CN202485330U - Neon and helium separation and purification device - Google Patents

Neon and helium separation and purification device Download PDF

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Publication number
CN202485330U
CN202485330U CN2012200871761U CN201220087176U CN202485330U CN 202485330 U CN202485330 U CN 202485330U CN 2012200871761 U CN2012200871761 U CN 2012200871761U CN 201220087176 U CN201220087176 U CN 201220087176U CN 202485330 U CN202485330 U CN 202485330U
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CN
China
Prior art keywords
heat exchanger
neon
liquid
gas
helium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012200871761U
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Chinese (zh)
Inventor
曹月丛
喻永贵
严寿鹏
俞建
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SHANGHAI QIYUAN AIR SEPARATION TECHNOLOGY DEVELOPMENT Co Ltd
Original Assignee
SHANGHAI QIYUAN AIR SEPARATION TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN2012200871761U priority Critical patent/CN202485330U/en
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Publication of CN202485330U publication Critical patent/CN202485330U/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • F25J3/02Processes 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
    • F25J3/0228Processes 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 characterised by the separated product stream
    • F25J3/028Processes 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 characterised by the separated product stream separation of noble gases
    • 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
    • F25J3/02Processes 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
    • F25J3/0228Processes 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 characterised by the separated product stream
    • F25J3/028Processes 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 characterised by the separated product stream separation of noble gases
    • F25J3/029Processes 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 characterised by the separated product stream separation of noble gases of helium
    • 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
    • F25J3/02Processes 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
    • F25J3/04Processes 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
    • F25J3/04642Recovering noble gases from air
    • 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
    • F25J3/08Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
    • 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
    • F25J2200/00Processes or apparatus using separation by rectification
    • F25J2200/02Processes or apparatus using separation by rectification in a single pressure main column system
    • 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
    • F25J2205/00Processes or apparatus using other separation and/or other processing means
    • F25J2205/02Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • 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
    • F25J2205/00Processes or apparatus using other separation and/or other processing means
    • F25J2205/60Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
    • 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
    • F25J2210/00Processes characterised by the type or other details of the feed stream
    • F25J2210/04Mixing or blending of fluids with the feed stream
    • 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
    • F25J2215/00Processes characterised by the type or other details of the product stream
    • F25J2215/30Helium
    • 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
    • F25J2215/00Processes characterised by the type or other details of the product stream
    • F25J2215/32Neon
    • 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
    • F25J2230/00Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30Compression of the feed stream
    • 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
    • F25J2245/00Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02Recycle of a stream in general, e.g. a by-pass stream
    • 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
    • F25J2270/00Refrigeration techniques used
    • F25J2270/90External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F25J2270/908External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration
    • 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
    • F25J2290/00Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/42Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box

Abstract

The utility model relates to a neon and helium separation and purification device, which comprises a compressor, a first heat exchanger, a liquid nitrogen heat exchanger, a second heat exchanger, a first pressure reducing valve, a liquid neon heat exchanger and a gas-liquid separator which are sequentially connected through pipes. A mixed gas inlet is arranged on the compressor. A helium gas outlet and a liquid neon outlet are arranged on the gas-liquid separator. The first heat exchanger, the liquid nitrogen heat exchanger, the second heat exchanger, the first pressure reducing valve, the liquid neon heat exchanger and the gas-liquid separator are arranged in a vacuum heat-insulating container. The neon and helium separation and purification device provided by the utility model has the advantages of simple structure, convenience in installation, high safety, high recovery rate, low energy consumption and easiness in control, and can meet the needs of industrial large-scale production.

