CN210801685U - Combined cooling heating and power system with biogas combined cycle - Google Patents
Combined cooling heating and power system with biogas combined cycle Download PDFInfo
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- CN210801685U CN210801685U CN201921652989.9U CN201921652989U CN210801685U CN 210801685 U CN210801685 U CN 210801685U CN 201921652989 U CN201921652989 U CN 201921652989U CN 210801685 U CN210801685 U CN 210801685U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a combined cooling heating and power system of biogas combined cycle, which comprises a biogas power generation system, an absorption refrigeration system and a heating system, wherein the biogas power generation system comprises a biogas tank, a biogas purification device, an internal combustion engine, a generator and a cylinder sleeve water heat exchanger which are connected in sequence; the absorption refrigeration system comprises a generator, a condenser, an evaporator and an absorber; the heating system comprises a flue gas hot water heat exchanger and a heat storage water tank, the outer wall of the methane tank is wound with a water pipe, and a cylinder sleeve water outlet of the internal combustion engine is connected to an inlet of the water pipe through a regulating valve; the flue gas outlet of internal-combustion engine is connected to generator and flue gas hot water heat exchanger respectively, and the generator is connected to the power consumption end, and the evaporimeter is connected to the refrigeration end, and the condenser is connected to life hot water end, and the hot water storage tank is connected to heating end and life hot water end respectively. The utility model discloses on the basis of recycle marsh gas, combine with the combined cooling heating and power system, effectively solve the energy self-sufficiency in the richer area of biomass energy.
Description
Technical Field
The utility model relates to a clean energy utilization technical field, concretely relates to cold, heat and electricity cogeneration system of marsh gas combined cycle.
Background
Based on the cascade utilization of energy, a combined cooling heating and power system (CCHP) is an important realization way for the efficient utilization of energy. The rural area has abundant biomass energy resources, so that the development of biogas engineering is promoted, and the problems of high-efficiency recycling of organic wastes and rural environmental pollution can be solved. The existing combined cooling heating and power system utilizing methane or biomass is complex, the initial investment of the system is high, the energy utilization rate is low, the heat and the cold provided by the system cannot be matched with the cold and the heat required by a building, the energy supply stability is difficult to guarantee when the load demand is high, the system is inflexible to adjust, the energy supply mode is single, the energy supply cost is high, and the system is not beneficial to embodying the energy conservation and the economy of the system. Meanwhile, when the fermentation temperature in the biogas tank is low, the yield of biogas cannot meet the power generation requirement, and the system efficiency is greatly reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model combines the biogas with a combined cooling heating and power system on the basis of recycling the biogas, establishes a combined cooling heating and power system of biogas combined cycle, and effectively solves the self-sufficiency of energy in the areas with rich biomass energy.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a combined cooling heating and power system with biogas combined cycle comprises a biogas power generation system, an absorption refrigeration system and a heating system, wherein the biogas power generation system comprises a biogas tank, a biogas purification device, an internal combustion engine and a generator which are connected in sequence; the absorption refrigeration system comprises a generator, a condenser, an evaporator and an absorber; the heating system comprises a smoke hot water heat exchanger and a heat storage water tank, the outer wall of the methane tank is wound with a water pipe, a cylinder sleeve water outlet of the internal combustion engine is connected to an inlet of the water pipe through a regulating valve, the methane power generation system further comprises a cylinder sleeve water heat exchanger, the cylinder sleeve water heat exchanger is provided with a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is connected to the outlet of the water pipe, and the first outlet is connected to the cylinder sleeve water inlet of the internal combustion engine; the second inlet is connected with normal-temperature water, and the second outlet is respectively connected with the absorber and the flue gas hot water heat exchanger; the flue gas outlet of internal-combustion engine is connected to generator and flue gas hot water heat exchanger respectively, and the generator is connected to the power consumption end, and the evaporimeter is connected to the refrigeration end, and the condenser is connected to life hot water end, and the hot water storage tank is connected to heating end and life hot water end respectively.
As one of the preferable schemes of the utility model, the internal combustion engine is also connected with a gas pipeline, and the methane and the gas drive the internal combustion engine to work together.
