WO2015120782A1 - 一种气体液化方法及系统 - Google Patents

一种气体液化方法及系统 Download PDF

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Publication number
WO2015120782A1
WO2015120782A1 PCT/CN2015/072424 CN2015072424W WO2015120782A1 WO 2015120782 A1 WO2015120782 A1 WO 2015120782A1 CN 2015072424 W CN2015072424 W CN 2015072424W WO 2015120782 A1 WO2015120782 A1 WO 2015120782A1
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Prior art keywords
gas
liquefaction
liquid
oxygen
gasification
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PCT/CN2015/072424
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English (en)
French (fr)
Inventor
陈正洪
杨桂芳
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陈正洪
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Priority to US15/118,945 priority Critical patent/US20160356545A1/en
Publication of WO2015120782A1 publication Critical patent/WO2015120782A1/zh

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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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0269—Arrangement of liquefaction units or equipments fulfilling the same process step, e.g. multiple "trains" concept
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0015—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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0017—Oxygen
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return stream
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0236—Heat exchange integration providing refrigeration for different processes treating not the same feed stream
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0242—Waste heat recovery, e.g. from heat of compression
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
    • F25J1/0251—Intermittent or alternating process, so-called batch process, e.g. "peak-shaving"
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/40—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being 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
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/90—Hot gas waste turbine of an indirect heated gas for power generation
    • 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
    • F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
    • 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
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/30—Integration in an installation using renewable energy
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/60—Details about pipelines, i.e. network, for feed or product distribution
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank

Definitions

  • the invention relates to the field of gas liquefaction, in particular to a gas liquefaction method and system.
  • gas liquefaction equipment is generally used to liquefy gas.
  • the gas liquefaction apparatus exchanges heat generated by the compression of the gas by continuously adding additional cold energy, and compresses the gas to liquefy the gas.
  • a gas liquefaction system includes: a gas transmission passage, a gas driving device, and at least two gas liquefaction devices arranged in a level, wherein the gas driving device is disposed at a gas transmission An intake end of the passage, the gas transfer passage being in communication with an intake end of at least two gas liquefaction apparatuses, wherein the at least two gas liquefaction apparatuses are respectively configured with respective liquid gas storage tanks; wherein the gas drive apparatus, For driving gas to enter from the intake end of the gas passage; the at least two gas liquefaction devices arranged by level for level The order of liquefying the gas entering from the inlet end of the liquefaction plant, the liquid gas obtained by the liquefaction reaction entering the liquid gas storage tank configured therein, and the gasification device for gas in any gas liquefaction plant When the liquefaction reaction requires cold energy, heat exchange is performed on the liquid gas released from the liquid gas storage tank of the gas liquefaction equipment of the same
  • a gasification reaction occurs; a cold energy pipe for conveying cold energy generated by the gasification reaction to the arbitrary gas liquefaction device, so that the arbitrary gas liquefaction device obtains cold energy to exchange heat of heat generated when the gas is compressed, and passes
  • the heat exchange causes the gas in the gas liquefaction apparatus to reach or lower than a liquefaction critical temperature of the gas, so that the gas is liquefied, and the liquid gas obtained by the liquefaction reaction enters a liquid gas storage tank configured for the gas liquefaction apparatus.
  • a gas liquefaction method for a gas liquefaction system including a gas passage, a gas drive device, and at least two gas liquefaction devices arranged in a level, the method comprising: Providing a gas driving device at an intake end of the gas conveying passage, communicating the gas conveying passage with an inlet end of the at least two gas liquefaction devices, and respectively configuring the respective liquid gas storage tanks for the at least two gas liquefaction devices; The gas driving device drives the gas to enter from the inlet end of the gas passage; using the at least two gas liquefaction devices arranged according to the level, liquefying and liquefying the gas entering from the inlet end of the liquefaction device in a grade order The obtained liquid gas enters a designated liquid gas storage tank configured for it; when the gas in any gas liquefaction equipment requires cold energy for liquefaction reaction, the gasification equipment is used in the same level or level before any of the gas liquef
  • the gas liquefaction system of the embodiment of the invention includes a gas transmission channel, a gas driving device, and a level
  • the at least two gas liquefaction devices are arranged to liquefy the gas entering from the inlet end of the liquefaction device in order of magnitude, and the liquid gas obtained by the liquefaction reaction enters the liquid gas storage tank configured for it, as in any gas liquefaction device
  • the liquid gas released from the liquid gas storage tank of the gas liquefaction equipment of the same level or the same level and having obtained the liquid gas is exchanged by the gasification equipment, so that the released liquid gas generates gas.
  • the cold reaction energy is supplied to the gas liquefaction device through the cold energy pipeline.
  • the gas liquefaction device can obtain cold energy to exchange heat of heat generated when the gas is compressed, so that the gas is Liquefaction, it can be seen that the liquid gas obtained by liquefying the gas liquefaction equipment of the upper stage can provide sufficient cold energy for heat exchange in the liquefied gas of the next-stage gas liquefaction equipment, thereby providing cold energy by using the liquid gas obtained by the liquefaction of the upper stage step by step. No need to constantly provide additional sources of cold energy, it is possible to carry out gas liquefaction more conveniently and energy-efficiently Chain effect of small-minded, conducive to larger, more efficient liquefied gas, continuous production.
  • 1-1 is a schematic structural diagram of a gas liquefaction system according to an embodiment of the present invention.
  • 1-2 is a second schematic structural diagram of a gas liquefaction system according to an embodiment of the present invention.
  • FIG. 2 is a third schematic structural diagram of a gas liquefaction system according to an embodiment of the present invention.
  • FIG. 3 is a fourth structural schematic diagram of a gas liquefaction system according to an embodiment of the present invention.
  • FIG. 4 is a fifth structural schematic diagram of a gas liquefaction system according to an embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a gas liquefaction method according to an embodiment of the present invention.
  • the embodiment of the present invention adopts a step-by-step liquefaction implementation, that is, the gas liquefaction system provided by the embodiment of the present invention includes at least two gas liquefaction devices arranged according to the level.
  • the gas entering from the inlet end of the liquefaction device is liquefied by the liquefaction device one by one in the order of the ranks.
  • the level is arbitrary.
  • the liquid gas released from the liquid gas storage tank of the gas liquefaction equipment of the same level or the same level is heat exchanged, the gas liquid of the released liquid gas is gasified, and the cold energy generated by the gasification reaction is supplied to the liquefied gas.
  • Equipment (required to be explained, wherein how the cold energy collection and transportation is known to those skilled in the art, which is not specifically described in the present case), so that the arbitrary gas liquefaction equipment obtains the heat generated by the cold energy to compress the gas.
  • the gas in the gas liquefaction apparatus reaches or At the liquefaction critical temperature of the gas, the gas is liquefied.
  • the liquid gas obtained by liquefying the upper gas liquefaction device can provide sufficient cold energy for heat exchange in the liquefied gas of the next-stage gas liquefaction device, thereby utilizing the stepwise utilization.
  • the liquid gas obtained by the first-stage liquefaction provides cold energy, and it is not necessary to provide additional cold energy sources continuously, and the energy required for cooling is saved, so that gas liquefaction can be performed more conveniently and energy-savingly.
  • FIG. 1-1 is a schematic structural diagram of a gas liquefaction system according to an embodiment of the present invention.
  • the system includes: a gas transmission passage 101, a gas driving device 102, at least two gas liquefaction devices 103, 104, 105 arranged in a level, wherein the gas driving device 102 is disposed at a gas transmission
  • the inlet ends are connected, and the at least two gas liquefaction apparatuses are respectively configured with respective liquid gas storage tanks, for example, the outlet end of the gas liquefaction apparatus is connected to the intake end of the liquid gas storage tank;
  • the gas driving device 102 can be used to drive gas from the intake end of the gas transmission passage 101;
  • the at least two gas liquefaction devices 103, 104, 105 arranged in a level can be used to liquefy the gas entering from the inlet end of the liquefaction device in a level order, and the liquid gas obtained by the liquefaction reaction enters the configuration
  • the liquid gas storage tank for example, the order of the gas liquefaction apparatus shown in FIG. 1-1 may be the gas liquefaction apparatus 103, 104, 105 from front to back.
  • gas liquefaction system may further include:
  • the gasification device 106 can be used for liquid gas of a gas liquefaction device having the same level or level as the gas liquefaction device before the gas liquefaction process requires cold energy in any gas liquefaction device.
  • the liquid gas released from the storage tank is subjected to heat exchange to cause a gasification reaction of the released liquid gas;
  • the cold energy pipe 107 may be configured to supply cold energy generated by the gasification reaction to the arbitrary gas liquefaction device, so that the any gas liquefaction device obtains cold energy to exchange heat of heat generated when the gas is compressed, through the heat.
  • the gas is liquefied by switching the gas in the gas liquefaction apparatus to or below the liquefaction critical temperature of the gas, and the liquid gas obtained by the liquefaction reaction enters the liquid gas storage tank configured for the gas liquefaction apparatus.
  • the liquid gas storage tank 103a may be in communication with the intake end of the cold energy conduit 107, and the cold energy conduit 107 delivers cold energy to the outside of the cylinder of any gas liquefaction plant to rapidly cool the gas therein. It can be understood that if the critical temperature of liquefaction is still not reached, the cooling can be assisted by adding dry ice or the like.
  • the power released by the gasification can also drive the generator to generate electricity, and the generated power can be supplied to any equipment such as a gas liquefaction system or a power grid.
  • the gas liquefaction device may be a general gas liquefaction device, and the present invention is not limited to the specific structure thereof.
  • the gas liquefaction apparatus may have respective cylinders, and the gas liquefaction apparatuses may share one gas compression apparatus or may have respective gas compression apparatuses.
  • the gas liquefaction equipment liquefies the gas, it can be based on entering the cylinder.
  • the physical properties of the gas such as the liquefaction temperature and the liquefaction pressure, are lowered, pressurized, and liquefied.
  • some dry ice may be added to the gas liquefaction apparatus in time to initiate the cooling process, and pressurize when reaching the liquefaction critical temperature of the gas.
  • the gas liquefied by the gas liquefaction device of the first liquefied gas set in the order of rank is carbon dioxide gas
  • the liquefied carbon dioxide may be pressurized when the liquefaction critical temperature is 31 degrees Celsius or lower than the liquefaction critical temperature ( Some may form dry ice) into the liquid gas storage tank.
  • the liquid gas obtained by liquefying the gas liquefaction equipment of the first stage can provide sufficient cold energy for heat exchange in the liquefied gas of the next-stage gas liquefaction equipment, thereby obtaining the liquefaction of the upper stage step by step.
  • the liquid gas provides cold energy, eliminating the need for additional sources of cold energy, making gas liquefaction easier and more energy efficient.