Description

A kind of neon helium separates purifying plant
Technical field
The utility model relates to a kind of gas and separates the device of purifying, and relates in particular to a kind of device that from the mist that contains neon helium, separates purification neon and helium.
Background technology
Neon and helium are inert gases, and its aerial content is merely 18.18 * 10 -6With 5.24 * 10 -6Neon, helium are fixed gas in the air separation plant rectifying column, and accumulate in main condenser top and the nitrogen phegma with gaseous state.Be difficult for separated.
Along with development of science and technology, neon and helium are applicable to the every field of industry in a large number.Neon is used for filling navigation light, neon light more and is used as the safe refrigerant of low temperature test chamber; Helium is used as the protection gas of rare metal refining and prepares breath in deepwater work, the aerospace, is used for pressure vessel, vacuum system leak detection and makes He-Ne laser, also is applied at aspects such as atomic energy, infra-red detection, cryotronicses.
The purification technique of ne-He mixture of the prior art, early stage many employing liquid hydrogen are low-temperature receiver.Under liquid hydrogen temperature, the temperature of ne-He mixture is reduced to the three phase point temperature near neon, make neon liquefaction.Thereby reach the purpose that neon helium separates.But liquid hydrogen production has complexity and danger.
Therefore those skilled in the art is devoted to develop a kind of safe ready, neon helium that the rate of recovery is high separates purifying plant.
The utility model content
In view of above-mentioned the problems of the prior art, the utility model technical problem to be solved is that existing technical security property is low.
A kind of neon helium of the utility model separates purifying plant; Comprise the compressor, first heat exchanger, liquid nitrogen heat exchanger, second heat exchanger, first pressure-reducing valve, liquid neon heat exchanger and the gas-liquid separator that connect through pipeline successively; Said compressor is provided with combi inlet port; Said gas-liquid separator is provided with helium outlet and the outlet of neon liquid, and said first heat exchanger, liquid nitrogen heat exchanger, second heat exchanger, first pressure-reducing valve, liquid neon heat exchanger and gas-liquid separator place vacuum insulation vessel.
In a preferred embodiments of the utility model; The neon liquid outlet of said gas-liquid separator also comprises second pressure-reducing valve, pure neon tower, the 3rd pressure-reducing valve and the said liquid neon heat exchanger that connects through pipeline successively; Said liquid neon heat exchanger is provided with pure neon outlet; Said pure neon tower is provided with mixed gas outlet, and said mixed gas outlet communicates with the combi inlet port of said compressor.
In another preferred embodiments of the utility model, said second pressure-reducing valve, pure neon tower and the 3rd pressure-reducing valve place said vacuum insulation vessel.
In another preferred embodiments of the utility model, the outlet of the helium of said gas-liquid separator also comprises heat exchanger and the low-temperature adsorber that connects through pipeline successively, and said low-temperature adsorber is provided with pure helium out.
In another preferred embodiments of the utility model, said heat exchanger and low-temperature adsorber place the low temperature liquid nitrogen container.
In another preferred embodiments of the utility model; Also comprise thick purification assembly; Said thick purification assembly comprises I stage compressor, the drier that dewaters, I level heat exchanger, I level gas-liquid separator and the I grade low-temp absorber that connects through pipeline successively; Said I stage compressor is provided with thick combi inlet port, and said I grade low-temp absorber is provided with pure mixed gas outlet, and said pure mixed gas outlet communicates with the combi inlet port of said compressor.
In another preferred embodiments of the utility model, said I stage compressor, the drier that dewaters, I level heat exchanger, I level gas-liquid separator and I grade low-temp absorber place the low temperature liquid nitrogen container.
In another preferred embodiments of the utility model; Also comprise the I level pressure-reducing valve, the II level gas-liquid separator that are connected successively through pipeline with I level gas-liquid separator; The gas vent of said II level gas-liquid separator communicates with the thick combi inlet port of I stage compressor, and the liquid outlet of said II level gas-liquid separator communicates with the low temperature liquid nitrogen container.