As one of the preferable proposal of the utility model, a temperature sensor is arranged in the methane tank, and the opening degree of the regulating valve is determined by the detection value of the temperature sensor.
As one of the preferred schemes of the utility model, the exhanst gas outlet of internal-combustion engine is connected to the generator through first valve respectively, is connected to flue gas hot water heat exchanger through the fourth valve, and the exhanst gas outlet of generator and flue gas hot water heat exchanger all is equipped with gas cleaning device.
As one of the preferable schemes of the present invention, the second outlet of the cylinder liner water heat exchanger is connected to the absorber through the second valve and connected to the flue gas hot water heat exchanger through the third valve, the hot water outlet of the absorber is connected to the condenser, and the hot water outlet of the condenser is connected to the end of the domestic hot water; and a hot water outlet of the flue gas hot water heat exchanger is connected to the heat storage water tank.
As one of the preferred schemes of the utility model, the hot water storage tank passes through the water pump and is connected to the heating end through the fifth valve respectively, is connected to flue gas hot water heat exchanger through the sixth valve, and the export of heating end is connected to flue gas hot water heat exchanger through the seventh valve.
As one of the preferable schemes of the present invention, the hot water storage tank is further provided with a second hot water outlet, and the second hot water outlet is connected to the end of the domestic hot water.
As one of the preferable schemes of the present invention, the generator is further connected with a storage battery.
As one of the preferable embodiments of the present invention,
compared with the prior art, the utility model discloses possess following beneficial effect at least:
the biogas is combined with the natural gas to drive the internal combustion engine to generate power, and meanwhile, the smoke heat of the internal combustion engine and the water heat of the cylinder sleeve drive the absorption refrigeration system and the heating system to supply cold, heat and domestic hot water for users, so that combined supply of cold, heat and power is realized, and the system efficiency is higher. Meanwhile, the heat of the cylinder sleeve water of the internal combustion engine is used for heating the methane tank, so that the methane tank is in a proper fermentation temperature, the supply of methane is ensured, the water after the methane tank is heated is further heated by the cylinder sleeve water heat exchanger, the flue gas-water heat exchanger or the absorber, domestic hot water and heating water are provided, and the energy utilization efficiency is improved.
Drawings
FIG. 1 is a schematic flow diagram of the system of the present invention;
fig. 2 is a schematic flow chart of the combined supply of cold, heat and electricity in summer;
fig. 3 is a schematic view of the system of the present invention showing the flow of combined cooling, heating and power supply in winter.
In the figure: 1. the system comprises a methane tank, 2, a methane purification device, 3, an internal combustion engine, 4, a regulating valve, 5, a generator, 6, a storage battery, 7, a cylinder sleeve water heat exchanger, 8, a generator, 9, a condenser, 10, an expansion valve, 11, an evaporator, 12, an absorber, 14, a solution heat exchanger, 15, a first valve, 16, a first flue gas purification device, 17, a flue gas hot water heat exchanger, 18, a heat storage water tank, 19, a water pump, 20, a radiator, 21, a second flue gas purification device, 22, a second valve, 23, a third valve, 24, a fourth valve, 25, a fifth valve, 26, a sixth valve, 27 and a seventh valve.
Detailed Description
The present invention will be further explained with reference to the following embodiments. The embodiments of the present invention are intended to better enable those skilled in the art to better understand the present invention, and do not limit the present invention.
As shown in fig. 1, the combined cooling, heating and power system of the biogas combined cycle of the present invention includes a biogas power generation system, an absorption refrigeration system and a heating system, wherein the biogas power generation system includes a biogas tank 1, a biogas purification device 2, an internal combustion engine 3 and a generator 5 which are connected in sequence; the absorption refrigeration system comprises a generator 8, a condenser 9, an evaporator 11 and an absorber 12; the heating system comprises a flue gas hot water heat exchanger 17 and a heat storage water tank 18.
