CN203239401U - Energy comprehensive utilization system based on supercritical air - Google Patents
Energy comprehensive utilization system based on supercritical air Download PDFInfo
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- CN203239401U CN203239401U CN2013202890348U CN201320289034U CN203239401U CN 203239401 U CN203239401 U CN 203239401U CN 2013202890348 U CN2013202890348 U CN 2013202890348U CN 201320289034 U CN201320289034 U CN 201320289034U CN 203239401 U CN203239401 U CN 203239401U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04593—The air gas consuming unit is also fed by an air stream
- F25J3/046—Completely integrated air feed compression, i.e. common MAC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04309—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
- F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04812—Different modes, i.e. "runs" of operation
- F25J3/04842—Intermittent process, so-called batch process
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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
- 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
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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
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/02—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams using a pump in general or hydrostatic pressure increase
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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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
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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
- F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
- F25J2260/42—Integration in an installation using nitrogen, e.g. as utility gas, for inerting or purging purposes in IGCC, POX, GTL, PSA, float glass forming, incineration processes, for heat recovery or for enhanced oil recovery
- F25J2260/44—Integration in an installation using nitrogen, e.g. as utility gas, for inerting or purging purposes in IGCC, POX, GTL, PSA, float glass forming, incineration processes, for heat recovery or for enhanced oil recovery using nitrogen for cooling purposes
Abstract
The utility model discloses an energy comprehensive utilization system based on supercritical air. The energy comprehensive utilization system based on the supercritical air comprises an air liquefaction subsystem, an air separation subsystem and an air expansion electricity generation subsystem, wherein at least one pipeline is arranged between every two of the subsystems. In the system, a pipeline with a valve is arranged between an air compressor unit and a low-pressure expansion machine, and a pipeline is arranged between the air expansion electricity generation subsystem and a cold accumulation heat exchanger. Nitrogen with high purity flows in main pipelines of the system most time, so that comprehensive utilization of energy based on the supercritical air is effectively achieved, and the service life of the system is further prolonged.
Description
Technical field
The utility model relates to the comprehensive utilization of energy field, particularly a kind of energy comprehensive utilization system based on supercritical air.
Background technique
The energy is the requisite production and subsistence of modern society, ensures the energy stabilizing supply, and improving constantly efficiency of energy utilization is the important foundation of the national economic development and social progress.China's energy is relatively deficient, energy owning amount is in world's reduced levels per capita, and China is in industrialization and urbanization Rapid development stage, to basic raw material demands such as iron and steel, cement, so that the industry of these highly energy-consumings still keeps certain growth rigidity.Therefore, solve the recycling of used heat and the waste heat of these industries, the comprehensive utilization ratio that improves the energy is significant.
Along with the energy resource supply growing tension, the cost that energy consumption occupies is increasing for high energy-consuming enterprises impact, have in addition surpass the cost of raw material.Utilize used heat, exhaust heat recovery power generation, both can satisfy to greatest extent the lifelong need for electricity of enterprise, reduce outer purchase of electricity, can reduce enterprise's cost of production again, increase economic efficiency.
Present existing used heat cogeneration technology comprises: high-temperature residual heat generating, with the low-temperature cogeneration of afterburning, without the low-temperature cogeneration of afterburning.Without the low-temperature cogeneration of afterburning owing to being UTILIZATION OF VESIDUAL HEAT IN without fuel, so more meet the requirement of energy-conserving and environment-protective;
The tradition afterheat generating system is based on the system of gas turbine technology exploitation, namely utilize the high-temperature gas of industrial waste heat and waste heat, or utilize 350～450 degree low-temperature waste heat and waste heat gases Celsius, by the certain fossil fuel of afterburning, directly drive the gas turbine generating.Its shortcoming is that energy recovery efficiency is low.System needs fossil fuel that thermal source is provided, and does not meet the energy development requirement.
The low-temperature cogeneration without afterburning that occurs in the recent period is to utilize low-temperature waste heat and waste heat gas, reclaims heat energy by SP heat pipe waste heat boiler and AQC heat pipe waste heat boiler, drives the condensing steam turbine generator generating.This method has improved the recovery rate of heat energy, so that system has broken away from fossil fuel substantially so that the temperature of final Exhaust Gas is reduced to 150 degree Celsius.But this method remains a kind of recovery of single energy, and a large amount of heat energy of discharging in the water cooling system for these industry extensive uses still can't reclaim.
