Biogas desulfurization system based on biological method

Abstract

The biogas desulfurization system comprises a shell, a desulfurization mechanism is arranged in the shell, a gas inlet pipe is fixedly connected in the left side wall of the shell, a sprayer is fixedly connected to the upper surface in the shell, a nutrient solution bin is fixedly connected to the upper surface of the shell, and a gas outlet pipe is fixedly connected to the lower surface of the shell. A water pipe is arranged on the side surface of the nutrient solution bin, the other end of the water pipe of the nutrient solution bin is communicated with the sprayer, an oxygen tank is arranged on the upper surface, away from the nutrient solution bin, of the shell, the oxygen tank is provided with an oxygen pipe communicated with the interior of the shell, the right side surface of the shell is through, and the right side surface of the shell is fixedly connected with a closing plate. An air outlet pipe is arranged in the closing plate and penetrates through the closing plate. According to the structure, the desulfurization mechanism, the oxygen tank, the nutrient solution bin and the sprayer are arranged, so that biogas and a nutrient solution can be fully mixed and reacted, and the biological desulfurization effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of biogas engineering, in particular to a biogas desulfurization system based on a biological method. Background Art

[0002] Biogas is a valuable green energy with great development potential. It is a mixed gas generated by the fermentation of organic matter by microorganisms under anaerobic conditions. Biogas is produced in different environments, such as landfills, sewage sludge and biological waste. Anaerobic fermentation of organic matter can produce biogas. In addition, biogas resources in rural areas are also very rich.

[0003] Biological desulfurization refers to the removal of hydrogen sulfide in biogas through the metabolism of sulfur-oxidizing bacteria. Depending on the amount of oxygen supplied, the desulfurization product is sulfur or sulfate. This method has the advantages of high efficiency, low energy consumption, simple equipment, and no catalyst is required. The existing biogas biological desulfurization technology has the problem that the biogas entering the desulfurization device cannot be fully mixed with the nutrient solution. Summary of the invention

[0004] The utility model provides a biogas desulfurization system based on a biological method, which can fully mix and react the biogas energy and nutrient solution, thereby improving the biological desulfurization effect.

[0005] To achieve the above-mentioned purpose, a biogas desulfurization system based on biological method is provided, including: a shell, a desulfurization mechanism is arranged inside the shell, an air inlet is fixedly connected in the left side wall of the shell, a sprinkler is fixedly connected to the inner upper surface of the shell, a nutrient solution bin is fixedly connected to the upper surface of the shell, a water pipe is arranged on the side surface of the nutrient solution bin, the other end of the water pipe of the nutrient solution bin is connected to the sprinkler, an oxygen tank is arranged on the upper surface of the shell away from the nutrient solution bin, the oxygen tank is provided with an oxygen pipe which is connected to the inside of the shell, the right side surface of the shell is through, a closing plate is fixedly connected to the right side surface of the shell, an air outlet pipe is arranged in the closing plate, and the air outlet pipe passes through the closing plate. The desulfurization mechanism is provided to facilitate the treatment of sulfide gas in biogas, the sprayer is provided to facilitate the spraying of nutrient solution into the culture sponge block below, the nutrient solution tank is provided to facilitate the supply of nutrient solution to the inside of the shell, the oxygen tank is provided to facilitate the input of a certain amount of oxygen into the shell to ensure the normal metabolism of desulfurization bacteria, and the air inlet and outlet pipes are provided to facilitate the inflow of sulfur-containing biogas and the outflow of treated biogas.

[0006] According to the biogas desulfurization system based on biological method, the desulfurization mechanism includes a driven gear, a limit frame, a culture sponge block, a bearing, a reduction motor, a rotating shaft, and a driving gear. The bearing is fixedly connected to the cylindrical surface of the air inlet pipe near the right edge, and the bearing is inside the shell.

[0007] According to the biogas desulfurization system based on biological method, the driven gear is fixedly connected to the outer cylindrical surface of the bearing, and the limit frame is fixedly connected to the right side surface of the driven gear, and there is no hole on the right side surface of the limit frame. The driven gear is provided to facilitate the rotation of the culture sponge block, to prevent the culture solution from accumulating completely under the culture sponge block, so that the culture solution content in various parts of the culture sponge block is in a relatively uniform state, and the limit frame is provided to facilitate the fixing of the position of the culture sponge block.

[0008] According to the biogas desulfurization system based on biological method, the culture sponge block is inside the limit frame, the limit frame is in contact with the right surface of the driven gear, and the culture sponge block is directly below the sprayer. The culture sponge block is provided to facilitate the absorption of nutrient solution and allow desulfurization bacteria to grow therein, thereby treating the sulfur-containing biogas passing into the culture sponge block.

