CN114963604A - Compressed air energy storage air inlet treatment system utilizing compressed air waste heat - Google Patents
Compressed air energy storage air inlet treatment system utilizing compressed air waste heat Download PDFInfo
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- CN114963604A CN114963604A CN202210902102.7A CN202210902102A CN114963604A CN 114963604 A CN114963604 A CN 114963604A CN 202210902102 A CN202210902102 A CN 202210902102A CN 114963604 A CN114963604 A CN 114963604A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Physics & Mathematics (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a compressed air energy storage air inlet treatment system utilizing compressed air waste heat. The technical scheme of the invention is as follows: the system comprises: the cooling heat exchange box is arranged on the compressed air energy storage air inlet pipeline in front of the compressor and is used for exchanging heat with air in the compressed air energy storage air inlet pipeline through chilled water in the cooling heat exchange box, reducing the temperature of the air and condensing water in the air; the hot water type lithium bromide refrigerating unit is communicated with the cooling heat exchange box through a pipeline and is used for providing low-temperature chilled water for the cooling heat exchange box; and the waste heat recovery device is arranged on a compressed air energy storage air inlet pipeline behind the compressor, is communicated with the hot water type lithium bromide refrigerating unit through a pipeline, and is used for exchanging heat with high-temperature compressed air in the compressed air energy storage air inlet pipeline through circulating water in the waste heat recovery device to heat the circulating water to form high-temperature hot water and provide the high-temperature hot water for the hot water type lithium bromide refrigerating unit. The invention is suitable for the technical field of compressed air energy storage.
Description
Technical Field
The invention relates to a compressed air energy storage air inlet treatment system utilizing compressed air waste heat. The method is suitable for the technical field of compressed air energy storage.
Background
Compressed air energy storage is used as an energy storage system capable of realizing large-capacity and long-time electric energy storage, electricity which is not easy to store such as low ebb, wind energy and solar energy is used for the compressed air energy storage system, compressed high-pressure air is sealed in air storage equipment and is released to be converted into electric energy when needed. The compressed air energy storage has the advantages of large installed capacity, flexible station layout, short construction period, environmental friendliness, characteristics of an alternating current synchronous generator and the like, and is a novel energy storage technology which can be compared favorably with pumped storage. The compressed air energy storage has a prominent advantage in some areas widely without natural conditions of equipment pumped storage power stations in China, and large wind power plants and solar power plants far away from consumption centers. In new power systems, compressed air energy storage power stations play an important role in peak shaving, frequency modulation, provision of moment of inertia and rotational redundancy.
The medium selected for compressed air energy storage is air on the earth, the air has compressibility, and the air volume is reduced and the pressure is increased by applying work through an air compressor. Compressed air has the following distinct characteristics: the fire-resistant composite material is clear and transparent, convenient to convey, free of special harmful performance, free of fire danger and overload, and inexhaustible at everywhere on the ground. Among them, impurities and moisture in the air are important factors affecting the efficiency of the compressed air, and at present, the impurities in the air can be removed through an air filter, but the moisture is difficult to remove by means of conventional filtering measures. Air is a compressible medium and water is an incompressible medium, and moisture in air affects volumetric efficiency. Excessive moisture in the air reduces the dry air contained in the unit volume of air, which can result in insufficient gas production of the air compressor. The water content in the air directly influences the energy storage efficiency of the compressed air, so that a compression channel in the unit is narrowed, and the power consumption of compression is increased. The water in the air can corrode the circulation surface of the compressor, and the service life of the unit is shortened; after the water is mixed with the lubricating oil of the unit in the compression process, the lubricating performance is reduced, the deterioration of the lubricating oil is accelerated, and the abrasion of a sealing part is increased, so that poor sealing is caused.