Reclaim and also to store the energy that may waste, then effectively discharge the energy of storage, be that each state of the whole world is all in the problem of seeking solution always.
Although in Chinese patent application 201210266532.0,200910225252.3,201220370877.6 and multiple supercritical air energy storage/release is also disclosed in 201210518522.1 can system, some problems have been solved on the part degree, but what reflux in the pipeline when releasing energy owing to these systems is air always, oxygen wherein causes system pipeline aging fast, the defective that life-span is short, can occur that system cost is also unrecovered to be come but system's problem of ageing failure, and not only need cold-storage heat-exchanger also to need regenerative heat exchanger in these systems, cause system complex, build the high problem of cost.Therefore, provide a kind of system, can solve energy storage, the system that can effectively release energy again, and can make system have the relatively long life-span so that guarantee can not only cost-recovering, can also bring great economic benefit.
The model utility content
Based on above problem, the utility model discloses a kind of energy comprehensive utilization system based on supercritical air, it utilizes property and the heat-exchanger rig of air supercritical state, with the air stored energy that liquefies, then carrying out nitrogen oxygen separates, isolate the higher oxygen of value, make the nitrogen expansion acting, what mainly circulate in the pipeline when making system release energy is nitrogen, prolong lifetime of system, paddy is electric, wind-powered electricity generation is abandoned the problem of complex utilization after electricity can not get effectively utilization and compressed-air energy storage thereby solve.
First aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, and it comprises:
Air liquefaction subtense angle, air separation subtense angle, gas expansion power generation sub-system;
Described air liquefaction subtense angle comprises air compressor unit, cold-storage heat exchanger and liquid container;
Described air separation subtense angle comprises oxygen-nitrogen separator, regenerative heat exchanger;
Described gas expansion power generation sub-system comprise by propeller shaft couplings by at least one low-pressure expansion machine, at least one expansion unit and the generator that high pressure expansion machine consists of;
Described energy comprehensive utilization system based on supercritical air is characterised in that:
Any at least one pipeline that is provided with between the two in described air liquefaction subtense angle, described air separation subtense angle, the described gas expansion power generation sub-system;
Be provided with the pipeline with valve between described air compressor unit and the described low-pressure expansion machine, this pipeline is used for by described air compressor unit to described low-pressure expansion machine input compressed-air;
Be provided with pipeline between described gas expansion power generation sub-system and the described cold-storage heat-exchanger, this pipeline is used for by described gas expansion power generation sub-system to described cold-storage heat-exchanger transporting low temperature gas.
Second aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Be provided with the pipeline of inlet opening that is connected to the high pressure expansion machine of described gas expansion power generation sub-system from the low temperature nitrogen delivery outlet of described air separation subtense angle between described air separation subtense angle and the described gas expansion power generation sub-system, be used for by described air separation subtense angle to described gas expansion power generation sub-system conveying high-pressure low temperature nitrogen.
The 3rd aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described air separation subtense angle also and between the cold-storage heat-exchanger of described air liquefaction subtense angle is provided with pipeline, and this pipeline is used for by described air separation subtense angle to described cold-storage heat-exchanger transporting low temperature gas.
The 4th aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described liquid container is provided with pipeline between described cold-storage heat-exchanger, this pipeline is used for by described liquid container to described cold-storage heat-exchanger transporting low temperature gas.
The 5th aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Be provided with the pipeline of cooler that is connected to the generator of described gas expansion power generation sub-system from the low temperature nitrogen delivery outlet of described air separation subtense angle between the generator of described air separation subtense angle and described gas expansion power generation sub-system, be used for by described air separation subtense angle to described generator transporting low temperature nitrogen.
The 6th aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described air liquefaction subtense angle comprises air purification and purifier apparatus, and described compressor bank adopts coaxial series connection or split axle parallel connection to connect with driving source.
The 7th aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described expansion unit adopts coaxial series connection or split axle parallel connection to connect with generator shaft.
The 8th aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described compressor is piston type, axial flow, radial inflow, screw type or hybrid;
Described decompressor is piston type, axial flow, radial inflow, screw type or hybrid.
The 9th aspect of the present utility model provides a kind of energy comprehensive utilization system of supercritical air, it is characterized in that:
Described cold-storage heat-exchanger is one or more combination of tubular type, board-like, tubular fin type and plate-fin heat exchanger.
The of the present utility model ten aspect provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Be provided with valve on each connecting tube;
Also be provided with at least one cryopump on the pipeline between described liquid container and the described air separation subtense angle.
