JPH01260283A - 空気分離装置 - Google Patents

空気分離装置

Info

Publication number
JPH01260283A
JPH01260283A JP8715488A JP8715488A JPH01260283A JP H01260283 A JPH01260283 A JP H01260283A JP 8715488 A JP8715488 A JP 8715488A JP 8715488 A JP8715488 A JP 8715488A JP H01260283 A JPH01260283 A JP H01260283A
Authority
JP
Japan
Prior art keywords
air
oxygen
compressor
expansion turbine
heat exchanger
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
JP8715488A
Other languages
English (en)
Other versions
JP2685483B2 (ja
Inventor
Junichi Hosokawa
純一 細川
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 JP63087154A priority Critical patent/JP2685483B2/ja
Publication of JPH01260283A publication Critical patent/JPH01260283A/ja
Application granted granted Critical
Publication of JP2685483B2 publication Critical patent/JP2685483B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • 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
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of 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
    • 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
    • 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
    • F25J2250/50—One fluid being oxygen

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は空気分離装置に係！Ｊ、特に液体酸素を気化さ
せるガスの昇圧に好適な菟気分離５１１ｅこ関するもの
である。
〔従来の技術〕
従来の空気分ｍＷｔｍは、精留塔より抜き出された液体
酸素をポンプで外圧後、熱交換器に供給し該熱交換器で
液体酸素を蒸発するために、空気等のガスを、昇圧機で
所定の圧力まで昇圧していた。
即ち、ポンプで昇圧された液体酸素の沸点が上昇するた
め、これを蒸発させる空気等のガスも空気分離装置の運
転圧力以上に昇圧する必要があった。なお、この種の装
置とし・て関連するものには例えば特開昭５６−８０６
８１号が挙げられる。
〔発明が解決しようとする課題〕
上記従来技術は昇圧機の消ｖＲ動力が大きくなることに
ついて配慮がされておらず、空気等のガスの昇圧を電動
機で駆動する昇圧機で行っていたため、空気等のガスの
昇圧に要する消費動力が大きくなっていた。
本発明の目的は、ｉｆｆ記空気等のガスの昇圧に必要な
消費動力を低減する空気分１１１＊ｉｌを提供すること
にある。
〔課題を解決するための手段〕
上記目的は、膨張タービンを駆動源とする圧縮機を設け
、該圧ＮＪ機により空気等のガスを昇圧することにより
、達成される。
〔作　　用〕
従来の膨張タービンは空気分離装置の寒冷発生のため、
空気を断熱膨張させる一方で、この寒冷相当の動力を回
収している。この動力回収は空気分離装置を運転するた
めに必然的に行われているものである。本発明は膨張タ
ービンの回収動力を駆動源として、圧縮機を稼動させ該
圧縮機により空気等のガスの昇圧を行ない、所定圧力ま
で昇圧するのに必要な消費動力を低減することができる
。
〔実　施　例〕
以下１本発明の一実施例を第１図により説明する。
図において、原料空気の一部は空気熱交換器１で冷却さ
ｎ精留塔６に送気され、製品である酸素と魔鴛索とに精
留分離される。空気熱交換器ｌに送気された原料空気の
一部は空気熱交換器！より中間抽出（気）され、膨張タ
ービン３にて断熱膨張され、寒冷を発生する。一方酸素
は液状で精留塔６より抜き出され、ポンプ７にて昇圧ｉ
、＠索熱又換器５で、空気昇圧機２および膨張タービン
３で駆動される圧縮機４で所定の圧力まで昇圧された空
気と熱交換することにより、蒸発気化し後流に送気され
る。
本実施例によれば、膨張タービン３の回収動力を空気の
昇圧に有効に利用できるため、空気昇圧機２の消費動力
を低減できる効果がある。
本発明は酸素の蒸発媒体として空気に限定するものでは
な（、媒体として窒素等を用いる場合にも適用できるも
のである。
〔発明の効果〕
本発明によれば、酸素を蒸発、気化する空気等のガスの
昇圧に必要な動力を低減できるので、装置のランニング
コストを低減できる効果がある。
【図面の簡単な説明】
第１図は本発明の一実施例の空気分離装置の系統図であ
る。

Claims (1)

    【特許請求の範囲】
  1. １、前処理装置、空気昇圧機、膨張タービン、精留塔よ
    り成る空気分離装置において、前記精留塔で分離液化し
    た酸素をポンプを介して酸素熱交換器に導くと共に、原
    料空気の一部を空気昇圧機を介して膨張タービンで駆動
    される圧縮機に導き、該圧縮機で昇圧した空気を前記酸
    素熱交換器に導くように構成したことを特徴とする空気
    分離装置。
JP63087154A 1988-04-11 1988-04-11 空気分離装置 Expired - Fee Related JP2685483B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63087154A JP2685483B2 (ja) 1988-04-11 1988-04-11 空気分離装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63087154A JP2685483B2 (ja) 1988-04-11 1988-04-11 空気分離装置

Publications (2)

Publication Number Publication Date
JPH01260283A true JPH01260283A (ja) 1989-10-17
JP2685483B2 JP2685483B2 (ja) 1997-12-03

Family

ID=13907067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63087154A Expired - Fee Related JP2685483B2 (ja) 1988-04-11 1988-04-11 空気分離装置

Country Status (1)

Country Link
JP (1) JP2685483B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758733A2 (de) * 1995-08-11 1997-02-19 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturrektifikation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194711A (ja) * 1982-05-03 1983-11-12 リンデ・アクチエンゲゼルシヤフト 高圧状態でガス状酸素を回収する方法及び装置
JPS6399483A (ja) * 1986-10-15 1988-04-30 株式会社日立製作所 空気分離装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194711A (ja) * 1982-05-03 1983-11-12 リンデ・アクチエンゲゼルシヤフト 高圧状態でガス状酸素を回収する方法及び装置
JPS6399483A (ja) * 1986-10-15 1988-04-30 株式会社日立製作所 空気分離装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758733A2 (de) * 1995-08-11 1997-02-19 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturrektifikation
EP0758733A3 (de) * 1995-08-11 1997-07-30 Linde Ag Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturrektifikation
US5845517A (en) * 1995-08-11 1998-12-08 Linde Aktiengesellschaft Process and device for air separation by low-temperature rectification

Also Published As

Publication number Publication date
JP2685483B2 (ja) 1997-12-03

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