In another preferred embodiments of the utility model, also comprise main heat exchanger, the said drier that dewaters is connected with I level heat exchanger through main heat exchanger, and said I grade low-temp absorber is connected with the combi inlet port of said compressor through main heat exchanger.
It is simple in structure, easy for installation that the neon helium of the utility model separates purifying plant, and safe, the rate of recovery is high, energy consumption is low, easy to control, be applicable to industrial large-scale production needs.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the utility model;
Fig. 2 is the structural representation that the embodiment of the utility model comprises thick purification assembly.
The specific embodiment
Below will combine accompanying drawing and embodiment that the utility model is done concrete explaination.
A kind of neon helium of the embodiment of the utility model as shown in Figure 1 separates purifying plant, comprises successively the compressor that connects through pipeline 9, first heat exchanger 10, liquid nitrogen heat exchanger 11, second heat exchanger 12, first pressure-reducing valve 13, liquid neon heat exchanger 14 and gas-liquid separator 15.
Compressor 9 is provided with combi inlet port 91, is used to gaseous mixture to be separated and gets into.Gas-liquid separator 15 is provided with helium outlet 151 and neon liquid outlet 152, is used for separating accomplishing back gas-liquid discharge.First heat exchanger 10, liquid nitrogen heat exchanger 11, second heat exchanger 12, first pressure-reducing valve 13, liquid neon heat exchanger 14 and gas-liquid separator 15 place vacuum insulation vessel 22.
The neon helium of the utility model separates purifying plant and utilizes liquid nitrogen and liquid neon heat exchanger, through cryogenic high pressure throttling and gas-liquid separation neon is separated with helium.Simple in structure, easy for installation, and safe, the rate of recovery is high, energy consumption is low, easy to control, be applicable to industrial large-scale production needs.
As shown in fig. 1, in the embodiment of the utility model, the neon liquid of gas-liquid separator 15 outlet 152 also comprises successively second pressure-reducing valve 16, pure neon tower 17, the 3rd pressure-reducing valve 18 and the liquid neon heat exchanger 14 that connects through pipeline.Liquid neon heat exchanger 14 is provided with pure neon outlet 141, and pure neon tower 17 is provided with mixed gas outlet 171, and mixed gas outlet 171 communicates with the combi inlet port 91 of compressor 9.Thereby when separating purify pure neon and pure helium, impure gas can return and be recovered in separation in the gaseous mixture, realizes recycle.Pure neon has been realized recycle after 14 heat exchange of liquid neon heat exchanger, being discharged by pure neon outlet 141.
As shown in fig. 1, in the embodiment of the utility model, second pressure-reducing valve 16, pure neon tower 17 and the 3rd pressure-reducing valve 18 place vacuum insulation vessel 22.Vacuum insulation vessel in the utility model can adopt the vavuum pump extracting vacuum in order to keep adiabatic effect, and vacuum is about 1 * 10 -4Pa.
As shown in fig. 1, in the embodiment of the utility model, the helium of gas-liquid separator 15 outlet 151 also comprises the heat exchanger 19 and low-temperature adsorber 20 that connects through pipeline successively, and further cryogenic absorption is removed impurity such as neon and obtained pure helium.Low-temperature adsorber 20 is provided with pure helium out.Preferred heat exchanger and low-temperature adsorber place low temperature liquid nitrogen container 21.Low temperature liquid nitrogen container in the utility model can be vacuumized by vavuum pump, keeps vacuum to be about 0.17Pa.
As shown in Figure 2; In the embodiment of the utility model; Can also comprise thick purification assembly, the assembly of slightly purifying comprises I stage compressor 1, the drier 2 that dewaters, I level heat exchanger 4, I level gas-liquid separator 5 and the I grade low-temp absorber 8 that connects through pipeline successively.I stage compressor 1 is provided with thick combi inlet port, and I grade low-temp absorber 8 is provided with pure mixed gas outlet 81, and pure mixed gas outlet 81 communicates with the combi inlet port 91 of compressor 9.Thereby obtain ne-He mixture after can adopting condensation at low temperature and low-temperature adsorption to remove the impurity such as nitrogen and oxygen in the unstripped gas thick ne-He mixture body.Preferably, I stage compressor, the drier that dewaters, I level heat exchanger, I level gas-liquid separator and I grade low-temp absorber place low temperature liquid nitrogen container 21.
