CN110374839A - A kind of liquefied air energy-storage system and method using pressurised liquid propane cold-storage - Google Patents
A kind of liquefied air energy-storage system and method using pressurised liquid propane cold-storage Download PDFInfo
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- CN110374839A CN110374839A CN201910692165.2A CN201910692165A CN110374839A CN 110374839 A CN110374839 A CN 110374839A CN 201910692165 A CN201910692165 A CN 201910692165A CN 110374839 A CN110374839 A CN 110374839A
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- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000001294 propane Substances 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 title claims abstract description 52
- 238000004146 energy storage Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010248 power generation Methods 0.000 claims abstract description 36
- 238000011084 recovery Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000009825 accumulation Methods 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000002309 gasification Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000005338 heat storage Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000005482 strain hardening Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
-
- 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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- 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
-
- 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
-
- 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
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The present invention provides a kind of liquefied air energy-storage systems using pressurised liquid propane cold-storage, belong to field of renewable energy technology.System includes air compression and heat recovery system, air liquefaction system, air expansion power generation system and pressurised liquid propane cold accumulation system.When energy storage, air is stored in compression hot tank through overcompression and by the heat of compression of generation, and pressure-air is subsequently sent to air liquefaction system, and the cold energy stored in propane deep cooling tank is made full use of to cool down.When releasing energy, it will be heated up after the pressurized pump pressurization of liquid air by gasifier gasification, cold energy therein is by propane recovery and is stored in pressurised liquid propane tank.Using pressurised liquid propane as cold-storage working substance, process of cool is not undergone phase transition, and cold-storage working substance density is high, and system footprint area is greatly decreased, and has many advantages, such as that system cold energy loses small, fast response time.
Description
Technical field
The present invention relates to a kind of liquefied air energy-storage systems and method using pressurised liquid propane cold-storage, belong to renewable
Energy technology field.
Background technique
In existing energy storage technology, compressed-air energy storage be in addition to water-storage, it is currently the only can be realized it is extensive
The physics energy storage technology of power grid storage, compressed air energy storage technology can not only be applied to the storage of renewable energy, can also use
In the peak-valley difference for solving the problems, such as power grid.
Traditional compressed-air energy storage, which is compressed air using compressor, enters large-scale grotto storage, can utilize in the stage releasing
Combustion of fossil fuel reheating to expansion work, be suitble to large scale system and it is at low cost, the service life is long, but the disadvantage is that building site
It is limited, and burn and pollute dependent on fossil energy.
Liquefied air energy-storage system (LAES) is to store air with liquid normal pressure or low pressure, not only substantially increases energy storage
Density, while system Construction cost and occupied area is also greatly reduced.Liquefied air energy-storage system combines air liquefaction subsystem
System, energy storage subsystem and expansion power generation subsystem: when energy storage, electric energy is by air multi-stage compression, cooling and liquefies, while storing should
The thermal energy discharged in the process, the thermal energy heat air when can be used for releasing energy；When releasing energy, liquid air is pressurized, gasifies, and pushes swollen
Swollen generating set power generation, while the cold energy of the gasification is recycled, it is used for cooling air when energy storage.
In terms of cold energy recycle, those skilled in the art are usually using packed bed cold-storage at present.Utilize normal temperature air
The cold energy of gasification passes to the rock or sandstone of packed bed, when liquefaction recycles normal temperature air to take the cold of packed bed out of
Energy.The cold-storage method using air as the intermediate medium of cooling capacity directional transmissions, release cold energy process and ring by higher, storage that there are cold energy losses
The problems such as temperature deviation is big in slow, packed bed is answered, is not able to satisfy extensive, high efficiency, the demand of reliability energy storage, is badly in need of exploitation
More efficient, the faster cold accumulation system of response.
Summary of the invention
The purpose of the present invention is the deficiency to solve cold accumulation system in current liquefied air energy-storage system, urgent need develops one kind
More efficient, the faster cold accumulation system of response.
To achieve the purpose that solve the above problems, the technical solution adopted by the present invention is that providing a kind of using pressurised liquid
The liquefied air energy-storage system of propane cold-storage, including air compression and heat recovery system, air liquefaction system and air expansion hair
Electric system；It is characterized by also including pressurised liquid propane cold accumulation systems, for storing up in gaseous air and liquid air conversion
Deposit or discharge cold energy；Air liquefaction system is equipped between air compression and heat recovery system and air expansion power generation system；Air
Pressurised liquid propane cold accumulation system is equipped between liquefaction system and air expansion power generation system.