  • the liquid gas storage tank in the system provided by the embodiment of the present invention may be a high pressure sealed container, and the air inlet and the air outlet of each device may be provided with a safety valve, and the operating state and related data of each device may be collected into the center.
  • the console, and then the central console performs unified control on each device of the system provided by the embodiment of the present invention to perform gas liquefaction.
  • an automatic alarm decompression device can be set in some locations of the system.
  • the cold energy generated by the gasification reaction can also be temporarily stored in the cold energy storage tank before being sent to the gas liquefaction device through the cold energy pipeline 107.
  • cold energy is required. Cold energy is delivered to the any gas liquefaction plant.
  • the system provided by the embodiment of the present invention may further include an insulated pipe (the heat insulating pipes 103c, 104c, and 105c shown in FIG. 1-2) connected to the gas liquefaction device. It is used for collecting the heat energy generated by the liquefaction and transferring the heat energy to the heat energy storage tank (the heat energy storage tanks 103d, 104d, 105d shown in FIG. 1-2) for storage to provide heat energy when the gasification equipment exchanges heat with the liquid gas. .
  • the heat energy generated by liquefaction can be collected through insulated pipes to provide thermal insulation for thermal insulation. As shown in FIG.
  • the heat energy generated by the gas liquefaction apparatus 103 when the gas is liquefied can be collected into the heat insulating storage tank 103d through the heat insulating pipe 103c, and the heat energy generated by the gas liquefaction device 104 when the gas is liquefied can pass.
  • the insulated pipe 104c collects the insulated thermal energy storage tank 104d, and the heat energy generated by the gas liquefaction device 105 when the gas is liquefied can be collected into the insulated thermal energy storage tank 105d through the insulated pipe 105c, so that when the gasification device 106 is directed to the liquid gas During the process of heat exchange for gasification, the heat energy required for the heat exchange process can be provided.
  • thermal energy in the thermal energy storage tank can be transferred to the gasification equipment through a heat insulating pipe through a medium such as water, air, etc., thereby reducing or eliminating the need for additional thermal energy.
  • the cold energy generated by the gasification can also be collected into the insulated cold energy storage tank. It should be noted that, among them, how the cold energy and the heat energy are collected and transported is a knowledge that can be understood by those skilled in the art, and the present case is not specifically described.
  • the heat energy generated by liquefaction and the cold energy generated by gasification each function in the system, and the heat and neutralization is performed at a certain stage of liquefaction and gasification to improve the efficiency.
  • the outlet end of at least one liquid gas storage tank is in communication with the gasification apparatus 106 (for example, at least two gases may be as shown in FIG. 2).
  • the outlet end of the liquid gas storage tank of the liquefaction apparatus such as the outlet end of the liquid gas storage tanks 103a, 104a, 105a, is connected to the gasification apparatus, or the liquid gas storage tank of the gas liquefaction apparatus of the first order is not sorted.
  • the gasification apparatus 106 can be used when the power supply of the wind turbine unit in the wind farm is insufficient for the power grid 100
  • the liquid gas in any liquid gas storage tank in communication with the gasification apparatus is gasified; and may also include a generator 111 for driving the gas released by the gasification apparatus 106 to supply power to the grid 100.
  • the gas driving device 102 can be specifically used to drive gas from the intake end of the gas transmission passage when the wind in the wind field exceeds a specific wind.
  • the embodiment of the present invention can select an appropriate operation area for the liquefied air in the wind field, and apply the embodiment of the invention in the operation area.
  • the liquid gas is gasified, and the power is driven to drive the generator to generate electricity to supply power to the grid, thereby extending power supply to the grid.
  • the power source of the gas liquefaction system may be the power generated by the fan unit in the wind farm, for example, the gas driving device 102, the gas liquefaction device 103, 104, 105, etc.
  • the electric power source of the gas liquefaction system can also be power generated by other energy sources, for example, peak and valley excess electric energy, ocean tidal energy, geothermal energy, solar energy, and the like.
  • the power generated by the fan unit in the wind farm may be two specific implementations of the power generated by the fan unit in the wind farm to provide power to the gas liquefaction system.
  • One type is that the wind turbine unit in the wind farm generates power according to a specified power, wherein the specified power is How much can be set according to the needs of the power grid.
  • the specified power is How much can be set according to the needs of the power grid.
  • the wind energy exceeds the specified power the wind energy exceeding the specified power can be concentrated into the operation area and converted into electricity as the power source of the gas liquefaction system; the other is that it can be selected in the wind field.
  • a proportion of the fan unit when the wind energy is large, these selected proportions of the fan unit specifically provide a source of electricity for the gas liquefaction system for liquefied air. No matter which implementation is adopted.
  • the intermittent wind energy can be converted into electrical energy and stored in the battery, so that when the power in the battery is sufficient to start the gas liquefaction system, the gas liquefaction system is supplied with a power source, and the Perform air liquefaction.
  • the gasification device 106 of this embodiment may include one or more gasification devices.
  • the gas outlets of the liquid gas storage tanks of the respective gas liquefaction devices may be connected to one gasification device, for example, for example.
  • the gas outlets of the liquid gas storage tanks of the respective gas liquefaction apparatuses may be respectively connected to the respective gasification apparatuses, and are not limited in the present invention.
  • the gasification device according to the embodiment of the present invention may include a heat exchanger and the like.
  • the grid stability can be stabilized according to the actual scenario.
  • the need to extend power generation is selected and is not limited in the present invention.
  • the released gas drives the generator to supply power to the power grid, and can also be output to the power grid together with the wind power of other wind turbine units, thereby eliminating the impact of the wind power change of the wind turbine unit on the power grid.
  • the gas in the liquid gas storage tank can be released to drive the engine to supply power to the grid, so that the power grid can be obtained in time to make the wind turbine unit safely disconnected before the wind turbine unit is unable to supply power to the network. Eliminate the impact on the grid.
  • the gas driving device is turned on to drive the air into the gas transmission channel, start liquefied air, and convert the excess wind energy into the internal energy of the liquid gas for storage.
  • each gas liquefaction device is connected to the heat insulation pipe, and the heat energy generated by the liquefaction is stored in the heat energy storage tank, thereby gasifying the gasification device. Provides heat when the gas is in use.
  • the system provided by the embodiment of the present invention can separate several single gases from the mixed gas, and these single The gases are separately liquefied.
  • FIG. 3 is a structural schematic diagram of the gas liquefaction system provided by the embodiment of the present invention.
  • the gas liquefaction system provided by the embodiment of the present invention may further include a filtering device separately provided for each gas liquefaction device for separating a single gas;
  • the at least two gas liquefaction devices are in a sequence from front to back, starting from the intake end of the gas transmission passage, and are connected to the gas transmission passage one by one through a filtering device provided thereto, wherein the gas liquefaction device
  • the intake end is in communication with a separation port of the filter device provided therefor, and the intake ports of the respective filter devices are in communication with the gas transfer passage (for example, in order from front to back in order of the level, starting from the intake end of the gas passage 101, the gas
  • the liquefaction device 103 is in communication with the gas passage via the filter device 103b
  • the gas liquefaction device 104 is in communication with the gas passage via the filter device 104b
  • the gas liquefaction device 105 is in communication with the gas passage via the filter device 105b);
  • the inlet of the filter device of the first gas liquefaction device is in communication with the intake end of the gas passage, for Any gas liquefaction equipment other than a gas liquefaction equipment, the optional gas
  • the air inlet of the filtering device of the body fluidizing device communicates with the exhaust port of the filtering device of the previous gas liquefaction device before the arbitrary gas liquefaction device through the gas conveying passage (for example, the filtering device 103b of the first gas liquefaction device 103)
  • the intake port communicates with the intake end of the gas passage 101, and the intake port of the filter device 104b of the gas liquefaction device 104 communicates with the exhaust port of the filter device 103b through the gas passage 101, and the filter device 105b of the gas liquefaction device 105 advances.
  • the air port is connected to the exhaust port of the filtering device 104b through the gas passage 101);
  • the filtering device such as the filtering device 103b, 104b, 105b, is used for filtering the gas entering from the inlet of the filtering device, and the separated single gas enters the gas liquefaction device from the separation port, and the remaining gas is exhausted. The mouth is discharged.
  • an air filtering device for filtering fine impurities such as dust may be provided at the inlet of the ventilating fan of the gas driving device.
  • the gas may be natural air in a wind farm, as shown in FIG. 3, wherein the at least two gas liquefaction devices may include a carbon dioxide liquefaction device 103 for liquefying carbon dioxide, and an oxygen liquefaction device 104 for liquefying oxygen. And a nitrogen liquefaction apparatus 105 for liquefying nitrogen, wherein the carbon dioxide liquefaction apparatus 103 is a first gas liquefaction apparatus that is connected from the intake end of the gas passage and communicates with the gas passage, and the oxygen liquefaction apparatus 104 is from the gas passage. The gas end starts with a second gas liquefaction device in communication with the gas passage, and the nitrogen liquefaction device 105 is a third gas liquefaction device that communicates with the gas passage from the intake end of the gas passage.
  • each gas liquefaction device can be used for accommodating and liquefying which single gas, and is not limited in the present invention.
  • the filter device 103b provided at the intake end of the carbon dioxide liquefaction device may include a filter membrane for separating carbon dioxide
  • the filter device 104b provided at the intake end of the oxygen liquefaction device may include a filter for separating oxygen.
  • the membrane, the filtration device 105b provided at the inlet end of the nitrogen liquefaction apparatus, may contain a filtration membrane for separating nitrogen.
  • the carbon dioxide liquefaction equipment level may be prior to the level of the oxygen liquefaction apparatus and the nitrogen liquefaction apparatus, the oxygen liquefaction apparatus and the nitrogen liquefaction apparatus
  • the levels may be the same; they may be different, for example, the level of the oxygen liquefaction plant is prior to the level of the nitrogen liquefaction plant so that the more easily liquefied oxygen is liquefied prior to the nitrogen.
  • the gasification device 106 can be used to exchange heat with liquid carbon dioxide released by the liquid gas storage tank 103a disposed by the carbon dioxide liquefaction device 103 when the gas in the oxygen liquefaction device 104 requires cold energy for liquefaction reaction.
  • the cold energy pipe 107 can be used to supply cold energy generated by gasification of liquid carbon dioxide to the oxygen liquefaction device 104, so that the oxygen liquefaction device 104 obtains heat exchange between the cold energy and the heat generated when the oxygen is compressed.
