CN210394391U

CN210394391U - Biogas power generation system with heat energy recycling function

Info

Publication number: CN210394391U
Application number: CN201921308212.0U
Authority: CN
Inventors: 袁鑫; 许静
Original assignee: Xi'an Xusheng Regeneration Resource Co ltd
Current assignee: Suzhou Baichang renewable energy Co.,Ltd.
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-04-24
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a heat energy recycling methane power generation system, which relates to the technical field of methane power generation and mainly aims to solve the problem of heat waste generated by the power generation of a generator set; the biogas power generation system comprises a fermentation anaerobic reactor for biogas fermentation, an air storage and outlet pipe for storing fermentation biogas and a power generator, wherein the air storage and outlet pipe is connected with the fermentation anaerobic reactor through an air guide pipe, an air pump is arranged in the middle of the air guide pipe, a heating chamber is arranged at the bottom of the fermentation anaerobic reactor, a heater is arranged in the heating chamber, a waste heat recycling system is arranged between the fermentation anaerobic reactor and the power generator, and the waste heat recycling system comprises a first heat exchanger arranged in the heating chamber, a second heat exchanger arranged in the power generator and a current collector. The utility model discloses simple structure, rational utilization resource when cooling down marsh gas generating set has improved the production of marsh gas, environmental protection and energy saving, and the practicality is stronger.

Description

Biogas power generation system with heat energy recycling function

Technical Field

The utility model relates to a marsh gas power generation technical field specifically is a marsh gas power generation system that heat energy was recycled.

Background

Energy crisis and ecological crisis are huge problems facing the human society at present, and a technology for generating electricity by using natural energy sources appears for solving the problems: such as solar power generation, wind power generators, biomass-to-biogas power generation. Among them, biomass methane-making power generation is a very effective technology for treating organic waste pollution and developing renewable energy. The marsh gas is a mixed gas produced by fermenting, decomposing and converting various organic substances such as human and animal excreta, straws, sewage and the like under anaerobic conditions through microorganisms. Fermentation is a complex biochemical change involving many microorganisms. The reaction is roughly divided into two stages: (1) the microorganisms degrade sugars, fats, proteins in complex organic substances into simple substances such as lower fatty acids, alcohols, aldehydes, carbon dioxide, ammonia, hydrogen sulfide, and the like. (2) Some simple substances are changed into methane by the action of methane bacteria. This gas is called biogas because it was first found in marshes. The main components of the biogas are methane and carbon dioxide, wherein the methane accounts for 60-70%, the carbon dioxide accounts for 30-40%, and a small amount of gases such as hydrogen, carbon monoxide, hydrogen sulfide, oxygen, nitrogen and the like exist, and the biogas is mainly used for combustion power generation at present.

And the generating set that utilizes marsh gas can produce a large amount of heats at the during operation, and these heats can make generating set's circuit damage, so need cool down, but generally directly adopt the radiator cooling and directly discharge the heat, and the heat of taking away is directly arranged to the atmosphere in, does not obtain reasonable utilization, causes the extravagant energy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a marsh gas power generation system that heat energy was recycled to solve the produced extravagant problem of heat of generating set electricity generation.

In order to achieve the above object, the utility model provides a following technical scheme:

a biogas power generation system with heat energy recycling comprises a fermentation anaerobic reactor for biogas fermentation, an air storage and outlet pipe for storing fermentation biogas and a power generator, wherein the power generator is connected with the air storage and outlet pipe, the air storage and outlet pipe is connected with the fermentation anaerobic reactor through an air duct, an air pump is arranged in the middle of the air duct, a heating chamber is arranged at the bottom of the fermentation anaerobic reactor, a heater is arranged in the heating chamber, a waste heat recycling system is arranged between the fermentation anaerobic reactor and the power generator, the waste heat recycling system comprises a first heat exchanger arranged in the heating chamber, a second heat exchanger arranged in the power generator and a current collector, the second heat exchanger is connected with the current collector through a second connecting pipe, the current collector is connected with the first heat exchanger through two first connecting pipes, the power generator is composed of a plurality of power generator sets, and the second heat exchangers are in one, the second heat exchanger is of a water guide channel structure and surrounds the outer side of the generator set.

