CN107702432A - Gas preparation system and the system to be generated electricity using air separation and Preparation equipment - Google Patents

Gas preparation system and the system to be generated electricity using air separation and Preparation equipment Download PDF

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Publication number
CN107702432A
CN107702432A CN201711080782.4A CN201711080782A CN107702432A CN 107702432 A CN107702432 A CN 107702432A CN 201711080782 A CN201711080782 A CN 201711080782A CN 107702432 A CN107702432 A CN 107702432A
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China
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gas
levels
medium
condenser
cooling
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CN201711080782.4A
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CN107702432B (en
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翁志远
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/06Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants 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
    • F01K25/10Plants 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Heat energy recycle technical field is prepared the present invention relates to gas, more particularly to a kind of gas preparation system and utilizes air separation and the system that is generated electricity of Preparation equipment.The gas preparation system prepares pipeline and heat energy utilization pipeline including gas;Gas prepares gas piping entrance, gas pre-cooler and the gas tube outlet that pipeline includes being sequentially communicated;Heat energy utilization pipeline includes N number of circulation loop;When N is 1, first circulation loop includes gas pre-cooler, first turbine, first-stage condenser and level liquid pump;During N >=2, N circulation loops include 1 grade of condenser of N, N level steam turbines, N levels condenser and N level liquid pumps.The system to be generated electricity using air separation and Preparation equipment includes gas preparation system.Gas preparation system provided by the invention and the system to be generated electricity using air separation and Preparation equipment, for solving the technical problem of thermal waste present in prior art.

Description

Gas preparation system and the system to be generated electricity using air separation and Preparation equipment
Technical field
The present invention relates to gas to prepare heat energy recycle technical field, more particularly to a kind of gas preparation system and utilization The system that air is separated and Preparation equipment is generated electricity.
Background technology
Space division, it is exactly production oxygen, nitrogen, also argon gas, rare gas for each component gas in air is separated A set of industrial equipment of helium, neon, argon, krypton, xenon, radon etc..The pre-cooler of existing space division is discharged heat energy using water-cooling pattern Into air, do not utilized well, cause the waste of substantial amounts of heat energy.
Liquefied natural gas process flow, it is that natural gas is condensed, is collapsed into cryogenic liquid.Generally use water cooling side at present Caused heat energy in the preparation of natural gas and liquefaction process is emitted into air by formula, is not utilized well, is caused big The waste of the heat energy of amount.
The content of the invention
It is an object of the invention to provide gas preparation system, to solve the technology of thermal waste present in prior art Problem.
It is existing to solve the present invention also aims to provide the system to be generated electricity using air separation and Preparation equipment The technical problem of thermal waste present in technology.
Based on above-mentioned first purpose, gas preparation system provided by the invention, including gas prepare pipeline and heat energy utilization Pipeline;
Gas piping entrance, gas pre-cooler and the gas piping that the gas prepares pipeline and includes being sequentially communicated go out Mouthful;
Gas compressing apparatus is provided between the gas piping entrance and the gas pre-cooler, or, the gas Gas compressing apparatus is provided between body pre-cooler and gas piping outlet;
The heat energy utilization pipeline includes N number of circulation loop for the gas-liquid phase transition medium that circulates;Wherein, N be more than etc. In 1 integer;
When N is 1, first circulation loop includes the gas pre-cooler, the first turbine or one that head and the tail are sequentially communicated Level expanding machine, first-stage condenser and level liquid pump;When N is the integer more than or equal to 2, N circulation loops include head and the tail successively N-1 levels condenser, N level steam turbines or the N levels expanding machine of connection, N levels condenser and N level liquid pumps;The N-1 levels condenser is used The N media cooling N-1 level steam turbines of N circulation loops or the N-1 media of N-1 levels expanding machine output are flowed through in order;The N Level condenser is used for the N media for cooling down N level steam turbines or the output of N levels expanding machine;The first medium in the first circulation loop For cryogenic liquid medium;The N media are that normal atmosphere depresses low boiling point in 0 degree Celsius of cryogenic liquid medium;
The gas pre-cooler is used for the first medium cooling institute for making the first circulation loop of the heat energy utilization pipeline State gas and prepare the gas of pipeline and prepare medium.
The optional technical scheme of the present invention is that the gas, which prepares pipeline, includes gas heat exchange system;The air heat Switch is used to make the gas for flowing to the gas piping outlet from the gas piping entrance to prepare medium cooling;
The gas piping entrance, the gas compressing apparatus, the gas pre-cooler and gas heat exchange dress Put and be sequentially communicated;Or the gas piping entrance, the gas pre-cooler, the gas compressing apparatus and the gas Heat-exchange device is sequentially communicated.
The optional technical scheme of the present invention is that the gas, which prepares pipeline, includes gas-filtering device and purification for gas dress Put;
The gas piping entrance, the gas-filtering device, the gas compressing apparatus, the gas pre-cooler, The gas purification apparatus and the gas heat exchange system are sequentially communicated;
Or the gas piping entrance, the gas-filtering device, the gas pre-cooler, the gas compression Device, the gas purification apparatus and the gas heat exchange system are sequentially communicated;
Or the gas piping entrance, the gas-filtering device, the gas pre-cooler, the purification for gas Device, the gas compressing apparatus and the gas heat exchange system are sequentially communicated.
The optional technical scheme of the present invention is the gas piping outlet gas fractionation unit;
The gas heat exchange system includes gas feedback heat-exchange device and gas generating heat-exchange device;The gas Feedback heat-exchange device is arranged between the gas generating heat-exchange device and the gas fractionation unit;
The gas feedback heat-exchange device be used to making the gas of gas fractionation unit output prepare medium cooling from The gas that the gas pre-cooler flows to the gas piping outlet prepares medium;
The gas generating heat-exchange device is used to make the N media of the heat energy utilization pipeline to cool down the gas preparation The gas of pipeline prepares medium;Handed over gas generating heat at the both ends of the gas pre-cooler or the N levels condenser The both ends of changing device are respectively communicated with;Wherein, N is the integer more than or equal to 1.
The optional technical scheme of the present invention is to be set between the gas feedback heat-exchange device and the gas fractionation unit It is equipped with gas expander.
The optional technical scheme of the present invention is that the heat energy utilization pipeline includes cooling down in line pipeline;The cooling is in line Pipeline includes the gas fractionation unit, the N levels condenser and the in line output end of cooling being sequentially communicated;The N levels condenser is used The N level steam turbines or the N of N levels expanding machine output are cooled down in making the gas in the gas fractionation unit prepare medium Medium, and it is conveyed to the in line output end discharge of the cooling.
The optional technical scheme of the present invention is that the heat energy utilization pipeline includes cooling down in line pipeline;The cooling is in line Pipeline includes the in line cryogenic fluid memory of cooling, the N levels condenser and the in line output end of cooling being sequentially communicated;The N Level condenser is used to make the in line medium of cooling in the in line cryogenic fluid memory of cooling cool down the N level steam turbines or institute The N media of N levels expanding machine output are stated, and are conveyed to the in line output end discharge of the cooling;
The in line liquid pump of cooling, institute are provided between the in line cryogenic fluid memory of the cooling and the N levels condenser State and cool down in line liquid pump for making the in line medium of cooling in the in line cryogenic fluid memory of cooling be conveyed to the N levels Condenser;
Cooling memory is provided between the in line cryogenic fluid memory of cooling and the in line liquid pump of cooling to go out Mouth valve.
The optional technical scheme of the present invention is that described gas preparation system includes indirect heat exchange circulation loop;
The indirect heat exchange circulation loop includes the gas heat exchange system, the indirect compression dress that head and the tail are sequentially communicated Put, indirect heat exchange and indirect choke valve;
The gas heat exchange system is used to make the indirect cyclic process medium of the indirect heat exchange circulation loop to cool down from described The gas that gas pre-cooler flows to the gas piping outlet prepares medium;
The indirect heat exchange is used to make the N media cooling indirect heat exchange of the heat energy utilization pipeline to be recycled back to The indirect cyclic process medium on road;The both ends of the gas pre-cooler or the N levels condenser and the indirect heat exchange Both ends are respectively communicated with.
