Solar photovoltaic photo-thermal-based methane tank fermentation equipment with constant temperature in four seasons

Abstract

The utility model relates to four-season constant-temperature methane tank fermentation equipment based on solar photovoltaic photo-thermal, which belongs to the technical field of methane constant-temperature fermentation and comprises a heat storage water tank, a methane fermentation system and a solar photovoltaic photo-thermal system. The input end of the biogas fermentation system is respectively communicated with the output end of the heat storage water tank and the seasoning pool, the output end of the biogas fermentation system is respectively communicated with the gas storage device and the biogas slurry treatment system, the biogas fermentation system comprises a fermentation pool, and a plurality of groups of honeycomb-shaped biogas tank assemblies are arranged in the fermentation pool; four-season constant temperature of the fermentation tank is achieved through water temperature control, the problem that the temperature in a biogas digester fermentation system is difficult to control is solved, the problem that the energy utilization rate is low is solved through the solar photovoltaic photo-thermal system, then the system is in a constant-temperature state, and the influence of temperature change caused by seasonal change on system work is reduced; and the energy utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to a biogas tank fermentation device with four-season constant temperature based on solar photovoltaic and thermal energy, belonging to the technical field of biogas constant temperature fermentation. Background Art

[0002] With the popularization of rural biogas digesters and the increasing demand for energy utilization, biogas digester fermentation has become the mainstream of rural energy utilization. In view of the problems of unstable and difficult to control temperature and low energy utilization rate of the current biogas digester fermentation system, using solar photovoltaic thermal technology to control the fermentation temperature of the biogas digester is one of the main directions to solve the problems of biogas digester fermentation.

[0003] As the most typical clean energy, solar energy has abundant reserves, wide application range and low price, making the research of solar power generation and heating technology one of the main directions of new energy utilization in my country. PV / T module is a device that combines solar PV module with collector. It not only makes efficient use of solar energy, but also the PV / T system reduces the temperature of PV module and improves the photoelectric conversion efficiency. Solar photovoltaic thermal technology also solves the problem of low temperature and insufficient gas output in winter. Therefore, it is very important to develop a four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic thermal energy. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned prior art, the utility model provides a biogas digester fermentation device with four-season constant temperature based on solar photovoltaic and thermal energy.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A four-season constant-temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy comprises a heat storage tank, a biogas fermentation system and a solar photovoltaic and thermal energy system. The solar photovoltaic and thermal energy system is used to provide electrical energy and thermal energy. The input end of the biogas fermentation system is respectively connected to the output end of the heat storage tank and a seasoning tank, and the output end of the biogas fermentation system is respectively connected to a gas storage device and a biogas liquid treatment system. The biogas fermentation system comprises a fermentation tank, and a plurality of groups of honeycomb-shaped biogas tank assemblies are arranged in the fermentation tank.

[0007] Furthermore, a feed hole and a temperature and pressure monitor are provided on the top of the biogas tank assembly, a heating pipe B is provided on the inner wall, an agitator A is provided in the inner center, a discharge hole is provided at the bottom, and the water inlet hole of the heating pipe B is located at the top of the biogas tank assembly.

[0008] Furthermore, the gas storage device comprises a water seal tank connected to the output end of the fermentation tank, a gas storage cover is arranged on the water seal tank, a water-gas separator is arranged at the output end of the gas storage cover, and the water-gas separator transports biogas through a compressor.

[0009] Furthermore, a flame arrester is provided between the gas storage hood and the water-gas separator.

[0010] Furthermore, the water seal tank is connected to the output end of the fermentation tank through a biogas pipe.

[0011] Furthermore, the biogas slurry treatment system comprises a sedimentation tank connected to the output end of the fermentation tank, a solid-liquid separator is provided at the output end of the sedimentation tank, a biogas slurry recovery pipeline is provided on the solid-liquid separator, and the biogas slurry recovery pipeline is connected to the seasoning tank.