On the basis of the technical scheme, the utility model discloses still provide following optional technical scheme:

in one alternative: the fermentation anaerobic reactor is characterized in that a temperature sensor is further arranged inside the fermentation anaerobic reactor, the temperature sensor is electrically connected with a single chip microcomputer arranged on the outer wall of the fermentation anaerobic reactor, an electric control throttle valve is installed on the first connecting conduit, and the electric control throttle valve and the heater are electrically connected with the single chip microcomputer.

In one alternative: the heating chamber of the anaerobic fermentation reactor is also connected with a solar heating system through an air duct.

In one alternative: the anaerobic fermentation reactor is also connected with a crushing and homogenizing device for cutting up the biogas fermentation raw materials.

In one alternative: and a biological desulfurization tower for performing desulfurization treatment on the fermented methane is arranged between the air pump and the air storage and outlet pipe.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the system can conduct the heat generated by the power generation equipment into the biogas fermentor for heating by utilizing the waste heat recycling system, so that the heat generated by the power generation equipment can be fully utilized, the energy loss is reduced, the temperature in the biogas fermentor can be ensured, and the uniformity of biogas produced by fermentation is further ensured;

2. the utility model discloses simple structure, rational utilization resource when cooling down marsh gas generating set has improved the production of marsh gas, environmental protection and energy saving, and the practicality is stronger.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle generator set of the present invention.

Notations for reference numerals: the device comprises a fermentation anaerobic reactor 1, a crushing and homogenizing device 2, an air storage and outlet pipe 3, a power generator 4, an air pump 5, a biological desulfurization tower 6, a flow collecting and dividing device 7, a first connecting conduit 8, an electric control throttle valve 9, a second connecting conduit 10, a heater 11, a solar heating system 12, a single chip microcomputer 13, a temperature sensor 14, a power generator set 15, a first heat exchanger 17 and a second heat exchanger 18.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the drawings or description, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practical applications. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

Example 1

Referring to fig. 1 and 2, in an embodiment of the present invention, a biogas power generation system with heat energy recycling includes a fermentation anaerobic reactor 1 for biogas fermentation, a storage and outlet pipe 3 for storing fermentation biogas, and a generator 4, wherein the generator 4 is connected to the storage and outlet pipe 3, the storage and outlet pipe 3 is connected to the fermentation anaerobic reactor 1 through a gas pipe, and an air pump 5 is installed in the middle of the gas pipe, a heating chamber is disposed at the bottom of the fermentation anaerobic reactor 1, and a heater 11 is disposed inside the heating chamber, a waste heat recycling system is installed between the fermentation anaerobic reactor 1 and the generator 4, the waste heat recycling system includes a first heat exchanger 17 disposed in the heating chamber, a second heat exchanger 18 disposed in the generator 4, and a current collector 7, the second heat exchanger 18 is connected to the current collector 7 through a second connecting pipe 10, and the current collector 7 is connected to the first heat exchanger 17 through two first connecting pipes 8, the power generator 4 is composed of a plurality of power generator sets 15, second heat exchangers 18 correspond to the power generator sets 15 one by one, the second heat exchangers 18 are of a water guide channel structure, the second heat exchangers 18 surround the outer sides of the power generator sets 15, a temperature sensor 14 is further arranged inside the fermentation anaerobic reactor 1, the temperature sensor 14 is electrically connected with a single chip microcomputer 13 arranged on the outer wall of the fermentation anaerobic reactor 1, an electric control throttle valve 9 is mounted on the first connecting conduit 8, and the electric control throttle valve 9 and the heater 11 are both electrically connected with the single chip microcomputer 13;