As shown in Figure 2, in the embodiment of the utility model, also comprise main heat exchanger 3.The drier 2 that dewaters is connected with I level heat exchanger 4 through main heat exchanger 3, and I grade low-temp absorber 8 is connected recycle through main heat exchanger 3 with the combi inlet port 91 of compressor 9.
In addition, as shown in Figure 2, in the embodiment of the utility model, can also comprise the I level pressure-reducing valve 6, the II level gas-liquid separator 7 that are connected successively through pipeline with I level gas-liquid separator 5.The gas vent of II level gas-liquid separator 7 communicates with the thick combi inlet port of I stage compressor 1, and the liquid outlet of II level gas-liquid separator 7 communicates with the low temperature liquid nitrogen container.Thereby the gaseous mixture that II level gas-liquid separator separates goes out is recycled, and liquid gets in the low temperature liquid nitrogen container, recycle.
As shown in Figure 2, when the actual motion of the utility model, can be with thick ne-He mixture through 1 supercharging of I stage compressor; Dewater after drier 2 dryings remove moisture through molecular sieve, get in the main heat exchanger 3, and the cold airflow that is backflowed cooling; Again through 4 coolings of I level heat exchanger; Nitrogen and the oxygen more than 90% is condensed in the unstripped gas at this moment, sends into afterwards and carries out the gas-liquid separation of I level in the I level gas-liquid separator 5, is separated into gaseous component and liquid phase component.
Wherein, the gaseous component (wherein the neon volume fraction is 75%, and helium is 23.6%) after the I level gas-liquid separator separates gets into and removes the pure ne-He mixture of acquisition behind the impurity such as nitrogen and oxygen behind the I grade low-temp absorber 8, and wherein the neon volume fraction is 76%, and helium is 24%.
And the liquid phase component after I level gas-liquid separator separates passes through 6 throttlings of I level pressure-reducing valve, and carries out the II level through II level gas-liquid separator 7 and separate, and is separated into gaseous component and liquid phase component.Liquid phase component wherein enters in the low temperature liquid nitrogen container 21, returns in the thick ne-He mixture after 3 re-heats of gaseous component process main heat exchanger.
Afterwards, with getting into 9 superchargings of ne-He mixture compressor after pure ne-He mixture process main heat exchanger 3 re-heats that obtain.Ne-He mixture after the supercharging is at first cooled off through the cold airflow that first heat exchanger 10 is backflowed; Get into liquid nitrogen heat exchanger 11 then by cooled with liquid nitrogen; Get into the cold airflow cooling of being backflowed of second heat exchanger 12 afterwards; Through 13 throttlings of first pressure-reducing valve, cool off after entering liquid neon heat exchanger 14 and the heat exchange of pure liquid neon, be separated into gaseous component and liquid phase component through gas-liquid separator 15 again.
(the neon volume fraction is 99.2% to the liquid phase that obtains behind the process gas-liquid separator 15; The helium volume fraction is 0.8%) 16 throttlings get into pure neon tower 17 through second pressure-reducing valve; Neon is separated with helium fully in pure neon tower; The gaseous component that cat head obtains returns in the ne-He mixture after through second and first heat exchanger 12 and 10, and the liquid phase component that obtains at the bottom of the tower (the neon volume fraction is greater than 99.995%) gets into heat exchange in the liquid neon heat exchanger 14 through 18 throttlings of the 3rd pressure-reducing valve, then through second and first heat exchanger 12 and 10 re-heats afterwards; This is pure neon, can pressurize to charge in the bottle.
(the neon volume fraction is 14% to the gas phase that obtains through gas-liquid separator 15; The helium volume fraction is 86%) be raw helium, raw helium is through second and first heat exchanger 12 and 10 back re-heats, reclaims that cold is laggard goes in the main heat exchanger 3 after the cooling; Continue cooling through over-heat-exchanger 19 then; Get in the low-temperature adsorber 20, obtain pure helium (the helium volume fraction is greater than 99.999%) after removing impurity such as neon, pure helium can charge in the bottle after reclaiming cold through main heat exchanger 3 re-heats.
More than the specific embodiment of the utility model is described in detail, but it is as example, the utility model is not restricted to the specific embodiment of above description.To those skilled in the art, any equivalent modifications that this practicality is carried out with substitute also all among the category of the utility model.Therefore, impartial conversion and the modification under spirit that does not break away from the utility model and scope, done all should be encompassed in the scope of the utility model.