Preferably, air compression and heat recovery system include air cleaning facility, compressor and driving equipment, heat
Reclaimer, recuperation of heat working medium room temperature tank and recuperation of heat working medium heat storage can；The air cleaning facility and heat recovery equipment it
Between be equipped with compressor and driving equipment；The recuperation of heat working medium heat storage can connects expansion power generator by hot working fluid pipeline one end
Reheater in group, the other end connect heat recovery equipment；The recuperation of heat working medium room temperature tank is connected by hot working fluid pipeline one end
The reheater in expansion power generation unit is connect, the other end connects heat recovery equipment.
Preferably, the air liquefaction system is made of conventional air liquefying apparatus；The air liquefying apparatus
Including liquid air storage tank, described air liquefying apparatus one end connects heat recovery equipment, and the other end connects force (forcing) pump.
Preferably, the air expansion power generation system includes force (forcing) pump, gasifier and expansion power generation unit；Force (forcing) pump and
Gasifier is equipped between expansion power generation unit.
Preferably, the pressurised liquid propane cold accumulation system includes propane room temperature tank and propane deep cooling tank；Described third
Alkane room temperature tank connects gasifier by cold working medium pipeline one end, and the other end connects air liquefying apparatus；The propane deep cooling tank
Gasifier is connected by cold working medium pipeline one end, the other end connects air liquefying apparatus.
Preferably, the recuperation of heat working medium uses pressure (hydraulic) water or normal pressure conduction oil.
Preferably, the cold working medium uses propane.
Preferably, it is equipped with reheater in the expansion power generation unit, is equipped with hot working fluid pipeline in reheater.
The present invention also provides a kind of methods of liquefied air energy storage using pressurised liquid propane cold-storage, which is characterized in that
Include the following steps:
Step 1: air enters compressor and driving equipment after air cleaning facility purifies, and is pressurized to 3-6MPa.
Step 2: compressed air exchanges heat through heat recovery equipment with the working medium from recuperation of heat working medium room temperature tank again to cool down, working medium
Be stored in after heating in recuperation of heat working medium heat storage can, heat accumulation working medium is normal pressure conduction oil or pressure (hydraulic) water, 240 DEG C of heat accumulation temperature with
On.
Step 3: the pressure-air after cooling further cools down using air liquefying apparatus to be liquefied and is stored in liquid
In air reservoir, the process of energy storage is completed.
Step 4: when releasing energy, the pressurized pump of liquid air is sent into gasifier heat absorption of gasifying after improving pressure to 8-14MPa；
The heat release in gasifier of the pressurised liquid propane of room temperature is cooled to -150 DEG C hereinafter, and being stored in third in propane room temperature tank simultaneously
In alkane deep cooling tank, the propane of deep cooling is used further to air liquefying apparatus in energy storage stage cooling air；Cold accumulation system is in when running
Pressurized state, pressure is between 1MPa-1.5Mpa.
Step 5: the air after gasification generates electricity using expansion power generation unit, at different levels setting reheating of expansion power generation unit
Device, using the recuperation of heat working medium heating air in recuperation of heat working medium heat storage can to 200 DEG C or more, to improve generating efficiency, most
About 40-80 DEG C of whole delivery temperature, recuperation of heat working medium room temperature tank is returned to after hot working fluid cooling.
Compared with prior art, the invention has the following beneficial effects:
1. the present invention is using pressurised liquid propane as cold-storage working substance, process of cool is not undergone phase transition, cold-storage working substance density
System footprint area can be greatly decreased in height；
2. pressurised liquid propane is used as the heat transferring medium of cold accumulation system simultaneously in the present invention, filled out with used by current technology
Filling a cold-storage and comparing has many advantages, such as that system cold energy loses small, fast response time.
Detailed description of the invention
Fig. 1 is that a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage provided by the invention forms signal
Figure.
Appended drawing reference: 4. recuperation of heat working medium of 1. air cleaning facility, 2. compressor and 3. heat recovery equipment of driving equipment
5. 8. gasifier of recuperation of heat working medium heat storage can 6. air liquefying apparatus, 7. force (forcing) pump of room temperature tank, 9. expansion power generation unit 10.
11. propane deep cooling tank of propane room temperature tank
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below；
As shown in Figure 1, the present invention provides a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage, comprising:
Air compression and heat recovery system, air liquefaction system, air expansion power generation system and pressurised liquid propane cold accumulation system.Air
Air liquefaction system is equipped between compression and heat recovery system and air expansion power generation system；Air liquefaction system and air expansion
Pressurised liquid propane cold accumulation system is equipped between electricity generation system.