The optional technical scheme of the present invention is, when N is the integer more than or equal to 1, the N levels condenser and the N levels liquid The N grade low-temp working medium memories for storing N media are provided between body pump;
N level condenser pumps are communicated between the N levels condenser and the N grade low-temps working medium memory;The N levels condenser pump The N media that the N levels condenser is flowed through for making are inputted to the N grade low-temps working medium memory;
N level liquid separators are communicated between the N levels condenser and the N levels condenser pump;The N levels liquid separator The N levels condenser pump is conveyed to for separating the N media of the N circulation loops, and by the N media in liquid phase;
N level memory inlet valves are provided between the N levels condenser pump and the N grade low-temps working medium memory;The N N level memory outlet valves are provided between level liquid pump and the N grade low-temps working medium memory;
The N grade low-temps working medium memory is provided with N levels memory compensation air bleeding valve;The N levels memory compensation exhaust Valve is used to compensating or discharging the medium in the N grade low-temps working medium memory;
The N levels condenser is provided with N levels condensation compensation air bleeding valve;N levels condensation compensation air bleeding valve be used to compensate or Person discharges the medium in the N levels condenser;
The N level steam turbines are integrated device with the N levels condenser, or the N levels expanding machine condenses with the N levels Device is integrated device;
The N circulation loops are provided with one or many places circulation loop drain valve, and the circulation loop drain valve is used In medium in the discharge N circulation loops;
It is cased with being incubated outside the N level steam turbines or N levels expanding machine, the N levels condenser and N levels liquid pump Layer;
When N is the integer more than or equal to 2, the boiling point of the N media is not higher than the boiling point of the N-1 media;
When N is integer more than or equal to 1, the N media be carbon dioxide, ammonia, helium, hydrogen, oxygen, argon, nitrogen, freon, Methane, ethane, propane, natural gas, coal gas or biogas;
When N is integer more than or equal to 1, the N level steam turbines or the N levels expanding machine drive connection N levels generator or Person's driving power equipment;
It is that boiling point is subzero gas under normal temperature and pressure that the gas, which prepares medium,;The gas prepare medium for air, Natural gas, methane, ethane, oxygen, nitrogen, argon gas, hydrogen or helium;
Heat-insulation layer is cased with outside the gas pre-cooler;
Heat-insulation layer is cased with outside the gas compressing apparatus;
Heat-insulation layer is cased with outside the gas heat exchange system.
Based on above-mentioned second purpose, the system provided by the invention to be generated electricity using air separation and Preparation equipment, bag Include described gas preparation system.
Beneficial effects of the present invention:
Gas preparation system provided by the invention, including gas prepare pipeline;Gas prepares pipeline and specifically includes flue Road entrance, gas pre-cooler, gas piping outlet and gas compressing apparatus, so that the preparation of gas can be realized, for example with Space division prepares oxygen, nitrogen, argon gas etc., and available natural gas of production and living etc. is prepared by the natural gas of nature;It is described Gas preparation system also includes heat energy utilization pipeline, is followed by the N number of of gas-liquid phase transition medium that be used to circulate of heat energy utilization pipeline Loop back path, and make by gas pre-cooler the first medium cooling gas in the first circulation loop of heat energy utilization pipeline prepare The gas of pipeline prepares medium, to be converted into using the heat energy in gas pre-cooler and by the heat energy by heat energy utilization pipeline 1, to N level steam turbines or 1 to the mechanical energy of the rotation of N levels expanding machine output, effectively make use of gas to prepare the heat in pipeline Can, reduce the waste of heat energy.
The system provided by the invention to be generated electricity using air separation and Preparation equipment, including gas preparation system, can The heat energy in pipeline is effectively prepared using gas, reduces the waste of heat energy.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the first pass schematic diagram for the gas preparation system that the embodiment of the present invention one provides;
Fig. 2 is the second procedure schematic diagram for the gas preparation system that the embodiment of the present invention one provides;
Fig. 3 is the first pass schematic diagram of the heat energy utilization pipeline for the gas preparation system that the embodiment of the present invention one provides;
Fig. 4 is the second procedure schematic diagram of the heat energy utilization pipeline for the gas preparation system that the embodiment of the present invention one provides.
Icon:800- gases prepare pipeline;810- gas piping entrances;820- gas-filtering devices;830- gas compressions Device;840- gas purification apparatus;850- gas heat exchange systems;851- gas feedback heat-exchange devices;852- gases generate electricity Heat-exchange device;860- gas pipings export;870- gas fractionation units;880- gas expanders;The indirect compression sets of 890-; 891- indirect heat exchanges;The indirect choke valves of 892-;
100- heat energy utilization pipelines;101- gas pre-coolers;102- first turbines;103- first-stage condensers;1031- One-level condensation compensation air bleeding valve;104- level liquid separators;105- one-level condenser pumps;106- one-level cryogenic fluid memories; 1061- single-level memory inlet valves;1062- single-level memory outlet valves;1063- single-level memories compensate air bleeding valve; 107- level liquid pumps;108- one-level generators;
202- second turbines;203- secondary condensers;204- secondary liquid separators;205- B-grade condensation pumps;206- Two level cryogenic fluid memory;2061- second-level storage inlet valves;2062- second-level storage outlet valves;207- two level liquid Body pump;208- secondary generators;
The level steam turbines of 302- tri-;303- three-level condensers;304- three-level liquid separators;305- three-level condenser pumps;306- Three-level cryogenic fluid memory;3061- third level storage inlet valves;3062- third level storage outlet valves;307- three-level liquid Body pump;308- three-level generators;
401- compressors;402- heat exchangers;403- refrigerant liquid separators;404- refrigeration low-temperature working medium memories;4041- Freeze memory inlet valve;4042- refrigeration memory outlet valves;405- refrigeration steam turbines;406- refrigeration and generation machines;407- Compress Inlet fluid separator;408- cools down in line cryogenic fluid memory;4081- cools down memory outlet valve;409- is cold In line liquid pump;410- cools down in line valve;
501- heat exchange air bleeding valves;502- circulation loop drain valves.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
Embodiment one
Referring to shown in Fig. 1-Fig. 4, present embodiments providing a kind of gas preparation system;Fig. 1 and Fig. 2 provide for the present embodiment Gas preparation system first pass schematic diagram and second procedure schematic diagram, wherein Fig. 1 can be space division be prepared by system Schematic flow sheet, Fig. 2 can be that natural gas be prepared by the schematic flow sheet of system;Fig. 3 and Fig. 4 is what the present embodiment provided The first pass schematic diagram and second procedure schematic diagram of the heat energy utilization pipeline of gas preparation system.Gas shown in Fig. 1 or Fig. 2 A the and B ports of pre-cooler 101 are A the and B ports of the gas pre-cooler 101 shown in Fig. 3 or Fig. 4;C shown in Fig. 1 or Fig. 2 It is used for the both ends of the gas pre-cooler 101 or N level condensers shown in connection figure 3 or Fig. 4 with D ports;E ports shown in Fig. 1 For output end.
Referring to the gas preparation system that shown in Fig. 1-Fig. 4, the present embodiment provides, applied to space division, natural gas, methane, second The preparation of the gases such as alkane, oxygen, nitrogen, argon gas, hydrogen or helium.
The gas preparation system prepares pipeline 800 and heat energy utilization pipeline 100 including gas.
Gas prepares gas piping entrance 810, gas pre-cooler 101 and the flue that pipeline 800 includes being sequentially communicated Way outlet 860;Alternatively, gas prepares gas piping entrance 810, the gas pre-cooler that pipeline 800 includes being sequentially communicated 101st, gas heat exchange system 850 and gas tube outlet 860;Gas heat exchange system 850 is used to make from gas pre-cooler 101 gases for flowing to gas piping outlet 860 prepare medium cooling.
