US1963809A - Process of obtaining constituents of air having a higher boiling point than oxygen - Google Patents

Process of obtaining constituents of air having a higher boiling point than oxygen Download PDF

Info

Publication number
US1963809A
US1963809A US634779A US63477932A US1963809A US 1963809 A US1963809 A US 1963809A US 634779 A US634779 A US 634779A US 63477932 A US63477932 A US 63477932A US 1963809 A US1963809 A US 1963809A
Authority
US
United States
Prior art keywords
krypton
oxygen
air
liquid
column
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 - Lifetime
Application number
US634779A
Other languages
English (en)
Inventor
Schuftan Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Gesellschaft fuer Lindes Eismaschinen AG
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 Gesellschaft fuer Lindes Eismaschinen AG filed Critical Gesellschaft fuer Lindes Eismaschinen AG
Application granted granted Critical
Publication of US1963809A publication Critical patent/US1963809A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F25J3/02—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
    • 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
    • F25J3/04406—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 using a dual pressure main column system
    • F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J3/04624—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 using integrated mass and heat exchange, so-called non-adiabatic rectification, e.g. dephlegmator, reflux exchanger
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04745—Krypton and/or Xenon
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the low pressure column
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/52—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the high pressure column of a double pressure main column system
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/82—Processes or apparatus using other separation and/or other processing means using a reactor with combustion or catalytic reaction
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/50—One fluid being oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/12—Particular process parameters like pressure, temperature, ratios
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/923—Inert gas
    • Y10S62/925—Xenon or krypton

Definitions

  • the present invention relates to a process for obtaining constituents of air having a higher boiling point than oxygen; for example, krypton and xenon.
  • krypton will 5 be used in the following specification and claims as representative of such higher boiling constituents.
  • krypton-free or practically krypton-free washing liquid is essential for the successful operation of the process.
  • the liquid nitrogen obtained in the separation of air could be used for this'purpose, because it has the greatest difference in boiling point from krypton of any of the constituents of air.
  • krypton-free oxygen is used as the washing liquid, which is obtained by liquefying a portion of the separated oxygen by deep cooling in the upper part of the washer.
  • the counter-current washing of the krypton out of the gaseous oxygen is effected most simply in a vertical tube sheaf, into the lower part of which the gaseous oxygen from the evaporator of the separation apparatus flows at about its boiling temperature.
  • the tube sheaf is suitably cooled externally, advantageously by the cold nitrogen coming from the apparatus, which in temperature and amount suffices for the formation of the necessary amount of washing liquid.
  • the formation of the washing liquid can also be effected in a condenser located at the head of the washing column and supplied with liquid air or liquid nitrogen.
  • the further enrichment of the washing liquid in krypton can be effected most simply by returning the washing liquid from the washer into the oxygen evaporator of the air separation apparatus. In this way the krypton becomes more and more concentrated in the liquid oxygen in the evaporator, which at the end of a period of operation may be drawn 01f and worked up into pure krypton.
  • Another method of enrichment which affords the possibility of continuously producing krypton of any desired concentration consists in passing the liquid oxygen coming from the washing column into a rectification column, advantageously situated under the washing column, and heated at its lower end. The vapors coming from this auxiliary column are returned to the lower part of the washingcolumn.
  • this method of operation in order to obtain a quantitative yield of krypton, it is advantageous at' the end of a period of operation of the separation system to vaporize the liquid oxygen remaining in the evaporator into the washing column, or a small amount of liquid oxygen in the evaporator may be allowed to continuously flow into the auxiliary column, in order to avoid the concentrating of krypton in the condenser.
  • l is a diagrammatic representation of apparatus for carrying out one embodiment of the invention
  • Fig. 2 is a diagrammatic representation of apparatus for carrying out another em"- bodiment of the invention.
  • the washing out and concentration of the krypton is efiected in rectification columns.
  • the kryptoncontaining gaseous oxygen from the evaporator 3 of the air separation apparatus is led into the washing column 4, which is provided with rectifying plates.
  • the condensation of the kryptonfree washing liquid takes place in condenser 5 which is cooled with liquid nitrogen supplied through valve 8.
  • the operation of column 4 corresponds in principle with the previously described operation of tube sheaf 5 of Figure 1.
  • the krypton-containing liquid oxygen at the bottom of the column passes into the enriching column 6 and is there further concentrated.
  • the heating of this column isefiected by means of compressed air the amount of which is regulated by valve 9.
  • the highly concentrated krypton can be drawn oil in gaseous form at 10 or can be drawn off from the evaporator 7 in liquid form. By this method of operation it is possible to obtain a continuous production of krypton of any desired concentration.
  • the concentration of krypton in the oxygen depends on the length of time the air separation apparatus is operated.
  • substantially all of the krypton present in the air'treated in a given period of operation will be found in the evaporator liquid. Since the amount of liquid in the evaporator is relatively large and the amount of krypton in the air is only 1:1,000,000, at the end of a normal period of operation only a small percentage of krypton will be found in the evaporator liquid.
  • a further advantage of the new method is that by utilizing gaseous oxygen no obstruction of the rectifier plates by impurities is encountered, since it contains no noticeable trace of harmful impurities.
  • the method of the invention provides a continuous and quantitative separation of krypton from the air in heretofore unattained concentration. It can be operated with the simplest means and at very low cost. Together with the krypton, other substanceshaving higher boiling points than oxygen are obtained, particularly xenon.
  • An improvement in the method for obtaining krypton and xenon and other constituents of air having a higher boiling point than oxygen which comprises separating air by low temperature cooling and rectification into a low'boiling portion consisting of constituents of air of lower boilng point than oxygen and a high boiling portion containing substantially all of the oxygen, vaporizing oxygen from said high boiling portion, and subjecting all of the oxygen vaporized from said high boiling portion to countercurrent washing with liquid oxygen which has been freed of its krypton content by rectification.
  • krypton and xenon and other constituents of air having a higher boiling point than oxygen which comprises separating air by low temperature cooling and rectification into a low boiling portion consisting of constituents of air of lower boiling point than oxygen and a high boiling portion containing substantially all of the oxygen, vaporizing oxygen from said high'boiling portion, passing all of the oxygen vaporized from said high boiling portion into the lower part of a rectification column cooled at its head with liquid nitrogen and subjecting the krypton-containing liquid from said column to rectification in a subjacent column from which the vapors pass into the upper column.