The methane tank 1 is connected with the inlet of the methane purifying device 2 through a pipeline to remove impurities contained in the methane; the outlet of the methane purification device 2 is connected with the first inlet of the internal combustion engine 3 through a pipeline, and the generated high-temperature high-pressure circulating working medium expands to output kinetic energy; the natural gas is connected with a second inlet of the internal combustion engine 3 through a pipeline to supplement insufficient fuel; the second outlet of the internal combustion engine 3 is connected with the generator through a linkage shaft, the kinetic energy output by the internal combustion engine 3 is transmitted to the generator 5, and the generator 5 converts the kinetic energy into electric energy to be provided for users; the generator 5 is also connected to a battery 6, and the generated excess electric quantity is stored in the battery 6.
The cylinder liner water outlet produced by the internal combustion engine 3 is connected with the water pipe inlet laid around the methane tank through the pipeline provided with the regulating valve 4, after the methane tank 3 absorbs heat, the cooled cylinder liner water flows through the first inlet of the cylinder liner water heat exchanger 7 to preheat normal temperature water and then returns to the cylinder liner water inlet of the internal combustion engine 3, so as to maintain the methane tank 3 at a proper fermentation temperature.
The temperature sensor is installed at the bottom of the methane tank 3, the regulating valve 4 is installed on the water inlet side of the cylinder sleeve, the input end of the controller is connected with the temperature sensor, the output end of the controller is connected with the regulating valve 4, and the opening degree of the regulating valve 4 is controlled according to the detection value of the temperature sensor so as to meet the requirement of actual working conditions.
A smoke outlet of the internal combustion engine 3 is connected with a first inlet of the generator 8 through a first valve 15 by flowing through a pipeline, and after high-temperature smoke heat is transferred to a circulating working medium in the generator 8, the smoke is discharged through a first smoke purification device 16; a second inlet of the generator 8 is connected with the condenser 9 through a pipeline, and the refrigerant vapor gasified by absorbing heat in the generator 8 enters the condenser 9 to be liquefied; the outlet of the condenser 9 is connected with the inlet of an expansion valve 10, and the liquid refrigerant is decompressed and cooled by the expansion valve; the outlet of the expansion valve 10 is connected with the inlet of the evaporator 11, and the liquid refrigerant is gasified in the evaporator 11 to absorb indoor heat to generate a cold effect; an outlet of the absorbent concentrated solution in the generator 8 flows through a first inlet of a solution heat exchanger 14 to enter the absorber 12, the absorbent concentrated solution continuously absorbs the refrigerant vapor from the evaporator 11 in the absorber 12 to form a binary solution, and then the binary solution flows to a second inlet of the solution heat exchanger through the working medium pump to absorb the heat of the absorbent concentrated solution and returns to the generator 8, so that the flue gas absorption type refrigeration cycle is completed.
A flue gas outlet of the internal combustion engine 3 is connected with a first inlet of the flue gas hot water heat exchanger 17 through a fourth valve 24 by flowing through a pipeline, and high-temperature flue gas heat is transferred to a circulating working medium in the flue gas hot water heat exchanger 17 and then is discharged through a second flue gas purification device 21; a second outlet of the flue gas hot water heat exchanger 17 is connected with a heat storage water tank 18 through a pipeline, circulating working medium water heated after absorbing high-temperature flue gas heat enters the heat storage water tank 18, and a second hot water outlet is arranged beside the heat storage water tank 18 to supply domestic hot water; the outlet of the heat storage water tank 18 delivers the hot water to the heating user side through the circulating water pump 19, and then the hot water returns to the flue gas hot water heat exchanger 17, so that the heating cycle is completed.
The normal-temperature water pipe firstly absorbs the cylinder sleeve water return heat through the second inlet of the cylinder sleeve water heat exchanger 7, and sequentially flows through the absorber 12 and the condenser 9 through the second valve 22, and the normal-temperature water absorbs the heat and is heated to supply domestic hot water for users; and the normal temperature water pipeline enters the heating circulating pipeline through the third valve 23 to supplement lost circulating water for heating circulation.