  • the heat exchange causes the oxygen in the oxygen liquefaction device to reach or fall below the liquefaction critical temperature of the oxygen, so that the oxygen is liquefied, and the liquid oxygen obtained by the liquefaction reaction enters the liquid gas storage tank 104a configured for the oxygen liquefaction device 104;
  • the gasification device 106 can also be used to partially release liquid liquid released from the liquid gas storage tank 104a that has obtained liquid oxygen when the cold energy generated by vaporization of the liquid carbon dioxide released by the liquid gas storage tank 103a of the carbon dioxide liquefaction device 103 is insufficient. Oxygen undergoes heat exchange to cause a gasification reaction;
  • the cold energy conduit 107 can also be used to deliver cold energy generated by liquid oxygenation to the oxygen liquefaction apparatus 104 and/or the nitrogen liquefaction apparatus 105 so that the oxygen liquefaction apparatus 104 and/or the nitrogen liquefaction apparatus 105 are obtained.
  • the cold energy exchanges heat with heat generated when the gas is compressed, and the gas in the oxygen liquefaction apparatus and/or the nitrogen liquefaction apparatus is brought to a temperature faster than or lower than the liquefaction critical temperature of the gas by the heat exchange, so that the gas therein is liquefied.
  • the wind power concentrated to the operating area may supply power to the gas drive device 102 and the gas liquefaction devices 103, 104, 105;
  • the gas driving device 102 drives air to enter from the air inlet end of the gas transmission passage. After the air is filtered by the filtering device 103b, the separated carbon dioxide gas enters the carbon dioxide liquefaction device 103 from the separation port of the filtering device 103b, and the carbon dioxide concentration in the carbon dioxide liquefaction device reaches At a certain concentration, the carbon dioxide liquefaction apparatus 103 pressurizes the gas therein, and may add appropriate dry ice during the pressurization process to start the cooling process. When the gas temperature in the carbon dioxide liquefaction apparatus reaches or falls below the critical temperature of carbon dioxide liquefaction, the continuation continues. Pressurized, carbon dioxide is liquefied, The liquefied carbon dioxide enters the liquid gas storage tank 103a in communication with the carbon dioxide liquefaction device 103;
  • the power supply to the gas driving device and the gas liquefaction device can continue to be used as a power source, and if not, the backup battery can be used as the power supply device.
  • the remaining gas discharged from the exhaust port of the filter device 103b enters the intake port of the filter device 104b, and the separated oxygen gas enters the oxygen liquefaction device 104 from the separation port of the filter device 104b.
  • the liquid gas storage tank 103a collects a certain concentration of liquid carbon dioxide, and then exchanges heat with the liquid carbon dioxide released from the liquid gas storage tank 103a of the carbon dioxide liquefaction apparatus 103 to be released.
  • the liquid carbon dioxide undergoes a gasification reaction, and the cold energy is supplied to the oxygen liquefaction device 104 through the cold energy pipe 107, so that the oxygen liquefaction device 104 obtains cold energy to exchange heat for heat generated when the gas is compressed, and the heat exchange is performed by the heat exchange.
  • the oxygen in the oxygen liquefaction equipment reaches or falls below the liquefaction critical temperature of oxygen, so that the oxygen is liquefied, and the liquid oxygen obtained by the liquefaction reaction (possibly including part of the solid oxygen) enters the liquid gas storage tank 104b;
  • the gasification device 106 can also be used to gasify a portion of the liquid oxygen in the liquid gas storage tank 104b, and the cold energy can be sent to the oxygen liquefaction device 104 through the cold energy pipe 107;
  • the remaining gas discharged from the exhaust port of the filter device 104b enters the intake port of the filter device 105b, and the separated nitrogen gas enters the nitrogen liquefaction device 105 from the separation port of the filter device 105b.
  • the nitrogen concentration in the nitrogen liquefaction apparatus 105 reaches a certain concentration
  • the liquid gas storage tank 103a or the liquid gas storage tank 104a has a certain liquid gas
  • the gas in the nitrogen liquefaction apparatus 105 is liquefied
  • the liquid gas storage tank 103a or The liquid gas released from the liquid gas storage tank 104a undergoes heat exchange to cause a gasification reaction of the released liquid gas, and the cold energy is sent to the nitrogen liquefaction device 105 through the cold energy pipe 107, so that the nitrogen liquefaction device 105 obtains a cold energy pair.
  • Nitrogen (some of which may be solid nitrogen) enters the liquid gas storage tank 105a.
  • the generator 111 can be driven by the gas released by the gasification device 106 to the gas driving device 102 and/or the gas liquefaction device 103, 104.
  • the generator 111 can also provide power to any device in the system provided by the embodiment of the present invention, or simultaneously supply power to the power grid, which is not limited in the present invention.
  • gas liquefaction apparatuses it is not limited to setting three gas liquefaction apparatuses, and more gas liquefaction apparatuses may be provided, and it is not limited to liquefying carbon dioxide, nitrogen, oxygen, for example, it may be used for liquefying ammonia gas or the like.
  • the liquid gas generated during the liquefaction may be a simple liquid gas or a mixed liquid gas, and is not limited in the present invention.
  • part of the liquid oxygen in the liquid gas storage tank may be released, and/or part of the liquid nitrogen in the gasification liquefaction storage tank may be released, and the released liquid oxygen and/or liquid nitrogen may be performed by the gasification equipment.
  • the gasification reaction uses the power released by the gasification reaction to drive the generator to generate electricity, and the generated electricity can continue to be used to supply power to the gas liquefaction system of the embodiment of the present invention, so that the system continues gas liquefaction, thereby continuously generating liquid oxygen and Industrial products such as liquid nitrogen.
  • the whole process can include artificial regulation and management.
  • the invention is not limited.
  • each gas liquefaction device is connected to the heat insulating pipe, and the heat energy generated by the liquefaction is stored in the heat energy storage tank, thereby gasifying the gas. Provide heat.
  • a liquid gas is gasified to generate a high-pressure gas, and a part of the high-pressure gas can be naturally discharged into the surrounding space, and the other part can be recovered by a gas recovery device such as a suction fan, and then matched with the gas recovery device.
  • the gas recovery pipe is sent back to the gas liquefaction plant, which is liquefied to form a liquid gas.
  • the fifth embodiment of the gas liquefaction system provided by the embodiment of the present invention shown in FIG. 4 can be referred to.
  • the gas outlet end of the gasification device 106 can also be in communication with the inlet end of the gas recovery device 109 for recovering the gas discharged from the gasification device 106 through the gas recovery pipe. 110 conveying the recovered gas to the at least two gas liquids
  • the intake end of one or more gas liquefaction devices in the plant is such that the vented gas is returned to the gas liquefaction plant as much as possible for liquefaction.
  • each liquid gas storage tank may be connected to a gasification device correspondingly, and accordingly, the gas outlets of each gasification device may be combined with An independent gas recovery device is connected, and the outlet end of the gas recovery pipe matched with the independent gas recovery device can directly communicate with the gas liquefaction device corresponding to the storage and liquefaction of the same gas, so that the discharged single gas can be returned to the gas liquefaction.
  • the equipment is liquefied, reducing the loss of filtration equipment.
  • the gas recovery device may include, for example, a vacuum pump or the like, and the gas recovery pipeline may automatically control the gas recovery by controlling the relevant components of the recovery pipeline by the control device, and the present invention will not be described again.
  • the liquid gas storage tank can be a closed container that can be disassembled, and the liquid gas storage tank that stores the liquid gas can be sold as a separate product. It is also possible to specially configure a storage with safety equipment for storing liquid storage tanks.
  • the size of the cylinder of the gas liquefaction apparatus is determined according to actual needs, and is not limited in the present invention.
  • the size, number and container material of the liquid gas storage tank storing the liquid gas can be determined according to actual needs.
  • the liquid gas storage tank may be a steel storage tank, or the storage tank may be poured into concrete, and may be disposed on the ground or in a semi-underground or underground manner, and is not limited in the present invention.
  • the power released by the gasification device 106 when vaporizing the liquid gas can also be used as a power source for other devices, for example, it can be used as a power source to drive the excavation equipment to mine the coal mine, drive the transportation vehicle, and the like.
  • each gas liquefaction device is connected to the heat insulation pipe, and the heat energy generated by the liquefaction is stored in the heat energy storage tank, thereby gasifying the gasification device. Provides heat when the gas is in use.
  • FIG. 5 is a schematic flowchart of a gas liquefaction method according to an embodiment of the present invention. As shown in FIG. 5, the method may include:
  • the gas driving device is disposed at an intake end of the gas conveying passage, and the gas conveying passage is communicated with the inlet ends of the at least two gas liquefaction devices, and the respective liquid gas storage tanks are respectively disposed for the at least two gas liquefaction devices ;
  • the liquid gas storage tank of the gas liquefaction equipment of the same level before the arbitrary gas liquefaction equipment and having obtained the liquid gas is used by the gasification equipment.
  • the released liquid gas undergoes heat exchange to cause a gasification reaction of the released liquid gas;
  • the gas liquefaction device may be a general gas liquefaction device, and the present invention is not limited to the specific structure thereof.
  • the gas liquefaction apparatus may have respective cylinders, which may share one gas compression device or may have respective gas compression devices.
  • the gas liquefaction device liquefies the gas
  • the gas may be cooled and pressurized to be liquefied according to the physical properties of the gas entering the cylinder, such as the liquefaction temperature and the liquefaction pressure.
  • some dry ice may be added to the gas liquefaction plant in time to initiate a cooling process, which is pressurized when it reaches or falls below the liquefaction critical temperature of the gas.
  • the gas liquefied by the gas liquefaction plant of the first liquefied gas in the order of magnitude is carbon dioxide gas, it can reach the liquefaction critical temperature of 31 degrees Celsius or Pressurized below the liquefaction critical temperature, the liquefied carbon dioxide (some of which may form dry ice) enters the liquid gas storage tank.
  • the liquid gas obtained by liquefying the gas liquefaction equipment of the first stage can provide sufficient cold energy for heat exchange in the liquefied gas of the next-stage gas liquefaction equipment, thereby utilizing the upper liquefaction step by step.
  • the obtained liquid gas provides cold energy, and it is not necessary to provide additional cold energy sources continuously, so that gas liquefaction can be performed more conveniently and energy-savingly.
  • the cold energy generated by the gasification reaction can also be temporarily stored in the cold energy storage tank before being sent to the gas liquefaction device through the cold energy pipeline 107.
  • cold energy is required. Cold energy is delivered to the any gas liquefaction plant.
  • the method provided by the embodiment of the present invention may further connect the gas liquefaction device with the heat insulation pipe, collect the heat energy generated by the liquefaction by using the heat insulation pipe, and transfer the heat energy to the heat energy storage tank for storage, so that the gasification device is in the liquid state.
  • the heat is supplied when the gas is heat exchanged.
  • thermal energy in the thermal energy storage tank can be transferred to the gasification equipment through a heat insulating pipe through a medium such as water, air, etc., thereby reducing or eliminating the need for additional thermal energy.
