GB786296A - Improvements in or relating to the low-temperature separation of air - Google Patents

Improvements in or relating to the low-temperature separation of air

Info

Publication number
GB786296A
GB786296A GB1493655A GB1493655A GB786296A GB 786296 A GB786296 A GB 786296A GB 1493655 A GB1493655 A GB 1493655A GB 1493655 A GB1493655 A GB 1493655A GB 786296 A GB786296 A GB 786296A
Authority
GB
United Kingdom
Prior art keywords
air
zone
reflux
separation
ducts
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
Application number
GB1493655A
Inventor
Paul Maurice Schuftan
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB1493655A priority Critical patent/GB786296A/en
Publication of GB786296A publication Critical patent/GB786296A/en
Expired legal-status Critical Current

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

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

786,296. Cold separation of air. BRITISH OXYGEN CO., Ltd. May 2, 1956 [May 24, 1955], No. 14936/55. Class 8(2). Separation of substantially pure nitrogen in the gaseous phase from cold compressed air is effected in a secondary zone 7 of a rectification column having a primary zone 1 to which is fed cold compressed air through a duct 2, and reflux air through a duct 6 after condensation of air at a higher pressure in a coil 4 and expansion at a valve 5, reflux for the head of rectification zone 7 being provided by withdrawing part of the pure nitrogen leaving said zone through ducts 8, 9 compressing at 11, cooling in exchangers 12, 10, condensing in a coil 13 in heat exchanger with reflux air and expansion at a valve 14. Pure product nitrogen gas, crude nitrogen gas and crude oxygen gas leave by ducts 15, 16, 17 respectively.
GB1493655A 1955-05-24 1955-05-24 Improvements in or relating to the low-temperature separation of air Expired GB786296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1493655A GB786296A (en) 1955-05-24 1955-05-24 Improvements in or relating to the low-temperature separation of air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1493655A GB786296A (en) 1955-05-24 1955-05-24 Improvements in or relating to the low-temperature separation of air

Publications (1)

Publication Number Publication Date
GB786296A true GB786296A (en) 1957-11-13

Family

ID=10050157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1493655A Expired GB786296A (en) 1955-05-24 1955-05-24 Improvements in or relating to the low-temperature separation of air

Country Status (1)

Country Link
GB (1) GB786296A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210950A (en) * 1960-09-26 1965-10-12 Air Prod & Chem Separation of gaseous mixtures
US3258930A (en) * 1961-02-23 1966-07-05 Linde Eismasch Ag Process and apparatus for separating gaseous mixtures by low-temperature rectification
CN111939582A (en) * 2020-07-28 2020-11-17 杭州华润老桐君药业有限公司 Ethanol preparation purification system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210950A (en) * 1960-09-26 1965-10-12 Air Prod & Chem Separation of gaseous mixtures
US3258930A (en) * 1961-02-23 1966-07-05 Linde Eismasch Ag Process and apparatus for separating gaseous mixtures by low-temperature rectification
CN111939582A (en) * 2020-07-28 2020-11-17 杭州华润老桐君药业有限公司 Ethanol preparation purification system
CN111939582B (en) * 2020-07-28 2021-11-05 杭州华润老桐君药业有限公司 Ethanol preparation purification system

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