CN210197452U - System for heating by utilizing water waste heat of cylinder sleeve of biogas power generation - Google Patents

System for heating by utilizing water waste heat of cylinder sleeve of biogas power generation Download PDF

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Publication number
CN210197452U
CN210197452U CN201920957780.7U CN201920957780U CN210197452U CN 210197452 U CN210197452 U CN 210197452U CN 201920957780 U CN201920957780 U CN 201920957780U CN 210197452 U CN210197452 U CN 210197452U
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heat
outlet
inlet
communicated
biogas
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Inventor
Jianjun Hu
胡建军
Quanguo Zhang
张全国
Chao He
贺超
Yanyan Jing
荆艳艳
Zhiping Zhang
张志萍
Wei Wang
王伟
Huan Zhang
张寰
Zhentao Jia
贾镇滔
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Henan Agricultural University
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Henan Agricultural University
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Priority to CN2018222468830 priority
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The utility model relates to a system for heating by utilizing the waste heat of cylinder jacket water of biogas power generation, which comprises an anaerobic fermentation tank, a biogas generator set, a heat pump unit and a circulating heat exchange water tank; the bottom of the anaerobic fermentation tank is provided with a heat-insulating pipe, the inlet of the heat-insulating pipe is communicated with the first outlet of the heat pump unit, and the outlet of the heat-insulating pipe is communicated with the biogas generator set; the outlet of the biogas generator set is communicated with the first inlet of the heat pump set; the first inlet of the circulating heat exchange water tank is communicated with the second outlet of the heat pump unit, the first outlet of the circulating heat exchange water tank is communicated with the second inlet of the heat pump unit, the second outlet and the second inlet of the circulating heat exchange water tank are communicated through a conveying pipeline, and a first branch pipeline is arranged on the conveying pipeline. The utility model discloses can utilize the energy effectively to heat to the continuity of heating has been guaranteed.

Description

System for heating by utilizing water waste heat of cylinder sleeve of biogas power generation
Technical Field
The utility model belongs to the technical field of marsh gas waste heat utilization, concretely relates to utilize system of marsh gas power generation cylinder liner water waste heat heating.
Background
With the modern development of agriculture in China, the national policies encourage the utilization of organic wastes such as rural straws, domestic garbage, forestry residues, livestock and poultry breeding wastes and the like, the construction of large and medium-sized biogas projects is actively promoted, and biogas can be collected after purification for commercial development and can be used for power generation and internet surfing. After the methane power generation, the waste heat of the cylinder sleeve water of the power generation equipment belongs to a low-temperature heat source and is easily ignored, and the system utilizes the waste heat of the cylinder sleeve water for heat preservation of the anaerobic fermentation tank and heating of residents, so that the energy utilization efficiency of the equipment is improved.
The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called as a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production. At present, many heat exchangers have slow heat exchange rate and poor heat exchange effect. The circulating water tank heat exchanger of the system not only utilizes the heat pipe technology to increase the heat exchange rate, but also utilizes the convective heat exchange technology to improve the heat exchange efficiency.
Due to the continuity of heating requirements and the discontinuity of biogas production, a vacant period of power generation occurs. Therefore, it is necessary to design a system that can make full use of energy and provide continuous heating.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide an utilize marsh gas power generation cylinder liner water waste heat heating's system, the system can utilize the waste heat of power generation facility cylinder liner water to heat, and the system can make full use of low temperature energy, improves energy utilization efficiency. And the continuity of water waste heat heating of the cylinder sleeve of the methane power generation is ensured.
The utility model adopts the following technical scheme:
a system for heating by utilizing the waste heat of cylinder jacket water of biogas power generation comprises an anaerobic fermentation tank, a biogas generator set, a heat pump unit and a circulating heat exchange water tank;
the bottom of the anaerobic fermentation tank is provided with a heat-insulating pipe, the inlet of the heat-insulating pipe is communicated with the first outlet of the heat pump unit, and the outlet of the heat-insulating pipe is communicated with the biogas generator set;
the outlet of the biogas generator set is communicated with the first inlet of the heat pump set;
the first inlet of the circulating heat exchange water tank is communicated with the second outlet of the heat pump unit, the first outlet of the circulating heat exchange water tank is communicated with the second inlet of the heat pump unit, the second outlet and the second inlet of the circulating heat exchange water tank are communicated through a conveying pipeline, and a first branch pipeline is arranged on the conveying pipeline;
and the gas outlet of the anaerobic fermentation tank is connected with a gas storage tank, and the gas outlet of the gas storage tank is connected with the gas inlet of the biogas generator set.
Further, the system also comprises an air heat source pump which is arranged between the anaerobic fermentation tank and the heat pump unit and is connected with the biogas generator set in parallel;
the inlet of the air heat source pump is communicated with a connecting pipeline of the anaerobic fermentation tank and the biogas generator set through a first three-way valve, and the outlet of the air heat source pump is communicated with a connecting pipeline of the biogas generator set and the heat pump set through a second three-way valve.