Counting according to related data: the air moisture content at 10 ℃ was 7.733g/kg and the air moisture content at 20 ℃ was 14.897g/kg at the same relative humidity of 100%. The power consumption of air compressed at 20 ℃ is increased by 2 percent compared with that compressed at 10 ℃ under the unit volume. Therefore, the air inlet temperature is reduced under the same air humidity, the power consumption of the compressed air energy storage unit can be saved, and the service life of the unit is prolonged.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the existing problems, the compressed air energy storage air inlet treatment system utilizing the waste heat of the compressed air is provided.
The technical scheme adopted by the invention is as follows: a compressed air energy storage air inlet treatment system utilizing waste heat of compressed air is characterized by comprising:
the cooling heat exchange box is arranged on a compressed air energy storage air inlet pipeline in front of the compressor and is used for exchanging heat with air in the compressed air energy storage air inlet pipeline through chilled water in the cooling heat exchange box, reducing the temperature of the air and condensing water in the air;
the hot water type lithium bromide refrigerating unit is communicated with the cooling heat exchange box through a pipeline and is used for providing low-temperature chilled water for the cooling heat exchange box;
and the waste heat recovery device is arranged on a compressed air energy storage air inlet pipeline behind the compressor, is communicated with the hot water type lithium bromide refrigerating unit through a pipeline, and is used for exchanging heat with high-temperature compressed air in the compressed air energy storage air inlet pipeline through circulating water in the waste heat recovery device to heat the circulating water to form high-temperature hot water and provide the high-temperature hot water for the hot water type lithium bromide refrigerating unit.
The waste heat recovery device comprises a high-temperature heat exchanger and a heat storage tank, wherein a primary side of the high-temperature heat exchanger is communicated with a compressed air energy storage air inlet pipeline, a water outlet of a secondary side of the high-temperature heat exchanger is communicated with the heat storage tank through a pipeline and is communicated with a hot water inlet of the hot water type lithium bromide refrigerating unit through the heat storage tank, and a hot water outlet of the hot water type lithium bromide refrigerating unit is communicated with a water inlet of the secondary side of the high-temperature heat exchanger through a high-temperature water pump.
The cooling heat exchange box is provided with a box body, and the left end and the right end of the box body are respectively provided with an air inlet and an air outlet; a water distribution disc communicated with a water inlet on the box body and a chilled water collection disc communicated with a water outlet on the box body are respectively arranged at the upper part and the lower part of the box body, and a plurality of heat exchange tube sets communicated with the water distribution disc and the chilled water collection disc are arranged in the box body; and a condensed water recovery disc communicated with a condensed water outlet on the box body is arranged at the bottom in the box body.
And a liquid guide groove is formed on the outer surface of the heat exchange tube group.
The cooling heat exchange box is connected into the compressed air energy storage air inlet pipeline through an air inlet and an air outlet on the cooling heat exchange box, a water outlet of the cooling heat exchange box is communicated with a chilled water inlet on the hot water type lithium bromide refrigerating unit through a chilled water tank and a chilled water circulating pump in sequence through pipelines, and a chilled water outlet on the hot water type lithium bromide refrigerating unit is communicated with a water inlet of the cooling heat exchange box through a pipeline.
And a condensed water outlet of the cooling heat exchange box is communicated with the freezing water tank through a condensed water filter and a condensed water inlet valve in sequence through pipelines.
Further comprising:
and the secondary cooling device is arranged on a compressed air energy storage air inlet pipeline behind the compressor and used for cooling the circulating water in the ventilating device and the compressed air cooled by the waste heat recovery device again.
The secondary cooling device comprises a low-temperature heat exchanger and a cooling tower, wherein the primary side of the low-temperature heat exchanger is communicated with the compressed air energy storage air inlet pipeline, and the secondary side of the low-temperature heat exchanger is sequentially communicated with the cooling tower and the low-temperature circulating water pump through pipelines.
The cooling tower is communicated with the hot water type lithium bromide refrigerating unit through a pipeline, and the cooling water in the cooling tower is cooled through the hot water type lithium bromide refrigerating unit.
And the pipelines of the secondary cooling device and the waste heat recovery device are communicated through a high-low temperature switching valve.