The 11 aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Described cryopump is reciprocating type, centrifugal or hybrid cryopump.
The 12 aspect of the present utility model provides a kind of energy comprehensive utilization system based on supercritical air, it is characterized in that:
Heat exchanger in the described air separation subtense angle is a kind of of tubular type, board-like, tubular fin type and plate-fin heat exchanger or combination.
Compare with traditional used heat, afterheat generating system, energy comprehensive utilization system has following potential advantage: consider recovery and the utilization of energy, not only improved energy utilization efficiency, can be simultaneously enterprise provides production required raw material and by-product, can be Reducing Cost in Enterprises, create new growth engines.The utility model is dexterously with pressurized air deep cooling oxygen processed, combines with the energy recovery generating, proposed a kind of implementation methods of the comprehensive energy recycling system that life-span is long, efficient is high for highly energy-consuming industries such as metallurgical, cement and thermoelectricitys.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
The energy comprehensive utilization system structural drawing based on supercritical air of Fig. 1 prior art;
Fig. 2 is the energy comprehensive utilization system structural drawing based on supercritical air of the present utility model.
Embodiment
For making the purpose of this utility model, technological scheme and advantage more cheer and bright, below in conjunction with embodiment and with reference to accompanying drawing, the utility model is further described.Should be appreciated that, these descriptions are exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, omitted the description to known configurations and technology, to avoid unnecessarily obscuring concept of the present utility model.
As shown in Figure 1, this is a kind of typical energy comprehensive utilization system structural drawing based on supercritical air in the prior art.Its concrete reference character is explained referring to disclosed Chinese utility model patent application 201210266532.0 and utility application 201220370877.6.Should be based on the energy comprehensive utilization system of supercritical air, being also referred to as supercritical air energy storage/release can system, comprises accumulation of heat/heat exchanger 2 and cold-storage/heat exchanger 4, and what reflux in the pipeline when energy discharges all is the air before and after the acting of expanding.Airborne oxygen nitrogen mixture can cause the corrosion of pipeline with aging.
Fig. 2 is the energy comprehensive utilization system structural drawing based on supercritical air of the present utility model.Energy comprehensive utilization system based on supercritical air of the present utility model comprises: air liquefaction subtense angle S1, air separation subtense angle S2, gas expansion power generation sub-system S3.Wherein, air liquefaction subtense angle S1 can comprise air compressor unit 2, cold-storage heat exchanger 3 and liquid container 5.Air separation subtense angle S2 can comprise oxygen-nitrogen separator 9, heat exchanger 10.Gas expansion power generation sub-system S3 can comprise by propeller shaft couplings by at least one low-pressure expansion machine 13, at least one expansion unit and the generator 14 that high pressure expansion machine 12 consists of.In the energy comprehensive utilization system based on supercritical air of the present utility model, any at least one pipeline that is provided with between the two is (such as pipeline 30,29,28 among air liquefaction subtense angle S1, air separation subtense angle S2 and the gas expansion power generation sub-system S3,20,21).Be provided with the pipeline 30 with valve 15 between air compressor unit 2 and the low-pressure expansion machine 13, this pipeline 30 is used for by air compressor unit 2 to low-pressure expansion machine 13 input compressed-airs.Be provided with pipeline 29 between gas expansion power generation sub-system S3 and the cold-storage heat-exchanger 3, this pipeline is used for by gas expansion power generation sub-system S3 to cold-storage heat-exchanger 3 transporting low temperature gases.Can be provided with throttle valve (such as 4), pressure regulator valve (such as 11) or stop valve (such as 6,17,15) on the pipeline.As the general condition of realizing the energy comprehensive utilization system based on supercritical air of the present utility model, certainly also comprise the oxygen therapy pipe valve 8 that the liquid oxygen after will separating among cold-storage gas outlet pipe road 30 among the air liquefaction subtense angle S1 and valve 16, the air separation subtense angle S2 is exported, but these are not emphasis of the present utility model, therefore they are not described in detail.