Further, a gas flow meter is arranged on a gas transmission pipeline between the anaerobic fermentation tank and the gas storage tank.
Further, the heat pump unit is a second type lithium bromide absorption heat pump.
Furthermore, a first water pump is arranged on a pipeline which is communicated with the inlet of the anaerobic fermentation tank and the first outlet of the second type lithium bromide absorption heat pump;
a second water pump is arranged on a pipeline through which the first outlet of the circulating heat exchange water tank is communicated with the second inlet of the second type lithium bromide absorption heat pump;
and a third water pump is arranged on a pipeline for communicating the second outlet with the second inlet of the circulating heat exchange water tank.
Further, the inlet of the first branch pipeline is communicated with the delivery pipeline through a third three-way valve.
Furthermore, a plurality of layers of heat preservation pipes are arranged in the anaerobic fermentation tank.
The utility model discloses beneficial effect does:
1) the utility model discloses a marsh gas in the anaerobic fermentation pond generates electricity to the cylinder liner water that utilizes marsh gas generating set's cooling system carries out the heat supply that circulates, has utilized microthermal heat source effectively, has improved the utilization efficiency of the energy and marsh gas power generation system's economic benefits.
2) The utility model discloses be equipped with the parallelly connected air heat source pump with marsh gas generating set, through the setting of air heat source pump, guaranteed the continuity of heating when marsh gas output is insufficient on the one hand, on the other hand can last carry the hot water to the insulating tube of anaerobic fermentation pond in for the anaerobic fermentation pond that keeps warm to guarantee the output of marsh gas.
3) The utility model discloses an in the insulating tube with anaerobic fermentation pond is carried into to the circulating water of second type lithium bromide absorption heat pump, guaranteed the utilization efficiency of the energy on the one hand, on the other hand can improve effectively towards the productivity of gas, has guaranteed that generating efficiency has also improved heating efficiency simultaneously.
4) The utility model discloses three kinds of functions as an organic whole of collection anaerobic fermentation pond heat preservation, peasant household power supply and heating, make full use of marsh gas power generation's waste heat has improved the productivity of marsh gas, has utilized circulation heat transfer water tank to improve heat exchange efficiency, has satisfied life and energy needs such as rural area power consumption, heat supply to realize the degree of depth and the high-efficient utilization of marsh gas power generation waste heat, reach the step utilization of the energy, thereby improved whole marsh gas power generation system's energy utilization and economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of a system for heating by using the water waste heat of the cylinder sleeve for biogas power generation.
Detailed Description
The system for heating by using the waste heat of the cylinder sleeve water of the methane power generation cylinder of the present invention is described in detail with reference to the attached drawings.
Example 1
A system for heating by utilizing the waste heat of cylinder jacket water of biogas power generation comprises an anaerobic fermentation tank 1, a biogas generator set 3, a heat engine set pump and a circulating heat exchange water tank 6; in this embodiment, the heat pump unit is a second-type lithium bromide absorption heat pump 5, the second-type lithium bromide absorption heat pump 5 can effectively utilize a low-grade heat source, and an evaporator and a generator included in the second-type lithium bromide absorption heat pump 5 realize circulating pumping of heat from a low-temperature heat source to a high-temperature heat source, so that energy can be saved and the environment can be protected during use.
A multilayer heat-insulating pipe 11 is coiled at the bottom of the anaerobic fermentation tank 1, an inlet of the heat-insulating pipe 11 is communicated with a first outlet of a second lithium bromide absorption heat pump 5, and an outlet of the heat-insulating pipe 11 is communicated with a biogas generator set 3; and a first water pump 91 is arranged on a pipeline for communicating the inlet of the heat-insulating pipe 11 of the anaerobic fermentation tank 1 with the first outlet of the second lithium bromide absorption heat pump 5. The hot water in the second lithium bromide absorption heat pump 5 after absorbing the waste heat of the cylinder sleeve water is conveyed into the heat insulation pipe 11 of the anaerobic fermentation tank 1, and the anaerobic fermentation tank 1 is insulated through the heat insulation pipe 11, so that the methane yield is improved. The hot water in the heat preservation pipe 11 flows into a cooling water system of the biogas generator set 3 after being used, and cools the biogas generator set 3.
The outlet of the biogas generator set 3 is communicated with the first inlet of the second type lithium bromide absorption heat pump 5; the cylinder jacket water generated by the biogas generator set 3 enters an evaporator and a generator in the second lithium bromide absorption heat pump 5 for heat exchange, and the cylinder jacket water with heat after heat exchange is generated.