[0012] Furthermore, a slurry adjusting tank is provided between the biogas slurry recovery pipeline and the conditioning tank, a material hole is provided on the slurry adjusting tank, and a stirrer B is provided on the conditioning tank.

[0013] Furthermore, a heating pipe A and a heat-insulating material are provided on the inner wall of the fermentation tank. The heating pipe A is spirally wound along the inner wall of the fermentation tank and is located between the fermentation tank and the heat-insulating material.

[0014] Furthermore, the solar photovoltaic thermal system includes several groups of solar panels, on which a solar panel controller, a battery and an inverter are provided.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The present invention adopts a solar photovoltaic thermal system, which fully utilizes low-grade energy through PV / T components, saves high-grade fossil energy, and improves resource utilization.

[0017] 2. In order to achieve on-demand heating of the biogas fermentation tank, the insulation material uses phase change insulation wall and water temperature control to maintain the constant fermentation temperature of the biogas tank and achieve efficient fermentation of the biogas tank.

[0018] 3. In order to achieve uniform heating inside the biogas fermentation tank and dynamic monitoring of the temperature and pressure of the biogas slurry, the biogas fermentation tank was modularized, and the biogas fermentation was rationally adjusted through data collection, which improved the system operation stability and fermentation efficiency.

[0019] 4. The present invention realizes the four-season constant temperature of the fermentation tank through water temperature control, solves the problem of difficult temperature control in the biogas tank fermentation system, and solves the problem of low energy utilization rate through the solar photovoltaic thermal system, thereby keeping the system in a constant temperature state, reducing the impact of temperature changes caused by seasonal changes on system operation, thereby improving energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a top view of the fermentation tank structure of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the biogas tank assembly in the fermentation tank of the utility model.

[0023] In the figure, 1. solar panel; 2. hot water storage tank; 3. slurry mixing tank; 4. seasoning tank; 5. fermentation tank; 6. heating pipe A; 7. air storage hood; 8. water seal tank; 9. flame arrester; 10. water-gas separator; 11. compressor; 12. sedimentation tank; 13. solid-liquid separator; 14. feed hole; 15. water inlet hole; 16. temperature and pressure monitor; 17. insulation material; 18. heating pipe B; 19. agitator A; 20. discharge hole; 21. agitator B; 22. material hole; 23. water pump A; 24. electric wire; 25. biogas pipe; 26. solar panel controller; 27. battery; 28. inverter; 29. ​​water pump B; 30. water pump C; 31. water pump D. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1-Figure 3 As shown, a four-season constant-temperature biogas digester fermentation equipment based on solar photovoltaic thermal energy includes a heat storage tank 2, a biogas fermentation system and a solar photovoltaic thermal system. The solar photovoltaic thermal system is used to provide electrical energy and thermal energy. The input end of the biogas fermentation system is respectively connected to the output end of the heat storage tank 2 and the seasoning tank 4, and the output end of the biogas fermentation system is respectively connected to the gas storage device and the biogas liquid treatment system. The biogas fermentation system includes a fermentation tank 5, and a plurality of groups of honeycomb-shaped biogas tank assemblies are arranged in the fermentation tank 5.

[0026] The biogas tank assembly is provided with a feed hole 14 and a temperature and pressure monitor 16 at the top, a heating pipe B 18 on the inner wall, an agitator A 19 at the inner center, and a discharge hole 20 at the bottom. The water inlet 15 of the heating pipe B 18 is located at the top of the biogas tank assembly.

[0027] The gas storage device comprises a water seal pool 8 connected to the output end of the fermentation pool 5 , a gas storage cover 7 is arranged on the water seal pool 8 , and a water-gas separator 10 is arranged at the output end of the gas storage cover 7 , and the water-gas separator 10 transports biogas through a compressor 11 .

[0028] A flame arrester 9 is provided between the gas storage hood 7 and the water-gas separator 10 .