Be provided with the pipeline 23 of inlet opening that is connected to the high pressure expansion machine 12 of gas expansion power generation sub-system S3 from the low temperature nitrogen delivery outlet of air separation subtense angle S2 between air separation subtense angle S2 and the gas expansion power generation sub-system S3, be used for by air separation subtense angle S2 to gas expansion power generation sub-system S3 conveying high-pressure low temperature nitrogen.On pipeline, can be provided with pressure regulator valve 11.At this moment, what flow through in the pipeline 23 is the higher nitrogen of purity, so the gas attack effect that pipeline 23 is subject to the gas passageway of high pressure expansion machine 12 is very little, and therefore lifetime of system also can prolong greatly.Although clearly do not draw the various import and export of air separation subtense angle among the figure, those skilled in the art readily appreciates that, can as required nitrogen delivery outlet, oxygen delivery outlet and air-out be set, and connects corresponding the import and export.
Air separation subtense angle S2 also and between the generator 14 of gas expansion power generation sub-system S3 can be provided with pipeline 28, and this pipeline is used for by air separation subtense angle S2 to generator 14 transporting low temperature gases.Also modulating valve can be set on this pipeline.Here the gas of input can be unsegregated air, also can be the nitrogen after separating, if nitrogen, can prolong equally the life-span of the pipeline of flowing through.
Liquid container 5 is provided with pipeline between cold-storage heat-exchanger 3, this pipeline is used for by liquid container 5 to cold-storage heat-exchanger 3 transporting low temperature gases.As shown in Figure 2, this moment, pipeline can be regulated by modulating valve 17, was used for the air of liquid container 5 part gaseous states is flowed to cold-storage heat-exchanger 3.When working, gas expansion power generation sub-system S3 can close by regulating low temperature valve 17 path of this pipeline.Be noted that cold-storage heat-exchanger 3 is the most basic structures to being provided with pipeline 19 between the liquid container 5, pipeline 19 is to be transported to liquid container 5 for the liquid air with cold-storage heat-exchanger 3, can be provided with throttle valve 4 in the path.
Be provided with the pipeline 28 of cooler that is connected to the generator 14 of gas expansion power generation sub-system S3 from the low temperature nitrogen delivery outlet of air separation subtense angle S2 between the generator 14 of air separation subtense angle S2 and gas expansion power generation sub-system S3, be used for from air separation subtense angle S2 to generator 14 transporting low temperature nitrogen, generator is cooled off.What carry here is the higher nitrogen of purity, can reduce pipeline aging.
Air liquefaction subtense angle S1 can also comprise air purification and purifier apparatus, and is not shown, and compressor bank 2 can adopt coaxial series connection or split axle parallel connection to connect with driving source, only schematically draws a compressor among the figure.Can comprise many low pressure compressors and high pressure compressor in the compressor bank, unit is mutually connected or is integrated into whole multistage unit.
The expansion unit can comprise many low-pressure expansion machines and high pressure expansion machine, can adopt the parallel connection of coaxial series connection or split axle to connect with generator shaft.They are mutually connected or are integrated into whole multiple expansion engine.
Compressor in the compressor bank 2 can be piston type, axial flow, radial inflow, screw type or hybrid.Each low pressure compressor entrance connects air-source.
Decompressor 13,12 can be piston type, axial flow, radial inflow, screw type or hybrid.Decompressor is appellation turbine engine or turbo machine also, is the machine that the transformation of energy that will be accumulated with in the fluid working substance becomes mechanical work.
Cold-storage heat-exchanger 3 can be one or more combination of tubular type, board-like, tubular fin type and plate-fin heat exchanger.
All can be provided with valve on each connecting tube, valve location can arrange as required.
Also be provided with at least one cryopump 7 on the pipeline between liquid container 5 and the air separation subtense angle S2.
Cryopump 7 is reciprocating type, centrifugal or hybrid cryopump.
Low-pressure expansion machine 13 is discharged cryogenic gas, is connected with cold-storage heat-exchanger 3 through pipeline 29.Be noted that especially, in the energy comprehensive utilization system based on supercritical air of the present utility model, only be when high pressure expansion machine 12 is inputted low temperature nitrogen, need to not open valve 15, that is to say, it only is being only of when high pressure expansion machine 12 is not inputted low temperature nitrogen, flowing through in the pipeline 29 air after the swollen machine 13 of low pressure expands, other times throttle down 15, open valve 11, making what flow through in pipeline 29 and the expansion unit is the higher nitrogen of purity, thereby reduce the corrosion of pipeline and expansion unit and wear out the prolongation lifetime of system.
Motor 1 is by the propeller shaft couplings of coupling and compressor bank 2; Generator 14 is by the propeller shaft couplings of coupling and expansion unit.