Gas compressing apparatus 830 is provided between gas piping entrance 810 and gas pre-cooler 101, or, gas is pre- Gas compressing apparatus 830 is provided between device for cooling 101 and gas piping outlet 860;Namely gas compressing apparatus 830 can be set Put before gas pre-cooler 101, can also be arranged on after gas pre-cooler 101.Alternatively, gas compressing apparatus 830 can be Reciprocting piston compressor, centrifugal compressor, screw compressor etc..Alternatively, gas piping entrance 810th, gas compressing apparatus 830, gas pre-cooler 101 and gas heat exchange system 850 are sequentially communicated;Or gas piping Entrance 810, gas pre-cooler 101, gas compressing apparatus 830 and gas heat exchange system 850 are sequentially communicated.Can be according to reality Gas prepared by border needs sets gas piping entrance 810, gas compressing apparatus 830, gas pre-cooler 101 and air heat to hand over Order between changing device 850.
Heat energy utilization pipeline 100 includes N number of circulation loop that circulation has gas-liquid phase transition medium;Wherein, N is more than or equal to 1 Integer;N for example can be 1,2,3,4,5 etc..
N be 1 when, first circulation loop include head and the tail be sequentially communicated gas pre-cooler 101, first turbine 102 or One-stage expansion machine, first-stage condenser 103 and level liquid pump 107;Alternatively, the first medium in first circulation loop is liquid phase Become medium.Alternatively, the first medium for flowing through first-stage condenser 103 is delivered to gas pre-cooler by level liquid pump 107 101, for first medium after carrying out heat exchange with gas pre-cooler 101, first medium heating is in all or part of gaseous state, I.e. first medium is in all or part of gaseous state in all or part of liquid endothermic disintergration.In specific environment, first is situated between Matter can form high pressure, so as to drive first turbine 102 or one-stage expansion machine to do work.Alternatively, first turbine 102 Or one-stage expansion machine drive connection one-level generator 108, pass through gas so that gas to be prepared to the heat energy of pipeline 800 to a certain extent Body pre-cooler 101 is converted into the electric energy of one-level generator 108, improves generating efficiency.In addition, first turbine 102 or one-level Expanding machine can be with other rotation apparatuses of drive connection, such as power-equipment.Alternatively, the first medium in first circulation loop is Cryogenic liquid medium;Alternatively, the first medium in first circulation loop is that normal atmosphere depresses low boiling point in 0 degree Celsius of low temperature Liquid medium.
When N is the integer more than or equal to 2, N circulation loops include N-1 levels condenser, the N level steamers that head and the tail are sequentially communicated Machine or N levels expanding machine, N levels condenser and N level liquid pumps.N-1 levels condenser is used to make the N media for flowing through N circulation loops Cool down N-1 level steam turbines or the N-1 media of N-1 levels expanding machine output.Alternatively, N levels liquid pump will flow through N level condensers N media are delivered to N-1 level condensers, and in N-1 level condensers, N media and N-1 media carry out heat exchange, and N-1 is situated between Matter cooling be in all or part of liquid, namely N-1 media in all or part of gaseous state exothermic conversion be in whole or Operative liquid, the heating of N media is in all or part of gaseous state, namely N media are in all or part of liquid endothermic disintergration For in all or part of gaseous state.In specific environment, N media can form high pressure, so as to drive N level steam turbines or N levels expanding machine does work.Alternatively, N level steam turbines or N level expanding machine drive connection N level generators, will flow to a certain extent The heat energy of N-1 media through N-1 level condensers is converted into the electric energy of N level generators, improves generating efficiency.In addition, N level steamers Machine or N levels expanding machine can be with other rotation apparatuses of drive connection, such as power-equipment.Alternatively, the N of N circulation loops Medium is that normal atmosphere depresses low boiling point in 0 degree Celsius of cryogenic liquid medium.
N levels condenser is used for the N media for cooling down N level steam turbines or the output of N levels expanding machine.That is, the system includes one During individual circulation loop, first-stage condenser is used for the first medium for cooling down first turbine or the output of one-stage expansion machine;The system bag When including two circulation loops, secondary condenser is used for the second medium for cooling down second turbine or the output of compound expansion machine;With this Analogize.
When N is the integer more than or equal to 1, N level steam turbines or N level expanding machine drive connection generators;With by one to N level vapour Turbine or a mechanical energy rotated to N levels expanding machine are converted into electric energy.When the system includes a circulation loop, one-level steamer Machine or one-stage expansion machine drive connection one-level generator, the generator of the system include one-level generator;When the system includes two During individual circulation loop, first turbine or one-stage expansion machine drive connection one-level generator, second turbine or compound expansion machine Drive connection secondary generator, the generator of the system include one-level generator and secondary generator;By that analogy.
Gas pre-cooler 101 is used for the first medium cooling gas for making the first circulation loop of heat energy utilization pipeline 100 The gas for preparing pipeline 800 prepares medium, so that the first circulation loop of heat energy utilization pipeline 100 prepares pipeline 800 with gas Heat exchange is carried out by gas pre-cooler 101, heat energy in pipeline 800 is prepared to recycle gas.
Alternatively, heat-insulation layer is cased with outside gas pre-cooler 101, heat exchange is carried out with ambient temperature to reduce.
Alternatively, heat-insulation layer is cased with outside gas compressing apparatus 830, heat exchange is carried out with ambient temperature to reduce.
Alternatively, heat-insulation layer is cased with outside gas heat exchange system 850, heat exchange is carried out with ambient temperature to reduce.
The place that other needs of gas preparation system described in the present embodiment are incubated, it is also desirable to take some to protect accordingly Warm measure.
Gas preparation system described in the present embodiment prepares pipeline 800 including gas;Gas prepares pipeline 800 and specifically included Gas piping entrance 810, gas pre-cooler 101, gas piping outlet 860 and gas compressing apparatus 830, so that gas can be realized The preparation of body, oxygen, nitrogen, argon gas etc. are prepared for example with space division, preparing production and living by the natural gas of nature can use Natural gas etc.;The gas preparation system also includes heat energy utilization pipeline 100, passes through being used for for heat energy utilization pipeline 100 N number of circulation loop of circulation gas-liquid phase transition medium, and make the first of heat energy utilization pipeline 100 by gas pre-cooler 101 The gas that the first medium cooling gas of circulation loop prepares pipeline 800 prepares medium, with using in gas pre-cooler 101 The heat energy is simultaneously converted into 1 to N level steam turbines or 1 rotation exported to N levels expanding machines by heat energy by heat energy utilization pipeline 100 It mechanical energy, effectively make use of gas to prepare the heat energy in pipeline 800, reduce the waste of heat energy.
Shown in Figure 1, in the alternative of the present embodiment, gas, which prepares pipeline 800, includes the He of gas-filtering device 820 Gas purification apparatus 840;By gas-filtering device 820, dust contained in medium and other impurities are prepared to filter gas, So that the abrasion on the internal mechanical movements surface of gas compressing apparatus 830 can be reduced, ensure that gas prepares the quality of medium;Pass through gas Body purification devices 840, the moisture contained in medium, carbon dioxide, acetylene, other carbon are prepared to filter, adsorb or remove gas The materials such as hydrogen compound;Such as it can avoid or reduce to a certain extent the moisture being frozen and carbon dioxide deposition, block up Plug blocking channel, pipeline and valve caused by the air separation columns such as pipeline, valve, gas fractionation unit.And for example, acetylene gathers There is the danger of blast in liquid oxygen, dust can wear operating machinery.In order to ensure the long-term peace of the preparation facilities such as space division, natural gas For row for the national games, it is necessary to set gas-filtering device 820 and/or gas purification apparatus 840, it is miscellaneous to remove some with special cleaning equipment Matter.Gas purification apparatus 840 can use absorption method and freezing process purification gas, for example with molecular sieve adsorption.Alternatively, Heat-insulation layer is cased with outside gas-filtering device 820, heat exchange is carried out with ambient temperature to reduce.Alternatively, gas purification apparatus 840 Heat-insulation layer is cased with outside, heat exchange is carried out with ambient temperature to reduce.The place that other needs are incubated, it is also desirable to take some corresponding Insulation.