The invention has the beneficial effects that: the invention utilizes the energy storage waste heat of the compressed air to refrigerate by matching the hot water type lithium bromide refrigerating unit with the waste heat recovery device, reduces the temperature of the chilled water, and reduces the temperature of the air by inputting the chilled water into the cooling heat exchange box to be mixed with the air in the cooling heat exchange box, and condenses the water in the air, thereby realizing the high-efficiency dehydration of the inlet air. The compressed air energy storage and air intake energy-saving system does not consume external energy, is safe and reliable, has a simple structure, is easy to manufacture, and is suitable for various compressed air energy storage systems.
Drawings
Fig. 1 is a schematic structural diagram of the system according to the embodiment.
Fig. 2 is a schematic diagram of the result of the waste heat recovery device in the embodiment.
Fig. 3 is a schematic peripheral structure diagram of a hot water type lithium bromide refrigeration unit in the embodiment.
Fig. 4 is a schematic peripheral structural diagram of the cooling heat exchange box in the embodiment.
FIG. 5 is a schematic diagram of the structure of the condensate recovery in the embodiment.
Fig. 6 is a schematic structural diagram of a cooling heat exchange box in the embodiment.
Fig. 7, 8, 9 and 10 are enlarged views of structures A, B, C and D in fig. 1, respectively.
In the figure: 1. a water inlet cut-off valve of the high-temperature heat exchanger; 2. a high temperature heat exchanger; 3. a water outlet cut-off valve of the high-temperature heat exchanger; 4. a water inlet cut-off valve of the heat storage tank; 5. a water inlet filter of the heat storage tank; 6. a heat storage tank; 7. a heat storage tank water outlet check valve; 8. a water outlet regulating valve of the heat storage tank; 9. a water outlet cut-off valve of the heat storage tank; 10. a water inlet cut-off valve of the low-temperature heat exchanger; 11. a low temperature heat exchanger; 12. a water outlet cut-off valve of the low-temperature heat exchanger; 13. a cooling tower; 14. a water inlet cut-off valve of the low-temperature circulating water pump; 15. an inlet filter of the low-temperature circulating water pump; 16. a low-temperature circulating water pump; 17. a low-temperature circulating water pump water outlet check valve; 18. a low-temperature circulating water pump cut-off valve; 19. a high and low temperature switching valve; 20. a hot water inlet cut-off valve of the lithium bromide refrigerating unit; 21. a hot water inlet filter of the lithium bromide refrigerating unit; 22. a hot water type lithium bromide refrigerating unit; 23. a hot water outlet check valve of the lithium bromide refrigerating unit; 24. a hot water outlet cut-off valve of the lithium bromide refrigerating unit; 25. an inlet cut-off valve of the high-temperature water pump; 26. an inlet filter of the high-temperature water pump; 27. a high-temperature water pump; 28. a high temperature water pump outlet check valve; 29. a high-temperature water pump outlet cut-off valve; 30. a cooling liquid inlet filter of the lithium bromide refrigerating unit; 31. a lithium bromide refrigerating unit cooling liquid inlet cut-off valve; 32. a check valve at a cooling liquid outlet of the lithium bromide refrigerating unit; 33. a coolant outlet cut-off valve of the lithium bromide refrigerating unit; 34. a cooling water inlet cut-off valve of the lithium bromide refrigerating unit; 35. a cooling water outlet cut-off valve of the lithium bromide refrigerating unit; 36. the heat exchange unit comprises a cooling heat exchange box inlet cut-off valve; 37. a cooling heat exchange box; 38. a chilled water inlet stop valve of the chilled water tank; 39. a freezing water tank; 40. an inlet valve of a chilled water circulating pump; 41. an inlet filter of a chilled water circulating pump; 42. a chilled water circulation pump; 43. an outlet check valve of the chilled water circulating pump; 44. an outlet cut-off valve of the chilled water circulating pump; 45. the condensed water recovery unit comprises a condensed water filter; 46. a condensed water inlet valve.
