CN110319652A - A kind of air separation oxygenerator for energy storing-releasing - Google Patents

A kind of air separation oxygenerator for energy storing-releasing Download PDF

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Publication number
CN110319652A
CN110319652A CN201910556421.5A CN201910556421A CN110319652A CN 110319652 A CN110319652 A CN 110319652A CN 201910556421 A CN201910556421 A CN 201910556421A CN 110319652 A CN110319652 A CN 110319652A
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China
Prior art keywords
nitrogen
air
stage
energy
liquid
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CN110319652B (en
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苏苗印
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HANGZHOU HANGYANG CHEMICAL AND PHARMACEUTICAL ENGINEERING CO LTD
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HANGZHOU HANGYANG CHEMICAL AND PHARMACEUTICAL ENGINEERING CO LTD
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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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/04084—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • 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
    • F01K25/10—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 the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04024—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of purified feed air, so-called boosted air
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • F25J3/04181—Regenerating the adsorbents
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04472—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages
    • F25J3/04496—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F25J3/04575—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating for a gas expansion plant, e.g. dilution of the combustion gas in a gas turbine
    • F25J3/04581—Hot gas expansion of indirect heated nitrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0001—Separation or purification processing
    • C01B2210/0009—Physical processing
    • C01B2210/0014—Physical processing by adsorption in solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/42—Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention discloses a kind of air separation oxygenerators for energy storing-releasing, it is characterized by comprising air separation oxygenerators and nitrogen expansion power generator, by space division varying duty technology and liquid nitrogen energy storing and electricity generating technology, oxygen product is exported steadily in the long term, and exports electric energy in the Peak power use period.The beneficial effects of the present invention are: realizing energy storage equipment (air-separating plant) overall process continuous operation, the frequent startup-shutdown bring debugging consumption of equipment and failure risk are effectively reduced；Not only energy storing and electricity generating function had been met but also the oxygen product of high value can be obtained, and be a kind of efficiently energy storage technology with economy.

Description

A kind of air separation oxygenerator for energy storing-releasing
Technical field
The present invention relates to compressed air energy storage technology fields, and in particular to a kind of liquefied air storage in conjunction with air separation Energy technology, suitable for energy storing and electricity generating and exports oxygen product.
Background technique
Global energy supply problem faces lot of challenges, and increasing renewable energy power generation output becomes more urgent.At present Liquefied air energy storage technology (LAES) is used as a kind of attractive energy storage technology, and energy density is big and easily stored, effectively solves Certainly the problem of renewable energy power generation unstability.Liquefied air energy storage technology is using air as carrier, due to by system entirety The limitation of cycle efficieny considers the factors such as electricity price between peak and valley, there is a problem of that practical value is not high.
In practice, it will usually couple liquefied air energy storage device in external heating or cold supply system coproduction, such as Industrial waste heat and liquefied natural gas etc. improve entirety and use economic value.But specific use condition, which limits it, uses model It encloses, to seek better energy integrated, needs to seek a kind of highly efficient and economic solution out of system.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention proposes that a kind of air-separating oxygen-making for energy storing-releasing fills It sets, on the basis of existing air separation unit technology and liquefied air energy storage technology, using air separation unit varying duty technology, is with liquid nitrogen Mass transfer medium realizes energy storing and electricity generating, and the downstream steady reliable output products oxygen of user, substantially increases existing liquefied air The economic benefit of energy-storage system.
By using above-mentioned technology, compared with prior art, beneficial effects of the present invention are as follows:
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that swollen including air separation oxygenerator and nitrogen Swollen power generator；
The air separation oxygenerator, including air filter, air compressor machine, air conditioner, molecular sieve adsorber, electric heater, Supercharger, expansion supercharger, main heat exchanger, rectifying column, main condenser, liquid nitrogen storage and liquid oxygen storage tank；Air filter, pneumatics Machine, air conditioner, molecular sieve adsorber are sequentially connected, and the molecular sieve adsorber is equipped with two, wherein a molecular sieve adsorber It is connected with main heat exchanger, main heat exchanger is connected with the lower tower of rectifying column, and another molecular sieve adsorber is connected with supercharger, pressurization Machine is connected with expansion supercharger, and expansion supercharger is connected with the lower tower of rectifying column；The lower top of tower of the rectifying column is equipped with gas nitrogen Output pipe, gas nitrogen liquefy in main condenser and are output to liquid nitrogen storage, and the lower tower bottom of rectifying column is equipped with oxygen-enriched liquid air pipeline, Oxygen-enriched liquid air extraction is used as upper tower phegma；The upper tower bottom of rectifying column is set there are two liquid oxygen output pipe, and a part of liquid oxygen is sent Enter to liquid oxygen storage tank, another part liquid oxygen, which is gasified, is sent to main heat exchanger, the upper tower bottom nitrogen output pipe of rectifying column, nitrogen It is sent out after main heat exchanger re-heat；
The nitrogen expansion power generator, including liquid nitrogen force (forcing) pump, vaporizer, regenerator and expansion power generator, the liquid nitrogen storage The entrance of the outlet connection liquid nitrogen force (forcing) pump of slot, the entrance of the outlet connection vaporizer of the liquid nitrogen force (forcing) pump, the vaporizer Outlet be connected with expansion power generator, high pressure nitrogen from the outlet of vaporizer enter expansion power generator power generation；The regenerator with Vaporizer is connected, and liquid nitrogen gasification cooling capacity passes to regenerator, and the regenerator is connected with main heat exchanger.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that the air compressor machine and supercharger By frequency conversion or inlet guide vane realization varying duty is adjusted, in device energy storage stage heavy-duty service, it is low negative to release the energy stage in device Lotus operation.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that the air-separating oxygen-making dress All devices in setting can operate in high load capacity operating condition or running on the lower load.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that two molecular sieves absorption Device wherein a job when, another regeneration, the nitrogen of energy storage stage regeneration gas gas top of tower on rectifying column releases energy The nitrogen of nitrogen and expansion power generator final stage outlet of the regeneration gas gas in stage at the top of rectifier.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that the liquid oxygen storage tank plays flat Oxygen product output total amount effect of weighing is released energy stage output liquid oxygen in device, is made after summarizing in device energy storage stage storage liquid oxygen The oxygen product total amount of output remains stable always.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that the regenerator is in cooling capacity mistake Store cooling capacity when surplus, released cold quantity when cooling capacity shortage, balancing device is in energy storage stage or release can stage different refrigeration requirement.
A kind of air separation oxygenerator for energy storing-releasing, which is characterized in that the expansion power generator is filling It sets energy storage stage not work, releasing in device can generate electricity in the stage, to stabilize power network fluctuation.
A kind of air separation oxygenerator for energy storing-releasing provided by the invention, in existing air separation unit technology and liquefaction On the basis of air energy storage technology, using air separation unit varying duty technology, energy storing and electricity generating is realized by mass transfer medium of liquid nitrogen, and downwards User's steadily reliable output products oxygen is swum, the economic benefit of existing liquefied air energy-storage system is substantially increased.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1- air filter, 2- air compressor machine, 3- air conditioner, 4- molecular sieve adsorber, 5- electric heater, 6- pressurization Machine, 7- expand supercharger, 8- main heat exchanger, 9- rectifying column, Zhu's 10- condenser/evaporator, 11- regenerator, 12- liquid nitrogen storage, 13- Liquid nitrogen booster pump, 14- vaporizer, 15- expansion power generator, 16- liquid oxygen storage tank.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings of the specification so that advantages of the present invention and Feature can be easier to be readily appreciated by one skilled in the art, to make apparent specific boundary to protection scope of the present invention It is fixed.