Air compression and heat recovery system include air cleaning facility 1, compressor and driving equipment 2, heat recovery equipment 3,
Recuperation of heat working medium room temperature tank 4 and recuperation of heat working medium heat storage can 5；Compressor is equipped between air cleaning facility 1 and heat recovery equipment 3
And driving equipment 2；Recuperation of heat working medium heat storage can 5 connects the reheater in expansion power generation unit 9 by hot working fluid pipeline one end, separately
One end connects heat recovery equipment 3；Recuperation of heat working medium room temperature tank 4 is connected in expansion power generation unit 9 by hot working fluid pipeline one end
Reheater, the other end connect heat recovery equipment 3.Air compression and heat recovery system are used for air pressurized, and by compression process
The heat collection of generation stores, for heating air when releasing energy；Air cleaning facility 1 purifies air；Compressor and
Driving equipment 2 compresses air；Heat recovery equipment 3 utilizes recuperation of heat working medium by high temperature and pressure air cooling-down.Recuperation of heat work
Matter uses pressure (hydraulic) water or normal pressure conduction oil, and the working medium after room temperature and heating is stored in recuperation of heat working medium room temperature tank 4 and heat respectively
It recycles in working medium heat storage can 5, the conveying of working medium is realized by pump.Air liquefaction system is made of conventional air liquefying apparatus 6,
For converting liquid air for the gaseous air of input.Air liquefying apparatus 6 includes liquid air storage tank, air liquefying apparatus
6 one end connect heat recovery equipment 3, and the other end connects force (forcing) pump 7.Air expansion power generation system includes force (forcing) pump 7,8 and of gasifier
Expansion power generation unit 9；Gasifier 8 is equipped between force (forcing) pump 7 and expansion power generation unit 9；Air expansion power generation system is used for liquid
It generates electricity after state air pressurized, gasification；Force (forcing) pump 7 pressurizes liquefied air, then liquefied air endothermic gasification liter in gasifier 8
Temperature enters back into the acting power generation of expansion power generation unit 9.Pressurised liquid propane cold accumulation system includes propane deep cooling tank 11 and third
Alkane room temperature tank 10；Propane room temperature tank 10 connects gasifier 8 by cold working medium pipeline one end, and the other end connects air liquefying apparatus 6；
The propane deep cooling tank 11 connects gasifier 8 by cold working medium pipeline one end, and the other end connects air liquefying apparatus 6.Cold-storage
Working medium is LPG, and when operation is in pressurized state, and it is normal that the working medium after room temperature and cooling is stored in the propane respectively
Warm tank 10 and propane deep cooling tank 11 realize the conveying of working medium by pump, for storing in gaseous air and liquid air conversion
Or release cold energy.Reheater is equipped in expansion power generation unit 9, reheater utilizes the heat in the recuperation of heat working medium heat storage can 5
It recycles working medium and heats air, the conveying of working medium is realized by pump.
Utilize the liquefied air energy-storage system workflow of pressurised liquid propane cold-storage are as follows:
When energy storage, air enters compressor and driving equipment 2 after air cleaning facility 1, after being pressurized to 6MPa, pressure
Contracting air exchanges heat through heat recovery equipment 3 with the working medium from recuperation of heat working medium room temperature tank 4 again to cool down, and is stored in heat after working medium heating
It recycles in working medium heat storage can 5, heat accumulation working medium is normal pressure conduction oil or pressure (hydraulic) water, and heat accumulation temperature is up to 250 DEG C.Height after cooling
Pressure air further cools down using air liquefying apparatus 6 and is liquefied and is stored in liquid air storage tank, storage temperature-
172 DEG C, pressure 0.7MPa.
Release can when, the pressurized pump 7 of liquid air is sent into gasifier 8 after improving pressure to 10MPa, in propane room temperature tank 10 about
The heat release in gasifier 8 of 20 DEG C of pressurised liquid propane is cooled to -150 DEG C and is stored in propane deep cooling tank 11, for sky
Gas liquefaction device 6 is in energy storage stage cooling air.Cold accumulation system run when be in pressurized state, pressure 1MPa-1.5Mpa it
Between.Air after gasification does work using expansion power generation unit 9 to generate electricity, and at different levels setting reheaters of expanding machine, uses recuperation of heat
Hot working fluid heating air in working medium heat storage can 5 is to about 220 DEG C, so that generating efficiency is improved, about 60 DEG C of final delivery temperature, heat
Recuperation of heat working medium room temperature tank 4 is returned to after working medium cooling.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the present invention, can also be made several for those skilled in the art
It improves and supplement, these improvement and supplement also should be regarded as protection scope of the present invention.All those skilled in the art, not
Be detached from the spirit and scope of the present invention in the case where, when a little change made using disclosed above technology contents,
Modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals according to the present invention are to above-mentioned
The variation, modification and evolution of any equivalent variations made by embodiment, in the range of still falling within technical solution of the present invention.