Detailed Description
The embodiment is a compressed air energy storage air inlet treatment system utilizing compressed air waste heat, and is used for removing air inlet moisture of a compressed air energy storage air inlet pipeline, wherein the compressed air energy storage air inlet pipeline comprises an air filter, a compressor and an air storage tank which are communicated with each other through pipelines in sequence along an air conveying direction.
The compressed air energy storage air inlet treatment system in the embodiment comprises a cooling heat exchange box, a hot water type lithium bromide refrigerating unit, a waste heat recovery device, a secondary cooling device and the like.
In the embodiment, the cooling heat exchange box is provided with a box body, and the left end and the right end of the box body are respectively provided with an air inlet and an air outlet which are communicated with a cavity in the box body; the upper end and the lower end of the box body are respectively provided with a water inlet and a water outlet, the upper end and the lower end of the box body are respectively provided with a water distribution disc communicated with the water inlet and a chilled water collecting disc communicated with the water outlet, a plurality of heat exchange tube groups communicated with the water distribution disc and the chilled water collecting disc are arranged in a cavity in the box body, and the outer surfaces of the heat exchange tube groups are provided with liquid guide grooves; and a condensed water recovery disc communicated with a condensed water outlet on the box body is arranged at the bottom of the cavity in the box body.
In this embodiment, the cooling heat exchange box is connected to a pipeline between the air filter and the compressor through the air inlet and the air outlet, and is used for exchanging heat between chilled water flowing through the heat exchange tube set and air flowing into the cavity inside the pressure box body, so as to reduce the air temperature and condense water in the air.
The hot water type lithium bromide refrigerating unit is used for preparing low-temperature chilled water for the cooling heat exchange box, and a chilled water outlet on the hot water type lithium bromide refrigerating unit is communicated with a water inlet at the top end of the cooling heat exchange box through a cooling liquid inlet filter of the lithium bromide refrigerating unit, a cooling liquid inlet stop valve of the lithium bromide refrigerating unit and an inlet stop valve of the cooling heat exchange box in sequence through pipelines.
In the embodiment, the water outlet at the lower end of the cooling heat exchange box is communicated with the freezing water tank through a pipeline and a freezing water inlet stop valve of the freezing water tank, and the condensed water outlet at the lower end of the cooling heat exchange box is communicated with the freezing water tank through a condensed water filter and a condensed water inlet valve in sequence through pipelines. The freezing water tank is communicated with a freezing water inlet on the hot water type lithium bromide refrigerating unit through a freezing water pressurizing module, a lithium bromide refrigerating unit cooling liquid outlet stop valve and a lithium bromide refrigerating unit cooling liquid outlet check valve.
The chilled water pressurizing module in the embodiment is provided with two chilled water pressurizing branches which are connected in parallel, and a chilled water circulating pump inlet valve, a chilled water circulating pump inlet filter, a chilled water circulating pump outlet check valve and a chilled water circulating pump outlet cut-off valve are sequentially arranged on the chilled water pressurizing branches.
Waste heat recovery device high temperature heat exchanger and heat storage tank in this embodiment, wherein high temperature heat exchanger's primary side connects on the pipeline between compressor and the gas holder, the delivery port of high temperature heat exchanger secondary side passes through the pipeline in proper order through high temperature heat exchanger water outlet trip valve, heat storage tank water inlet trip valve and heat storage tank water inlet filter intercommunication heat storage tank water inlet, the delivery port of heat storage tank passes through the pipeline in proper order through heat storage tank water outlet check valve, heat storage tank water outlet regulating valve, heat storage tank water outlet trip valve, lithium bromide refrigerating unit hot water import trip valve and lithium bromide refrigerating unit hot water import filter intercommunication hot water type lithium bromide refrigerating unit's hot water inlet, provide hot water for hot water type lithium bromide refrigerating unit and refrigerate.
