JPS5449992A - Air separator - Google Patents

Air separator

Info

Publication number
JPS5449992A
JPS5449992A JP11561777A JP11561777A JPS5449992A JP S5449992 A JPS5449992 A JP S5449992A JP 11561777 A JP11561777 A JP 11561777A JP 11561777 A JP11561777 A JP 11561777A JP S5449992 A JPS5449992 A JP S5449992A
Authority
JP
Japan
Prior art keywords
tower
liquid
upper tower
rectifying
air
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.)
Granted
Application number
JP11561777A
Other languages
Japanese (ja)
Other versions
JPS6110749B2 (en
Inventor
Masato Hamauzu
Naohiro Ishizu
Masahiro Yamazaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11561777A priority Critical patent/JPS5449992A/en
Publication of JPS5449992A publication Critical patent/JPS5449992A/en
Publication of JPS6110749B2 publication Critical patent/JPS6110749B2/ja
Granted 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
    • F25J3/0429—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 of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
    • 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
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream 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
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams

Abstract

PURPOSE:To provide an air separator adopting a changeover type heat exchanger and havnig such a constitution that air leaving an expansion turbine is introduced into the lower part of the upper tower of a dual rectifying tower, cooled with liquid O2, and blown into the upper part of the upper tower to remarkably improve the ratio of the amt. of falling liquid and that of rising gas at the lower part of the upper tower. CONSTITUTION:Air is expanded with expansion turbine 10 to generate chilliness necessary for the apparatus, introduced 11 into main condenser 5 provided between the upper tower and the lower tower of dual rectifying tower 4, cooled to a temp. near the saturation temp. of liquid O2 with liquid O2 stored outside the tube of condenser 5, and then introduced 15 into the upper part of the upper tower of tower 4. Thus, the ratio of the amt. of falling liquid and that of rising gas can be improved remarkably at the lower part of the upper tower, and the yield of product oxygen can be enhanced in case the number of rectifying stages at the lower part of the upper tower is equal to that of a conventional apparatus. In case the yield of product oxygen is equal, the number of rectifying stages can be reduced and hence the performance of tower 4 can be improved.
JP11561777A 1977-09-28 1977-09-28 Air separator Granted JPS5449992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11561777A JPS5449992A (en) 1977-09-28 1977-09-28 Air separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11561777A JPS5449992A (en) 1977-09-28 1977-09-28 Air separator

Publications (2)

Publication Number Publication Date
JPS5449992A true JPS5449992A (en) 1979-04-19
JPS6110749B2 JPS6110749B2 (en) 1986-03-31

Family

ID=14667080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11561777A Granted JPS5449992A (en) 1977-09-28 1977-09-28 Air separator

Country Status (1)

Country Link
JP (1) JPS5449992A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58106377A (en) * 1981-12-09 1983-06-24 ユニオン・カ−バイド・コ−ポレ−シヨン Improved air separation method reducing degree of superheat of exhaust gas of turbine
US4804824A (en) * 1986-09-26 1989-02-14 Tokyo Electric Co., Ltd. Register drawer assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58106377A (en) * 1981-12-09 1983-06-24 ユニオン・カ−バイド・コ−ポレ−シヨン Improved air separation method reducing degree of superheat of exhaust gas of turbine
JPS627465B2 (en) * 1981-12-09 1987-02-17 Union Carbide Corp
US4804824A (en) * 1986-09-26 1989-02-14 Tokyo Electric Co., Ltd. Register drawer assembly

Also Published As

Publication number Publication date
JPS6110749B2 (en) 1986-03-31

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