Claims (9)
1. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage, including air compression and heat recovery system, sky
Gas liquefaction system and air expansion power generation system；It is characterized by also including pressurised liquid propane cold accumulation systems, in gaseous state
Air and liquid air store when converting or release cold energy；Between air compression and heat recovery system and air expansion power generation system
Equipped with air liquefaction system；Pressurised liquid propane cold accumulation system is equipped between air liquefaction system and air expansion power generation system.
2. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as described in claim 1, it is characterised in that:
The air compression and heat recovery system include air cleaning facility (1), compressor and driving equipment (2), heat recovery equipment
(3), recuperation of heat working medium room temperature tank (4) and recuperation of heat working medium heat storage can (5)；The air cleaning facility (1) and recuperation of heat are set
Compressor and driving equipment (2) are equipped between standby (3)；The recuperation of heat working medium heat storage can (5) passes through hot working fluid pipeline one end
The reheater in expansion power generation unit (9) is connected, the other end connects heat recovery equipment (3)；The recuperation of heat working medium room temperature tank
(4) by the reheater in hot working fluid pipeline one end connection expansion power generation unit (9), the other end connects heat recovery equipment (3).
3. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as described in claim 1, it is characterised in that:
The air liquefaction system is made of conventional air liquefying apparatus (6)；The air liquefying apparatus (6) includes liquid sky
Gas storage tank, the air liquefying apparatus (6) one end connect heat recovery equipment (3), and the other end connects force (forcing) pump (7).
4. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as described in claim 1, it is characterised in that:
The air expansion power generation system includes force (forcing) pump (7), gasifier (8) and expansion power generation unit (9)；Force (forcing) pump (7) and swollen
Gasifier (8) are equipped between swollen generating set (9).
5. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as described in claim 1, it is characterised in that:
The pressurised liquid propane cold accumulation system includes propane room temperature tank (10) and propane deep cooling tank (11)；The propane room temperature tank
(10) gasifier (8) are connected by cold working medium pipeline one end, the other end connects air liquefying apparatus (6)；The propane deep cooling
Tank (11) connects gasifier (8) by cold working medium pipeline one end, and the other end connects air liquefying apparatus (6).
6. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as claimed in claim 2, it is characterised in that:
The recuperation of heat working medium uses pressure (hydraulic) water or normal pressure conduction oil.
7. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as claimed in claim 5, it is characterised in that:
The cold working medium uses propane.
8. a kind of liquefied air energy-storage system using pressurised liquid propane cold-storage as claimed in claim 4, it is characterised in that:
It is equipped with reheater in the expansion power generation unit (9), hot working fluid pipeline is equipped in reheater.
9. a kind of method of the liquefied air energy storage using pressurised liquid propane cold-storage, which comprises the steps of:
Step 1: air enters compressor and driving equipment (2) after cleaning equipment (1) purifies, and is pressurized to 3-6MPa.
Step 2: compressed air exchanges heat through heat recovery equipment (3) with the working medium from recuperation of heat working medium room temperature tank (4) again to cool down, work
It is stored in recuperation of heat working medium heat storage can (5) after matter heating, heat accumulation working medium is normal pressure conduction oil or pressure (hydraulic) water, heat accumulation temperature
240 DEG C or more.
Step 3: using air liquefying apparatus (6), further cooling is liquefied and is stored in liquid sky the pressure-air after cooling
In gas storage tank, the process of energy storage is completed.
Step 4: when releasing energy, the pressurized pump (7) of liquid air is sent into gasification suction in gasifier (8) after improving pressure to 8-14MPa
Heat；Simultaneously propane room temperature tank (10) interior room temperature pressurised liquid propane gasifier (8) interior heat release be cooled to -150 DEG C hereinafter,
And be stored in propane deep cooling tank (11), the propane of deep cooling is used further to air liquefying apparatus (6) in energy storage stage cooling air；It stores
Pressurized state is in when cooling system is run, pressure is between 1MPa-1.5Mpa.
Step 5: the air after gasification generates electricity using expansion power generation unit (9), is arranged again at expansion power generation unit (9) at different levels
Hot device, using the recuperation of heat working medium heating air in recuperation of heat working medium heat storage can (5) to 200 DEG C or more, to improve power generation effect
Rate, 40-80 DEG C of final delivery temperature return to recuperation of heat working medium room temperature tank (4) after hot working fluid cooling.
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