[0029] The water seal tank 8 is connected to the output end of the fermentation tank 5 through a biogas pipe 25 .

[0030] The biogas slurry treatment system comprises a sedimentation tank 12 connected to the output end of the fermentation tank 5 , a solid-liquid separator 13 is provided at the output end of the sedimentation tank 12 , a biogas slurry recovery pipeline is provided on the solid-liquid separator 13 , and the biogas slurry recovery pipeline is connected to the seasoning tank 4 .

[0031] A slurry conditioning tank 3 is provided between the biogas slurry recovery pipeline and the conditioning tank 4 , a material hole 22 is provided on the slurry conditioning tank 3 , and a stirrer 21 is provided on the conditioning tank 4 .

[0032] The inner wall of the fermentation tank 5 is provided with a heating pipe A 6 and a heat-insulating material 17 . The heating pipe A 6 is spirally wound along the inner wall of the fermentation tank 5 and is located between the fermentation tank 5 and the heat-insulating material 17 .

[0033] The solar photovoltaic thermal system comprises a plurality of solar panels 1 , on which a solar panel controller 26 , a battery 27 and an inverter 28 are provided.

[0034] The PV / T components of the solar photovoltaic and thermal system are connected to the hot water storage tank 2 and the electrical appliances required in each pipeline, converting light energy into heat energy and storing it in the hot water storage tank 2 through the medium water. The solar photovoltaic power generation is used for water pump A 23, water pump B 29, water pump C 30, water pump D 31, compressor 11, water-gas separator 10, flame arrester 9, solid-liquid separator 13, agitator A 19, agitator B 21 and users to provide electricity; the solar panel 1 is connected to the hot water storage tank 2 through water pump B 29, and the hot water storage tank 2 transports hot water to the heating pipe A 6 and heating pipe B 18 of the fermentation tank 5 through water pump A 23. The solar panel 1 is connected to the agitator B 21 or the electrical appliances required in each pipeline through the wire 24, the seasoning tank 4 is connected to the fermentation tank 5 through water pump C 30, and the fermentation tank 5 is connected to the sedimentation tank 12 through water pump D 31. The heat storage tank 2 is connected to the fermentation tank 5 to form a circulation, and the heating pipe A 6 runs through the fermentation tank 5 in a spiral winding shape, and the four-season constant temperature of the fermentation tank 5 is achieved by water temperature control; the slurry mixing tank 3 is used to adjust the microorganisms and pH value of the material to a suitable level and then send it to the seasoning tank 4 connected thereto. The seasoning tank 4 is equipped with a stirrer A 19 to achieve sufficient mixing of the microorganisms and the material for more efficient fermentation.

[0035] The fermentation tank 5 is composed of a honeycomb-shaped biogas tank assembly, modular fermentation processing, including a conveying pipeline, a temperature and pressure monitor 16, a biogas slurry inlet and a biogas slurry outlet, and is surrounded by a phase change insulation wall on the outside. The phase change insulation wall can store solar energy for use when needed, which can effectively solve the contradiction between the imbalance between heat supply and demand; the structure is more conducive to achieving a constant fermentation temperature; the fermentation raw material inlet and the biogas outlet are arranged at the top of the biogas tank assembly; the biogas slurry outlet is arranged at the bottom of the biogas tank assembly; the fermentation tank 5, as a biogas slurry treatment system, passes the fermented raw materials through the sedimentation tank 12, and separates the biogas residue and the biogas slurry after fermentation treatment through the solid-liquid separator 13. The biogas residue is returned to the field, and the biogas slurry is recovered to the pulping tank 3 for reuse; the biogas generated by the fermentation in the fermentation tank 5 is transported to the gas storage device, which is composed of a gas storage hood 7 and a water seal tank 8, and is connected to a flame arrester 9; the biogas utilization system will first dry the biogas by a water-gas separator 10, and then transport it to the user by a compressor 11.

[0036] The present invention adopts a solar photovoltaic and thermal system, which fully utilizes low-grade energy through PV / T components, saves high-grade fossil energy, and improves resource utilization.

[0037] In order to achieve on-demand heating of the biogas fermentation tank 5, the insulation material 17 uses a phase change insulation wall and water temperature control to maintain a constant fermentation temperature of the biogas tank, thereby achieving efficient fermentation of the biogas tank.

[0038] In order to achieve uniform heating inside the biogas fermentation tank and dynamic monitoring of the temperature and pressure of the biogas slurry, the biogas fermentation tank was modularized, and the biogas fermentation was rationally adjusted through data collection, which improved the system operation stability and fermentation efficiency.

[0039] The present invention realizes the four-season constant temperature of the fermentation tank 5 by water temperature control, solves the problem of difficult temperature control in the biogas tank fermentation system, solves the problem of low energy utilization rate by the solar photovoltaic thermal system, and thus keeps the system in a constant temperature state, reduces the influence of temperature changes caused by seasonal changes on the system operation, and thus improves energy utilization rate.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A four-season constant-temperature biogas digester fermentation device based on solar photovoltaic and thermal energy, comprising a heat storage tank (2), a biogas fermentation system and a solar photovoltaic and thermal energy system, wherein the solar photovoltaic and thermal energy system is used to provide electrical energy and thermal energy, and is characterized in that: The biogas fermentation system input end is respectively connected to the heat storage tank (2) output end and the seasoning tank (4), and the biogas fermentation system output end is respectively connected to the gas storage device and the biogas liquid treatment system. The biogas fermentation system comprises a fermentation tank (5), and a plurality of groups of honeycomb-shaped biogas tank assemblies are arranged in the fermentation tank (5).

2. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 1 is characterized in that: The biogas tank assembly is provided with a feed hole (14) and a temperature and pressure monitor (16) at the top, a heating pipe B (18) is provided on the inner wall, an agitator A (19) is provided at the inner center, and a discharge hole (20) is provided at the bottom. The water inlet hole (15) of the heating pipe B (18) is located at the top of the biogas tank assembly.

3. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 1 is characterized in that: The gas storage device comprises a water seal tank (8) connected to the output end of the fermentation tank (5), a gas storage cover (7) is provided on the water seal tank (8), and a water-gas separator (10) is provided at the output end of the gas storage cover (7), and the water-gas separator (10) transports biogas through a compressor (11).

4. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 3 is characterized by: A flame arrester (9) is provided between the gas storage hood (7) and the water-gas separator (10).

5. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 3 is characterized by: The water seal tank (8) is connected to the output end of the fermentation tank (5) via a biogas pipe (25).

6. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 1, characterized in that: The biogas slurry treatment system comprises a sedimentation tank (12) connected to an output end of a fermentation tank (5); a solid-liquid separator (13) is provided at the output end of the sedimentation tank (12); a biogas slurry recovery pipeline is provided on the solid-liquid separator (13); and the biogas slurry recovery pipeline is connected to a seasoning tank (4).

7. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 6 is characterized by: A slurry conditioning tank (3) is provided between the biogas slurry recovery pipeline and the conditioning tank (4), a material hole (22) is provided on the slurry conditioning tank (3), and a stirrer B (21) is provided on the conditioning tank (4).

8. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 1 is characterized in that: The inner wall of the fermentation tank (5) is provided with a heating pipe A (6) and a heat-insulating material (17). The heating pipe A (6) is spirally wound along the inner wall of the fermentation tank (5) and is located between the fermentation tank (5) and the heat-insulating material (17).

9. The four-season constant temperature biogas digester fermentation equipment based on solar photovoltaic and thermal energy according to claim 1, characterized in that: The solar photovoltaic thermal system comprises a plurality of groups of solar panels (1), wherein the solar panels (1) are provided with a solar panel controller (26), a storage battery (27) and an inverter (28).

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