In the embodiment, a hot water outlet of the hot water type lithium bromide refrigerating unit is communicated with a secondary side water inlet of the high-temperature heat exchanger through a hot water outlet check valve of the lithium bromide refrigerating unit, a hot water outlet stop valve of the lithium bromide refrigerating unit, a hot water pressurizing module and a water inlet stop valve of the high-temperature heat exchanger in sequence through pipelines.
The hot water pressurizing module in this embodiment is provided with two hot water pressurizing branches which are connected in parallel, and a high-temperature water pump inlet stop valve, a high-temperature water pump inlet filter, a high-temperature water pump outlet check valve and a high-temperature water pump outlet stop valve are sequentially arranged on the hot water pressurizing branches.
The secondary cooling device comprises a low-temperature heat exchanger and a cooling tower, wherein the primary side of the low-temperature heat exchanger is connected to a pipeline between the high-temperature heat exchanger and the air storage tank, the water outlet of the secondary side of the low-temperature heat exchanger is communicated with the water inlet of the cooling tower through a pipeline and a water outlet cut-off valve of the low-temperature heat exchanger, and the water outlet of the cooling tower is communicated with the water inlet of the secondary side of the low-temperature heat exchanger through a pipeline sequentially by a low-temperature circulating water pressurizing module and a water inlet cut-off valve of the low-temperature heat exchanger.
The low-temperature circulating water pressurizing module in the embodiment is provided with two low-temperature circulating water pressurizing branches which are connected in parallel, and a low-temperature circulating water pump water inlet cut-off valve, a low-temperature circulating water pump inlet filter, a low-temperature circulating water pump water outlet check valve and a low-temperature circulating water pump cut-off valve are sequentially arranged on the low-temperature circulating water pressurizing branches.
In the embodiment, the cooling tower is communicated with the hot water type lithium bromide refrigerating unit, the hot water type lithium bromide refrigerating unit is used for refrigerating the cooling circulating water in the cooling tower, and the cooling circulating water exchanges heat with low-temperature circulating water in the cooling tower to reduce the temperature of the low-temperature circulating water.
In the embodiment, the pipeline between the low-temperature circulating water pressurizing module and the low-temperature heat exchanger water outlet stop valve is communicated with the pipeline between the high-temperature heat exchanger water outlet stop valve and the heat storage tank water inlet stop valve through the high-low temperature switching valve. When the outlet water temperature of the high-temperature heat exchanger can not meet the temperature requirement of the hot water type lithium bromide refrigerating unit, the outlet water of the high-temperature heat exchanger is discharged to a pipeline of the low-temperature heat exchanger through the high-low temperature switching valve.
The working principle of the embodiment is as follows: high-temperature circulating water enters the high-temperature heat exchanger through the high-temperature heat exchanger water inlet stop valve, exchanges heat with high-temperature compressed air to 98 ℃, and then is sent to the heat storage tank for storage after passing through the high-temperature heat exchanger water outlet stop valve, the heat storage tank water inlet stop valve and the heat storage tank water inlet filter.
High-temperature circulating hot water is supplied to a hot water type lithium bromide refrigerating unit for refrigeration from a heat storage tank, the hot water enters the lithium bromide refrigerating unit through a hot water inlet stop valve of the lithium bromide refrigerating unit and a hot water inlet filter of the lithium bromide refrigerating unit, the high-temperature circulating hot water after acting enters a circulating pressurization module through a hot water outlet check valve of the lithium bromide refrigerating unit and a hot water outlet stop valve of the lithium bromide refrigerating unit, the hot water enters a high-temperature water pump for pressurization through a high-temperature water pump inlet stop valve and a high-temperature water pump inlet filter, and the pressurized high-temperature circulating hot water enters a high-temperature heat exchanger for circulating heating again after passing through a high-temperature water pump outlet check valve and a high-temperature water pump outlet stop valve.
After the 15 ℃ chilled water is cooled to 10 ℃ by a hot water type lithium bromide refrigerating unit, the chilled water enters a cooling heat exchange box through a lithium bromide refrigerating unit cooling liquid inlet filter, a lithium bromide refrigerating unit cooling liquid inlet stop valve and a cooling heat exchange box inlet stop valve.