Alternatively, the quantity of gas purification apparatus 840 is two, and two gas purification apparatus 840 are set up in parallel;So as to gas Body purification devices 840 are in regeneration, two used interchangeablies.That is, one of purifier apparatus work, another purifier apparatus is again It is raw.Alternatively, gas purification apparatus 840 is interchangeable use using two molecular sieve equipments.
Alternatively, gas piping entrance 810, gas-filtering device 820, gas compressing apparatus 830, gas pre-cooler 101st, gas purification apparatus 840 and gas heat exchange system 850 are sequentially communicated;
Or gas piping entrance 810, gas-filtering device 820, gas pre-cooler 101, gas compressing apparatus 830, Gas purification apparatus 840 and gas heat exchange system 850 are sequentially communicated;
Or gas piping entrance 810, gas-filtering device 820, gas pre-cooler 101, gas purification apparatus 840, Gas compressing apparatus 830 and gas heat exchange system 850 are sequentially communicated.Gas can be set according to the gas for being actually needed preparation Line entry 810, gas-filtering device 820, gas compressing apparatus 830, gas pre-cooler 101, the and of gas purification apparatus 840 Order between gas heat exchange system 850.
It is shown in Figure 1, in the alternative of the present embodiment, the connection gas fractionation unit 870 of gas piping outlet 860. The gas of needs is isolated by gas fractionation unit 870, the state of the gas can be gaseous state, liquid or gas-liquid mixed shape State.Such as gas fractionation unit 870 is air separation column, space division system prepares oxygen, nitrogen, argon gas by gas fractionation unit 870 Deng.Alternatively, heat-insulation layer is cased with outside gas fractionation unit 870, heat exchange is carried out with ambient temperature to reduce.
Alternatively, gas heat exchange system 850 includes gas feedback heat-exchange device 851 and gas generating heat-exchange device 852;Gas feedback heat-exchange device 851 is arranged between gas generating heat-exchange device 852 and gas fractionation unit 870.
Alternatively, it is cold that the gas that gas feedback heat-exchange device 851 is used to make gas fractionation unit 870 export prepares medium But the gas for gas piping outlet 860 being flowed to from gas pre-cooler 101 prepares medium;Pass through gas feedback heat-exchange device 851, so that the part cryogenic media directly cooling that gas fractionation unit 870 exports flows to flue from gas pre-cooler 101 The gas of way outlet 860 prepares medium, so that gas fractionation unit 870 is easier to prepare gas.Alternatively, gas fractionation unit The gas of 870 outputs prepares medium and discharged through gas feedback heat-exchange device 851, as shown in Fig. 2 gas fractionation unit 870 is defeated The gas gone out prepares E mouth discharge of the medium through gas feedback heat-exchange device 851.
Alternatively, gas generating heat-exchange device 852 is used for the N medium cooling gas systems for making heat energy utilization pipeline 100 The gas of standby pipeline 800 prepares medium;The both ends of gas pre-cooler 101 or N level condensers fill with gas generating heat exchange 852 both ends are put to be respectively communicated with, namely gas pre-cooler 101 or N levels condenser with gas generating heat-exchange device 852 simultaneously Connection is set.Wherein, N is the integer more than or equal to 1.Pipeline 800 is prepared with cooling gas by gas generating heat-exchange device 852 Gas prepare medium, while the gas that gas can also be prepared to pipeline 800 prepares the thermal energy exchange of medium to N media, So that the heat energy is converted into the mechanical energy for the rotation that steam turbine or expanding machine export by heat energy utilization pipeline 100.Such as the institute of Fig. 1,3,4 Show, in figure C the and D ports of gas generating heat-exchange device 852 be used for connection figure 3 or gas pre-cooler 101 shown in Fig. 4 or The both ends of person's N level condensers.
Alternatively, gas expander 880 is provided between gas feedback heat-exchange device 851 and gas fractionation unit 870. The medium that gas fractionation unit 870 exports passes through gas expander 880, sharp temperature drop after being expanded, is advantageous to gas Feedback heat-exchange device 851 cool down from gas pre-cooler 101 flow to gas piping outlet 860 gas prepare medium.Gas Expanding machine 880 for example can be rotation blade machinery.
Shown in Figure 3, in the alternative of the present embodiment, heat energy utilization pipeline 100, which includes circulation, gas-liquid phase transition Jie The refrigeration cycle of matter;By refrigeration cycle to cool down the N media that N level steam turbines or N levels expanding machine export.
Specifically, refrigeration cycle include head and the tail be sequentially communicated N levels condenser, compressor 401, heat exchanger 402, Freeze steam turbine 405 or refrigerating expander or expansion valve.That is, N levels condenser, compressor 401, heat exchanger 402 and system The cold head and the tail of steam turbine 405 are sequentially communicated and form refrigeration cycle;Or N levels condenser, compressor 401, heat exchanger 402 It is sequentially communicated with refrigerating expander head and the tail and forms refrigeration cycle;Or N levels condenser, compressor 401, heat exchanger 402 It is sequentially communicated with expansion valve head and the tail and forms refrigeration cycle.
N levels condenser is used to make the refrigerant cooling N level steam turbines for flowing through refrigeration cycle or the output of N levels expanding machine N media.
Compressor 401 is used to compress refrigerant, and refrigerant is cooled down by heat exchanger 402, is delivered to refrigeration vapour Turbine 405 or refrigerating expander or expansion valve, to drive refrigeration steam turbine 405 or refrigerating expander to rotate.Alternatively, freeze vapour Turbine 405 or refrigerating expander drive connection refrigeration and generation machine 406, so that the N for flowing through N level condensers to be situated between to a certain extent The heat energy of matter is converted into the electric energy of refrigeration and generation machine 406, improves generating efficiency.In addition, refrigeration steam turbine 405 or refrigerating expander Can be with other rotation apparatuses of drive connection, for example, refrigeration steam turbine 405 or refrigerating expander drive connection compressor, are formed Compressor described in mechanical energy feedback.
Alternatively, the refrigerant of refrigeration cycle is the cryogenic liquid medium that boiling point is less than 0 degree Celsius.Alternatively, The boiling point of refrigerant is not higher than the boiling point of N media, in order to which refrigerant cools down N media in N level condensers.It is optional Ground, refrigerant are inorganic Low medium or organic cryogenic media.Alternatively, the boiling point of refrigerant is less than -30 DEG C.Its In, refrigerant for example can be carbon dioxide, ammonia, helium, hydrogen, oxygen, argon, nitrogen, freon, methane, ethane, propane, natural gas, Coal gas or biogas etc.;Certainly, refrigerant can also be other cryogenic medias.Preferably, refrigerant be methane, ethane or Person's boiling point is less than methane, the medium of ethane.
Alternatively, the refrigerant of refrigeration cycle is that gas-liquid becomes phase medium, namely refrigerant is in the kind of refrigeration cycle The conversion of gas phase and liquid phase is carried out in loop.Alternatively, compressed through compressor 401 and the refrigeration after the cooling of heat exchanger 402 is situated between Matter is in a liquid state in whole or in part, and refrigerant discharges pressure after flowing through refrigeration steam turbine 405 or refrigerating expander acting and is in All or part of gaseous state.
In the alternative of the present embodiment, heat exchanger 402 is arranged between N levels liquid pump and N-1 level condensers;Compressor After 401 compression refrigerants, refrigerant is heated up, and the N media and kind of refrigeration cycle of N circulation loops are made by heat exchanger 402 The refrigerant heat exchange in loop, i.e., refrigerant is cooled into all or part of liquid by N media, and N media are freezed Medium is thermally formed portion gas.In theory, after heat exchanger 402 heats N media, the compressed compression of machine 401 system can be made Heat energy caused by cold medium can be used effectively, and improve the energy utilization rate of system, reduce the loss of energy.