Compressor links to each other with low-pressure expansion machine through pipeline 30.After being used for compressor and opening machine, when the expansion unit can not provide low temperature nitrogen to cold-storage heat-exchanger 3, expand by low-pressure expansion machine 13, form Cryogenic air, the initial compression air is cooled.Although what flow through in pipeline 29 and the low-pressure expansion machine 13 this moment is air, the time is shorter, has therefore reduced corrosion and aging.The compressor high-pressure air connects cold-storage heat-exchanger 3 through main pipe 18.Heat exchanger 3 links to each other with liquid container 5 through pipeline 19 and throttle valve 4.
Be provided with valve 6 and at least one cryopump 7 in pipeline 21, valve is positioned at the upstream of cryopump.
Where necessary, open valve 17, by pipeline 20 the cryogenic gaseous air in the liquid container 5 is transported to cold-storage heat-exchanger 3 through cold air outlet.But throttle down 17 when cold-storage heat-exchanger 3 has enough low-temperature receivers.
Pipeline 28 connects cold air outlet or the gaseous nitrogen atmosphere outlet and the generator cooler that is integrated on the generator of air separator 9.The preferred gaseous nitrogen atmosphere outlet and the generator cooler that is integrated on the generator that connects air separator 9 can reduce the corrosion of generator cooler like this with aging.
The oxygen that air separator 9 is separated is sent through pipeline 22; Nitrogen is connected with high pressure, low-pressure expansion machine through pipeline 23,24 behind heat exchange tank 10.
System of the present utility model running is:
When system started, compressor bank shortened a certain amount of air pressure into supercritical state.On the one hand, when valve 11 is closed, when supplying with the expansion unit without low temperature nitrogen, the Partial shrinkage air becomes Cryogenic air after pipeline 30 is delivered to low-pressure expansion machine expansion acting, send into cold-storage heat-exchanger 3 (can be multistage cold-storage heat-exchanger) through pipeline 29, be used for the cooling of main pipe high-pressure air, open and work as valve 11, when having low temperature nitrogen to supply with the expansion unit, then throttle down 15; On the other hand, the high-pressure air in the compressor bank main pipe, through cooling behind the cold-storage heat-exchanger 3, most low temperature compression air are liquefied behind throttle valve, and send into low-temperature liquid storage tank 5 and store as cold energy.A small amount of remaining gaseous state Cryogenic air turns back to cold-storage heat-exchanger 3 through pipeline 20, and being used for provides the part low-temperature receiver to cold-storage heat-exchanger 3.
System after having put aside a certain amount of liquid air in the liquid container 5, opens valve 6 after starting, cryopump 7 liquid towards air pressurized, the high-pressure liquid air is warmed through oxygen-nitrogen separator 9, reach the supercritical state of nitrogen after, make the nitrogen ebullition, gasification, with nitrogen gasification separation from liquid air.Remaining liquid is the liquid oxygen of certain purity, opens valve 8 and is transported to oxygen conveying pipe through pipeline 22.(the heat here can be can produce a large amount of used heat, waste heat from heat, blast furnace high-temperature gas heat exchanger, metallurgy, thermoelectricity, manufacture of cement that the sun absorbs to nitrogen after the gasification through the follow-up temperature of continuing rising of heat exchange tank 10 (or appellation heat exchanger) heat absorption, if the hot water tank heat exchange is not enough, also can behind hot water tank, set up electric regenerative heat exchange chamber), further improve the required temperature of nitrogen expansion acting.High pressure nitrogen drives high pressure expansion machine 12, low-pressure expansion machine 13 actings through pipeline 23,24, drives the generator generating.If valve 15 is opened, then can be after system start a period of time, the valve 15 in the pipeline 30 is closed, the low-pressure expansion machine relief opening is discharged pure low temperature nitrogen, be used for the cooling of main pipe air, and discharge through valve 16 from cold-storage heat-exchanger 3 outlet conduits 31, enter nitrogen gas delivery-line.This shows, the main pipeline 23 of system, 24,29,28 most times are to flow through the higher nitrogen of purity, but not oxygenous air can reduce the corrosion to system pipeline and expansion unit like this, and lifetime of system is prolonged.
Energy comprehensive utilization system based on supercritical air of the present utility model can make motor abandon wind-powered electricity generation mainly with power station valley electricity and wind-powered electricity generation and can be power supply, drives the pneumatics unit, with air liquefaction as the cold energy raw material storage.The energy that generates electricity, multiplex in the power supply of smelting equipment and air compressor itself, also can be with unnecessary electric energy feed-in electrical network.