Chilled water enters a water distribution disc of the cooling heat exchange box and is uniformly distributed to each heat exchange tube group, the heat exchange tube groups are arranged in a staggered mode in a multilayer mode and filtered to obtain clean air for heat exchange, the air temperature is reduced, and condensate water in the air is collected to a condensate water recovery disc along a liquid guide groove in the outer surface of each heat exchange tube group. After the chilled water in the heat exchange pipe exchanges heat, the chilled water converges to the chilled water collecting tray and enters the chilled water tank (39) through the chilled water inlet stop valve of the chilled water tank. Condensed water in the air is collected by the condensed water recovery disc and then is used as the water supplement of the chilled water, and the chilled water enters the chilled water tank through the condensed water filter and the condensed water inlet valve.
Chilled water in the chilled water tank enters the chilled water circulating pump through a chilled water circulating pump inlet valve and a chilled water circulating pump inlet filter for pressurization, and the pressurized chilled water enters the hot water type lithium bromide refrigerating unit for refrigeration and cooling through a chilled water circulating pump outlet check valve and a chilled water circulating pump outlet cut-off valve.
The low-temperature circulating water enters the low-temperature heat exchanger through the low-temperature heat exchanger water inlet stop valve, the compressed air is cooled to 20 ℃, the compressed air enters the air storage tank for storage, the low-temperature circulating water enters the cooling tower through the low-temperature heat exchanger water outlet stop valve and is cooled to normal temperature, the low-temperature circulating water enters the low-temperature circulating water pump through the low-temperature circulating water pump water inlet stop valve and the low-temperature circulating water pump inlet filter and is pressurized, and the pressurized low-temperature circulating water enters the low-temperature heat exchanger again through the low-temperature circulating water pump water outlet check valve and the low-temperature circulating water pump stop valve for circulating heat exchange and cooling.
In this embodiment, the compressed air at the end of the compressed air energy storage is cooled to 20 ℃ through the heat exchanger and then enters the high-pressure air storage tank, the heat carried by the low-temperature heat exchanger is dissipated to the atmosphere through the cooling tower, and the energy of the part is not recovered. In the embodiment, a step heat exchange mode is adopted to recover a high-temperature heat source, the heat exchanger is changed into a two-section heat exchanger, the high-temperature heat exchanger recovers the high-temperature heat source, and hot water at 98 ℃ is prepared and used for refrigerating the hot water type lithium bromide refrigerating unit; the low-temperature heat exchanger recovers medium and low temperature heat in the compressed air, discharges the medium and low temperature heat to the atmosphere or recycles the medium and low temperature heat, and the waste heat carried by the compressed air is utilized to the maximum extent through stepped heat exchange, so that the energy waste is reduced.
Claims (10)
1. A compressed air energy storage air inlet treatment system utilizing waste heat of compressed air is characterized by comprising:
the cooling heat exchange box is arranged on the compressed air energy storage air inlet pipeline in front of the compressor and is used for exchanging heat with air in the compressed air energy storage air inlet pipeline through chilled water in the cooling heat exchange box, reducing the temperature of the air and condensing water in the air;
the hot water type lithium bromide refrigerating unit is communicated with the cooling heat exchange box through a pipeline and is used for providing low-temperature chilled water for the cooling heat exchange box;
and the waste heat recovery device is arranged on a compressed air energy storage air inlet pipeline behind the compressor, is communicated with the hot water type lithium bromide refrigerating unit through a pipeline, and is used for exchanging heat with high-temperature compressed air in the compressed air energy storage air inlet pipeline through circulating water in the waste heat recovery device to heat the circulating water to form high-temperature hot water and provide the high-temperature hot water for the hot water type lithium bromide refrigerating unit.