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
US634779A 1931-11-14 1932-09-24 Process of obtaining constituents of air having a higher boiling point than oxygen Expired - Lifetime US1963809A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEG81157D DE566151C (de) 1931-11-14 1931-11-14 Gewinnung der Luftbestandteile mit hoeherem Siedepunkt als Sauerstoff
DEG83534D DE629297C (de) 1931-11-14 1932-09-09 Verfahren zur Beseitigung der durch Kohlenwasserstoffe bedingten Schwierigkeiten bei der Gewinnung von Krypton und Xenon aus Luft durch Rektifikation
DE438196X 1933-05-13

Publications (1)

Publication Number Publication Date
US1963809A true US1963809A (en) 1934-06-19

Family

ID=27205952

Family Applications (2)

Application Number Title Priority Date Filing Date
US634779A Expired - Lifetime US1963809A (en) 1931-11-14 1932-09-24 Process of obtaining constituents of air having a higher boiling point than oxygen
US724821A Expired - Lifetime US2060940A (en) 1931-11-14 1934-05-09 Process for obtaining krypton and xenon

Family Applications After (1)

Application Number Title Priority Date Filing Date
US724821A Expired - Lifetime US2060940A (en) 1931-11-14 1934-05-09 Process for obtaining krypton and xenon

Country Status (7)

Country Link
US (2) US1963809A (xx)
BE (2) BE391302A (xx)
DE (4) DE566151C (xx)
ES (1) ES127972A1 (xx)
FR (2) FR44782E (xx)
GB (3) GB390069A (xx)
NL (2) NL42092C (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423274A (en) * 1945-07-06 1947-07-01 Air Reduction Recovery of the components of air
US2464891A (en) * 1943-08-28 1949-03-22 Linder Air Products Company Process of and apparatus for producing compressed oxygen
US2480093A (en) * 1943-05-27 1949-08-23 Air Prod Inc Method of and apparatus for pumping liquid oxygen
US2497589A (en) * 1947-04-18 1950-02-14 Air Reduction Separation and recovery of the constituents of air
US2509044A (en) * 1947-07-03 1950-05-23 Standard Oil Dev Co Separation of low molecular weight hydrocarbons from petroleum mixtures
US2587820A (en) * 1947-05-16 1952-03-04 Independent Engineering Compan Vapor oxygen recondenser
US3191393A (en) * 1959-12-30 1965-06-29 Air Reduction Krypton-xenon separation from a gas mixture
US3222879A (en) * 1962-02-27 1965-12-14 Stoklosinski Roman Recovery of krypton and xenon from air separation plants
US3751934A (en) * 1970-11-10 1973-08-14 K Frischbier Concentrating krypton and xenon in air separation by liquid oxygen wash
US3779028A (en) * 1970-10-12 1973-12-18 British Oxygen Co Ltd Improved krypton xenon recovery method
JP2004205203A (ja) * 2002-12-12 2004-07-22 Air Products & Chemicals Inc クリプトン及び／又はキセノンの回収方法及び装置