[0009] According to the biogas desulfurization system based on biological method, the reduction motor is fixedly connected to the left side surface inside the shell, the rotating shaft is fixedly connected to the output end of the reduction motor, the driving gear is fixedly connected to the cylindrical surface of the rotating shaft, and the driving gear is meshed with the driven gear. The reduction motor, the rotating shaft and the driving gear are arranged to facilitate the rotation of the driven gear, thereby driving the culture sponge block to rotate.

[0010] According to the biogas desulfurization system based on biological method, the left side surface of the shell is fixedly connected to the heating plate, and the upper surface of the shell is fixedly connected to the fan, and the airflow emitted by the fan blows toward the location of the heating plate. The fan is provided to facilitate the air flow in the shell.

[0011] According to the biogas desulfurization system based on biological method, the upper surface of the shell is fixedly connected to the oxygen content detector, and the upper surface of the shell is fixedly connected to the temperature sensor away from the heating plate. The oxygen content detector and the temperature sensor are provided to facilitate the detection of the oxygen content and temperature in the shell.

[0012] According to the biogas desulfurization system based on biological method, the front surface of the shell is fixedly connected to a display screen, which is provided to facilitate displaying information such as oxygen content and temperature of the air in the shell.

[0013] The beneficial effects of the utility model are as follows: by arranging the desulfurization mechanism, the oxygen tank, the nutrient solution bin and the sprayer, the biogas energy and the nutrient solution can be fully mixed and reacted, thereby improving the biological desulfurization effect.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a biogas desulfurization system based on a biological method of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a shell of a biogas desulfurization system based on a biological method according to the utility model;

[0018] Figure 3 This is a schematic diagram of the desulfurization mechanism structure of a biogas desulfurization system based on a biological method of the utility model;

[0019] Figure 4 This is a schematic cross-sectional structure diagram of the installation position of the culture sponge block of a biogas desulfurization system based on a biological method according to the utility model;

[0020] Figure 5 This is a part diagram of a limit frame of a biogas desulfurization system based on a biological method according to the utility model.

[0021] Legend:

[0022] 1. Shell; 2. Display screen; 3. Air inlet pipe; 4. Oxygen tank; 5. Nutrient solution tank; 6. Closing plate; 7. Air outlet pipe; 8. Desulfurization mechanism; 801. Driven gear; 802. Limit frame; 803. Culture sponge block; 804. Bearing; 805. Speed ​​reducer motor; 806. Rotating shaft; 807. Driving gear; 9. Temperature sensor; 10. Oxygen content detector; 11. Sprinkler; 12. Heating plate; 13. Fan. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figures 1 to 5The utility model embodiment is a biogas desulfurization system based on biological method, which includes a shell 1, a desulfurization mechanism 8 is arranged inside the shell 1, an air inlet pipe 3 is fixedly connected in the left side wall of the shell 1, a sprinkler 11 is fixedly connected to the upper surface of the shell 1, a nutrient solution bin 5 is fixedly connected to the upper surface of the shell 1, a water pipe is arranged on the side surface of the nutrient solution bin 5, and the other end of the water pipe of the nutrient solution bin 5 passes into the sprinkler 11, an oxygen tank 4 is arranged on the upper surface of the shell 1 away from the nutrient solution bin 5, and the oxygen tank 4 is provided with an oxygen pipe passing into the shell 1, the right side surface of the shell 1 is through, a closing plate 6 is fixedly connected to the right side surface of the shell 1, an air outlet pipe 7 is arranged in the closing plate 6, the air outlet pipe 7 passes through the closing plate 6, the oxygen tank 4 and the nutrient solution bin 5 can quantitatively provide oxygen and nutrient solution to the shell 1, untreated biogas will enter the shell 1 from the air inlet pipe 3, and the treated biogas will flow out of the shell 1 from the air outlet pipe 7, and the closing plate 6 is fixed to the shell 1 by screws.

[0025] The upper inner surface of the shell 1 is fixedly connected to the oxygen content detector 10, the upper inner surface of the shell 1 is fixedly connected to the temperature sensor 9 away from the heating plate 12, and the front surface of the shell 1 is fixedly connected to the display screen 2. The data detected by the oxygen content detector 10 and the temperature sensor 9 will be transmitted to the display screen 2 through the data line.

[0026] The desulfurization mechanism 8 includes a driven gear 801, a limit frame 802, a culture sponge block 803, a bearing 804, a reduction motor 805, a rotating shaft 806, and a driving gear 807. The bearing 804 is fixedly connected to the cylindrical surface of the air inlet pipe 3 near the right edge, and the bearing 804 is inside the shell 1.

[0027] The driven gear 801 is fixedly connected to the outer cylindrical surface of the bearing 804, the limit frame 802 is fixedly connected to the right side surface of the driven gear 801, the limit frame 802 has no holes on the right side surface, the culture sponge block 803 is inside the limit frame 802, the limit frame 802 is in contact with the right side surface of the driven gear 801, the culture sponge block 803 is directly below the sprayer 11, the culture sponge block 803 contains nutrient solution, and the desulfurization bacteria exist in the nutrient solution of the culture sponge block 803. The culture sponge block 803 needs to be replaced regularly, and the limit frame 802 is fixed to the driven gear 801 by screws.