As shown in Figure 1, a kind of air separation oxygenerator for energy storing-releasing, including air separation oxygenerator and nitrogen Expansion power generation device；
Air separation oxygenerator, including air filter 1, air compressor machine 2, air conditioner 3, molecular sieve adsorber 4, electric heater 5, Supercharger 6, expansion supercharger 7, main heat exchanger 8, rectifying column 9, main condenser 10, liquid nitrogen storage 12 and liquid oxygen storage tank 16.Raw material Air through self-cleaning air filter 1 remove dust and other mechanical admixtures, air after filtering in centrifugal air compressor 2 pressure Contracting.After air conditioner 3 is cooling, the molecular sieve adsorber 4 used into switching, carbon dioxide, hydrocarbon in air and Remaining water vapour is adsorbed.Raw air through supercooling, purification is divided into two strands, one enters main heat exchanger 8 and is cooled to Condensing temperature enters the lower tower of rectifying column 9, another pressurization of stock-traders' know-how supercharger 6 and the cooling drop of expansion 7 constant entropy expansion of supercharger after nearby Enter the lower tower of rectifying column 9 after temperature.By initial gross separation at gas nitrogen and oxygen-enriched liquid air, top gas nitrogen liquefies air in main condenser 10 It is output to liquid nitrogen storage 12, while upper tower bottom part liquid oxygen is gasified and is sent to main heat exchanger 8, the oxygen-rich liquid empty pump of lower tower bottom It is used as upper tower phegma out.Tower bottom liquid oxygen is sent to liquid oxygen storage tank 16 on rectifying column 9, and tower bottom nitrogen is in master on rectifying column 9 Sending out after 8 re-heat of heat exchanger is used as regeneration gas practical, and wherein electric heater 5 is arranged on regeneration gas transfer pipeline, and effect is point Heating regeneration gas uses (regeneration gas is nitrogen in the present apparatus) when son sieve high temperature regeneration.
Nitrogen expansion power generator, including liquid nitrogen force (forcing) pump 13, vaporizer 14, regenerator 11 and expansion power generator 15.Institute The entrance of the outlet connection liquid nitrogen force (forcing) pump 13 of liquid nitrogen storage 12 is stated, the outlet connection vaporizer 14 of the liquid nitrogen force (forcing) pump 13 The outlet of entrance, vaporizer 14 is connected with expansion power generator 15, and high pressure nitrogen enters expansion power generator from the outlet of vaporizer 14 15 power generations；The regenerator 11 is connected with vaporizer 14, and liquid nitrogen gasification cooling capacity passes to regenerator 11.
Air compressor machine 2 and supercharger 6 by frequency conversion or adjust inlet guide vane technology realization varying duty, energy storage stage high load capacity fortune Row, releasing can stage underrun.
All devices can operate in high load capacity operating condition or running on the lower load in air separation oxygenerator.
Molecular sieve adsorber 4 is that two switchings use, wherein another regenerates when a job.Energy storage stage regeneration gas With gas from the nitrogen on 9 top of rectifying column, the regeneration gas gas in energy stage is released from the nitrogen on 9 top of rectifying column and expansion hair The nitrogen of 15 final stage of motor outlet.
Liquid oxygen storage tank 16 plays the role of balancing oxygen output of products total amount, and the accumulation of energy stage stores liquid oxygen, and releasing can stage output Liquid oxygen makes the oxygen product total amount exported after summarizing remain stable always.
Regenerator 11 stores cooling capacity in cooling capacity surplus, released cold quantity when cooling capacity shortage, balancing device in the accumulation of energy stage or Releasing can stage different refrigeration requirement.
Expansion power generator 15 does not work in the accumulation of energy stage, can generate electricity in the stage releasing, to stabilize power network fluctuation.
As shown in Figure 1, a kind of air separation oxygenerator for energy storing-releasing of the invention, including air-separating oxygen-making dress It sets and nitrogen expansion power generator.
Low power consumption period, also known as energy storage stage, air-separating plant operate in high load capacity operating condition, nitrogen expansion power generation dress Set and do not work: filtered raw air is pressurized by air compressor machine, high temperature air through air conditioner and molecular sieve purification and it is cooling after, One exchanges heat into main heat exchanger cools down, one is expanded into expanding machine supercharger liquefies, and two strands of air are all separated into rectifying column distillation, Meanwhile main heat exchange obtains cooling capacity by regenerator.Liquid nitrogen enters liquid nitrogen storage storage, liquid oxygen tower from rectifying column from main condenser Bottom enters liquid nitrogen storage storage, and product oxygen exports after entering main heat exchanger re-heat from rectifying column extraction.
The peak of power consumption period also known as releases the energy stage, and air-separating plant operates in running on the lower load, nitrogen expansion power generation dress Set work: low temperature liquid nitrogen pressurizes through liquid nitrogen booster pump, and into vaporizer heating and gasifying, high pressure nitrogen drives expansion power generator output Electric energy, expansion power generator final stage export nitrogen and supplement regenerating molecular sieve gas, meanwhile, the cooling capacity of liquid air gasification release passes to cold-storage Device.Product oxygen is supplemented from liquid oxygen storage tank and is exported in addition to coming from rectifying column, liquid oxygen, and product oxygen supply is made to keep stablizing.
