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IT1037653B - PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES - Google Patents

PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES

Info

Publication number
IT1037653B
IT1037653B IT2276275A IT2276275A IT1037653B IT 1037653 B IT1037653 B IT 1037653B IT 2276275 A IT2276275 A IT 2276275A IT 2276275 A IT2276275 A IT 2276275A IT 1037653 B IT1037653 B IT 1037653B
Authority
IT
Italy
Prior art keywords
air
condenser
vol
liquefied
per cent
Prior art date
Application number
IT2276275A
Other languages
Italian (it)
Inventor
Anatolievich Golovko Georgy
Original Assignee
Le T I Kholodilnoi Prom
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 Le T I Kholodilnoi Prom filed Critical Le T I Kholodilnoi Prom
Application granted granted Critical
Publication of IT1037653B publication Critical patent/IT1037653B/en

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
    • F25J3/02—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
    • F25J3/04296—Claude expansion, i.e. expanded into the main or 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04709—Producing crude argon in a crude argon column as an auxiliary column system in at least a dual pressure main column system
    • F25J3/04715—The auxiliary column system simultaneously produces 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
    • 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
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, 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
    • 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
    • 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
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • F25J2215/56—Ultra high purity oxygen, i.e. generally more than 99,9% O2

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)

Abstract

1471496 Separating air LENINGRAD TEKHNOLOGICH INST KHOLODIL PROMYSHLEN 21 April 1975 [26 April 1974] 16323/75 Heading F4P An air separation process comprises removing dust from the feed air at 1, compressing it to 180-200 kgl./cm.<SP>2</SP> at 2, removing CO 2 and acetylene at 5 and drying the air to give it a dew point of - 60‹ to - 70‹ C., cooling a part of the dried air at 7 to below the saturation point to partially condense it, the other part being expanded at 6, and then recombining the parts before passing them to a preliminary rectification column 8 to produce liquefied N 2 from condenser 9 and an O 2 -enriched liquefied air bottoms, and supercooling the liquefied N 2 and bottoms at 11 before subjecting them to secondary rectification in column 12 to produce a gaseous N 2 overhead containing less than 0À3 vol. per cent O 2 and Argon impurities, a gaseous O 2 -A mixture, and a liquefied O 2 -A mixture which is used to liquefy the N 2 in condenser 9 and which contains up to 4À5 vol. per cent Argon, the gaseous O 2 -A mixture being then subjected to further rectification in column 13 to produce an argon fraction from condenser 14 which has 0À1-3À0 vol. per cent O 2 and less than 0À1 vol. per cent N 2 therein, and an O 2 fraction from the intertube space of condenser 10 of 99À7 to 99À99% purity.
IT2276275A 1974-04-26 1975-04-24 PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES IT1037653B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2015808 1974-04-26

Publications (1)

Publication Number Publication Date
IT1037653B true IT1037653B (en) 1979-11-20

Family

ID=20581885

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2276275A IT1037653B (en) 1974-04-26 1975-04-24 PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES

Country Status (7)

Country Link
JP (1) JPS51130695A (en)
CS (1) CS180852B1 (en)
DD (1) DD120081A1 (en)
DE (1) DE2518012A1 (en)
FR (1) FR2269044B1 (en)
GB (1) GB1471496A (en)
IT (1) IT1037653B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345925A (en) * 1980-11-26 1982-08-24 Union Carbide Corporation Process for the production of high pressure oxygen gas
JPS61259077A (en) * 1986-05-08 1986-11-17 株式会社神戸製鋼所 Method of separating air
US4822395A (en) * 1988-06-02 1989-04-18 Union Carbide Corporation Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery
DE19700644A1 (en) * 1997-01-10 1998-07-16 Linde Ag Removal of acetylene during air separation

Also Published As

Publication number Publication date
DE2518012A1 (en) 1975-11-06
DD120081A1 (en) 1976-05-20
GB1471496A (en) 1977-04-27
FR2269044A1 (en) 1975-11-21
JPS51130695A (en) 1976-11-13
FR2269044B1 (en) 1979-03-30
CS180852B1 (en) 1978-02-28

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