing shell 4 is narrower at the top and wider at the bottom, the airflow channel gradually narrows as the biogas rises, leading to an increased flow rate. This causes the biogas to impact the inner wall of the conical water-absorbing shell 4 with greater impact force, increasing the contact opportunities and intensity between the biogas and the water-absorbing layer. The water-absorbing layer is made of high-performance absorbent material, which can efficiently absorb moisture from the biogas, greatly reducing its water content. After dehydration, the biogas flows through the connecting pipe... 5. The biogas smoothly enters the activated carbon filter assembly. In the activated carbon filter assembly, the rich pore structure and huge specific surface area of ​​the activated carbon play a key role, which can strongly adsorb some of the sulfur components and other impurities and odor substances in the biogas, and perform preliminary sulfur treatment and purification of the biogas. Subsequently, the biogas that has undergone preliminary treatment continues to rise and enters the desulfurizing agent filter assembly. The desulfurizing agent in the desulfurizing agent filter assembly reacts chemically with the sulfur components in the biogas, further converting and removing the remaining sulfur components, completing the deep desulfurization treatment of the biogas. Finally, the pure biogas after comprehensive and efficient treatment is discharged through exhaust pipe 3 and can be put into subsequent use.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A biogas desulfurization filter, comprising a treatment cylinder (1), characterized in that: The bottom outer side of the treatment cylinder (1) is provided with an air inlet pipe (2) for biogas to enter, the top of the treatment cylinder (1) is provided with an exhaust pipe (3), the air inlet pipe (2) is provided with an air pump, and the inside of the treatment cylinder (1) is provided with a dehydration component, an activated carbon filter component and a desulfurizing agent filter component from bottom to top. The dehydration assembly includes a conical water-absorbing shell (4) disposed on the inner wall of the treatment cylinder (1). The conical water-absorbing shell (4) is narrow at the top and wide at the bottom. A water-absorbing layer is disposed on the inner wall of the conical water-absorbing shell (4). A connecting pipe (5) communicating with the top of the conical water-absorbing shell (4) is disposed therewith. The top of the connecting pipe (5) is a sealed structure. The connecting pipe (5) is connected to the activated carbon filter assembly.

2. The biogas desulfurization filter according to claim 1, characterized in that: The maximum diameter of the conical water-absorbing shell (4) matches the diameter of the treatment cylinder (1).

3. A biogas desulfurization filter according to claim 1, characterized in that: The activated carbon filter assembly includes a first conduit (6) communicating with the connecting pipe (5), an activated carbon support shell (7) is installed at the end of the first conduit (6) away from the connecting pipe (5), a second conduit (8) is provided on the top of the activated carbon support shell (7), and the second conduit (8) is connected to the desulfurizing agent filter assembly.

4. A biogas desulfurization filter according to claim 3, characterized in that: The desulfurizing agent filtration assembly includes a desulfurizing agent carrier housing (9) connected to the inner wall of the top of the processing cylinder (1). The outer side of the desulfurizing agent carrier housing (9) is connected to the second conduit (8). A motor (10) is provided on the top of the processing cylinder (1). A rotating shaft (11) located inside the desulfurizing agent carrier housing (9) is installed at the output end of the motor (10). A stirring rod (12) is provided on the outer side of the rotating shaft (11).

5. A biogas desulfurization filter according to claim 4, characterized in that: A drain pipe (13) is provided on the outside of the desulfurizing agent carrier shell (9), and the end of the drain pipe (13) away from the desulfurizing agent carrier shell (9) extends through the treatment cylinder (1).

6. A biogas desulfurization filter according to claim 1, characterized in that: The inner wall of the processing cylinder (1) is provided with an anti-corrosion layer.

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