Alternatively, the heat exchange air bleeding valve for exhaust is provided with the pipeline between heat exchanger 402 and N-1 level condensers 501.The pressure on the pipeline between heat exchanger 402 and N-1 level condensers can be discharged by the air bleeding valve 501 that exchanges heat.For example, the After N media are thermally formed portion gas by refrigerant, the increased pressure of pipeline, by exchanging heat, the release of air bleeding valve 501 part is pressed Power, to improve the security of N circulation loops operation, and improve the security of system.
Alternatively, compression Inlet fluid separator 407 is communicated between N levels condenser and compressor 401;It is compressed into oral fluid Body separator 407 is used for the refrigerant for separating refrigeration cycle, and will be conveyed to compressor in the refrigerant of gas phase 401;By compressing Inlet fluid separator 407, using the refrigerant for ensuring to be conveyed to compressor 401 as gas, and then improve The service life of compressor 401.
Alternatively, freezing, it is low that refrigeration is communicated between steam turbine 405 or refrigerating expander or expansion valve, with heat exchanger 402 Warm working medium memory 404;To store refrigerant by refrigeration low-temperature working medium memory 404, and improve refrigeration cycle Stability.Wherein, refrigeration low-temperature working medium memory 404 is used to store refrigerant, can improve system to a certain extent The stability in SAPMAC method loop.
Alternatively, it is communicated with refrigerant liquid separator 403 between heat exchanger 402 and refrigeration low-temperature working medium memory 404;System Cold liquid separator 403 is used for the refrigerant for separating refrigeration cycle, and the refrigerant in liquid phase is conveyed into refrigeration Cryogenic fluid memory 404;By refrigerant liquid separator 403, to ensure to be conveyed to the system of refrigeration low-temperature working medium memory 404 Cold medium is liquid.
Alternatively, refrigeration memory is provided between refrigeration low-temperature working medium memory 404 and refrigerant liquid separator 403 to enter Mouth valve 4041;Set between refrigeration steam turbine 405 or refrigerating expander or expansion valve, with refrigeration low-temperature working medium memory 404 There is refrigeration memory outlet valve 4042.By memory inlet valve 4041 and the refrigeration memory outlet valve 4042 of freezing, So that refrigeration low-temperature working medium memory 404 can form independent cryogenic fluid storage facilities, while can also be with kind of refrigeration cycle Refrigerant in the equipment such as the N levels condenser in loop, compressor 401 is circulated with being separated, to run under specific circumstances Protection and control system.
Referring to shown in Fig. 3, Fig. 4, in the alternative of the present embodiment, heat energy utilization pipeline 100 includes cooling down in line pipeline; The N media that N level steam turbines or N levels expanding machine export are cooled down by cooling down in line pipeline.
Specifically, the in line cryogenic fluid memory 408 of cooling, the condensation of N levels that in line pipeline includes being sequentially communicated are cooled down Device and the in line output end of cooling;Alternatively, cool down and be provided with cooling between in line cryogenic fluid memory 408 and N level condenser In line liquid pump 409;Cool down in line pipeline include be sequentially communicated the in line cryogenic fluid memory 408 of cooling, cooling it is in line Liquid pump 409, N levels condenser and the in line output end of cooling;Alternatively, the in line output end of cooling is provided with cooling inline valve Door 410.Alternatively, cool down and be provided with cooling memory between in line cryogenic fluid memory 408 and the in line liquid pump 409 of cooling Outlet valve 4081;The in line cryogenic fluid memory 408 of cooling and cooling are controlled by cooling down memory outlet valve 4081 The break-make of pipeline between in line liquid pump 409.
Cool down in line liquid pump 409 be used for make the in line medium of cooling that cools down in line cryogenic fluid memory 408 convey N level condensers are given, and are discharged through the in line output end of supercooling, it may also be said to are discharged through supercooling inline valve door 410.For example, beat The in line valve 410 of cooling is opened, in line medium is cooled down and is discharged by cooling down in line output end.N levels condenser is used to make cooling in line The N media of the in line medium cooling N level steam turbines of cooling or the output of N levels expanding machine in cryogenic fluid memory, and be conveyed to Cool down in line output end discharge;By making, the in line medium of cooling cools down N level steam turbines in N level condensers or N level expanding machines are defeated The N media gone out, so that N circulation loops being capable of normal operation.
Alternatively, the in line medium of cooling for cooling down in line pipeline is less than 0 degree Celsius of cryogenic liquid medium for boiling point.It is optional Ground, the boiling point for cooling down in line medium are not higher than the boiling point of N media, cooled down in order to cool down in line medium in N level condensers N media.Alternatively, it is inorganic Low medium or organic cryogenic media to cool down in line medium.Alternatively, in line medium is cooled down Boiling point be less than -30 DEG C.Wherein, cool down in line medium for example can be carbon dioxide, ammonia, helium, hydrogen, oxygen, argon, nitrogen, freon, Methane, ethane, propane, natural gas, coal gas or biogas etc.;Certainly, it can also be other cryogenic medias to cool down in line medium.It is excellent Selection of land, cool down the medium that in line medium is less than nitrogen for nitrogen or boiling point.
Alternatively, it is non-combustible medium to cool down in line medium, for example, carbon dioxide, ammonia, helium, hydrogen, oxygen, argon, nitrogen, fluorine profit Hold high, cool down in line medium and directly discharge.Alternatively, it is combustible medium to cool down in line medium;Such as it is first to cool down in line medium Alkane, ethane, propane, natural gas, coal gas or biogas etc..
In the alternative of the present embodiment, the low temperature that in line pipeline can also use gas to prepare the preparation of pipeline 800 is cooled down Medium cools down N level condensers.
Specifically, heat energy utilization pipeline 100 includes cooling down in line pipeline;Cool down the gas that in line pipeline includes being sequentially communicated Body separator 870, N levels condenser and the in line output end of cooling;N levels condenser is used to make the gas in gas fractionation unit 870 Body prepares medium cooling N level steam turbines or the N media of N levels expanding machine output, and is conveyed to the in line output end discharge of cooling.It is logical The cryogenic media for crossing the preparation of gas fractionation unit 870 directly cools down N level steam turbines or the N media of N levels expanding machine output.
Alternatively, the in line liquid pump 409 of cooling is provided between gas fractionation unit 870 and N level condensers, cooling is in line Liquid pump 409 is conveyed to N level condensers for making the gas in gas fractionation unit 870 prepare medium, and gas prepares medium in N Absorb heat in level condenser and discharged by cooling down in line output end.By making the gas of low temperature prepare medium in N level condensers N level steam turbines or the N media of N levels expanding machine output are cooled down, so that N circulation loops being capable of normal operation.The gas of low temperature It can be for example the nitrogen in space division, oxygen, argon etc. to prepare medium.
In the alternative of the present embodiment, heat energy utilization pipeline 100 includes refrigeration cycle and/or cooling vertical pipe Road, i.e. heat energy utilization pipeline 100 include refrigeration cycle, either heat energy utilization pipeline 100 include cooling down in line pipeline or Heat energy utilization pipeline 100 includes refrigeration cycle and cools down in line pipeline.Alternatively, heat energy utilization pipeline 100 includes refrigeration Circulation loop or the in line pipeline of cooling, to simplify heat energy utilization pipeline 100, reduce the construction cost of system.In addition, heat energy utilization Pipeline 100 can also include other equipment, pipelines for being used to cool down N level steam turbines or the N media of N levels expanding machine output.
In the alternative of the present embodiment, when N is the integer more than or equal to 1, set between N levels condenser and N level liquid pumps It is equipped with N grade low-temp working medium memories;Wherein, N grade low-temps working medium memory is used to store N media, can be to a certain extent Improve the stability of N circulation loops.For example, when such as N is 1, set between first-stage condenser 103 and level liquid pump 107 It is equipped with one-level cryogenic fluid memory 106;Wherein, one-level cryogenic fluid memory 106 is used to store first medium, can be one Determine the stability in raising first circulation loop in degree.Alternatively, it is cased with heat-insulation layer outside N grade low-temps working medium memory.