when the device works, biogas generated by fermentation of biogas raw materials in the fermentation anaerobic reactor 1 is filled into the gas storage and outlet pipe 3 for storage through the gas pump 5, the gas storage and outlet pipe 3 guides the biogas into the power generator 4 for systematic power generation, heat generated by power generation of the power generator 4 is guided into the current collecting and distributing device 7 through the second heat exchanger 18 and the heater 11, the current collecting and distributing device 7 guides hot air into the heating chamber through the first connecting conduit 8 and exchanges heat with the inside of the heating chamber, the temperature sensor 14 can detect the temperature inside the fermentation anaerobic reactor 1, the temperature is transmitted to the single chip microcomputer 13 through signals, and the single chip microcomputer 13 controls the throttling quantity of the electric control throttle valve 9 and the heating temperature of the heater 11 to ensure that the temperature inside the fermentation anaerobic reactor 1 is constant, so that the.

Example 2

The embodiment of the utility model provides a difference with embodiment 1 lies in: the heating chamber of the fermentation anaerobic reactor 1 is also connected with a solar heating system 12 through an air duct, the solar heating system 12 can provide heat for the fermentation of the fermentation anaerobic reactor 1 by utilizing solar energy, the energy-saving effect can be further improved, the fermentation anaerobic reactor 1 is also connected with a crushing homogenization device 2 for chopping the fermentation raw materials of the methane so as to be more sufficient for fermentation, and a biological desulfurization tower 6 for desulfurizing the fermented methane is also arranged between the air pump 5 and the air storage and outlet pipe 3 so as to avoid power generation and combustion and waste gas.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A biogas power generation system with heat energy recycling comprises a fermentation anaerobic reactor (1) for biogas fermentation, an air storage and outlet pipe (3) and a power generator (4) for storing fermentation biogas, wherein the power generator (4) is connected with the air storage and outlet pipe (3), the air storage and outlet pipe (3) is connected with the fermentation anaerobic reactor (1) through an air pipe, and an air pump (5) is arranged in the middle of the air pipe, the biogas power generation system is characterized in that a heating chamber is arranged at the bottom of the fermentation anaerobic reactor (1), a heater (11) is arranged in the heating chamber, a waste heat recycling system is arranged between the fermentation anaerobic reactor (1) and the power generator (4), the waste heat recycling system comprises a first heat exchanger (17) arranged in the heating chamber, a second heat exchanger (18) and a current collector (7) arranged in the power generator (4), and the second heat exchanger (18) is connected with the current collector (7) through a second connecting conduit, the current collecting and distributing device (7) is connected to the first heat exchanger (17) through two first connecting pipes (8), the generator (4) is composed of a plurality of generator sets (15), the second heat exchangers (18) correspond to the generator sets (15) one by one, the second heat exchangers (18) are of a water guide channel structure, and the second heat exchangers (18) surround the outer sides of the generator sets (15).

2. The biogas power generation system capable of recycling heat energy according to claim 1, wherein a temperature sensor (14) is further arranged inside the anaerobic fermentation reactor (1), the temperature sensor (14) is electrically connected with a single chip microcomputer (13) arranged on the outer wall of the anaerobic fermentation reactor (1), the first connecting conduit (8) is provided with an electrically controlled throttle valve (9), and the electrically controlled throttle valve (9) and the heater (11) are both electrically connected with the single chip microcomputer (13).

3. The biogas power generation system with heat energy reuse according to claim 1, characterized in that the heating chamber of the anaerobic fermentation reactor (1) is further connected with a solar heating system (12) through a gas-guide tube.

4. The biogas power generation system with heat energy reuse according to any one of claims 1-3, characterized in that the anaerobic fermentation reactor (1) is further connected with a crushing and homogenizing device (2) for chopping biogas fermentation raw materials.

5. The biogas power generation system with heat energy reuse according to claim 4, wherein a biological desulfurization tower (6) for desulfurization treatment of the biogas generated by fermentation is further disposed between the air pump (5) and the gas storage and outlet pipe (3).