Claims (9)

1. a neon helium separates purifying plant; It is characterized in that; Comprise the compressor, first heat exchanger, liquid nitrogen heat exchanger, second heat exchanger, first pressure-reducing valve, liquid neon heat exchanger and the gas-liquid separator that connect through pipeline successively; Said compressor is provided with combi inlet port, and said gas-liquid separator is provided with helium outlet and the outlet of neon liquid, and said first heat exchanger, liquid nitrogen heat exchanger, second heat exchanger, first pressure-reducing valve, liquid neon heat exchanger and gas-liquid separator place vacuum insulation vessel.
2. neon helium as claimed in claim 1 separates purifying plant; It is characterized in that; The neon liquid outlet of said gas-liquid separator also comprises second pressure-reducing valve, pure neon tower, the 3rd pressure-reducing valve and the said liquid neon heat exchanger that connects through pipeline successively; Said liquid neon heat exchanger is provided with pure neon outlet, and said pure neon tower is provided with mixed gas outlet, and said mixed gas outlet communicates with the combi inlet port of said compressor.
3. neon helium as claimed in claim 2 separates purifying plant, it is characterized in that said second pressure-reducing valve, pure neon tower and the 3rd pressure-reducing valve place said vacuum insulation vessel.
4. neon helium as claimed in claim 1 separates purifying plant, it is characterized in that, the helium outlet of said gas-liquid separator also comprises heat exchanger and the low-temperature adsorber that connects through pipeline successively, and said low-temperature adsorber is provided with pure helium out.
5. neon helium as claimed in claim 4 separates purifying plant, it is characterized in that said heat exchanger and low-temperature adsorber place the low temperature liquid nitrogen container.
6. neon helium as claimed in claim 1 separates purifying plant; It is characterized in that; Also comprise thick purification assembly, said thick purification assembly comprises I stage compressor, the drier that dewaters, I level heat exchanger, I level gas-liquid separator and the I grade low-temp absorber that connects through pipeline successively, and said I stage compressor is provided with thick combi inlet port; Said I grade low-temp absorber is provided with pure mixed gas outlet, and said pure mixed gas outlet communicates with the combi inlet port of said compressor.
7. neon helium as claimed in claim 6 separates purifying plant, it is characterized in that said I stage compressor, the drier that dewaters, I level heat exchanger, I level gas-liquid separator and I grade low-temp absorber place the low temperature liquid nitrogen container.
8. neon helium as claimed in claim 7 separates purifying plant; It is characterized in that; Also comprise the I level pressure-reducing valve, the II level gas-liquid separator that are connected successively through pipeline with I level gas-liquid separator; The gas vent of said II level gas-liquid separator communicates with the thick combi inlet port of I stage compressor, and the liquid outlet of said II level gas-liquid separator communicates with the low temperature liquid nitrogen container.
9. neon helium as claimed in claim 6 separates purifying plant; It is characterized in that; Also comprise main heat exchanger, the said drier that dewaters is connected with I level heat exchanger through main heat exchanger, and said I grade low-temp absorber is connected with the combi inlet port of said compressor through main heat exchanger.
CN2012200871761U 2012-03-09 2012-03-09 Neon and helium separation and purification device Expired - Fee Related CN202485330U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102949911A (en) * 2012-11-20 2013-03-06 东南大学 Device for efficiently separating gas mixture of helium and carbon dioxide and separation method
CN109442868A (en) * 2018-10-26 2019-03-08 中船重工鹏力(南京)超低温技术有限公司 A method of removing deoxygenation nitrogen separating-purifying neon helium
CN113108550A (en) * 2021-04-19 2021-07-13 衢州杭氧特种气体有限公司 Neon and helium separation system and separation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102949911A (en) * 2012-11-20 2013-03-06 东南大学 Device for efficiently separating gas mixture of helium and carbon dioxide and separation method
CN109442868A (en) * 2018-10-26 2019-03-08 中船重工鹏力(南京)超低温技术有限公司 A method of removing deoxygenation nitrogen separating-purifying neon helium
CN113108550A (en) * 2021-04-19 2021-07-13 衢州杭氧特种气体有限公司 Neon and helium separation system and separation method thereof
CN113108550B (en) * 2021-04-19 2022-03-29 衢州杭氧特种气体有限公司 Neon and helium separation system and separation method thereof

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