In this embodiment, the system for heating by using the waste heat of the cylinder jacket water of the biogas power generation further comprises an air heat source pump 4 which is arranged between the anaerobic fermentation tank 1 and the second lithium bromide absorption heat pump 5 and is connected with the biogas generator set 3 in parallel; the inlet of the air heat source pump 4 is communicated with the connecting pipeline of the anaerobic fermentation tank 1 and the biogas generator set 3 through a first three-way valve 81, and the outlet of the air heat source pump 4 is communicated with the connecting pipeline of the biogas generator set 3 and the second lithium bromide absorption heat pump 5 through a second three-way valve 82. The air heat source pump 4 can ensure that water is heated and conveyed into the evaporator and the generator of the second lithium bromide absorption heat pump 5 for heat exchange when the biogas output is not enough for power generation. On one hand, the second lithium bromide absorption heat pump 5 can provide water with heat to enter the heat preservation pipe 11 of the anaerobic fermentation tank 1 to improve the efficiency of anaerobic fermentation, so that the methane yield is improved; on the other hand, the second-type lithium bromide absorption heat pump 5 can provide a heat source for the circulating heat exchange water tank 6.
The first inlet of the circulating heat exchange water tank 6 is communicated with the second outlet of the second type lithium bromide absorption heat pump 5, the first outlet of the circulating heat exchange water tank 6 is communicated with the second inlet of the second type lithium bromide absorption heat pump 5, the second outlet and the second inlet of the circulating heat exchange water tank 6 are communicated through a conveying pipeline, a first branch pipeline is arranged on the conveying pipeline, and the inlet of the first branch pipeline is communicated with the conveying pipeline through a third three-way valve 83; and a second water pump 92 is arranged on a pipeline communicated with the first outlet of the circulating heat exchange water tank 6 and the second inlet of the second lithium bromide absorption heat pump 5, and a third water pump 93 is arranged on a pipeline communicated with the second outlet and the second inlet of the circulating heat exchange water tank.
The gas outlet of the anaerobic fermentation tank 1 is connected with a gas storage tank 2, and the gas outlet of the gas storage tank 2 is connected with the gas inlet of a biogas generator set 3; a gas flowmeter 7 is arranged on a gas transmission pipeline between the anaerobic fermentation tank 1 and the gas storage tank 2, and a gas valve 84 is arranged on a gas transmission pipeline between the gas storage tank 2 and the methane generator set 3. The biogas in the anaerobic fermentation tank 1 is conveyed into the gas storage tank 2, when the biogas in the gas storage tank 2 is stored to a certain content, the gas valve 84 is opened, the biogas enters the biogas generator set 3, and the biological heat energy of the biogas is converted into electric energy for residents to use through the combustion of an internal combustion engine in the biogas generator set 3 and the power generation of a generator, so that the biogas is used for the illumination of the residents in daily life and the like.
When the biogas generating set is used, biogas generated by the anaerobic fermentation tank 1 is conveyed into the gas storage tank 2, when the biogas in the gas storage tank 2 is stored to a certain content, the gas valve 84 is opened, the biogas enters the biogas generating set 3, and the biological heat energy of the biogas is converted into electric energy for residents to use through combustion of the internal combustion engine and power generation of the generator, so that the electric energy is used for the residents to use in daily life. The cylinder jacket water generated by the methane generator set 3 after cooling enters an evaporator and a generator of the second type lithium bromide absorption heat pump 5 for heat exchange through the second three-way valve 82, the second type lithium bromide absorption heat pump 5 utilizes the waste heat from the cylinder jacket water and exchanges heat through an absorber in the second type lithium bromide absorption heat pump 5 so as to obtain hot water, the hot water flows into the circulating heat exchange water tank 6 for heat exchange, the water at the heated end of the circulating heat exchange water tank 6 repeatedly enters the circulating heat exchange water tank 6 for heat exchange until the preset temperature is reached, the third three-way valve 83 is adjusted, and the hot water flows out from the first branch pipeline for farmers to use; hot water in a heat source region in the circulating heat exchange water tank 6 flows back to the absorber of the second lithium bromide absorption heat pump 5 to continuously absorb heat and circulate repeatedly; the cylinder sleeve water with heat after heat exchange in the second lithium bromide absorption heat pump 5 is conveyed into the heat insulation pipe 11 of the anaerobic fermentation tank 1, and then conveyed into a cooling system of the biogas generator set 3 from the heat insulation pipe 11 for cyclic utilization.