2. The compressed air energy-storage air-intake processing system using the waste heat of the compressed air according to claim 1, characterized in that: the waste heat recovery device comprises a high-temperature heat exchanger and a heat storage tank, wherein a primary side of the high-temperature heat exchanger is communicated with a compressed air energy storage air inlet pipeline, a water outlet of a secondary side of the high-temperature heat exchanger is communicated with the heat storage tank through a pipeline and is communicated with a hot water inlet of the hot water type lithium bromide refrigerating unit through the heat storage tank, and a hot water outlet of the hot water type lithium bromide refrigerating unit is communicated with a water inlet of the secondary side of the high-temperature heat exchanger through a high-temperature water pump.
3. The compressed air energy-storage air-intake processing system using the waste heat of the compressed air according to claim 1, characterized in that: the cooling heat exchange box is provided with a box body, and the left end and the right end of the box body are respectively provided with an air inlet and an air outlet; a water distribution disc communicated with a water inlet on the box body and a chilled water collection disc communicated with a water outlet on the box body are respectively arranged at the upper part and the lower part of the box body, and a plurality of heat exchange tube sets communicated with the water distribution disc and the chilled water collection disc are arranged in the box body; and a condensed water recovery disc communicated with a condensed water outlet on the box body is arranged at the bottom in the box body.
4. The compressed air energy-storage air-intake processing system using the waste heat of compressed air according to claim 3, characterized in that: and a liquid guide groove is formed on the outer surface of the heat exchange tube group.
5. The compressed air energy-storage air-intake processing system using the waste heat of the compressed air according to claim 3 or 4, characterized in that: the cooling heat exchange box is connected into the compressed air energy storage air inlet pipeline through an air inlet and an air outlet on the cooling heat exchange box, a water outlet of the cooling heat exchange box is communicated with a chilled water inlet on the hot water type lithium bromide refrigerating unit through a chilled water tank and a chilled water circulating pump in sequence through pipelines, and a chilled water outlet on the hot water type lithium bromide refrigerating unit is communicated with a water inlet of the cooling heat exchange box through a pipeline.
6. The compressed air energy-storage air-intake processing system using the waste heat of the compressed air as claimed in claim 5, wherein: and a condensed water outlet of the cooling heat exchange box is communicated with the freezing water tank through a condensed water filter and a condensed water inlet valve in sequence through pipelines.
7. The compressed air energy-storage air-intake processing system using the waste heat of compressed air as claimed in claim 1, further comprising:
and the secondary cooling device is arranged on the compressed air energy storage air inlet pipeline behind the compressor and used for cooling the circulating water in the air and the compressed air cooled by the waste heat recovery device again on the compressed air energy storage air inlet pipeline.
8. The compressed air energy-storage air-intake processing system using the waste heat of the compressed air as claimed in claim 7, wherein the secondary cooling device comprises a low-temperature heat exchanger and a cooling tower, wherein the primary side of the low-temperature heat exchanger is communicated with the compressed air energy-storage air-intake pipeline, and the secondary side of the low-temperature heat exchanger is sequentially communicated with the cooling tower and the low-temperature circulating water pump through pipelines.
9. The compressed air energy-storage air-intake processing system using the waste heat of compressed air as claimed in claim 8, wherein the cooling tower is communicated with the hot water type lithium bromide refrigerating unit through a pipeline, and the cooling water in the cooling tower is cooled through the hot water type lithium bromide refrigerating unit.
10. The compressed air energy-storage air-intake processing system using the waste heat of compressed air as claimed in claim 7, wherein the pipelines of the secondary cooling device and the waste heat recovery device are communicated through a high-temperature and low-temperature switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902102.7A CN114963604B (en) | 2022-07-29 | 2022-07-29 | Compressed air energy storage air inlet treatment system utilizing compressed air waste heat |
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Cited By (1)
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| CN116202128A (en) * | 2023-02-23 | 2023-06-02 | 中国电建集团河北省电力勘测设计研究院有限公司 | Method for heating by utilizing compressed air energy storage compression heat waste heat |
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| CN114963604B (en) | 2022-10-21 |
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