  • the gas outlets of the at least two gas liquefaction plants may be connected to the gasification device of the at least one liquid gas storage tank (for example, the gas outlets of the liquid gas storage tanks of the at least two gas liquefaction devices may be Both are connected to the gasification equipment, or the non-sorted gas outlets of the gas liquefaction equipment of the first gas liquefaction equipment are connected to the gasification equipment; when the wind turbines in the wind farm have insufficient power supply to the grid, The liquid gas in any liquid gas storage tank connected to the gasification device enters the gasification device for gasification; the gas released by the gasification device drives the generator to supply power to the power grid.
  • the embodiment of the present invention can select an appropriate operation area for the liquefied air in the wind field, and apply the embodiment of the invention in the operation area.
  • the liquid gas is gasified, and the power is driven to drive the generator to generate electricity to supply power to the grid, thereby prolonging the supply of power to the grid and reducing the wind energy change when the power is larger and faster. The impact.
  • the power generated by the fan unit in the wind farm may be two specific implementations of the power generated by the fan unit in the wind farm to provide power to the gas liquefaction system.
  • One type is that the wind turbine unit in the wind farm generates power according to a specified power, wherein the specified power is How much can be set according to the needs of the power grid.
  • the specified power is How much can be set according to the needs of the power grid.
  • the wind energy exceeds the specified power the wind energy exceeding the specified power can be concentrated into the operation area and converted into electricity as the power source of the gas liquefaction system; the other is that it can be selected in the wind field.
  • a proportion of the fan unit when the wind energy is large, these selected proportions of the fan unit specifically provide a source of electricity for the gas liquefaction system for liquefied air. No matter which implementation is adopted.
  • the intermittent wind energy can be converted into electrical energy and stored in the battery, so that when the power in the battery is sufficient to start the gas liquefaction system, the gas liquefaction system is supplied with a power source, and the Perform air liquefaction.
  • the gasification apparatus of this embodiment may include one or more gasification apparatuses.
  • the gas outlets of the liquid gas storage tanks of the respective gas liquefaction apparatuses may be connected to one gasification apparatus, for example, The gas outlets of the liquid gas storage tanks of the respective gas liquefaction apparatuses may be respectively connected to the respective gasification apparatuses, which are not limited in the present invention.
  • the gasification device according to the embodiment of the present invention may include a heat exchanger and the like.
  • the released gas drives the generator to supply power to the power grid, and can also be output to the power grid together with the wind power of other wind turbine units, thereby eliminating the impact of the wind power change of the wind turbine unit on the power grid.
  • the gas in the liquid gas storage tank can be released to drive the engine to supply power to the grid, so that the power grid can be obtained in time to make the wind turbine unit safely disconnected before the wind turbine unit is unable to supply power to the network. Eliminate the impact on the grid.
  • the gas driving device is turned on to drive the air into the gas transmission channel, start liquefied air, and convert the excess wind energy into liquid gas for storage.
  • the system provided by the embodiment of the present invention can separate several single gases from the mixed gas, and these single The gases are separately liquefied.
  • the gas is a mixed gas, such as natural air in a wind farm
  • the system provided by the embodiment of the present invention can separate several single gases from the mixed gas, and these single The gases are separately liquefied.
  • the gases are separately liquefied.
  • a filtering device for separating a single gas may be separately provided for each gas liquefaction device;
  • the at least two gas liquefaction devices are connected in stages from front to back in order from the intake end of the gas transmission passage, and are connected to the gas transmission passages one by one through a filtering device provided for the gas liquefaction device.
  • the gas end is connected with the separation port of the filtering device provided for the gas end, and the respective air inlets of the respective filtering devices are connected to the gas transmission channel;
  • the inlet of the filter device of the first gas liquefaction device is connected to the intake port of the gas passage, for Any gas liquefaction device other than the first gas liquefaction device, passing the air inlet of the filter device of any gas liquefaction device and the exhaust port of the filter device of the previous gas liquefaction device before the arbitrary gas liquefaction device through the gas transmission Channel connection
  • the gas entering from the inlet of the filtering device is filtered by a filtering device, and the separated single gas enters the gas liquefaction device from the separation port, and the remaining gas is discharged from the exhaust port.
  • the gas can be natural air in the wind farm.
  • the at least two gas liquefaction apparatuses may include a carbon dioxide liquefaction apparatus for liquefying carbon dioxide, an oxygen liquefaction apparatus for liquefying oxygen, and a nitrogen liquefaction apparatus for liquefying dinitrogen gas, wherein the carbon dioxide liquefaction apparatus is an intake air from a gas passage
  • the first gas liquefaction device in communication with the gas passage is a second gas liquefaction device that starts from the intake end of the gas passage and communicates with the gas passage
  • the nitrogen liquefaction device is a gas passage.
  • a third gas liquefaction device that begins at the intake end and communicates with the gas passage.
  • a filter device disposed at the inlet end of the carbon dioxide liquefaction device may include a filter membrane for separating carbon dioxide
  • a filter device disposed at the inlet end of the oxygen liquefaction device may include a filter membrane for separating oxygen.
  • Air inlet setting of nitrogen liquefaction equipment A filter membrane for separating nitrogen may be included in the filtration apparatus.
  • the carbon dioxide liquefaction apparatus level may be prior to the level of the oxygen liquefaction apparatus and the nitrogen liquefaction apparatus, the oxygen liquefaction apparatus and the nitrogen liquefaction apparatus may be of the same grade; or may be different, for example, oxygen liquefaction
  • the level of equipment is prior to the level of the nitrogen liquefaction plant so that oxygen is liquefied prior to nitrogen.
  • the gasification device is used to exchange heat of the liquid carbon dioxide released by the liquid gas storage tank disposed in the carbon dioxide liquefaction device to cause a gasification reaction;
  • the cold energy generated by vaporizing the liquid carbon dioxide by the cold energy pipeline is sent to the oxygen liquefaction device, so that the oxygen liquefaction device obtains cold energy to exchange heat with heat generated during oxygen compression, and the oxygen liquefaction device is used in the oxygen liquefaction device
  • the oxygen is faster or lower than the liquefaction critical temperature of oxygen, so that the oxygen is liquefied, and the liquid oxygen obtained by the liquefaction reaction enters the liquid gas storage tank configured for the oxygen liquefaction device;
  • the gasification device is used to exchange heat of a part of the liquid oxygen released from the liquid gas storage tank which has obtained liquid oxygen to cause gasification reaction.
  • the cold energy generated by the liquid oxygenation is sent to the oxygen liquefaction device and/or the nitrogen liquefaction device through the cold energy pipeline, so that the oxygen liquefaction device and/or the nitrogen liquefaction device obtain cold energy to exchange heat for heat generated when the gas is compressed,
  • the gas in the oxygen liquefaction apparatus and/or the nitrogen liquefaction apparatus is brought to or below the liquefaction critical temperature of the gas by the heat exchange so that the gas therein is liquefied.
  • gas liquefaction apparatuses it is not limited to setting three gas liquefaction apparatuses, and more gas liquefaction apparatuses may be provided, and it is not limited to liquefying carbon dioxide, nitrogen, oxygen, for example, it may be used for liquefying ammonia gas or the like.
  • the liquid gas generated during the liquefaction may be a simple liquid gas or a mixed liquid gas, and is not limited in the present invention.
  • the liquid gas is gasified to generate electricity
  • a part of the high-pressure gas is generated, and a part of the gas can be naturally discharged into the surrounding space, and the other part can be recycled through the gas. It is prepared for recycling, and then transported back to the gas liquefaction equipment through a gas recovery pipeline matched with the gas recovery equipment, and liquid gas is again formed by liquefaction.
  • the gas outlet of the gasification device may be communicated with the gas inlet of the gas recovery device, the gas discharged from the gasification device may be recovered by the gas recovery device, and the recovered gas may be transported to the at least two through the gas recovery pipe.
  • the intake end of one or more gas liquefaction devices in the gas liquefaction device so that the discharged gas is returned to the gas liquefaction device as much as possible for liquefaction.
  • each liquid gas storage tank may be connected to a gasification device correspondingly, and accordingly, the gas outlets of each gasification device may be combined with An independent gas recovery device is connected, and the outlet end of the gas recovery pipe matched with the independent gas recovery device can directly communicate with the gas liquefaction device corresponding to the storage and liquefaction of the same gas, so that the discharged single gas can directly return to the gas.
  • Liquefaction equipment is liquefied to reduce the loss of filtration equipment.
  • liquid gas storage tank can be a closed container that can be disassembled, and the liquid gas storage tank that stores the liquid gas can be sold as a separate product. It is also possible to specially configure a storage with safety equipment for storing liquid storage tanks.