When the methane yield is not enough to generate electricity, an air heat source pump 4 is used for auxiliary heat supply. Stopping conveying the biogas from the gas storage tank 2 to the biogas generator set 3, starting storing the biogas in the gas storage tank 2, adjusting the first three-way valve 81, and conveying the water in the heat preservation pipe 11 into the air heat source pump 4 for heating; and adjusting a second three-way valve 82, conveying hot water heated by the air heat source pump 4 into an evaporator and a generator of a second lithium bromide absorption heat pump 5 for heat exchange, conveying the hot water subjected to heat exchange by an absorber of the second lithium bromide absorption heat pump 5 into a circulating heat exchange water tank 6, repeatedly conveying the water at the heated end into the circulating heat exchange water tank 6 for heat exchange after the heat exchange in the circulating heat exchange water tank 6 is finished, adjusting a third three-way valve 83, and allowing the hot water to flow out through a first branch pipeline for use by farmers.
The system of example 1 heats by using the cylinder jacket water of the anaerobic fermentation tank, the biogas yield of the anaerobic fermentation tank of example 1 is 90 m/d, the heating time provided by the cylinder jacket water generated by power generation of the biogas generated by fermentation is 8.35h/d, and 50 users can be heated.
In the system in the embodiment 1, the heating time of the heat source provided by the air heat source pump is 11h/d, and the heating time of the air heat source pump is 8h, so that the methane produced by the anaerobic fermentation tank can be used for generating power and then continuously utilizing the waste heat of cylinder sleeve water.
The total heat recovered from the cylinder liner water per day is equivalent to the heat of burning 76.77kg of standard coal.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. A system for heating by utilizing the waste heat of cylinder jacket water of biogas power generation is characterized by comprising an anaerobic fermentation tank, a biogas power generation unit, a heat pump unit and a circulating heat exchange water tank;
the bottom of the anaerobic fermentation tank is provided with a heat-insulating pipe, the inlet of the heat-insulating pipe is communicated with the first outlet of the heat pump unit, and the outlet of the heat-insulating pipe is communicated with the biogas generator set;
the outlet of the biogas generator set is communicated with the first inlet of the heat pump set;
the first inlet of the circulating heat exchange water tank is communicated with the second outlet of the heat pump unit, the first outlet of the circulating heat exchange water tank is communicated with the second inlet of the heat pump unit, the second outlet and the second inlet of the circulating heat exchange water tank are communicated through a conveying pipeline, and a first branch pipeline is arranged on the conveying pipeline;
and the gas outlet of the anaerobic fermentation tank is connected with a gas storage tank, and the gas outlet of the gas storage tank is connected with the gas inlet of the biogas generator set.
2. The system for heating by using the water waste heat of the cylinder sleeve for biogas power generation as claimed in claim 1, further comprising an air heat source pump arranged between the anaerobic fermentation tank and the heat pump unit and connected in parallel with the biogas power generator unit;
the inlet of the air heat source pump is communicated with a connecting pipeline of the anaerobic fermentation tank and the biogas generator set through a first three-way valve, and the outlet of the air heat source pump is communicated with a connecting pipeline of the biogas generator set and the heat pump set through a second three-way valve.
3. The system for heating by using the water waste heat of the cylinder sleeve for biogas power generation as claimed in claim 1, wherein a gas flow meter is arranged on a gas transmission pipeline between the anaerobic fermentation tank and the gas storage tank.
4. The system for heating by using the water waste heat of the cylinder sleeve for biogas power generation as claimed in claim 1, wherein the heat pump unit is a second-type lithium bromide absorption heat pump.
5. The system for heating by using the waste heat of the cylinder sleeve water for biogas power generation as claimed in claim 4, wherein a first water pump is arranged on a pipeline communicating an inlet of the anaerobic fermentation tank with a first outlet of the second type lithium bromide absorption heat pump;
a second water pump is arranged on a pipeline through which the first outlet of the circulating heat exchange water tank is communicated with the second inlet of the second type lithium bromide absorption heat pump;
and a third water pump is arranged on a pipeline for communicating the second outlet with the second inlet of the circulating heat exchange water tank.
6. The system for heating by using the water waste heat of the cylinder sleeve for biogas power generation as claimed in claim 1, wherein the inlet of the first branch pipeline is communicated with the delivery pipeline through a third three-way valve.
7. The system for heating by using the waste heat of the cylinder sleeve for methane power generation as claimed in claim 1, wherein a plurality of layers of heat preservation pipes are arranged in the anaerobic fermentation tank.
CN201920957780.7U 2018-12-29 2019-06-25 System for heating by utilizing water waste heat of cylinder sleeve of biogas power generation Active CN210197452U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201822246883 2018-12-29
CN2018222468830 2018-12-29

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CN210197452U true CN210197452U (en) 2020-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111392827A (en) * 2020-04-26 2020-07-10 深圳市冠融辰环保科技有限公司 Sewage treatment system and process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111392827A (en) * 2020-04-26 2020-07-10 深圳市冠融辰环保科技有限公司 Sewage treatment system and process
CN111392827B (en) * 2020-04-26 2020-10-27 深圳市冠融辰环保科技有限公司 Sewage treatment system and process

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