[0028] The reduction motor 805 is fixedly connected to the left inner surface of the housing 1 , the rotating shaft 806 is fixedly connected to the output end of the reduction motor 805 , the driving gear 807 is fixedly connected to the cylindrical surface of the rotating shaft 806 , and the driving gear 807 is meshed with the driven gear 801 .

[0029] A heating plate 12 is fixedly connected to the left side surface of the shell 1, and a fan 13 is fixedly connected to the upper surface of the shell 1. The airflow emitted by the fan 13 blows toward the location of the heating plate 12. The heating plate 12 will only work when the temperature inside the shell 1 is lower than the suitable temperature for desulfurization bacteria, and the heat emitted by it will be quickly diffused to the entire shell 1 under the action of the fan 13.

[0030] Working principle: the nutrient solution sprayed from the sprinkler 11 falls on the culture sponge block 803 below, and the culture sponge block 803 rotates at a low speed along with the driven gear 801, which prevents the nutrient solution from accumulating at the bottom of the culture sponge block 803 under the action of gravity, and better ensures that the nutrient solution content in various parts of the culture sponge block 803 is relatively uniform. The untreated biogas flows into the shell 1 from the air inlet pipe 3 and passes into the culture sponge block 803. The biogas inflow direction is blocked by the right side surface of the limit frame 802, and the biogas can only flow out from the side surface of the culture sponge block 803. In this process, the biogas and the nutrient solution in the culture sponge block 803 are in full contact, and the desulfurization bacteria in the nutrient solution in the culture sponge block 803 will process the sulfide gas in the biogas to complete the desulfurization treatment of the biogas.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A biogas desulfurization system based on biological method, characterized in that: include: A shell (1), wherein a desulfurization mechanism (8) is arranged inside the shell (1), an air inlet pipe (3) is fixedly connected to the left side wall of the shell (1), a sprayer (11) is fixedly connected to the inner upper surface of the shell (1), the upper surface of the shell (1) is fixedly connected to a nutrient solution bin (5), a water pipe is arranged on the side surface of the nutrient solution bin (5), and the other end of the water pipe of the nutrient solution bin (5) is connected to the sprayer (11), an oxygen tank (4) is arranged on the upper surface of the shell (1) away from the nutrient solution bin (5), and the oxygen tank (4) is provided with an oxygen pipe connected to the inside of the shell (1), the right side surface of the shell (1) is through, and the right side surface of the shell (1) is fixedly connected to a closing plate (6), and an air outlet pipe (7) is arranged in the closing plate (6), and the air outlet pipe (7) passes through the closing plate (6).

2. A biogas desulfurization system based on biological method according to claim 1, characterized in that: The desulfurization mechanism (8) comprises a driven gear (801), a limit frame (802), a culture sponge block (803), a bearing (804), a reduction motor (805), a rotating shaft (806), and a driving gear (807); the bearing (804) is fixedly connected to the cylindrical surface of the air inlet pipe (3) near the right edge; the bearing (804) is inside the housing (1).

3. A biogas desulfurization system based on biological method according to claim 2, characterized in that: The driven gear (801) is fixedly connected to the outer cylindrical surface of the bearing (804), and the limit frame (802) is fixedly connected to the right side surface of the driven gear (801), and there is no hole on the right side surface of the limit frame (802).

4. A biogas desulfurization system based on biological method according to claim 2, characterized in that: The culture sponge block (803) is inside the limiting frame (802), the limiting frame (802) is in contact with the right side surface of the driven gear (801), and the culture sponge block (803) is directly below the sprayer (11).

5. A biogas desulfurization system based on biological method according to claim 2, characterized in that: The reduction motor (805) is fixedly connected to the left side surface inside the housing (1), the rotating shaft (806) is fixedly connected to the output end of the reduction motor (805), the driving gear (807) is fixedly connected to the cylindrical surface of the rotating shaft (806), and the driving gear (807) is meshed with the driven gear (801).

6. The biogas desulfurization system based on biological method according to claim 1, characterized in that: The left side surface inside the shell (1) is fixedly connected to a heating plate (12), and the upper surface inside the shell (1) is fixedly connected to a fan (13), and the airflow emitted by the fan (13) blows towards the location of the heating plate (12).

7. A biogas desulfurization system based on biological method according to claim 6, characterized in that: The upper inner surface of the shell (1) is fixedly connected to an oxygen content detector (10), and the upper inner surface of the shell (1) is fixedly connected to a temperature sensor (9) away from the heating plate (12).

8. The biogas desulfurization system based on biological method according to claim 1, characterized in that: The front surface of the housing (1) is fixedly connected to the display screen (2).

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