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Abstract

一种气体液化系统以及气体液化方法，该气体液化系统包括输气通道（101）、气体驱动设备（102）、按级别设置的至少两个气体液化设备（103、104、105），其中，气体驱动设备（102）用于驱动气体从输气通道（101）的进气端进入；气体液化设备（103、104、105）用于按级别的顺序对进入的气体进行液化；还包括气化设备（106），用于当任意气体液化设备（103、104、105）中的气体液化反应需要冷能时，对级别在前或级别相同、且已经得到液态气体的气体液化设备（103、104、105）的液气储存罐（103a、104a、105a）释放的液态气体进行热交换，使被释放的液态气体发生气化反应；冷能管道（107），用于将气化反应产生的冷能输送给任意气体液化设备（103、104、105），以便任意气体液化设备（103、104、105）得到冷能对气体压缩时产生的热进行热交换。该气体液化系统以及气体液化方法能够实现便捷地提供冷能以进行气体液化的目的。

Description

一种气体液化方法及系统
本申请要求于2014年2月14日提交中国专利局、申请号为201410051733.8、发明名称为“一种气体液化方法及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及气体液化领域，特别涉及一种气体液化方法及系统。
背景技术
近年来，随着各行各业的发展，液态气体的需求在不断剧增，液态气体产业得到蓬勃发展。
目前，一般采用专门的气体液化设备液化气体。气体液化设备通过不断添加额外冷能对气体压缩时产生的热进行热交换，并将气体压缩，使气体被液化。
由于气体液化设备需要不断额外添加冷能以在热交换过程中对气体降温，因此，如何提供足够的冷能一直是困扰人们的问题。
发明内容
有鉴于此，本发明的主要目的在于提供一种气体液化方法及系统以实现更加便捷地提供足够的冷能以进行气体液化的目的。
在本发明实施例的第一方面，提供了一种气体液化系统，包括：输气通道、气体驱动设备、按级别设置的至少两个气体液化设备，其中，所述气体驱动设备设置在输气通道的进气端，所述输气通道与至少两个气体液化设备的进气端连通，所述至少两个气体液化设备分别配置有各自的液气储存罐；其中，所述气体驱动设备，用于驱动气体从输气通道的进气端进入；所述按级别设置的至少两个气体液化设备，用于按级别 的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的液气储存罐；还包括：气化设备，用于当任意气体液化设备中的气体进行液化反应需要冷能时，对级别在所述任意气体液化设备之前或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；冷能管道，用于将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
在本发明实施例的第二方面，提供了一种气体液化方法，应用于包括输气通道、气体驱动设备、以及按级别设置的至少两个气体液化设备的气体液化系统，所述方法包括：将气体驱动设备设置在输气通道的进气端，将输气通道与至少两个气体液化设备的进气端连通，为所述至少两个气体液化设备分别配置各自的液气储存罐；采用气体驱动设备驱动气体从输气通道的进气端进入；采用所述按级别设置的至少两个气体液化设备，按级别的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的指定液气储存罐；当任意气体液化设备中的气体进行液化反应需要冷能时，采用气化设备对级别在所述任意气体液化设备之前或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；通过冷能管道将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
可见本发明具有如下有益效果：
本发明实施例的气体液化系统包括输气通道、气体驱动设备、按级别 设置的至少两个气体液化设备，按级别的顺序对从液化设备进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的液气储存罐，由于当任意气体液化设备中的气体液化需要冷能时，利用气化设备对级别在前的或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应，通过冷能管道将气化反应产生的冷能输送给所述任意气体液化设备，因此，所述任意气体液化设备可以得到冷能对气体压缩时产生的热进行热交换，使气体被液化，可见，上一级气体液化设备液化得到的液态气体可以为下一级气体液化设备液化气体时的热交换提供足够冷能，从而逐级利用上一级液化得到的液态气体提供冷能，无需不断额外提供冷能来源，可以更加便捷、节能地进行气体液化，进而产生以小博大的连锁效果，利于较大面积、较高效率的液化气体，进行连续生产。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1-1是本发明实施例提供的一种气体液化系统的结构示意图之一；
图1-2是本发明实施例提供的一种气体液化系统的结构示意图之二；
图2是本发明实施例提供的一种气体液化系统的结构示意图之三；
图3是本发明实施例提供的一种气体液化系统的结构示意图之四；
图4是本发明实施例提供的一种气体液化系统的结构示意图之五；
图5是本发明实施例提供的一种气体液化方法的流程示意图。
具体实施方式
为实现便捷地为气体液化提供足够的冷能的目的，本发明实施例采取了逐级液化的实现方式，即，本发明实施例提供的气体液化系统包括按级别设置的至少两个气体液化设备，本发明实施例按级别的顺序，逐个利用液化设备对从液化设备的进气端进入的气体进行液化，当任意气体液化设备中的气体进行液化反应需要冷能时，对级别在所述任意气体液化设备之前或级别相同的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应，将气化反应产生的冷能输送给所述任意气体液化设备(需要说明的是，其中，冷能如何收集与输送是本领域普通技术人员可以通晓的知识，本案不再专门说明)，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，因此，上一级气体液化设备液化得到的液态气体可以为下一级气体液化设备液化气体时的热交换提供足够冷能，从而逐级利用上一级液化得到的液态气体提供冷能，无需不断额外提供冷能来源，节省降温需要的能源，可以更加便捷、节能地进行气体液化。
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明实施例作进一步详细的说明。
【实施例一】
首先参照图1-1，图1-1为本发明实施例提供的一种气体液化系统结构示意之一。
如图1-1所示，该系统包括：输气通道101、气体驱动设备102、按级别设置的至少两个气体液化设备103、104、105，其中，所述气体驱动设备102设置在输气通道101的进气端，所述输气通道101与至少两个气体液化设备，如气体液化设备103、气体液化设备104、气体液化设备105等的 进气端连通，所述至少两个气体液化设备分别配置有各自的液气储存罐，如气体液化设备的出气端与液气储存罐的进气端连通；
其中，所述气体驱动设备102，可以用于驱动气体从输气通道101的进气端进入；
所述按级别设置的至少两个气体液化设备103、104、105，可以用于按级别的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的液气储存罐；例如，如图1-1所示的气体液化设备的级别顺序从前到后可以为气体液化设备103、104、105。
且，本发明实施例所述的气体液化系统还可以包括：
气化设备106，可以用于当任意气体液化设备中的气体进行液化反应需要冷能时，与级别在所述任意气体液化设备之前或级别相同，且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；
冷能管道107，可以用于将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
例如，可以将液气储存罐103a与冷能管道107的进气端连通，冷能管道107将冷能输送到任意气体液化设备的气缸外对其中的气体迅速降温。可以理解的是，如果仍然达不到液化的临界温度，可以利用再加入干冰等方式辅助降温。另外，在液态气体充足时，气化释放冷能的同时，气化所释放的动力还可以驱动发电机发电，所发电力可以为任意设备，如气体液化系统、电网等供电。
需要说明的是，所述气体液化设备可以为一般的气体液化设备，本发明并不限制其具体结构。例如，所述气体液化设备可以分别有各自的气缸，这些气体液化设备可以共用一个气体压缩设备，也可以分别有各自的气体压缩设备。在气体液化设备液化气体时，可以根据进入气缸中的 气体的物理属性、如液化温度、液化压力等对气体进行降温、加压使其液化。对于按级别顺序设置的第一个液化气体的气体液化设备来说，可以适时向该气体液化设备中加入一些干冰以启动降温过程，当到达气体的液化临界温度时加压。例如，如果按级别顺序设置的第一个液化气体的气体液化设备所液化的气体为二氧化碳气体，则可以在达到液化临界温度31摄氏度或低于该液化临界温度时加压，被液化的二氧化碳(部分可能形成干冰)进入液气储存罐。
可见，应用本发明实施例提供的系统，上一级气体液化设备液化得到的液态气体可以为下一级气体液化设备液化气体时的热交换提供足够冷能，从而逐级利用上一级液化得到的液态气体提供冷能，无需不断额外提供冷能来源，可以更加便捷、节能地进行气体液化。
其中，本发明实施例所提供的系统中的液气储存罐可以是高压密闭容器，各个设备的进气口、出气口均可以设置有安全阀，各个设备的运行状态和相关数据可以采集到中心控制台，再由中心控制台对本发明实施例所提供的系统的各个设备进行统一的控制以进行气体液化。并且，为了保证系统运行的安全，可以在系统的一些位置设置报警自动减压设备。
可以理解的是，气化反应产生的冷能在通过冷能管道107输送给气体液化设备之前，也可以暂时储存于冷能储存罐，当任意气体液化设备中的气体进行液化反应需要冷能时将冷能输送给所述任意气体液化设备。
另外，如图1-2所示，本发明实施例提供的系统还可以包括与所述气体液化设备连通的隔热管道(如图1-2所示的隔热管道103c、104c、105c)，用于收集液化产生的热能并将热能输送到热能储存罐(如图1-2所示的热能储存罐103d、104d、105d)进行储存，以便在气化设备对液态气体进行热交换时提供热能。例如，在任意气体液化设备中的气体被液化过程中，液化产生的热能可以通过隔热管道收集到隔热的热能储存 罐，如图1-2所示，气体液化设备103对气体液化时产生的热能可以通过隔热管道103c收集到隔热的热能储存罐103d，气体液化设备104对气体液化时产生的热能可以通过隔热管道104c收集到隔热的热能储存罐104d，气体液化设备105对气体液化时产生的热能可以通过隔热管道105c收集到隔热的热能储存罐105d，从而当气化设备106对液态气体进行热交换使其气化的过程中，可以为热交换过程提供需要的热能。例如，可以通过隔热管道将热能储存罐中的热能通过如水、空气等介质传输到气化设备中，从而减少或无需额外提供热能。在任意液气储存罐中的液态气体被气化过程中，气化产生的冷能也均可以收集到隔热的冷能储存罐中。需要说明的是，其中，冷能、热能如何收集与运输是该领域普通技术人员可以通晓的知识，本案不再专门说明。通过收集冷能以及热能，液化产生的热能和气化产生的冷能各自在系统中发挥作用，在液化和气化某一阶段进行冷热中和，提高效率。