Alternatively, when N is the integer more than or equal to 1, N levels are communicated between N levels condenser and N grade low-temp working medium memories Condenser pump;N levels condenser pump is used to make the N media for flowing through N level condensers input to N grade low-temp working medium memories;Pass through N levels Condenser pump, the N media for flowing through N level condensers are conveyed to N grade low-temp working medium memories.Such as N be 1 when, one-level condensation One-level condenser pump 105 is communicated between device 103 and one-level cryogenic fluid memory 106;One-level condenser pump 105 flows through one for order The first medium of level condenser 103 is inputted to one-level cryogenic fluid memory 106;By one-level condenser pump 105, will flow through The first medium of first-stage condenser 103 is conveyed to one-level cryogenic fluid memory 106.Alternatively, it is cased with being incubated outside N levels condenser pump Layer.
Alternatively, when N is the integer more than or equal to 1, N level liquid is communicated between N levels condenser and N level condenser pumps and is separated Device;N levels liquid separator is used for the N media for separating N circulation loops, and the N media in liquid phase are conveyed into the condensation of N levels Pump;By N level liquid separators, to ensure to be conveyed to the N media of N grade low-temp working medium memories as liquid through N level condenser pumps. Such as N be 1 when, level liquid separator 104 is communicated between first-stage condenser 103 and one-level condenser pump 105;Level liquid point It is used for the first medium for separating first circulation loop from device 104, and the first medium in liquid phase is conveyed to one-level condenser pump 105;By level liquid separator 104, to ensure to be conveyed to one-level cryogenic fluid memory 106 through one-level condenser pump 105 First medium is liquid.Alternatively, it is cased with heat-insulation layer outside N levels liquid separator.
Alternatively, when N is the integer more than or equal to 1, N levels are provided between N levels condenser pump and N grade low-temp working medium memories Memory inlet valve;N level memory outlet valves are provided between N levels liquid pump and N grade low-temp working medium memories;Pass through N Level memory inlet valve and N level memory outlet valves, so that N grade low-temp working medium memories can form independent low temperature work Matter storage facilities, while can also be carried out with the N media in the equipment such as the N levels condensers of N circulation loops, N level liquid pumps Circulate with separating, with running protection under specific circumstances and control system.Such as N be 1 when, one-level condenser pump 105 is low with one-level Single-level memory inlet valve 1061 is provided between warm working medium memory 106;Level liquid pump 107 is deposited with one-level cryogenic fluid Single-level memory outlet valve 1062 is provided between reservoir 106;Stored by single-level memory inlet valve 1061 and one-level Device outlet valve 1062, so that one-level cryogenic fluid memory 106 can form independent cryogenic fluid storage facilities, while It can be circulated with the first medium in the equipment such as the first-stage condenser 103 in first circulation loop, level liquid pump 107 with being divided From with running protection under specific circumstances and control system.
Alternatively, when N is the integer more than or equal to 1, N grade low-temp working medium memories are provided with the compensation exhaust of N levels memory Valve;N levels memory compensation air bleeding valve is used to compensating or discharging the medium in N grade low-temp working medium memories, and the medium can be N N media in grade low-temp working medium memory, or other Jie such as air in first void N grade low-temp working medium memories Matter;Air bleeding valve is compensated by N levels memory, so that the N media of N grade low-temp working medium memories can be supplemented, to compensate N circulations Loop leakage, the N media of volatilization;Air bleeding valve is compensated by N levels memory, additionally it is possible to discharge in N grade low-temp working medium memories In the N media of gas, it can to a certain extent reduce and either avoid N grade low-temp working medium memories from bearing pressure or bear Larger pressure, to improve the security performance of N grade low-temp working medium memories.Such as N be 1 when, one-level cryogenic fluid memory 106 It is provided with single-level memory compensation air bleeding valve 1063;Single-level memory compensation air bleeding valve 1063 is low for compensating or discharging one-level First medium in warm working medium memory 106;Air bleeding valve 1063 is compensated by single-level memory, so that a grade low-temp work can be supplemented The first medium of matter memory 106, to compensate the first medium of the leakage of first circulation loop, volatilization;Mended by single-level memory Repay air bleeding valve 1063, additionally it is possible to discharge in one-level cryogenic fluid memory 106 in the first medium of gas.
Alternatively, when N is the integer more than or equal to 1, N level condensers are provided with N levels condensation compensation air bleeding valve;N levels condense Compensation air bleeding valve is used to compensating or discharging the medium in N level condensers, and the medium can be the N media in N level condensers, Can also be other media such as the air in first void N level condensers.Compensation air bleeding valve is condensed by N levels, so that N can be supplemented The N media of level condenser, to compensate the N media of the leakage of N circulation loops, volatilization;Compensation air bleeding valve is condensed by N levels, It can also discharge in N levels condenser in the N media of gas, can reduce or avoid to a certain extent N level condensers to hold By larger pressure, to improve the security performance of N level condensers.Such as N be 1 when, first-stage condenser 103 be provided with one-level condensation Compensate air bleeding valve 1031;One-level condensation compensation air bleeding valve 1031 is used to compensating or discharging the medium in first-stage condenser 103, should Medium can be first-stage condenser 103 in first medium, or air in first void first-stage condenser 103 etc. its His medium;Pass through one-level condensation compensation air bleeding valve 1031, additionally it is possible to the first medium of first-stage condenser 103 is supplemented, to compensate the The leakage of one circulation loop, the first medium of volatilization;Compensation air bleeding valve 1031 is condensed by one-level, first-stage condenser can be discharged It is in the first medium or other impurities of gas in 103, can reduces or avoid first-stage condenser 103 to bear to a certain extent Larger pressure, to improve the security performance of first-stage condenser 103.
Alternatively, when N is integer more than or equal to 1, N level steam turbines and N level condensers are integrated device, or N levels are swollen Swollen machine is integrated device with N level condensers, with simplied system structure, reduces system cost.Such as N be 1 when, first turbine with First-stage condenser is integrated device, or one-stage expansion machine is integrated device with first-stage condenser.
Alternatively, when N is the integer more than or equal to 1, N circulation loops are provided with one or the discharge of many places circulation loop Valve 502, circulation loop drain valve 502 are used to discharge medium in N circulation loops;The medium can be the N in N level condensers Medium, or other media such as air in first void N level condensers.Alternatively, circulation loop drain valve 502 is set In the output end or input of N level condensers;Alternatively, circulation loop drain valve 502 is arranged on N level steam turbines or N levels are swollen The output end or input of swollen machine.As shown in Figure 3, Figure 4, show that first circulation loop is arranged on level liquid pump in figure Circulation loop drain valve 502 between 107 and one-level cryogenic fluid memory 106.
Alternatively, the N level steam turbines or N levels expanding machine, the N levels condenser and N levels liquid pump overcoat There is heat-insulation layer.
Alternatively, first medium is inorganic Low medium or organic cryogenic media.Alternatively, the boiling point of first medium is high In or less than 0 DEG C (at one atm).Wherein, first medium for example can be water, carbon dioxide, ammonia, helium, hydrogen, oxygen, Argon, nitrogen, freon, methane, ethane, propane, natural gas, coal gas or biogas etc.;Certainly, first medium can also be that other are low Warm medium.Preferably, first medium is the fuel gas such as hydrogen, methane, ethane, propane, oxygen, natural gas, coal gas or biogas.
Alternatively, when N is the integer more than or equal to 2, the boiling point of N media is not higher than the boiling point of N-1 media, in order to N media cool down N-1 media in N-1 level condensers.Alternatively, N media are inorganic Low medium or organic low temperature Medium.Alternatively, N media are that normal atmosphere depresses low boiling point in 0 degree Celsius of cryogenic liquid medium.Alternatively, N media Boiling point be less than -30 DEG C.Wherein, when N is integer more than or equal to 2, N media for example can be carbon dioxide, ammonia, helium, hydrogen, Oxygen, argon, nitrogen, freon, methane, ethane, propane, natural gas, coal gas or biogas etc.;Certainly, N media can also be other Cryogenic media.Preferably, first medium is carbon dioxide or ammonia, and second medium is freon, and the 3rd medium is nitrogen.