Although do not draw in the drawings, in the energy comprehensive utilization system based on supercritical air of the present utility model, also comprise purification and the purifying of air in the air compressing process, remove airborne solid matter, moisture and foreign gas; Air purification and purifier apparatus are integrated in the compressed air unit.
In the energy comprehensive utilization system based on supercritical air of the present utility model, compressor bank 2 overall pressure tatios are between 38～340.When being multiple compressors, can adopt coaxial series connection, split axle pattern in parallel to connect with driving source.
In the energy comprehensive utilization system based on supercritical air of the present utility model, expansion unit overall pressure tatio is between 38～340.When being many decompressors, can adopt coaxial series connection, split axle pattern in parallel to connect with generator shaft.
In the energy comprehensive utilization system based on supercritical air of the present utility model, compressor is piston type, axial flow, radial inflow, screw type or hybrid.
In the energy comprehensive utilization system based on supercritical air of the present utility model, decompressor is piston type, axial flow, centrifugal, screw type or hybrid.
At the energy comprehensive utilization system based on supercritical air of the present utility model, the heat exchanger of cold-storage heat-exchanger 3, supercritical air is cooled to 81K～150K (K is Kelvin temperature unit), and its heat exchanger is a kind of of tubular type, board-like, tubular fin type (as shown in FIG.) and plate-fin heat exchanger or combination.
In cold-storage heat-exchanger, Cryogenic air and cool storage medium direct contact heat transfer or non-direct contact heat transfer, its heat exchange form is a kind of or combination in sensible heat cold-storage or the solid-liquid phase change cold-storage.Heat exchanger cools off the high pressure supercritical air of main pipe.
The sensible heat cool storage medium that adopts has one or more in sealing ice hockey, stone or concrete, aluminium strip dish or other metals; The solid-liquid phase change cool storage medium is that phase transition temperature is in ammonia and the aqueous solution, salts solution, olefines, alkanes substance and the compound thereof of 81K～150K, one or more in alcohols and the aqueous solution thereof.Cool storage medium is stored in the thermally insulated container.
When cold-storage heat-exchanger provides the low temperature cold quantity not sufficient, install the low-temperature expansion turbine engine additional or open valve 17, provide cold to replenish.
In the energy comprehensive utilization system based on supercritical air of the present utility model, liquid air low-temperature liquid storage tank 5 is low temperature storing tank or Dewar storage tank, and liquid air is that atmospheric pressure or under pressure power stores.
In the energy comprehensive utilization system based on supercritical air of the present utility model, cryopump 7 is reciprocating type, centrifugal or hybrid, and liquid air is pressurized to 3.8MPa～34Mpa, in the time of many, is plural serial stage or parallel connection.
In the energy comprehensive utilization system based on supercritical air of the present utility model, 9 minutes high pressure of oxygen-nitrogen separator, middle pressure, low pressure three classes, be to utilize the boiling point of oxygen and nitrogen different, realize the separation of nitrogen, and will still be in liquid oxygen by pipeline 22, valve 8 outputs.
In the energy comprehensive utilization system based on supercritical air of the present utility model, heat exchange tank (being also referred to as heat exchanger) 10, utilize waste heat, the used heat of the circulating water that the apparatus cools such as metallurgy, thermoelectricity, cement furnace use, by heat exchanger so that high pressure nitrogen further be warmed up to more than the 300K.Heat exchanger 10 is a kind of of tubular type, board-like, tubular fin type and plate-fin heat exchanger or combination.
In the energy comprehensive utilization system based on supercritical air of the present utility model, waste heat, used heat can be waste heat and the used heat of power plant, cement industry, metallurgy industry, and waste heat and the used heat of native system machine operation generation.
In the energy comprehensive utilization system based on supercritical air of the present utility model, when energy storage, regulate energy storage capacity by the air inflow of control first order compressor.
In the energy comprehensive utilization system based on supercritical air of the present utility model, adjusting air inflow quantity is by regulating compressor load, start/stop time, start-stop Partial shrinkage machine or regulating the control that pressure ratio realizes air inflow.
In the energy comprehensive utilization system based on supercritical air of the present utility model, when utilizing the nitrogen energy storing and electricity generating, regulate generating capacity by the liquid air air inflow of control air separation subtense angle S2.