【实施例二】
在本发明实施例一种可能的实现方式中，可以应用到风场中解决目前风能所存在并网瓶颈的问题。具体地，参见图2所示的气体液化系统结构示意图之三。
如图2所示，所述至少两个气体液化设备的液气储存罐中，至少一个液气储存罐的出气端与气化设备106连通(例如，可以如图2所示将至少两个气体液化设备的液气储存罐的出气端，如液气储存罐103a、104a、105a的出气端，均与气化设备连通，或者，将级别非排序在最前的气体液化设备的液气储存罐的出气端，如图2所示的液气储存罐104a、105a，与气化设备连通)；所述气化设备106，可以用于当风场中的风机机组对电网100的供电不足时，将与气化设备连通的任意液气储存罐中的液态气体进行气化；且还可以包括发电机111，用于受气化设备106释放的气体驱动，向所述电网100供电。例如，其中，所述气体驱动设备102具体可以用于在风场中的风力超过特定风力时，驱动气体从输气通道的进气端进入。
可见，对于风能不稳定或风机机组自身故障等问题造成的并网瓶颈问题，本发明实施例可以在风场中选定合适的用于液化空气的操作区域，在操作区域中应用本发明实施例提供的系统，利用多余的风能进行空气液化，当风能不足、停止、或风机机组一部分或全部故障时，将液态气体进行气化，释放动力驱动发电机发电向电网供电，从而延长向电网供电，减少风能变化较大较快时对电网的冲击。
需要说明的是，本发明实施例中，所述气体液化系统的电力来源可以为风场中的风机机组所发的电力，例如，可以为气体驱动设备102、气体液化设备103、104、105等提供电力，所述气体液化系统的电力来源也可以为其他能源所发电力，例如，峰谷多余电能、海洋潮汐能、地热能、太阳能等等。
例如，风场中的风机机组所发的电力为所述气体液化系统提供电力来源的具体实现方式可以有两种，一种是，风场中的风机机组按照指定功率发电，其中，指定功率为多少可以根据电网的需要设置，当风能较大超过指定功率时，可以将超出指定功率的风能集中到操作区域转化为电力作为气体液化系统的电力来源；另一种是，可以在风场中选定部分比例的风机机组，在风能较大时，将这些选定部分比例的风机机组专门为用于液化空气的气体液化系统提供电力来源。无论采取哪一种实现方式均可。并且，当风场中的风能不够持续时，还可以将断断续续的风能转化为电能储存到蓄电池中，从而当蓄电池中的电力足够启动气体液化系统时，为所述气体液化系统提供电力来源，开始进行空气液化。
需要说明的是，该实施例所述气化设备106可以包括一个或多个气化设备，例如，可以将各个气体液化设备的液气储存罐的出气端均与一个气化设备连通，再例如，可以将各个气体液化设备的液气储存罐的出气端分别与各自对应的气化设备连通，在本发明中并不进行限制。其中，本发明实施例所述的气化设备可以包含热交换器在内等设备。
其中，当风机机组对电网的供电不足时，具体释放哪一种液气储存罐中的气体进行发电，释放多少，可以根据实际场景下平抑电网稳定和 延长发电的需要选取，在本发明中并不进行限制。并且，释放的气体驱动发电机向所述电网供电的同时，也可以与其他风机机组的风电一同输出到电网，消除风机机组的风电的变化对电网的冲击。例如，在预测即将无风时，可以释放液气储存罐中的气体驱动发动机向电网供电，从而可以在风机机组无法供电断网前，及时使电网获得电力来源使风机机组安全断网，最大程度上消除对电网的影响。在预测风力较大，风能即将超过指定功率时，开启气体驱动设备驱动空气进入输气通道，开始液化空气，将多余风能转化为液态气体的内能进行存储。
需要说明的是，在实施例也可以结合如图1-2所示的实施例，各个气体液化设备与隔热管道连通，将液化产生的热能储存于热能储存罐，从而为气化设备气化气体时提供热能。
【实施例三】
结合上述任一可能的实施例，当所述气体为混合气体，如风场中的自然空气时，本发明实施例提供的系统可以从混合气体中分离出其中的几种单一气体，将这些单一气体分别单独进行液化。具体实现方式可以参见图3所示本发明实施例提供的气体液化系统的结构示意图之四。
如图3所示，本发明实施例提供的气体液化系统还可以包括为每个气体液化设备分别设置的用于分离出单一气体的过滤设备；
其中，所述至少两个气体液化设备按级别从前到后的顺序，从所述输气通道的进气端开始，逐个经由为其设置的过滤设备与输气通道连通，其中，气体液化设备的进气端与为其设置的过滤设备的分离口连通，各个过滤设备的进气口与输气通道连通(例如，按照级别从前到后的顺序，从输气通道101的进气端开始，气体液化设备103经由过滤设备103b与输气通道连通，气体液化设备104经由过滤设备104b与输气通道连通，气体液化设备105经由过滤设备105b与输气通道连通)；
对于从输气通道的进气端开始，与输气通道连通的第一个气体液化设备，该第一个气体液化设备的过滤设备的进气口与输气通道进气端连通，对于除了第一个气体液化设备之外的任意气体液化设备，该任意气 体液化设备的过滤设备的进气口与该任意气体液化设备之前的上一气体液化设备的过滤设备的排气口通过输气通道连通(例如，第一个气体液化设备103的过滤设备103b的进气口与输气通道101进气端连通，气体液化设备104的过滤设备104b的进气口与过滤设备103b的排气口通过输气通道101连通，气体液化设备105的过滤设备105b的进气口与过滤设备104b的排气口通过输气通道101连通)；
其中，所述过滤设备，如过滤设备103b、104b、105b，用于对从过滤设备的进气口进入的气体进行过滤，分离出的单一气体从分离口进入气体液化设备，剩余气体从排气口排出。
另外，为了使进入气体液化设备的气体更加纯净，还可以在气体驱动设备的换气扇等入口处设置用于过滤沙尘等细小杂质的空气过滤装置。
例如，所述气体可以为风场中的自然空气，如图3所示，其中所述至少两个气体液化设备可以包括用于液化二氧化碳的二氧化碳液化设备103、用于液化氧气的氧气液化设备104以及用于液化氮气的氮气液化设备105，其中，二氧化碳液化设备103为从输气通道进气端开始，与输气通道连通的第一个气体液化设备，氧气液化设备104为从输气通道进气端开始，与输气通道连通的第二个气体液化设备，氮气液化设备105为从输气通道进气端开始，与输气通道连通的第三个气体液化设备。
当然，需要说明的是，本发明实施例中并不局限于这一种实现方式，各个气体液化设备用于收纳、液化哪一种单一气体均可，在本发明中并不进行限制。
在该实现方式中，例如，二氧化碳液化设备进气端设置的过滤设备103b中可以包含用于分离二氧化碳的过滤膜，氧气液化设备进气端设置的过滤设备104b中可以包含用于分离氧气的过滤膜，氮气液化设备的进气端设置的过滤设备105b中可以包含用于分离氮气的过滤膜。
例如，二氧化碳液化设备级别可以排序在所述氧气液化设备以及所述氮气液化设备的级别之前，所述氧气液化设备以及所述氮气液化设备 的级别可以相同；也可以不同，例如，氧气液化设备的级别在氮气液化设备的级别之前，以便更加容易被液化的氧气在氮气之前被液化。其中，所述气化设备106，可以用于当氧气液化设备104中的气体进行液化反应需要冷能时，与二氧化碳液化设备103配置的液气储存罐103a释放的液态二氧化碳进行热交换使其发生气化反应；
所述冷能管道107，可以用于将液态二氧化碳气化产生的冷能输送给所述氧气液化设备104，以便所述氧气液化设备104得到冷能与氧气压缩时产生的热进行热交换，通过所述热交换使氧气液化设备中的氧气较快达到或低于氧气的液化临界温度，使氧气被液化，液化反应得到的液态氧进入为所述氧气液化设备104配置的液气储存罐104a；
所述气化设备106，还可以用于当二氧化碳液化设备103的液气储存罐103a释放的液态二氧化碳气化产生的冷能不足时，对已经得到液态氧的液气储存罐104a释放的部分液态氧进行热交换使其发生气化反应；
所述冷能管道107，还可以用于将液态氧气化产生的冷能输送给所述氧气液化设备104和/或氮气液化设备105，以便所述氧气液化设备104和/或氮气液化设备105得到冷能与气体压缩时产生的热进行热交换，通过所述热交换使氧气液化设备和/或氮气液化设备中的气体较快达到或低于气体的液化临界温度，使其中的气体被液化。
下面，结合上述实施例，对本发明实施例提供的系统液化二氧化碳、氧气、氮气的整个过程进行详细介绍。例如：
集中到操作区域的风电电力可以向气体驱动设备102供电以及气体液化设备103、104、105供电；
气体驱动设备102驱动空气从输气通道进气端进入，空气经过过滤设备103b过滤后，分离出的二氧化碳气体从过滤设备103b的分离口进入二氧化碳液化设备103，当二氧化碳液化设备中的二氧化碳浓度达到一定浓度时，二氧化碳液化设备103对其中的气体加压，可以在加压过程中加入适当干冰，用于启动降温过程，当二氧化碳液化设备中气体温度达到或低于二氧化碳液化的临界温度时，继续加压，二氧化碳被液化， 液化后的二氧化碳进入与二氧化碳液化设备103连通的液气储存罐103a；
其中，在液化二氧化碳的过程中，如果集中到操作区域的风电电力还有剩余，可以继续作为电力来源向气体驱动设备供电以及气体液化设备供电，如果没有，还可以使用备用蓄电池接着为作为供电装置的电力来源向气体驱动设备供电以及气体液化设备供电；
从过滤设备103b的排气口排出的剩余气体进入过滤设备104b的进气口过滤，分离出的氧气气体从过滤设备104b的分离口进入氧气液化设备104。当氧气液化设备104中的氧气浓度达到一定浓度时，液气储存罐103a收集了一定浓度的液态二氧化碳之后，对二氧化碳液化设备103的液气储存罐103a释放的液态二氧化碳进行热交换，使被释放的液态二氧化碳发生气化反应，通过冷能管道107将冷能输送给氧气液化设备104，以便所述氧气液化设备104得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使氧气液化设备中的氧气达到或低于氧气的液化临界温度，使氧气被液化，液化反应得到的液态氧(可能包括部分固态氧)进入液气储存罐104b；
其中，如果液态二氧化碳不足，还可以利用气化设备106将液气储存罐104b中的部分液态氧进行气化反应，通过冷能管道107将冷能输送给所述氧气液化设备104；
从过滤设备104b的排气口排出的剩余气体进入过滤设备105b的进气口过滤，分离出的氮气气体从过滤设备105b的分离口进入氮气液化设备105。当氮气液化设备105中的氮气浓度达到一定浓度时，液气储存罐103a或液气储存罐104a有一定的液态气体时，对氮气液化设备105中的气体进行液化，对液气储存罐103a或液气储存罐104a释放的液态气体进行热交换，使被释放的液态气体发生气化反应，通过冷能管道107将冷能输送给氮气液化设备105，以便所述氮气液化设备105得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使氮气液化设备中的氮气较快达到或低于临界温度，使氮气被液化，液化反应得到的液态 氮(一部分可能出现固态氮)进入液气储存罐105a。
需要说明的是，在对液态二氧化碳、液态氧进行气化时，如果液态气体充足，还可以使发电机111受气化设备106释放的气体驱动向气体驱动设备102和/或气体液化设备103、104、105供电，需要说明的是，发电机111还可以向本发明实施例提供的系统中的任意设备提供电力，或同时向电网供电，在本发明中并不进行限制。