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514921A (en) * 1944-11-16 1950-07-11 Linde Air Prod Co Process and apparatus for separating gas mixtures
US2615312A (en) * 1949-05-07 1952-10-28 Union Carbide & Carbon Corp Process and apparatus for eliminating impurities during the separation of gas mixtures
US2698523A (en) * 1950-04-28 1955-01-04 Carthage Hydrocol Inc Manufacture of krypton and xenon
US2962868A (en) * 1956-02-17 1960-12-06 Air Reduction Method of concentrating kryptonxenon
US2990690A (en) * 1958-10-27 1961-07-04 Spencer Chem Co Argon purification process
DE1099564B (de) * 1959-09-09 1961-02-16 Linde S Eismaschinen Ag Zweign Verfahren und Einrichtung zur Anreicherung von schwerersiedenden Stoffen bei der Zerlegung von Gasgemischen durch Tieftemperaturrektifikation
DE1158534B (de) * 1961-07-05 1963-12-05 Inst Chemie Und Kaelteausruest Verfahren zur Gewinnung eines hochkonzentrierten Krypton-Xenon-Gemisches
JPS5743186A (en) * 1980-08-29 1982-03-11 Nippon Oxygen Co Ltd Production of krypton and xenon
GB8610766D0 (en) * 1986-05-02 1986-06-11 Colley C R Yield of krypton xenon in air separation
GB2453141A (en) * 2007-09-27 2009-04-01 Hd Inspiration B V Method of forming a visor
US20160197669A1 (en) * 2014-12-11 2016-07-07 Tesla Wireless Company LLC Communication method and system that uses low latency/low data bandwidth and high latency/high data bandwidth pathways

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480093A (en) * 1943-05-27 1949-08-23 Air Prod Inc Method of and apparatus for pumping liquid oxygen
US2464891A (en) * 1943-08-28 1949-03-22 Linder Air Products Company Process of and apparatus for producing compressed oxygen
US2423274A (en) * 1945-07-06 1947-07-01 Air Reduction Recovery of the components of air
US2497589A (en) * 1947-04-18 1950-02-14 Air Reduction Separation and recovery of the constituents of air
US2587820A (en) * 1947-05-16 1952-03-04 Independent Engineering Compan Vapor oxygen recondenser
US2509044A (en) * 1947-07-03 1950-05-23 Standard Oil Dev Co Separation of low molecular weight hydrocarbons from petroleum mixtures
US3191393A (en) * 1959-12-30 1965-06-29 Air Reduction Krypton-xenon separation from a gas mixture
US3222879A (en) * 1962-02-27 1965-12-14 Stoklosinski Roman Recovery of krypton and xenon from air separation plants
US3779028A (en) * 1970-10-12 1973-12-18 British Oxygen Co Ltd Improved krypton xenon recovery method
US3751934A (en) * 1970-11-10 1973-08-14 K Frischbier Concentrating krypton and xenon in air separation by liquid oxygen wash
JP2004205203A (ja) * 2002-12-12 2004-07-22 Air Products & Chemicals Inc クリプトン及び／又はキセノンの回収方法及び装置

Also Published As

Publication number Publication date
NL42092C (xx)
GB413518A (en) 1934-07-19
GB438196A (en) 1935-11-07
BE403024A (xx)
GB390069A (en) 1933-03-30
DE629297C (de) 1936-04-27
FR44782E (fr) 1935-04-06
NL39016C (xx)
US2060940A (en) 1936-11-17
DE566151C (de) 1932-12-16
FR743380A (xx) 1933-03-29
DE641715C (de) 1937-02-11
DE631639C (de) 1936-06-24
ES127972A1 (es) 1932-11-01
BE391302A (xx)

Similar Documents

Publication Publication Date Title
US1963809A (en) Process of obtaining constituents of air having a higher boiling point than oxygen
US2547177A (en) Process of and apparatus for separating ternary gas mixtures
US4525187A (en) Dual dephlegmator process to separate and purify syngas mixtures
US1773012A (en) Process for the separation of gas mixtures
JPH0859204A (ja) ガス状混合物の分離方法および装置
US2284662A (en) Process for the production of krypton and xenon
US4805412A (en) Krypton separation
JPS6333633B2 (xx)
US2386297A (en) Separation of the constituents of gaseous mixtures by liquefaction and rectification
US2482304A (en) Recovery of the constituents of gaseous mixtures
US2051576A (en) Recovery of krypton and xenon
US2214790A (en) Process and apparatus for separating gases
US2698523A (en) Manufacture of krypton and xenon
US2934908A (en) High argon recovery using proper shelf-top pinch principle
US2559132A (en) Fractional separation of air
US3807185A (en) Helium-enriched helium-hydrogen mixture from ammonia synthesis vent gas using regenerators to congeal residual nitrogen
US1512268A (en) Process for the separation and purification of argon and other rare gases of the atmosphere
US3222879A (en) Recovery of krypton and xenon from air separation plants
US1638005A (en) Process of separation of the elements of air or of other gaseous mixtures by liquefaction and rectification
USRE19267E (en) Method for separating the con
US3390534A (en) Method for separation of multicomponent mixtures
US3333434A (en) Process for separating oxygen from air
US1607708A (en) Separation of the constituents of gaseous mixtures
US1360853A (en) Apparatus and method for separating the constituents of air or other gaseous mixtures
US1498766A (en) Method and apparatus for separating the constituents of gaseous mixtures