Obviously, those skilled in the art will readily appreciate that, can be in system on all duct routes, all kinds of valves are installed in any position of valve that needs, and perhaps adjust as required the relative position of valve and miscellaneous part.In the accompanying drawings, do not mark the pipeline place of valve, valve can be set as required yet.
Native system carries out high-efficiency comprehensive utilization to the energy, and following advantage is arranged: the comprehensive utilization of energy rate is high; Save energy and reduce the cost, reduce production costs, improve the economic benefit of enterprise; Environmentally friendly; Lifetime of system is long.Be applicable to metallurgy, thermoelectricity and the cement production enterprise of various scales, reduce the consumption of business capital inputs and resources, have wide prospect of the application.
The comprehensive utilization of resource and the energy: the utility model utilizes paddy electricity and wind-powered electricity generation to abandon the wind-powered electricity generation energy, carries out the overcritical energy storage of liquid air and oxygen, nitrogen preparation; Utilize the cold of low temperature nitrogen
Realize the cooling of circulating water, reduce circulating water temperature; Recycle the rear High Temperature High Pressure nitrogen generating of being heated.The liquid oxygen that generates is admitted to the oxygen therapy pipeline, is used for the purposes such as blast furnace steel-making; The nitrogen of discharging is at last utilized by tinning.System very effectively utilizes resource and the energy, almost not waste.
Energy-saving and cost-reducing, reduce production costs, improve the economic benefit of enterprise: metallurgy, thermoelectricity, manufacture of cement can produce a large amount of used heat, waste heat, if do not fully utilized, can cause a large amount of energy wastes.The utility model has not only been realized the recovery of used heat, waste heat, and has realized efficient utilization of resource, will effectively reduce enterprise's cost of production, to produce 1640000 tons cement production enterprise per year as example, can be at least the economic benefit that enterprise brings 1,500 ten thousand yuan.
Environmentally friendly: this energy comprehensive utilization system does not relate to fossil fuel, do not discharge any harmful matter, is complete environmental protection.
Belong to the energy-saving and cost-reducing system that a kind of novel high efficient energy sources fully utilize, can use with coordinative composition of equipments such as metallurgy, thermoelectricity, cement furnaces.
What reflux in the pipeline when releasing energy with system is that the legacy system of air is compared always, legacy system has mobile oxygen and causes aging fast, the short defective of life-span of system pipeline, can occur that system cost is also unrecovered to be come but system's problem of ageing failure, and not only need cold-storage heat-exchanger also to need regenerative heat exchanger in these systems, cause system complex, build the high problem of cost.Therefore, the utility model provides a kind of system, can solve energy storage, and the system that can effectively release energy again, and can make system have the relatively long life-span so that guarantee can not only cost-recovering, can also bring great economic benefit.Should be understood that, above-mentioned embodiment of the present utility model only is used for exemplary illustration or explains principle of the present utility model, and does not consist of restriction of the present utility model.Therefore, in the situation that do not depart from any modification that spirit and scope of the present utility model make, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.In addition, the utility model claims are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (12)
1. energy comprehensive utilization system based on supercritical air, it comprises:
Air liquefaction subtense angle, air separation subtense angle, gas expansion power generation sub-system;
Described air liquefaction subtense angle comprises air compressor unit, cold-storage heat exchanger and liquid container;
Described air separation subtense angle comprises oxygen-nitrogen separator, heat exchanger;
Described gas expansion power generation sub-system comprise by propeller shaft couplings by at least one low-pressure expansion machine, at least one expansion unit and the generator that high pressure expansion machine consists of;
Described energy comprehensive utilization system based on supercritical air is characterised in that:
Any at least one pipeline that is provided with between the two in described air liquefaction subtense angle, described air separation subtense angle, the described gas expansion power generation sub-system;
Be provided with the pipeline with valve between described air compressor unit and the described low-pressure expansion machine, this pipeline is used for by described air compressor unit to described low-pressure expansion machine input compressed-air;
Be provided with pipeline between described gas expansion power generation sub-system and the described cold-storage heat-exchanger, this pipeline is used for by described gas expansion power generation sub-system to described cold-storage heat-exchanger transporting low temperature gas.
2. the energy comprehensive utilization system based on supercritical air as claimed in claim 1 is characterized in that:
Be provided with the pipeline of inlet opening that is connected to the high pressure expansion machine of described gas expansion power generation sub-system from the low temperature nitrogen delivery outlet of described air separation subtense angle between described air separation subtense angle and the described gas expansion power generation sub-system, be used for by described air separation subtense angle to described gas expansion power generation sub-system conveying high-pressure low temperature nitrogen.