当然，在本发明实施例中，并不仅限于设置三个气体液化设备，还可以设置更多气体液化设备，并不仅限于液化二氧化碳、氮气、氧气，例如，还可以用于液化氨气等等。液化过程中产生的液态气体可以为单纯的液态气体，也可以为混合液态气体，在本发明中并不进行限制。
例如，在该实现方式中，可以释放液气储存罐中的部分液态氧、和/或释放气化液化储存罐中的部分液态氮，利用气化设备对释放的液态氧和/或液态氮进行气化反应，利用气化反应释放的动力驱动发电机发电，所发电力还可以继续用于向本发明实施例的气体液化系统供电，使该系统继续进行气体液化，从而周而复始不断产生液态氧和液态氮等工业品。当然整个过程可以包括人为调控和管理。本发明中并不进行限制。
需要说明的是，在实施例也可以结合如图1-2所示的实施例，各个气体液化设备与隔热管道连通，将液化产生的热能储存于热能储存罐，从而为气化设备气体时提供热能。
【实施例四】
结合上述任一可能的实施例，液态气体气化发电后形成高压气体发电后一部分可以自然排放到周围空间，另一部分则可以通过气体回收设备例如吸风机等回收，再通过与气体回收设备配套的气体回收管道输送回气体液化设备，经过液化再次形成液态气体。例如，具体实现方式可以参见图4所示本发明实施例提供的气体液化系统的结构示意图之五。
如图4所示，所述气化设备106的出气端还可以与气体回收设备109的进气端连通，所述气体回收设备109，用于回收气化设备106排放的气体，通过气体回收管道110将回收的气体输送到所述至少两个气体液 化设备中的一个或多个气体液化设备的进气端，以使被排放的气体尽可能多地重新回到气体液化设备进行液化。
例如，如果每个气体液化设备各用于收纳、液化不同的单一气体，则可以将每个液气储存罐都对应连通一个气化设备，相应地，每个气化设备的出气端均可以与一个独立的气体回收设备连通，该独立的气体回收设备配套的气体回收管道的出气端可以直接与对应收纳、液化相同气体的气体液化设备相连通，从而被排放的单一气体可以重新回到气体液化设备进行液化，减少了对过滤设备的损耗。其中，气体回收设备例如可以包含真空抽气泵等的装置，气体回收管道对气体的回收可以通过有关控制设备对回收管道的阀门等相关部件的控制进行气体回收的自动控制，本发明不再赘述。
本领域技术人员可以理解的是，液气储存罐可以为能够被拆卸的密闭容器，储存了液态气体的液气储存罐可以作为单独的产品进行出售。还可以专门配置具有安全设备的储存库，用于存放液气储存罐。气体液化设备的气缸的大小根据实际需要确定，本发明中并不限制。存储液态气体的液气储存罐的大小、个数、容器材质可以根据实际需要确定。例如，液气储存罐可以为钢铁储存罐，或者，可以为混凝土浇筑储存罐，可以设置在地上，也可以在半地下或地下等，本发明中不进行限制。另外，气化设备106气化液态气体时释放的动力还可以作为其他设备的动力来源，例如，可以作为动力来源驱动挖掘设备挖掘煤矿、驱动交通运输工具等。
需要说明的是，在实施例也可以结合如图1-2所示的实施例，各个气体液化设备与隔热管道连通，将液化产生的热能储存于热能储存罐，从而为气化设备气化气体时提供热能。
【实施例五】
与上述气体液化系统相应地，本发明实施例还提供一种气体液化方法。该方法可以应用于包括输气通道、气体驱动设备、以及按级别设置 的至少两个气体液化设备的气体液化系统。例如，参照图5，图5为本发明实施例提供的一种气体液化方法流程示意图之一。该如图5所示，所述方法可以包括：
S510、将气体驱动设备设置在输气通道的进气端，将输气通道与至少两个气体液化设备的进气端连通，为所述至少两个气体液化设备分别配置各自的液气储存罐；
S520、采用气体驱动设备驱动气体从输气通道的进气端进入；
S530、采用所述按级别设置的至少两个气体液化设备，按级别的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的指定液气储存罐；
S540、当任意气体液化设备中的气体进行液化反应需要冷能时，采用气化设备对级别在所述任意气体液化设备之前或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；
S550、通过冷能管道将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
需要说明的是，所述气体液化设备可以为一般的气体液化设备，本发明并不限制其具体结构。例如，所述气体液化设备可以分别有各自的气缸，这些气缸可以共用一个气体压缩设备，也可以分别有各自的气体压缩设备。在气体液化设备液化气体时，可以根据进入气缸中的气体的物理属性、如液化温度、液化压力等对气体进行降温、加压使其液化。对于按级别顺序第一个液化气体的气体液化设备来说，可以适时向该气体液化设备中加入一些干冰以启动降温过程，当到达或低于气体的液化临界温度时加压。例如，如果按级别顺序第一个液化气体的气体液化设备所液化的气体为二氧化碳气体，则可以在达到液化临界温度31摄氏度或 低于该液化临界温度时加压，被液化的二氧化碳(部分可能形成干冰)进入液气储存罐。
可见，应用本发明实施例提供的方法，可以由上一级气体液化设备液化得到的液态气体为下一级气体液化设备液化气体时的热交换提供足够冷能，从而逐级利用上一级液化得到的液态气体提供冷能，无需不断额外提供冷能来源，可以更加便捷、节能地进行气体液化。
可以理解的是，气化反应产生的冷能在通过冷能管道107输送给气体液化设备之前，也可以暂时储存于冷能储存罐，当任意气体液化设备中的气体进行液化反应需要冷能时将冷能输送给所述任意气体液化设备。
另外，本发明实施例提供的方法还可以将所述气体液化设备与隔热管道连通，利用隔热管道收集液化产生的热能并将热能输送到热能储存罐进行储存，以便在气化设备对液态气体进行热交换时提供热能。例如，可以通过隔热管道将热能储存罐中的热能通过如水、空气等介质传输到气化设备中，从而减少或无需额外提供热能。
【实施例六】
在本发明实施例一种可能的实现方式中，可以应用到风场中解决目前风能所存在并网瓶颈的问题。具体地，例如：
可以将所述至少两个气体液化设备的液气储存罐中，至少一个液气储存罐的出气端与气化设备连通(例如，可以将至少两个气体液化设备的液气储存罐的出气端均与气化设备连通，或者，将级别非排序在最前的气体液化设备的液气储存罐的出气端与气化设备连通)；当风场中的风机机组对电网的供电不足时，将与气化设备连通的任意液气储存罐中的液态气体进入气化设备进行气化；利用气化设备释放的气体驱动发电机向所述电网供电。
可见，对于风能不稳定或风机机组自身故障等问题造成的并网瓶颈问题，本发明实施例可以在风场中选定合适的用于液化空气的操作区域，在操作区域中应用本发明实施例提供的系统，利用多余的风能进行空气 液化，当风能不足、停止、或风机机组一部分或全部故障时，将液态气体进行气化，释放动力驱动发电机发电向电网供电，从而延长向电网供电，减少风能变化较大较快时对电网的冲击。
例如，风场中的风机机组所发的电力为所述气体液化系统提供电力来源的具体实现方式可以有两种，一种是，风场中的风机机组按照指定功率发电，其中，指定功率为多少可以根据电网的需要设置，当风能较大超过指定功率时，可以将超出指定功率的风能集中到操作区域转化为电力作为气体液化系统的电力来源；另一种是，可以在风场中选定部分比例的风机机组，在风能较大时，将这些选定部分比例的风机机组专门为用于液化空气的气体液化系统提供电力来源。无论采取哪一种实现方式均可。并且，当风场中的风能不够持续时，还可以将断断续续的风能转化为电能储存到蓄电池中，从而当蓄电池中的电力足够启动气体液化系统时，为所述气体液化系统提供电力来源，开始进行空气液化。
需要说明的是，该实施例所述气化设备可以包括一个或多个气化设备，例如，可以将各个气体液化设备的液气储存罐的出气端均与一个气化设备连通，再例如，可以将各个气体液化设备的液气储存罐的出气端分别与各自对应的气化设备连通，在本发明中并不进行限制。其中，本发明实施例所述的气化设备可以包含热交换器在内等设备。
其中，当风机机组对电网的供电不足时，具体释放哪一种液气储存罐中的气体，释放多少，可以根据实际场景下平抑电网稳定和延长发电的需要选取，在本发明中并不进行限制。并且，释放的气体驱动发电机向所述电网供电的同时，也可以与其他风机机组的风电一同输出到电网，消除风机机组的风电的变化对电网的冲击。例如，在预测即将无风时，可以释放液气储存罐中的气体驱动发动机向电网供电，从而可以在风机机组无法供电断网前，及时使电网获得电力来源使风机机组安全断网，最大程度上消除对电网的影响。在预测风力较大，风能即将超过指定功率时，开启气体驱动设备驱动空气进入输气通道，开始液化空气，将多余风能转化为液态气体进行存储。
【实施例七】
结合上述任一可能的实施例，当所述气体为混合气体，如风场中的自然空气时，本发明实施例提供的系统可以从混合气体中分离出其中的几种单一气体，将这些单一气体分别单独进行液化。具体地，例如：
可以为每个气体液化设备分别设置用于分离出单一气体的过滤设备；
将所述至少两个气体液化设备按级别从前到后的顺序，从所述输气通道的进气端开始，逐个经由为其设置的过滤设备与输气通道连通，其中，气体液化设备的进气端与为其设置的过滤设备的分离口连通，各个过滤设备分别的进气口与输气通道连通；
对于从输气通道的进气端开始，与输气通道连通的第一个气体液化设备，将该第一个气体液化设备的过滤设备的进气口与输气通道进气端连通，对于除了第一个气体液化设备之外的任意气体液化设备，将该任意气体液化设备的过滤设备的进气口与该任意气体液化设备之前的上一气体液化设备的过滤设备的排气口通过输气通道连通；
利用过滤设备，对从过滤设备的进气口进入的气体进行过滤，分离出的单一气体从分离口进入气体液化设备，剩余气体从排气口排出。
例如，所述气体可以为风场中的自然空气。所述至少两个气体液化设备可以包括用于液化二氧化碳的二氧化碳液化设备、用于液化氧气的氧气液化设备以及用于液化二氮气的氮气液化设备，其中，二氧化碳液化设备为从输气通道进气端开始，与输气通道连通的第一个气体液化设备，氧气液化设备为从输气通道进气端开始，与输气通道连通的第二个气体液化设备，氮气液化设备为从输气通道进气端开始，与输气通道连通的第三个气体液化设备。
在该实现方式中，例如，二氧化碳液化设备进气端设置的过滤设备中可以包含用于分离二氧化碳的过滤膜，氧气液化设备进气端设置的过滤设备中可以包含用于分离氧气的过滤膜，氮气液化设备的进气端设置 的过滤设备中可以包含用于分离氮气的过滤膜。
例如，所述二氧化碳液化设备级别可以排序在所述氧气液化设备以及所述氮气液化设备的级别之前，所述氧气液化设备以及所述氮气液化设备的级别可以相同；也可以不同，例如，氧气液化设备的级别在氮气液化设备的级别之前，以便氧气在氮气之前被液化。
当氧气液化设备中的气体进行液化反应需要冷能时，采用气化设备对二氧化碳液化设备配置的液气储存罐释放的液态二氧化碳进行热交换使其发生气化反应；
通过冷能管道将液态二氧化碳气化产生的冷能输送给氧气液化设备，以便所述氧气液化设备得到冷能对氧气压缩时产生的热进行热交换，通过所述热交换使氧气液化设备中的氧气较快达到或低于氧气的液化临界温度，使氧气被液化，液化反应得到的液态氧进入为所述氧气液化设备配置的液气储存罐；
当二氧化碳液化设备的液气储存罐释放的液态二氧化碳气化产生的冷能不足时，采用气化设备对已经得到液氧的液气储存罐释放的部分液态氧进行热交换使其发生气化反应；
通过冷能管道将液态氧气化产生的冷能输送给氧气液化设备和/或氮气液化设备，以便所述氧气液化设备和/或氮气液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使氧气液化设备和/或氮气液化设备中的气体较快达到或低于气体的液化临界温度，使其中的气体被液化。