Embodiment:
For convenience of understanding function of the invention, it is assumed that for composition of air containing only oxygen nitrogen, content is respectively oxygen 20%, and nitrogen 80% does not consider The dosage of regeneration gas, it is assumed that high underload is respectively 100% and 50%, oxygen or nitrogen use level Zhan Quanjie of the power generation with product Section air usage ratio is as shown in the table:
Oxygen nitrogen consumption comparison sheet under two operating conditions
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to be said using the present invention Equivalent structure or equivalent flow shift made by bright book and accompanying drawing content is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims (7)

1. a kind of air separation oxygenerator for energy storing-releasing, which is characterized in that including air separation oxygenerator and nitrogen Expansion power generation device；
The air separation oxygenerator, including air filter (1), air compressor machine (2), air conditioner (3), molecular sieve adsorber (4), electric heater (5), supercharger (6), expansion supercharger (7), main heat exchanger (8), rectifying column (9), main condenser (10), liquid Nitrogen storage tank (12) and liquid oxygen storage tank (16)；Air filter (1), air compressor machine (2), air conditioner (3), molecular sieve adsorber (4) according to Secondary to be connected, the molecular sieve adsorber (4) is equipped with two, wherein a molecular sieve adsorber (4) is connected with main heat exchanger (8), Main heat exchanger (8) is connected with the lower tower of rectifying column (9), and another molecular sieve adsorber (4) is connected with supercharger (6), supercharger (6) it is connected with expansion supercharger (7), expansion supercharger (7) is connected with the lower tower of rectifying column (9)；The lower tower of the rectifying column (9) Top is equipped with gas nitrogen output tube road, and the liquefaction in main condenser (10) of gas nitrogen is output to liquid nitrogen storage (12), under rectifying column (9) Tower bottom is equipped with oxygen-enriched liquid air pipeline, and oxygen-enriched liquid air extraction is used as upper tower phegma；There are two the upper tower bottom of rectifying column (9) is set Liquid oxygen output pipe, a part of liquid oxygen are sent to liquid oxygen storage tank (16), and another part liquid oxygen, which is gasified, is sent to main heat exchanger (8), The upper top of tower of rectifying column (9) is equipped with nitrogen output pipe, and nitrogen is sent out after main heat exchanger (8) re-heat to be made as regeneration gas With；
The nitrogen expansion power generator, including liquid nitrogen force (forcing) pump (13), vaporizer (14), regenerator (11) and expansion power generator (15), the entrance of outlet connection liquid nitrogen force (forcing) pump (13) of the liquid nitrogen storage (12), the outlet of the liquid nitrogen force (forcing) pump (13) The entrance of vaporizer (14) is connected, the outlet of the vaporizer (14) is connected with expansion power generator (15), and high pressure nitrogen is from vaporization The outlet of device (14) enters expansion power generator (15) power generation；The regenerator (11) is connected with vaporizer (14), and liquid nitrogen gasification is cold Amount passes to regenerator (11), and the regenerator (11) is connected with main heat exchanger (8).
2. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that the pneumatics Machine (2) and supercharger (6) are by frequency conversion or adjust inlet guide vane and realize varying duty, in device energy storage stage heavy-duty service, Device is released can stage underrun.
3. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that the air All devices in separation oxygenerator can operate in high load capacity operating condition or running on the lower load.
4. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that described two Molecular sieve adsorber (4) wherein a job when, another regeneration, energy storage stage regeneration gas gas is on rectifying column (9) The nitrogen of top of tower, the regeneration gas for releasing the energy stage come from the nitrogen and expansion power generator (15) of rectifying column (9) upper top with gas The nitrogen of final stage outlet.
5. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that the liquid oxygen Storage tank (16) plays the role of balancing oxygen output of products total amount, stores liquid oxygen in device energy storage stage, and it is defeated to release the energy stage in device Liquid oxygen out makes the oxygen product total amount exported after summarizing remain stable always.
6. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that the cold-storage Device (11) stores cooling capacity in cooling capacity surplus, released cold quantity when cooling capacity shortage, balancing device energy storage stage or release can the stage not Same refrigeration requirement.
7. a kind of air separation oxygenerator for energy storing-releasing according to claim 1, which is characterized in that the expansion Generator (15) does not work in device energy storage stage, and releasing in device can generate electricity in the stage, to stabilize power network fluctuation.
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