In actual operation, the specific flow of the system described in this embodiment is as follows:
collecting livestock excrement in a farm through a methane tank 1, fermenting to generate methane, feeding the methane into a methane purification device 2 through a pipeline, driving a gas internal combustion engine 3 to generate power by the purified methane when the generated methane is sufficient, driving a generator 5 to generate electric energy, and providing the electric energy for a user, wherein the redundant electric energy is stored through a storage battery 6; when the amount of the generated biogas is insufficient, the natural gas afterburning is started, and the purified biogas and the natural gas drive the internal combustion engine 3 together to generate power to drive the generator 5 to generate electric energy. In the process, the cylinder liner water generated by the internal combustion engine 3 enters the water pipes arranged around the methane tank 1 through the regulating valve 4 to maintain the temperature of the methane tank and improve the methane yield, and the cylinder liner water after exchanging heat with the methane tank flows out of the methane tank, enters the cylinder liner water heat exchanger 7 to be cooled and then returns to the internal combustion engine 3 to complete the water circulation of the cylinder liner.
As shown in fig. 2, in summer, the first valve 15 is opened, the fourth valve 24 is closed, the high-temperature flue gas generated by the internal combustion engine 3 enters the generator 8 through the first valve 15, and the flue gas after heat exchange is purified by the first flue gas purification device 16 and then discharged. After the refrigerant-absorbent solution in the generator 8 absorbs the waste heat of the high-temperature flue gas, the refrigerant with a low boiling point is gasified and separated from the absorbent, then the refrigerant vapor enters the condenser 9 to be liquefied, the liquid refrigerant is decompressed and cooled by the expansion valve 10 and enters the evaporator 11 to be gasified in the evaporator 11, and the indoor heat is absorbed to generate a refrigeration effect; the absorbent concentrated solution separated from the refrigerant flows through the solution heat exchanger 14 to enter the absorber 12, continuously absorbs the refrigerant vapor from the evaporator 11 to form a refrigerant-absorbent solution, after the refrigerant-absorbent solution is boosted by the solution pump 13, the refrigerant-absorbent solution firstly enters the solution heat exchanger 14 to absorb the heat of the concentrated solution, and then returns to the generator to complete the absorption refrigeration cycle with the heat exchanger.
The normal temperature water is heated once through the cylinder liner water heat exchanger 7, the second valve 22 is opened, and the water sequentially enters the absorber 12 and the condenser 9 and finally flows out to provide domestic hot water.
As shown in fig. 3, under the working condition in winter, the first valve 15 is closed, the fourth valve 24 is opened, the high-temperature flue gas generated by the internal combustion engine 3 enters the fourth valve 24 and enters the flue gas hot water heat exchanger 17, and the flue gas after heat exchange is purified by the second flue gas purification device 21 and then is discharged. After absorbing the heat of high-temperature flue gas in the flue gas hot water heat exchanger 17, the heat transfer medium water rises in temperature, enters the heat storage water tank 18, opens the fifth valve 25 and the seventh valve 27, and the water pump 19 sends hot water to the indoor radiator 20 for heating, and then returns to the flue gas hot water heat exchanger 17 again to complete the heating cycle.
Normal temperature water is heated once through cylinder liner water heat exchanger 7, opens third valve 23, gets into in proper order and absorbs high temperature flue gas heat in the flue gas hot water heat exchanger, gets into the heat accumulation water tank, and the heat accumulation water tank provides life hot water for life hot water end through the second hot water export.
Under the working condition of a transition season, the system supplies power and simultaneously closes the first valve 15, the second valve 22, the fifth valve 25 and the seventh valve 27 and opens the third valve 23, the fourth valve 24 and the sixth valve 26 to supply hot water to the heat storage water tank 18 so as to supply domestic hot water to a user.
It can be seen that the utility model discloses utilize marsh gas to combine the electricity generation of natural gas drive internal-combustion engine, the flue gas heat and the cylinder liner heat drive absorption refrigeration system and the heating system of internal-combustion engine realize the combined cooling and heating power supply for the user cooling, heating and provide life hot water simultaneously, and system efficiency is higher. Meanwhile, the heat of the cylinder sleeve water of the internal combustion engine is used for heating the methane tank, so that the methane tank is in a proper fermentation temperature, the supply of methane is ensured, the water after the methane tank is heated is further heated by the cylinder sleeve water heat exchanger, the flue gas-water heat exchanger or the absorber, domestic hot water and heating water are provided, and the energy utilization efficiency is improved.