当然，在本发明实施例中，并不仅限于设置三个气体液化设备，还可以设置更多气体液化设备，并不仅限于液化二氧化碳、氮气、氧气，例如，还可以用于液化氨气等等。液化过程中产生的液态气体可以为单纯的液态气体，也可以为混合液态气体，在本发明中并不进行限制。
【实施例八】
结合上述任一可能的实施例，液态气体气化发电后形成高压气体发电后一部分可以自然排放到周围空间，另一部分则可以通过气体回收设 备回收，再通过与气体回收设备配套的气体回收管道输送回气体液化设备，经过液化再次形成液态气体。例如，还可以还将所述气化设备的出气端与气体回收设备的进气端连通，利用气体回收设备回收气化设备排放的气体，通过气体回收管道将回收的气体输送到所述至少两个气体液化设备中的一个或多个气体液化设备的进气端；以使被排放的气体尽可能多地重新回到气体液化设备进行液化。
例如，如果每个气体液化设备各用于收纳、液化不同的单一气体，则可以将每个液气储存罐都对应连通一个气化设备，相应地，每个气化设备的出气端均可以与一个独立的气体回收设备连通，该独立的气体回收设备配套的气体回收管道的出气端可以直接与对应收纳、液化相同气体的气体液化设备相连通，从而被排放的单一气体可以直接重新回到气体液化设备进行液化，减少了对过滤设备的损耗。
本领域技术人员可以理解的是，液气储存罐可以为能够被拆卸的密闭容器，储存了液态气体的液气储存罐可以作为单独的产品进行出售。还可以专门配置具有安全设备的储存库，用于存放液气储存罐。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改 进等，均包含在本发明的保护范围内。本发明的保护范围以后附的权利要求为准。

Claims (14)

  1. 一种气体液化系统，其特征在于，包括：输气通道、气体驱动设备、按级别设置的至少两个气体液化设备，其中，所述气体驱动设备设置在输气通道的进气端，所述输气通道与至少两个气体液化设备的进气端连通，所述至少两个气体液化设备分别配置有各自的液气储存罐；
    其中，所述气体驱动设备，用于驱动气体从输气通道的进气端进入；
    所述按级别设置的至少两个气体液化设备，用于按级别的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的液气储存罐；
    还包括：
    气化设备，用于当任意气体液化设备中的气体进行液化反应需要冷能时，对级别在所述任意气体液化设备之前或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；
    冷能管道，用于将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
  2. 根据权利要求1所述的系统，其特征在于，所述至少两个气体液化设备的液气储存罐中，至少一个液气储存罐的出气端与气化设备连通；
    所述气化设备，还用于当风场中的风机机组对电网的供电不足时，将与气化设备连通的任意液气储存罐中的液态气体进行气化；
    还包括发电机，用于受气化设备释放的气体驱动，向所述电网供电。
  3. 根据权利要求1或2任一项所述的系统，其特征在于，还包括：与所述气体液化设备连通的隔热管道，用于收集液化产生的热能并将热 能输送到热能储存罐进行储存，以便在气化设备对液态气体进行热交换时提供热能。
  4. 根据权利要求1或2任一项所述的系统，其特征在于，还包括：为每个气体液化设备分别设置的用于分离出单一气体的过滤设备；
    其中，所述至少两个气体液化设备按级别从前到后的顺序，从所述输气通道的进气端开始，逐个经由为其设置的过滤设备与输气通道连通，其中，气体液化设备的进气端与为其设置的过滤设备的分离口连通，各个过滤设备的进气口与输气通道连通；
    对于从输气通道的进气端开始，与输气通道连通的第一个气体液化设备，该第一个气体液化设备的过滤设备的进气口与输气通道进气端连通，对于除了第一个气体液化设备之外的任意气体液化设备，该任意气体液化设备的过滤设备的进气口与该任意气体液化设备之前的上一气体液化设备的过滤设备的排气口通过输气通道连通；
    其中，所述过滤设备，用于对从进气口进入的气体进行过滤，分离出的单一气体从分离口进入气体液化设备，剩余气体从排气口排出。
  5. 根据权利要求4所述的系统，其特征在于，所述气体为风场中的自然空气；
    所述至少两个气体液化设备包括用于液化二氧化碳的二氧化碳液化设备、用于液化氧气的氧气液化设备以及用于液化氮气的氮气液化设备，其中，二氧化碳液化设备为从输气通道进气端开始，与输气通道连通的第一个气体液化设备，氧气液化设备为从输气通道进气端开始，与输气通道连通的第二个气体液化设备，氮气液化设备为从输气通道进气端开始，与输气通道连通的第三个气体液化设备。
  6. 根据权利要求5所述的系统，其特征在于，所述二氧化碳液化设备级别排序在所述氧气液化设备以及所述氮气液化设备的级别之前，所述氧气液化设备级别排序在所述氮气液化设备的级别之前；
    所述气化设备，用于当氧气液化设备中的气体进行液化反应需要冷能时，对二氧化碳液化设备配置的液气储存罐释放的液态二氧化碳进行热交换使其发生气化反应；
    所述冷能管道，用于将液态二氧化碳气化产生的冷能输送给所述氧气液化设备，以便所述氧气液化设备得到冷能对氧气压缩时产生的热进行热交换，通过所述热交换使氧气液化设备中的氧气达到或低于氧气的液化临界温度，使氧气被液化，液化反应得到的液态氧进入为所述氧气液化设备配置的液气储存罐；
    所述气化设备，还用于当二氧化碳液化设备的液气储存罐释放的液态二氧化碳气化产生的冷能不足时，对已得到液态氧的液气储存罐释放的液态氧进行热交换使其发生气化反应；
    所述冷能管道，还用于将液态氧气化产生的冷能输送给所述氧气液化设备和/或氮气液化设备，以便所述氧气液化设备和/或氮气液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使氧气液化设备和/或氮气液化设备中的气体达到或低于气体的液化临界温度，使气体被液化。
  7. 根据权利要求1或2任一项所述的系统，其特征在于，所述气化设备的出气端还与气体回收设备的进气端连通，所述气体回收设备，用于回收气化设备排放的气体，通过回收管道将回收的气体输送到所述至少两个气体液化设备中的一个或多个气体液化设备的进气端，以使被排放的气体重新回到气体液化设备进行液化。
  8. 一种气体液化方法，应用于包括输气通道、气体驱动设备、以及按级别设置的至少两个气体液化设备的气体液化系统，其特征在于，所述方法包括：
    将气体驱动设备设置在输气通道的进气端，将输气通道与至少两个气体液化设备的进气端连通，为所述至少两个气体液化设备分别配置各 自的液气储存罐；
    采用气体驱动设备驱动气体从输气通道的进气端进入；
    采用所述按级别设置的至少两个气体液化设备，按级别的顺序，对从液化设备的进气端进入的气体进行液化，液化反应得到的液态气体进入为其配置的指定液气储存罐；
    当任意气体液化设备中的气体进行液化反应需要冷能时，采用气化设备对级别在所述任意气体液化设备之前或级别相同、且已经得到液态气体的气体液化设备的液气储存罐释放的液态气体进行热交换，使被释放的液态气体发生气化反应；
    通过冷能管道将气化反应产生的冷能输送给所述任意气体液化设备，以便所述任意气体液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使所述任意气体液化设备中的气体达到或低于该气体的液化临界温度，使气体被液化，液化反应得到的液态气体进入为所述任意气体液化设备配置的液气储存罐。
  9. 根据权利要求8所述的方法，其特征在于，将所述至少两个气体液化设备的液气储存罐中，至少一个液气储存罐的出气端与气化设备连通；
    当风场中的风机机组对电网的供电不足时，将与气化设备连通的任意液气储存罐中的液态气体进入气化设备进行气化；
    利用气化设备释放的气体驱动发电机向所述电网供电。
  10. 根据权利要求8或9任一项所述的方法，其特征在于，还包括：
    将所述气体液化设备与隔热管道连通；
    利用隔热管道收集液化产生的热能并将热能输送到热能储存罐进行储存，以便在气化设备对液态气体进行热交换时提供热能。
  11. 根据权利要求8或9任一项所述的方法，其特征在于，还包括：
    为每个气体液化设备分别设置用于分离出单一气体的过滤设备；
    将所述至少两个气体液化设备按级别从前到后的顺序，从所述输气通道的进气端开始，逐个经由为其设置的过滤设备与输气通道连通，其中，气体液化设备的进气端与为其设置的过滤设备的分离口连通，各个过滤设备分别的进气口与输气通道连通；
    对于从输气通道的进气端开始，与输气通道连通的第一个气体液化设备，将该第一个气体液化设备的过滤设备的进气口与输气通道进气端连通，对于除了第一个气体液化设备之外的任意气体液化设备，将该任意气体液化设备的过滤设备的进气口与该任意气体液化设备之前的上一气体液化设备的过滤设备的排气口通过输气通道连通；
    利用过滤设备，对从过滤设备的进气口进入的气体进行过滤，分离出的单一气体从分离口进入气体液化设备，剩余气体从排气口排出。
  12. 根据权利要求11所述的方法，其特征在于，所述气体为风场中的自然空气；
    所述至少两个气体液化设备包括用于液化二氧化碳的二氧化碳液化设备、用于液化氧气的氧气液化设备以及用于液化二氮气的氮气液化设备，其中，二氧化碳液化设备为从输气通道进气端开始，与输气通道连通的第一个气体液化设备，氧气液化设备为从输气通道进气端开始，与输气通道连通的第二个气体液化设备，氮气液化设备为从输气通道进气端开始，与输气通道连通的第三个气体液化设备。
  13. 根据权利要求12所述的方法，其特征在于，所述二氧化碳液化设备级别排序在所述氧气液化设备以及所述氮气液化设备的级别之前，所述氧气液化设备级别排序在所述氮气液化设备的级别之前；
    当氧气液化设备中的气体进行液化反应需要冷能时，采用气化设备对二氧化碳液化设备配置的液气储存罐释放的液态二氧化碳进行热交换使其发生气化反应；
    通过冷能管道将液态二氧化碳气化产生的冷能输送给氧气液化设 备，以便所述氧气液化设备得到冷能对氧气压缩时产生的热进行热交换，通过所述热交换使氧气液化设备中的氧气达到或低于氧气的液化临界温度，使氧气被液化，液化反应得到的液态氧进入为所述氧气液化设备配置的液气储存罐；
    当二氧化碳液化设备的液气储存罐释放的液态二氧化碳气化产生的冷能不足时，采用气化设备对已得到液态氧的液气储存罐释放的液态氧进行热交换使其发生气化反应；
    通过冷能管道将液态氧气化产生的冷能输送给氧气液化设备和/或氮气液化设备，以便所述氧气液化设备和/或氮气液化设备得到冷能对气体压缩时产生的热进行热交换，通过所述热交换使氧气液化设备和/或氮气液化设备中的气体达到或低于气体的液化临界温度，使气体被液化。
  14. 根据权利要求8或9任一项所述的方法，其特征在于，还将所述气化设备的出气端与气体回收设备的进气端连通；
    利用气体回收设备回收气化设备排放的气体，通过回收管道将回收的气体输送到所述至少两个气体液化设备中的一个或多个气体液化设备的进气端，以使被排放的气体重新回到气体液化设备进行液化。
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