WO2015014460A2 - Procédé de séparation de composants indésirables d'un courant d'hélium - Google Patents

Procédé de séparation de composants indésirables d'un courant d'hélium Download PDF

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Publication number
WO2015014460A2
WO2015014460A2 PCT/EP2014/002017 EP2014002017W WO2015014460A2 WO 2015014460 A2 WO2015014460 A2 WO 2015014460A2 EP 2014002017 W EP2014002017 W EP 2014002017W WO 2015014460 A2 WO2015014460 A2 WO 2015014460A2
Authority
WO
WIPO (PCT)
Prior art keywords
helium
components
cooling
helium stream
cooling step
Prior art date
Application number
PCT/EP2014/002017
Other languages
German (de)
English (en)
Other versions
WO2015014460A3 (fr
Inventor
Lutz Decker
Wilhelm HANSPETER
Original Assignee
Linde Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2015014460A2 publication Critical patent/WO2015014460A2/fr
Publication of WO2015014460A3 publication Critical patent/WO2015014460A3/fr

Links

Classifications

    • 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
    • F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
    • 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
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • 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
    • F25J2205/20—Processes or apparatus using other separation and/or other processing means using solidification of components
    • 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
    • F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
    • 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
    • F25J2205/60—Processes 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
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/30—Helium
    • 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
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/20—Integration in an installation for liquefying or solidifying a fluid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/30—Quasi-closed internal or closed external helium refrigeration cycle
    • 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
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements

Definitions

  • the invention relates to a method for separating unwanted components, such as nitrogen, oxygen, hydrogen and / or neon, from a helium stream containing unwanted components, which initially against a cold medium to a temperature not exceeding 8 K above the
  • Freezing point of the undesirable components is cooled (1st cooling step) and the thereby condensing (s) unwanted (s) component (s) is separated from the helium stream, and wherein the helium stream is then further cooled (2 Cooling step), so that the unwanted (n) component (s) freeze, and wherein the amount and / or the composition of the or the used for the first and / or second cooling step, the cooling medium or refrigerants are adjustable.
  • a helium stream containing unwanted components is first subjected to a first cooling step, the so-called.
  • Capacitor supplied.
  • the helium stream against a suitable cold medium for example.
  • the freezing components clog the freezer over time. It is therefore necessary to heat the laid heat exchanger from time to time, whereby the frozen-out components melt. These are also collected and removed from the process. Before the process can then be put into operation again, a re-cooling of the heat exchanger to operating temperature is required. The thus purified helium stream is then fed to its further use, such as liquefaction. The cooling medium required for the two above-described cooling steps is conducted in countercurrent to the helium stream to be cooled. According to the teaching of DE-A 102008053846, the amount and / or composition of the or for the. and / or 2.
  • Temperature, pressure, etc. can be adjusted. This allows individual control of the two cooling steps. Depending on the temperature and / or the composition of the helium stream to be purified, the amount and / or composition of the cooling medium (s) used for the first and / or second cooling step can thus be optimally adjusted.
  • Helium liquefiers are usually shut down at regular intervals - for example over the weekend.
  • the internal piping of the condenser which is cold during operation continuously warms up during standstill and the pressure rises.
  • the helium can be discharged up to a predefined pressure into the so-called "warm" reservoir to be provided, upon further heating the aforementioned impurities desorb and, together with the helium, are returned to the recovery system of the Condenser pressed, from which they in turn get into the helium feed stream.
  • significant proportions of the neon and hydrogen enriched during the liquefaction operation remain in the main refrigeration cycle, resulting in an accumulation of these components.
  • Helium liquefiers are usually not used. Instead, the
  • Object of the present invention is to provide a generic method for separating unwanted components from a helium stream, in which the aforementioned disadvantages can be avoided.
  • a generic method for separating unwanted components from a helium stream is proposed, which is characterized in that the helium stream after the 2nd cooling step one of Separation of hydrogen and / or neon serving adsorption process
  • the temperature of the helium stream fed to the adsorption process is between 10 and 35 K.
  • the hydrogen and neon components removed from the system can be supplied to a treatment process.
  • helium and / or a helium-rich fraction is used as cold medium for the 1st and / or 2nd cooling step, and the purified helium stream is added to the helium stream used as the cooling medium.
  • the undesirable components containing helium stream is fed via line 1 to a first cooling step, the so-called. Condenser - represented by the heat exchangers E1 and E2 - supplied.
  • Condenser - represented by the heat exchangers E1 and E2 - supplied.
  • the helium stream against a cold medium which will be discussed in more detail below, up to a temperature which is a maximum of 8K above the freezing point of the undesirable component or in the case of several undesirable components up to a temperature which is not more than 8 K is above the highest freezing point of these unwanted components, cooled.
  • the unwanted impurities condense now in the heat exchangers E1 and E2.
  • the condensed components are withdrawn via the line sections 2 and 3 from the helium stream and discarded.
  • a condensate collecting tank D is provided. The condensate collected in it can be discarded and / or used for cooling the helium liquefaction process.
  • the heat exchanger or ejector E3 is followed by an adsorption process A serving to separate off hydrogen and / or neon, to which the helium stream 4 withdrawn from the heat exchanger E3 is supplied.
  • the temperature of the helium stream 4 is between 10 and 35 K.
  • the adsorption process A is formed by one or more adsorbers arranged in parallel, which are suitable for the respective application
  • Adsorbent have realized.
  • the withdrawn from the adsorption process A, purified from undesirable components helium stream is on the
  • this can also be arranged downstream of the heat exchanger E4.
  • the cooling medium required for the two above-described cooling steps is transmitted via the line sections 7 and 8 or 7, 9 and 10 to the second or first Cooling step supplied.
  • the cooling capacity required for the individual heat exchangers can be controlled individually.
  • the first cooling step (condenser) is operated at the operating point and thus the largest possible amount of undesired components are condensed.
  • the refrigerant is withdrawn via line 11 and possibly fed to a further use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