The above description is not intended to limit the present invention, and any person skilled in the art can make possible variations and modifications without departing from the spirit and scope of the present invention, and therefore the scope of protection of the present invention should be determined by the scope defined by the claims of the present invention.
Claims (8)
1. A combined cooling heating and power system with biogas combined cycle comprises a biogas power generation system, an absorption refrigeration system and a heating system, wherein the biogas power generation system comprises a biogas tank, a biogas purification device, an internal combustion engine and a generator which are connected in sequence; the absorption refrigeration system comprises a generator, a condenser, an evaporator and an absorber; heating system includes flue gas hot water heat exchanger and heat storage water tank, its characterized in that:
a water pipe is wound on the outer wall of the methane tank, a cylinder sleeve water outlet of the internal combustion engine is connected to an inlet of the water pipe through a regulating valve,
the methane power generation system also comprises a cylinder sleeve water heat exchanger which is provided with a first inlet, a first outlet, a second inlet and a second outlet,
the first inlet is connected to the outlet of the water pipe, and the first outlet is connected to a cylinder liner water inlet of the internal combustion engine;
the second inlet is connected with normal-temperature water, and the second outlet is respectively connected with the absorber and the flue gas hot water heat exchanger;
the smoke outlet of the internal combustion engine is respectively connected with the generator and the smoke hot water heat exchanger,
the generator is connected to the power consumption end, and the evaporimeter is connected to the refrigeration end, and the condenser is connected to life hot water end, and the hot water storage tank is connected to heating end and life hot water end respectively.
2. A combined cooling, heating and power system for biogas combined cycle according to claim 1, wherein: the internal combustion engine is also connected with a gas pipeline, and the methane and the gas drive the internal combustion engine to work together.
3. A combined cooling, heating and power system for biogas combined cycle according to claim 2, wherein: a temperature sensor is arranged in the methane tank, and the opening degree of the regulating valve is determined by the detection value of the temperature sensor.
4. A combined cooling, heating and power system for biogas combined cycle according to claim 3, wherein: the smoke outlet of the internal combustion engine is connected to the generator through the first valve and connected to the smoke hot water heat exchanger through the fourth valve, and smoke purifying devices are arranged at the smoke outlets of the generator and the smoke hot water heat exchanger.
5. The combined cooling, heating and power system of biogas combined cycle according to claim 4, wherein: a second outlet of the cylinder sleeve water heat exchanger is respectively connected to the absorber through a second valve and connected to the flue gas hot water heat exchanger through a third valve,
a hot water outlet of the absorber is connected to a condenser, and a hot water outlet of the condenser is connected to the end of domestic hot water; and a hot water outlet of the flue gas hot water heat exchanger is connected to the heat storage water tank.
6. A combined cooling, heating and power system for biogas combined cycle according to claim 5, wherein: the heat storage water tank is connected to the heating end through a fifth valve and a sixth valve respectively through a water pump, and the outlet of the heating end is connected to the flue gas hot water heat exchanger through a seventh valve.
7. A combined cooling, heating and power system for biogas combined cycle according to claim 6, wherein: the heat storage water tank is also provided with a second hot water outlet which is connected to the end of the domestic hot water.
8. A combined cooling, heating and power system for biogas combined cycle according to claim 1, wherein: the generator is also connected with a storage battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921652989.9U CN210801685U (en) | 2019-09-30 | 2019-09-30 | Combined cooling heating and power system with biogas combined cycle |
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| CN201921652989.9U CN210801685U (en) | 2019-09-30 | 2019-09-30 | Combined cooling heating and power system with biogas combined cycle |
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| CN210801685U true CN210801685U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060891A (en) * | 2021-11-10 | 2022-02-18 | 国网综合能源服务集团有限公司 | Biomass electric heating gas recycling system |
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2019
- 2019-09-30 CN CN201921652989.9U patent/CN210801685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060891A (en) * | 2021-11-10 | 2022-02-18 | 国网综合能源服务集团有限公司 | Biomass electric heating gas recycling system |
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Granted publication date: 20200619 Termination date: 20210930 |