Alternatively, it for example can be methane, ethane, propane, oxygen, natural gas, coal gas or biogas to cool down in line medium Deng combustible medium.Preferably, it is liquid hydrogen or liquid natural gas to cool down in line medium, is most clean water caused by combustion of hydrogen Steam, any pollution will not be produced to environment, while calorific value caused by combustion of hydrogen is also highest, therefore in space flight and rocket Fuel system all pay the utmost attention to liquid hydrogen, with the expansion of application market and the reduction of production cost, liquid hydrogen price also will be bright Aobvious reduction, human future development is likely to be the most environmentally friendly liquid hydrogen energy epoch.
Alternatively, it is inorganic Low medium either organic cryogenic media or mixed gas that gas, which prepares medium,.Alternatively, The boiling point that gas prepares medium is higher or lower than 0 DEG C (at one atm).Alternatively, it is normal for normal temperature to prepare medium for gas Pressure boiling point is subzero gas;Wherein, it for example can be air, natural gas, methane, ethane, oxygen, nitrogen that gas, which prepares medium, Gas, argon gas, hydrogen or helium etc.;Certainly, it can also be other media that gas, which prepares medium,.Preferably, gas prepares medium For air or natural gas.
In order to more be apparent from the present embodiment, in the alternative of the present embodiment, heat energy utilization pipeline 100 includes stream It is connected with a circulation loop of gas-liquid phase transition medium and cools down in line pipeline.Namely heat energy utilization pipeline 100 includes first circulation Loop and the in line pipeline of cooling.Alternatively, the first medium in first circulation loop is carbon dioxide or ethane;Cool down vertical pipe The in line medium of cooling on road is methane, liquid oxygen, liquid hydrogen.
Specifically, first circulation loop includes gas pre-cooler 101, the first turbine 102 that head and the tail are sequentially communicated Or one-stage expansion machine, first-stage condenser 103, level liquid separator 104, one-level condenser pump 105, single-level memory inlet valve 1061st, one-level cryogenic fluid memory 106, single-level memory outlet valve 1062 and level liquid pump 107;First turbine 102 or one-stage expansion machine drive connection one-level generator 108.
Cool down the in line cryogenic fluid memory 408 of cooling, first-stage condenser 103 and cold that in line pipeline includes being sequentially communicated In line output end;First-stage condenser 103 is used to make the in line medium cooling of the cooling cooled down in line cryogenic fluid memory 408 First turbine 102 or the first medium of one-stage expansion machine output, and it is conveyed to the in line output end discharge of cooling;Cool down in line low The in line liquid pump 409 of cooling is provided between warm working medium memory 408 and first-stage condenser 103.
It should be noted that heat energy utilization pipeline 100 can include circulation have gas-liquid phase transition medium N number of circulation loop and Cool down in line pipeline.
As N be 2 when, second circulation loop include head and the tail be sequentially communicated first-stage condenser 103, second turbine 202 or Compound expansion machine, secondary condenser 203, secondary liquid separator 204, B-grade condensation pump 205, second-level storage inlet valve 2061st, two level cryogenic fluid memory 206, second-level storage outlet valve 2062 and secondary liquid pump 207;Second turbine 202 or compound expansion machine drive connection secondary generator 208.
As N be 3 when, the 3rd circulation loop include head and the tail be sequentially communicated secondary condenser 203, three level steam turbines 302 or Three-level expanding machine, three-level condenser 303, three-level liquid separator 304, three-level condenser pump 305, third level storage inlet valve 3061st, three-level cryogenic fluid memory 306, third level storage outlet valve 3062 and three-level liquid pump 307;Three level steam turbines 302 or three-level expanding machine drive connection three-level generator 308.
Shown in Figure 2, in the alternative of the present embodiment, the gas preparation system is recycled back to including indirect heat exchange Road.
Indirect heat exchange circulation loop include head and the tail be sequentially communicated gas heat exchange system 850, indirect compression set 890, Indirect heat exchange 891 and indirect choke valve 892.
Gas heat exchange system 850 is used to make the indirect cyclic process medium of indirect heat exchange circulation loop to cool down from the pre- cold charge of gas Put 101 gases for flowing to gas piping outlet 860 and prepare medium;
Indirect heat exchange 891 is used to making the N media of heat energy utilization pipeline 100 to cool down between indirect recuperated cycle loop Connect circulatory mediator;The both ends and the both ends of indirect heat exchange 891 of gas pre-cooler 101 or N level condensers are respectively communicated with, Namely gas pre-cooler 101 or N levels condenser are arranged in parallel with indirect heat exchange 891.Pass through gas heat exchange system 850 and indirect heat exchange 891, so that the N media of heat energy utilization pipeline 100 pass through indirect heat exchange circulation loop cooling gas The gas that pre-cooler 101 flows to gas piping outlet 860 prepares medium.As in Figure 2-4, indirect heat exchange 891 in figure C and D ports be used for connection figure 3 or the gas pre-cooler 101 shown in Fig. 4 or the both ends of N level condensers.
Embodiment two
Embodiment two provides a kind of system to be generated electricity using air separation and Preparation equipment, and the embodiment includes real The gas preparation system described in example one is applied, the technical characteristic of the gas preparation system disclosed in embodiment one is also applied for the implementation Example, the technical characteristic of the published gas preparation system of embodiment one are not repeated to describe.
The system to be generated electricity using air separation and Preparation equipment that the present embodiment provides includes gas preparation system.It is logical Gas preparation system is crossed so that air prepares the gases such as oxygen, nitrogen.
The system to be generated electricity described in the present embodiment using air separation and Preparation equipment has gas described in embodiment one The advantages of body preparation system, it is not repeated to describe herein the advantages of the gas preparation system disclosed in embodiment one.
In order to more be apparent from the present embodiment, illustrate space division technique flow briefly below:
Referring to shown in Fig. 1 of embodiment one, air through gas piping entrance 810 into gas-filtering device 820 filter with Afterwards, enter gas compressing apparatus 830 to be compressed, the air themperature after overcompression can raise, then by gas precooling Device 101 is exchanged heat, and high temperature heat caused by gas compressing apparatus 830 is changed into electric energy using cryogenic media or mechanical energy is defeated Go out, relative to using for water cooling, because the inside of gas pre-cooler 101 uses cryogenic liquid meson, temperature is relatively low, favorably Temperature behind reduction gas compressing apparatus 830, while also it is capable of the energy expenditure of less gas compressing apparatus 830.
Compressed air after supercooling, gas purification apparatus 840 is entered, by the moisture in air, carbon dioxide, second Alkynes and other hydrocarbons etc. are purged and purified (for example, remaining nitrogen and oxygen, and micro argon gas etc.).Due to Gas purification apparatus 840 needs to be regenerated, and sets two gas purification apparatus 840;One of purifier apparatus work, in addition One purifier apparatus regeneration.
Alternatively, the air purified by gas purification apparatus 840, then carry out gas heat exchange system 850 and carry out deep cooling, The liquid air (liquid nitrogen and liquid oxygen) of formation enters the separation that gas fractionation unit 870 carries out liquid nitrogen and liquid oxygen, formed liquid nitrogen, Liquid oxygen and liquid argon output of products.
Alternatively, gas heat exchange system 850 includes gas feedback heat-exchange device 851 and gas generating heat-exchange device 852;Gas fractionation unit 870 can also fractionate out a part of low temperature nitrogen and cryogenic oxygen, be filled by gas feedback heat exchange Put 851 to be absorbed heat, pure nitrogen at room and oxygen are exported after re-heat for users to use.
Optionally, the cryogenic high pressure nitrogen and oxygen that gas fractionation unit 870 exports, the equipment such as expanding machine can also be used Pressure is discharged, output mechanical energy forms cold simultaneously, is easy to gas feedback heat-exchange device 851 to condense air and forms liquid air.
Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of gas preparation system, it is characterised in that prepare pipeline and heat energy utilization pipeline including gas;
The gas prepares gas piping entrance, gas pre-cooler and the gas tube outlet that pipeline includes being sequentially communicated;
Gas compressing apparatus is provided between the gas piping entrance and the gas pre-cooler, or, the gas is pre- Gas compressing apparatus is provided between device for cooling and gas piping outlet;
The heat energy utilization pipeline includes N number of circulation loop for the gas-liquid phase transition medium that circulates;Wherein, N is more than or equal to 1 Integer;
When N is 1, it is swollen that first circulation loop includes the gas pre-cooler, first turbine or one-level that head and the tail are sequentially communicated Swollen machine, first-stage condenser and level liquid pump;When N is the integer more than or equal to 2, N circulation loops include head and the tail and are sequentially communicated N-1 levels condenser, N level steam turbines or N levels expanding machine, N levels condenser and N level liquid pumps;The N-1 levels condenser is used to make Flow through the N media cooling N-1 level steam turbines of N circulation loops or the N-1 media of N-1 levels expanding machine output;The N levels are cold Condenser is used for the N media for cooling down N level steam turbines or the output of N levels expanding machine;The first medium in the first circulation loop is low Geothermal liquid medium;The N media are that normal atmosphere depresses low boiling point in 0 degree Celsius of cryogenic liquid medium;
The gas pre-cooler is used to make the first medium in the first circulation loop of the heat energy utilization pipeline to cool down the gas The gas that body prepares pipeline prepares medium.
2. gas preparation system according to claim 1, it is characterised in that the gas prepares pipeline and handed over including air heat Changing device;The gas heat exchange system is used to make the gas system that the gas piping outlet is flowed to from the gas piping entrance Standby medium cools down;
The gas piping entrance, the gas compressing apparatus, the gas pre-cooler and the gas heat exchange system according to Secondary connection;Or the gas piping entrance, the gas pre-cooler, the gas compressing apparatus and the air heat are handed over Changing device is sequentially communicated.
3. gas preparation system according to claim 2, it is characterised in that the gas, which prepares pipeline, includes gas filtration Device and gas purification apparatus;
It is the gas piping entrance, the gas-filtering device, the gas compressing apparatus, the gas pre-cooler, described Gas purification apparatus and the gas heat exchange system are sequentially communicated;
Or the gas piping entrance, the gas-filtering device, the gas pre-cooler, the gas compressing apparatus, The gas purification apparatus and the gas heat exchange system are sequentially communicated;
Or the gas piping entrance, the gas-filtering device, the gas pre-cooler, the gas purification apparatus, The gas compressing apparatus and the gas heat exchange system are sequentially communicated.
4. gas preparation system according to claim 2, it is characterised in that the gas piping outlet gas separation Device;
The gas heat exchange system includes gas feedback heat-exchange device and gas generating heat-exchange device;The gas feedback Heat-exchange device is arranged between the gas generating heat-exchange device and the gas fractionation unit;
The gas that the gas feedback heat-exchange device is used to make the gas fractionation unit export prepares medium and cooled down from described The gas that gas pre-cooler flows to the gas piping outlet prepares medium;
The gas generating heat-exchange device is used to make the N media cooling gas of the heat energy utilization pipeline to prepare pipeline Gas prepare medium;The both ends of the gas pre-cooler or the N levels condenser fill with the gas generating heat exchange The both ends put are respectively communicated with;Wherein, N is the integer more than or equal to 1.
5. gas preparation system according to claim 4, it is characterised in that the gas feedback heat-exchange device with it is described Gas expander is provided between gas fractionation unit.
6. gas preparation system according to claim 4, it is characterised in that it is in line that the heat energy utilization pipeline includes cooling Pipeline;The in line pipeline of cooling includes the gas fractionation unit, the N levels condenser and the in line output of cooling being sequentially communicated End;The N levels condenser is used to make the gas in the gas fractionation unit prepare the medium cooling N level steam turbines or described The N media of N levels expanding machine output, and it is conveyed to the in line output end discharge of the cooling.
7. gas preparation system according to claim 1 or 2, it is characterised in that the heat energy utilization pipeline includes cooling In line pipeline;The in line cryogenic fluid memory of cooling that the in line pipeline of the cooling includes being sequentially communicated, the N levels condenser and Cool down in line output end;The N levels condenser is used to make the in line medium of cooling in the in line cryogenic fluid memory of cooling The N level steam turbines or the N media of N levels expanding machine output are cooled down, and is conveyed to the in line output end discharge of the cooling;
The in line liquid pump of cooling is provided between the in line cryogenic fluid memory of the cooling and the N levels condenser, it is described cold In line liquid pump is used to make the in line medium of cooling in the in line cryogenic fluid memory of cooling to be conveyed to the N levels condensation Device;
Cooling memory outlet valve is provided between the in line cryogenic fluid memory of cooling and the in line liquid pump of cooling Door.
8. gas preparation system according to claim 2, it is characterised in that including indirect heat exchange circulation loop;
The indirect heat exchange circulation loop include head and the tail be sequentially communicated the gas heat exchange system, indirect compression set, Connect heat-exchanger rig and indirect choke valve;
The gas heat exchange system is used to make the indirect cyclic process medium of the indirect heat exchange circulation loop to cool down from the gas The gas that pre-cooler flows to the gas piping outlet prepares medium;
The indirect heat exchange is used to make the N media of the heat energy utilization pipeline to cool down the indirect heat exchange circulation loop Indirect cyclic process medium;The both ends of the gas pre-cooler or the N levels condenser and the both ends of the indirect heat exchange It is respectively communicated with.
9. gas preparation system according to claim 2, it is characterised in that when N is the integer more than or equal to 1, the N levels The N grade low-temp working medium memories for storing N media are provided between condenser and the N levels liquid pump;
N level condenser pumps are communicated between the N levels condenser and the N grade low-temps working medium memory;The N levels condenser pump is used for The N media that order flows through the N levels condenser are inputted to the N grade low-temps working medium memory;
N level liquid separators are communicated between the N levels condenser and the N levels condenser pump;The N levels liquid separator is used for The N media of the N circulation loops are separated, and the N media in liquid phase are conveyed to the N levels condenser pump;
N level memory inlet valves are provided between the N levels condenser pump and the N grade low-temps working medium memory;The N levels liquid N level memory outlet valves are provided between body pump and the N grade low-temps working medium memory;
The N grade low-temps working medium memory is provided with N levels memory compensation air bleeding valve;The N levels memory compensation air bleeding valve is used In compensating or discharge the medium in the N grade low-temps working medium memory;
The N levels condenser is provided with N levels condensation compensation air bleeding valve;The N levels condensation compensation air bleeding valve is used to compensate or arrange Put the medium in the N levels condenser;
The N level steam turbines are integrated device with the N levels condenser, or the N levels expanding machine is with the N levels condenser Integrated device;
The N circulation loops are provided with one or many places circulation loop drain valve, and the circulation loop drain valve is used to arrange Put medium in the N circulation loops;
Heat-insulation layer is cased with outside the N level steam turbines or N levels expanding machine, the N levels condenser and N levels liquid pump;
When N is the integer more than or equal to 2, the boiling point of the N media is not higher than the boiling point of the N-1 media;
When N is integer more than or equal to 1, the N media be carbon dioxide, ammonia, helium, hydrogen, oxygen, argon, nitrogen, freon, methane, Ethane, propane, natural gas, coal gas or biogas;
When N is the integer more than or equal to 1, the N level steam turbines or the N levels expanding machine drive connection N levels generator or drive Dynamic power-equipment;
It is that boiling point is subzero gas under normal temperature and pressure that the gas, which prepares medium,;The gas prepares medium as air, natural Gas, methane, ethane, oxygen, nitrogen, argon gas, hydrogen or helium;
Heat-insulation layer is cased with outside the gas pre-cooler;
Heat-insulation layer is cased with outside the gas compressing apparatus;
Heat-insulation layer is cased with outside the gas heat exchange system.
10. a kind of system to be generated electricity using air separation and Preparation equipment, it is characterised in that appoint including claim 1-9 Gas preparation system described in one.
CN201711080782.4A 2017-11-06 2017-11-06 Gas preparation system and system for generating electricity by using air separation and preparation equipment Active CN107702432B (en)

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