GB1523434A – Production of nitrogen
– Google Patents
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
1975-10-08
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.)
1975-10-08
Filing date
1975-10-08
Publication date
1978-08-31
1975-10-08
Application filed by Petrocarbon Developments Ltd
filed
Critical
Petrocarbon Developments Ltd
1975-10-08
Priority to GB3746274A
priority
Critical
patent/GB1523434A/en
1978-08-31
Publication of GB1523434A
publication
Critical
patent/GB1523434A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
1975
1975-10-08
GB
GB3746274A
patent/GB1523434A/en
not_active
Expired
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
1978-12-29
PS
Patent sealed
1986-06-11
PCNP
Patent ceased through non-payment of renewal fee