L'invention concerne un procédé de séparation de composants indésirables, tels que par exemple l'azote, l'oxygène, l'hydrogène et/ou le néon, d'un courant d'hélium contenant un composant indésirable. Selon l'invention, celui-ci est refroidi contre un milieu de refroidissement tout d'abord jusqu'à une température qui est au maximum de 8 K au dessus du point de gélification des composants indésirables ou dans le cas de plusieurs composants indésirables jusqu'à une température qui est au maximum de 8 K au dessus du point de gélification le plus élevé des composants indésirables (1ère étape de refroidissement) et le/les composant(s) indésirable(s) ainsi condensé(s) est/sont séparé(s) du courant d'hélium. Le courant d'hélium est ensuite encore refroidi (2ème étape de refroidissement) de sorte que le/les composant(s) indésirable(s) gèlent, la quantité et/ou la composition du ou des milieu(x) de refroidissement utilisé(s) pour la 1ère et/ou la 2ème étape de refroidissement pouvant être réglées. Selon l'invention, le courant d'hélium est soumis, après la 2ème étape de refroidissement, à un processus d'adsorption servant à la séparation de l'hydrogène et/ou du néon.
PCT/EP2014/002017 2013-07-30 2014-07-22 Procédé de séparation de composants indésirables d'un courant d'hélium WO2015014460A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013012656.8 2013-07-30
DE102013012656.8A DE102013012656A1 (de) 2013-07-30 2013-07-30 Verfahren zum Abtrennen unerwünschter Komponenten aus einem Helium-Strom

Publications (2)

Publication Number Publication Date
WO2015014460A2 true WO2015014460A2 (fr) 2015-02-05
WO2015014460A3 WO2015014460A3 (fr) 2015-08-27

Family

ID=51260828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/002017 WO2015014460A2 (fr) 2013-07-30 2014-07-22 Procédé de séparation de composants indésirables d'un courant d'hélium

Country Status (2)

Country Link
DE (1) DE102013012656A1 (fr)
WO (1) WO2015014460A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015001664A1 (de) * 2015-02-10 2016-08-11 Linde Aktiengesellschaft Verfahren zur Heliumgewinnung
CN109442868B (zh) * 2018-10-26 2021-04-13 中船重工鹏力（南京）超低温技术有限公司 一种去除氧氮分离提纯氖氦的方法
WO2021204422A1 (fr) 2020-04-07 2021-10-14 Linde Kryotechnik Ag Procédé et dispositif pour la séparation de constituants indésirables à partir d'un courant d'hélium
DE102021205423B4 (de) 2021-05-27 2023-09-21 Bruker Switzerland Ag Vorrichtung zur Reinigung und Verflüssigung von Helium und zugehöriges Verfahren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415069A (en) * 1966-10-31 1968-12-10 Nasa High pressure helium purifier
US3683589A (en) * 1970-09-08 1972-08-15 Us Interior Helium purifier
GB1365801A (en) * 1971-02-25 1974-09-04 Physicheski Inst S Aneb Pri Ba Separation of gases
JPS61272576A (ja) * 1985-05-24 1986-12-02 株式会社神戸製鋼所 Ｈｅの精製方法
DE102008053846A1 (de) 2008-10-30 2010-05-06 Linde Ag Verfahren zum Abtrennen unerwünschter Komponenten aus einem Helium-Strom

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WO2015014460A3 (fr) 2015-08-27
DE102013012656A1 (de) 2015-02-05

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