GB1329222A - Control of air separation apparatus - Google Patents

Control of air separation apparatus

Info

Publication number
GB1329222A
GB1329222A GB23171A GB23171A GB1329222A GB 1329222 A GB1329222 A GB 1329222A GB 23171 A GB23171 A GB 23171A GB 23171 A GB23171 A GB 23171A GB 1329222 A GB1329222 A GB 1329222A
Authority
GB
United Kingdom
Prior art keywords
valve
withdrawn
line
jan
column
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
GB23171A
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of GB1329222A publication Critical patent/GB1329222A/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
    • F25J3/04248—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
    • 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
    • F25J3/04763—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
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/40—One fluid being air
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/42—One fluid being nitrogen
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/52—One fluid being oxygen enriched compared to air, e.g. "crude 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
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods

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

1329222 Air rectification process KOBE STEEL Ltd 4 Jan 1971 [9 Jan 1970] 231/71 Heading F4P In a compressed air rectification process wherein feed air in a line 3 is cooled in reversing heat exchangers 4, 5 and liquefied at 9 before entering a column 8 having a reflux-forming condenser-evaporator 16 from the vapour space of which oxygen-rich vapour is withdrawn at 19 and is divided by a by-pass valve 32 into a major portion 20 which is turbine-expanded at 26 and then added at 29 to the minor by-pass portion 33, the valve 32 is opened to a degree dependent on an increase in liquid level on the evaporator side 15 and also dependent on a predetermined pressure difference at 15 resulting from a change in the degree of valve opening. Valve 32 is controlled by gas pressure and liquid level indicating means P1C, L1C respectively responsive to electrical signals from transmitters 101, 102. Product oxygen-rich gas leaves exchanger 4 in a line 31, product nitrogen gas is withdrawn from column 8 and exchanger 4 through a line 36 and liquid nitrogen may be withdrawn at 35 into a weigh vessel 34.
GB23171A 1970-01-09 1971-01-04 Control of air separation apparatus Expired GB1329222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45002800A JPS4940071B1 (en) 1970-01-09 1970-01-09

Publications (1)

Publication Number Publication Date
GB1329222A true GB1329222A (en) 1973-09-05

Family

ID=11539431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23171A Expired GB1329222A (en) 1970-01-09 1971-01-04 Control of air separation apparatus

Country Status (5)

Country Link
US (1) US3735599A (en)
JP (1) JPS4940071B1 (en)
DE (1) DE2100397B2 (en)
FR (1) FR2076020B1 (en)
GB (1) GB1329222A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2335096C2 (en) * 1973-07-10 1982-03-18 Linde Ag, 6200 Wiesbaden Method and device for the production of gaseous oxygen and gaseous nitrogen
DE3018476C2 (en) * 1979-05-16 1984-10-25 Hitachi, Ltd., Tokio/Tokyo Process and plant for the production of gaseous nitrogen
US4400188A (en) * 1981-10-27 1983-08-23 Air Products And Chemicals, Inc. Nitrogen generator cycle
JPH0721378B2 (en) * 1985-08-12 1995-03-08 大同ほくさん株式会社 Oxygen gas production equipment
DE3663997D1 (en) * 1985-08-23 1989-07-20 Daido Oxygen Oxygen gas production unit
US4783210A (en) * 1987-12-14 1988-11-08 Air Products And Chemicals, Inc. Air separation process with modified single distillation column nitrogen generator
US4834785A (en) * 1988-06-20 1989-05-30 Air Products And Chemicals, Inc. Cryogenic nitrogen generator with nitrogen expander
US5004482A (en) * 1989-05-12 1991-04-02 Union Carbide Corporation Production of dry, high purity nitrogen
US4931070A (en) * 1989-05-12 1990-06-05 Union Carbide Corporation Process and system for the production of dry, high purity nitrogen
US5116396A (en) * 1989-05-12 1992-05-26 Union Carbide Industrial Gases Technology Corporation Hybrid prepurifier for cryogenic air separation plants
US4934148A (en) * 1989-05-12 1990-06-19 Union Carbide Corporation Dry, high purity nitrogen production process and system
US4957524A (en) * 1989-05-15 1990-09-18 Union Carbide Corporation Air separation process with improved reboiler liquid cleaning circuit
US5257206A (en) * 1991-04-08 1993-10-26 Praxair Technology, Inc. Statistical process control for air separation process
DE4206923A1 (en) * 1992-03-05 1993-09-09 Linde Ag METHOD AND DEVICE FOR DISASSEMBLING A GAS MIXTURE
FR2694383B1 (en) * 1992-07-29 1994-09-16 Air Liquide Production and installation of nitrogen gas production with several different purities.
US5996373A (en) * 1998-02-04 1999-12-07 L'air Liquide, Societe Ananyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryogenic air separation process and apparatus
US6189329B1 (en) * 2000-04-04 2001-02-20 Venturedyne Limited Cascade refrigeration system
US8429933B2 (en) * 2007-11-14 2013-04-30 Praxair Technology, Inc. Method for varying liquid production in an air separation plant with use of a variable speed turboexpander

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460859A (en) * 1944-05-01 1949-02-08 Kellogg M W Co Method of gas separation including impurity removing steps
US2552560A (en) * 1945-12-05 1951-05-15 Hydrocarbon Research Inc Process of producing oxygen
US2537044A (en) * 1946-11-29 1951-01-09 Hydrocarbon Research Inc Continuous method of producing oxygen involving the use of a thermophore and the purging thereof
GB659648A (en) * 1949-04-19 1951-10-24 British Oxygen Co Ltd Improvements in or relating to the separation of air
US2846853A (en) * 1954-06-01 1958-08-12 Union Carbide Corp High pressure scrubber liquefier in air separation systems
US2962868A (en) * 1956-02-17 1960-12-06 Air Reduction Method of concentrating kryptonxenon
US3203193A (en) * 1963-02-06 1965-08-31 Petrocarbon Dev Ltd Production of nitrogen
US3264830A (en) * 1963-08-09 1966-08-09 Air Reduction Separation of the elements of air
US3312074A (en) * 1964-05-06 1967-04-04 Hydrocarbon Research Inc Air separation plant
US3340697A (en) * 1964-05-06 1967-09-12 Hydrocarbon Research Inc Heat exchange of crude oxygen and expanded high pressure nitrogen
US3319427A (en) * 1964-05-06 1967-05-16 Hydrocarbon Research Inc Air separation with a nitrogen refrigeration circuit
DE1222088B (en) * 1965-06-16 1966-08-04 Linde Ag Method and device for decomposing a gas mixture at low temperature
US3375673A (en) * 1966-06-22 1968-04-02 Hydrocarbon Research Inc Air separation process employing work expansion of high and low pressure nitrogen

Also Published As

Publication number Publication date
DE2100397B2 (en) 1981-04-16
DE2100397A1 (en) 1971-08-12
JPS4940071B1 (en) 1974-10-30
FR2076020A1 (en) 1971-10-15
FR2076020B1 (en) 1973-12-07
US3735599A (en) 1973-05-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee