GB1523434A - Production of nitrogen - Google Patents

Production of nitrogen

Info

Publication number
GB1523434A
GB1523434A GB3746274A GB3746274A GB1523434A GB 1523434 A GB1523434 A GB 1523434A GB 3746274 A GB3746274 A GB 3746274A GB 3746274 A GB3746274 A GB 3746274A GB 1523434 A GB1523434 A GB 1523434A
Authority
GB
United Kingdom
Prior art keywords
heat exchanger
liquefied
air
work
nitrogen
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
GB3746274A
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.)
Petrocarbon Developments Ltd
Original Assignee
Petrocarbon Developments 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 Petrocarbon Developments Ltd filed Critical Petrocarbon Developments Ltd
Priority to GB3746274A priority Critical patent/GB1523434A/en
Publication of GB1523434A publication Critical patent/GB1523434A/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
    • F25J3/044—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 single pressure main column system only
    • 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
    • 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
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/42—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being nitrogen

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

1523434 Air separation PETROCARBON DEVELOPMENTS Ltd 8 Oct 1975 37462/74 Heading F4P In an air separation process for obtaining gaseous nitrogen, in which the cold is produced by work expansion of at least part of at least one of the process streams, the work produced by the expansion is used to increase the pressure of the product nitrogen gas. As shown, air is compressed at 10, impurities are removed in adsorbers 11, and the air is cooled and partly liquefied in heat exchangers 12, 13 before introduction to column 15. Liquefied "bottoms" is expanded at nozzle 18 vaporized in heat exchanger 14 and further warmed in heat exchanger 13 then work expanded in a turbine 16. Gaseous nitrogen product is withdrawn at the top 35 of column 15, a portion is liquefied in heat exchanger 14 and refluxed at 38, whilst the remainder is passed through heat exchanger 12 before being compressed by blower 17 driven by turbine 16. Some liquefied nitrogen product may be withdrawn at 39.
GB3746274A 1975-10-08 1975-10-08 Production of nitrogen Expired GB1523434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3746274A GB1523434A (en) 1975-10-08 1975-10-08 Production of nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3746274A GB1523434A (en) 1975-10-08 1975-10-08 Production of nitrogen

Publications (1)

Publication Number Publication Date
GB1523434A true GB1523434A (en) 1978-08-31

Family

ID=10396670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3746274A Expired GB1523434A (en) 1975-10-08 1975-10-08 Production of nitrogen

Country Status (1)

Country Link
GB (1) GB1523434A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120374A (en) * 1982-05-11 1983-11-30 Petrocarbon Dev Ltd Improvements in the production of nitrogen from air
EP0557935A1 (en) * 1992-02-24 1993-09-01 Praxair Technology, Inc. Cryogenic rectification system for producing high pressure nitrogen product
EP0624767A1 (en) * 1993-05-13 1994-11-17 The Boc Group, Inc. Process and apparatus for producing oxygen
FR3118146A1 (en) * 2020-12-22 2022-06-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air separation process by cryogenic distillation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120374A (en) * 1982-05-11 1983-11-30 Petrocarbon Dev Ltd Improvements in the production of nitrogen from air
EP0557935A1 (en) * 1992-02-24 1993-09-01 Praxair Technology, Inc. Cryogenic rectification system for producing high pressure nitrogen product
JPH0611256A (en) * 1992-02-24 1994-01-21 Praxair Technol Inc Cryogenic rectification system for manufacturing high-pressure nitrogen product
EP0624767A1 (en) * 1993-05-13 1994-11-17 The Boc Group, Inc. Process and apparatus for producing oxygen
AU680472B2 (en) * 1993-05-13 1997-07-31 Boc Group, Inc., The Single column process and apparatus for producing oxygen at above atmospheric pressure
FR3118146A1 (en) * 2020-12-22 2022-06-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air separation process by cryogenic distillation
WO2022136060A1 (en) * 2020-12-22 2022-06-30 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for separating air by cryogenic distillation

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee