GB708664A - Improvements in or relating to the cold separation of air - Google Patents

Improvements in or relating to the cold separation of air

Info

Publication number
GB708664A
GB708664A GB2426551A GB2426551A GB708664A GB 708664 A GB708664 A GB 708664A GB 2426551 A GB2426551 A GB 2426551A GB 2426551 A GB2426551 A GB 2426551A GB 708664 A GB708664 A GB 708664A
Authority
GB
United Kingdom
Prior art keywords
temperature gradient
cold
demand
variations
rectification
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
GB2426551A
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
Priority to BE514872D priority Critical patent/BE514872A/xx
Priority to NLAANVRAGE7808075,A priority patent/NL173140B/en
Application filed by British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB2426551A priority patent/GB708664A/en
Priority to FR1064492D priority patent/FR1064492A/en
Priority to DEB22480A priority patent/DE958387C/en
Publication of GB708664A publication Critical patent/GB708664A/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
    • 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
    • F25J3/04793—Rectification, e.g. columns; Reboiler-condenser
    • 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

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

708,664. Cold separation of air. BRITISH OXYGEN CO., Ltd., and SCHUFTAN, P. M. Oct. 14, 1952 [Oct. 17, 1951], No. 24266/51. Class 8 (2). In an air separation process comprising liquefaction and subsequent rectification wherein the cold supplied is equal to the average requirement of the plant, the temperature gradient in the rectification zone is automatically maintained substantially unchanged and independent of temporary variations in the refrigeration performance of the plant. A vapour pressure thermometer 6 is located at a point 7 of maximum temperature gradient in the low pressure zone of a conventional double column and the temperature gradient is maintained constant by a valve 4 actuated by a controller 5 and controlling flow at oxygen-rich liquid from the sump 1 of the high pressure zone through a line 2 to a tray 3. The capacity of the sump 1 is made sufficiently high to allow of variations in level caused by variations in demand by the low pressure zone. In a modification the temperature gradient is maintained constant by withdrawing excess liquid formed when the refrigeration applied exceeds the demand, storing it and automatically returning it to the rectification column when the cold demand exceeds the refrigeration supply.
GB2426551A 1951-10-17 1951-10-17 Improvements in or relating to the cold separation of air Expired GB708664A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE514872D BE514872A (en) 1951-10-17
NLAANVRAGE7808075,A NL173140B (en) 1951-10-17 DEVICE FOR SEPARATING A MIXTURE OF TWO NON-OR INCOMPLETELY MISCIBLE LIQUIDS OF DIFFERENT TYPES OF WEIGHT.
GB2426551A GB708664A (en) 1951-10-17 1951-10-17 Improvements in or relating to the cold separation of air
FR1064492D FR1064492A (en) 1951-10-17 1952-10-17 Air separation process
DEB22480A DE958387C (en) 1951-10-17 1952-10-17 Process for separating air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2426551A GB708664A (en) 1951-10-17 1951-10-17 Improvements in or relating to the cold separation of air

Publications (1)

Publication Number Publication Date
GB708664A true GB708664A (en) 1954-05-05

Family

ID=10208998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2426551A Expired GB708664A (en) 1951-10-17 1951-10-17 Improvements in or relating to the cold separation of air

Country Status (5)

Country Link
BE (1) BE514872A (en)
DE (1) DE958387C (en)
FR (1) FR1064492A (en)
GB (1) GB708664A (en)
NL (1) NL173140B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323533A (en) * 2018-11-06 2019-02-12 杭州杭氧股份有限公司 Pressure rectifying column reduces space division energy consuming process and device in a kind of use

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1626338B1 (en) * 1960-05-02 1969-09-18 Union Carbide Corp Method and device for the production of oxygen, nitrogen and argon by separating air

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB659648A (en) * 1949-04-19 1951-10-24 British Oxygen Co Ltd Improvements in or relating to the separation of air

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323533A (en) * 2018-11-06 2019-02-12 杭州杭氧股份有限公司 Pressure rectifying column reduces space division energy consuming process and device in a kind of use
CN109323533B (en) * 2018-11-06 2023-10-20 杭氧集团股份有限公司 Method and device for reducing space division energy consumption by using medium-pressure rectifying tower

Also Published As

Publication number Publication date
FR1064492A (en) 1954-05-13
DE958387C (en) 1957-02-21
NL173140B (en)
BE514872A (en)

Similar Documents

Publication Publication Date Title
GB747298A (en) Improvements in the cold separation of air
GB1038465A (en) Improvements in or relating to refrigeration systems
GB1384397A (en) Refrigeration plants
GB742779A (en) Improvements in process of, and apparatus for low-temperature separation of air
US1539450A (en) Method of separating the constituents of gaseous mixtures
US2161312A (en) Refrigerating apparatus control
GB708664A (en) Improvements in or relating to the cold separation of air
GB826298A (en) Process for air separation by liquefaction and rectification
GB698310A (en) Improvements in or relating to absorption refrigeration systems
GB699429A (en) Improvements in or relating to the dispensing of gases
GB659648A (en) Improvements in or relating to the separation of air
GB1512507A (en) Oil injected screw compressor apparatus
GB739251A (en) Improvements in or relating to absorption refrigeration systems
GB789051A (en) Improvements in or relating to gas-mixture fractionation apparatus
US2788638A (en) Process of and apparatus for separation of gas mixtures
GB859060A (en) Refrigeration plant
GB765641A (en) Method and apparatus for the operation of refrigerating systems with throttling nozzles
GB701892A (en) Improvements in and relating to refrigeration systems
GB798770A (en) Improvements in refrigeration systems
GB884454A (en) Control of apparatus operating at high and low temperatures
GB890342A (en) Low temperature air separation with improved argon recovery
SU245154A1 (en) AIR DIVIDING SYSTEM WITH GAS OXYGEN ISSUE UNDER EXCESS RATING PRESSURE
GB1031107A (en) Improvements in or relating to the production of low temperatures
GB607458A (en) Fire extinguishing system and method
GB1112663A (en) Refrigeration system