3. the energy comprehensive utilization system based on supercritical air as claimed in claim 2 is characterized in that:
Described air separation subtense angle also and between the cold-storage heat-exchanger of described air liquefaction subtense angle is provided with pipeline, and this pipeline is used for by described air separation subtense angle to described cold-storage heat-exchanger transporting low temperature gas.
4. the energy comprehensive utilization system based on supercritical air as claimed in claim 3 is characterized in that:
Described liquid container is provided with pipeline between described cold-storage heat-exchanger, this pipeline is used for by described liquid container to described cold-storage heat-exchanger transporting low temperature gas.
5. the energy comprehensive utilization system based on supercritical air described in claim to 4 is characterized in that:
Be provided with the pipeline of cooler that is connected to the generator of described gas expansion power generation sub-system from the low temperature nitrogen delivery outlet of described air separation subtense angle between the generator of described air separation subtense angle and described gas expansion power generation sub-system, be used for by described air separation subtense angle to described generator transporting low temperature nitrogen.
6. such as claim to 1 any one described energy comprehensive utilization system based on supercritical air in 5, it is characterized in that:
Described air liquefaction subtense angle comprises air purification and purifier apparatus, and described compressor bank adopts coaxial series connection or split axle parallel connection to connect with driving source.
7. such as the described energy comprehensive utilization system based on supercritical air of claim to 6, it is characterized in that:
Described expansion unit adopts coaxial series connection or split axle parallel connection to connect with generator shaft.
8. such as the described energy comprehensive utilization system based on supercritical air of claim to 7, it is characterized in that:
Described compressor is piston type, axial flow, radial inflow, screw type or hybrid;
Described decompressor is piston type, axial flow, radial inflow, screw type or hybrid.
9. such as the described energy comprehensive utilization system based on supercritical air of claim to 8, it is characterized in that:
Described cold-storage heat-exchanger is one or more combination of tubular type, board-like, tubular fin type and plate-fin heat exchanger.
10. such as the described energy comprehensive utilization system based on supercritical air of claim to 9, it is characterized in that:
Be provided with valve on each connecting tube;
Also be provided with at least one cryopump on the pipeline between described liquid container and the described air separation subtense angle.
11. such as the described energy comprehensive utilization system based on supercritical air of claim to 10, it is characterized in that:
Described cryopump is reciprocating type, centrifugal or hybrid cryopump.
12. such as the described energy comprehensive utilization system based on supercritical air of claim to 11, it is characterized in that:
Heat exchanger in the described air separation subtense angle is a kind of of tubular type, board-like, tubular fin type and plate-fin heat exchanger or combination.
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| CN2013202890348U CN203239401U (en) | 2013-05-22 | 2013-05-22 | Energy comprehensive utilization system based on supercritical air |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266952A (en) * | 2013-05-22 | 2013-08-28 | 南京飓能电控自动化设备制造有限公司 | Comprehensive energy utilization system based on supercritical air |
| CN105201555A (en) * | 2015-10-20 | 2015-12-30 | 彭学军 | United expanding power system applied to high pressure gas electricity generation |
| CN108252750A (en) * | 2018-01-09 | 2018-07-06 | 华北电力大学（保定） | A kind of liquefied air energy-storing and power-generating system for efficiently using the heat of compression |
-
2013
- 2013-05-22 CN CN2013202890348U patent/CN203239401U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266952A (en) * | 2013-05-22 | 2013-08-28 | 南京飓能电控自动化设备制造有限公司 | Comprehensive energy utilization system based on supercritical air |
| CN105201555A (en) * | 2015-10-20 | 2015-12-30 | 彭学军 | United expanding power system applied to high pressure gas electricity generation |
| CN108252750A (en) * | 2018-01-09 | 2018-07-06 | 华北电力大学（保定） | A kind of liquefied air energy-storing and power-generating system for efficiently using the heat of compression |
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Effective date of registration: 20160311 Address after: 211113 Tao Dong Road, Nanjing Airport Industrial Zone, Jiangning, Jiangsu Patentee after: Nanjing High Accurate Drive Electromechanical Automation Equipment Co., Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Patentee before: Nanjing Juneng Electric Control Automation Equipment Manufacturing Co., Ltd. |
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Granted publication date: 20131016 Termination date: 20200522 |