JP5647853B2 - 空気液化分離方法及び装置 - Google Patents
空気液化分離方法及び装置 Download PDFInfo
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- JP5647853B2 JP5647853B2 JP2010231090A JP2010231090A JP5647853B2 JP 5647853 B2 JP5647853 B2 JP 5647853B2 JP 2010231090 A JP2010231090 A JP 2010231090A JP 2010231090 A JP2010231090 A JP 2010231090A JP 5647853 B2 JP5647853 B2 JP 5647853B2
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- 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
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- 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
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- 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
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
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- 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
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/042—Division of the main heat exchange line in consecutive sections having different functions having an intermediate feed connection
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- 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
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- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
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- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- F25J3/04703—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser being arranged in more than one vessel
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- 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
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/58—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being argon or crude argon
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- 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)
Description
Claims (4)
- 原料空気圧縮機で圧縮し、精製器で精製し、主熱交換器で冷却した原料空気を中圧塔、低圧塔及びアルゴン塔で深冷液化分離することによって少なくとも製品アルゴンと中圧製品酸素ガスとを採取する空気液化分離方法において、前記原料空気圧縮機で前記中圧塔に導入可能な中圧に昇圧して前記精製器で精製した中圧原料空気を第1中圧原料空気、第2中圧原料空気及び第3中圧原料空気に3分流する工程と、前記第1中圧原料空気を前記主熱交換器で冷却して前記中圧塔の下部に導入する工程と、前記第2中圧原料空気を更に昇圧して高圧原料空気とする工程と、前記高圧原料空気を前記主熱交換器で冷却した後に前記中圧塔に導入可能な中圧に減圧して前記中圧塔の下部に導入する工程と、前記第3中圧原料空気を更に昇圧した後に前記主熱交換器で中間温度に冷却してから膨張タービンで前記中圧製品酸素ガスの気化前の中圧液化酸素の沸点よりも高い温度でかつ前記低圧塔に導入可能な低圧に膨張させて低圧原料空気とする工程と、前記低圧原料空気を前記主熱交換器で冷却して前記低圧塔の中段上部に導入する工程と、前記中圧塔及び低圧塔での蒸留操作によって低圧塔の底部に濃縮した液化酸素を抜き出して液化酸素ポンプで昇圧して前記中圧液化酸素とする工程と、前記中圧液化酸素を前記主熱交換器で気化させて前記中圧製品酸素ガスとする工程と、前記低圧塔の中段下部から抜き出したガスを前記アルゴン塔で蒸留して前記製品アルゴンとする工程とを含むことを特徴とする空気液化分離方法。
- 原料空気圧縮機で圧縮し、精製器で精製し、主熱交換器で冷却した原料空気を中圧塔、低圧塔及びアルゴン塔で深冷液化分離することによって少なくとも製品アルゴンと中圧製品酸素ガスとを採取する空気液化分離方法において、前記原料空気圧縮機で前記中圧塔に導入可能な中圧に昇圧して前記精製器で精製した中圧原料空気を第1中圧原料空気と第2中圧原料空気とに2分流する工程と、前記第1中圧原料空気を前記主熱交換器で冷却して前記中圧塔の下部に導入する工程と、前記主熱交換器で冷却される前記第1中圧原料空気の一部を中間温度で第3中圧原料空気として分流する工程と、前記第3中圧原料空気を膨張タービンで前記中圧製品酸素ガスの気化前の中圧液化酸素の沸点よりも高い温度でかつ前記低圧塔に導入可能な低圧に膨張させて低圧原料空気とする工程と、前記低圧原料空気を前記主熱交換器で冷却して前記低圧塔の中段上部に導入する工程と、前記第2中圧原料空気を更に昇圧して高圧原料空気とする工程と、前記高圧原料空気を前記主熱交換器で冷却した後に前記中圧塔に導入可能な中圧に減圧して前記中圧塔の下部に導入する工程と、前記中圧塔及び低圧塔での蒸留操作によって低圧塔の底部に濃縮した液化酸素を抜き出して液化酸素ポンプで昇圧して前記中圧液化酸素とする工程と、前記中圧液化酸素を前記主熱交換器で気化させて前記中圧製品酸素ガスとする工程と、前記低圧塔の中段下部から抜き出したガスを前記アルゴン塔で蒸留して前記製品アルゴンとする工程とを含むことを特徴とする空気液化分離方法。
- 原料空気圧縮機で圧縮し、精製器で精製し、主熱交換器で冷却した原料空気を中圧塔、低圧塔及びアルゴン塔で深冷液化分離することによって少なくとも製品アルゴンと中圧製品酸素ガスとを採取する空気液化分離装置において、前記原料空気圧縮機で前記中圧塔に導入可能な中圧に昇圧されて前記精製器で精製した中圧原料空気を第1中圧原料空気、第2中圧原料空気及び第3中圧原料空気に3分流する経路と、前記第1中圧原料空気を前記主熱交換器で冷却して前記中圧塔の下部に導入する経路と、前記第2中圧原料空気を更に昇圧して高圧原料空気とする第2中圧原料空気圧縮機と、前記高圧原料空気を前記主熱交換器で冷却した後に減圧弁で前記中圧塔に導入可能な中圧に減圧して前記中圧塔の下部に導入する経路と、前記第3中圧原料空気を更に昇圧した後に前記主熱交換器で中間温度に冷却してから前記中圧製品酸素ガスの気化前の中圧液化酸素の沸点よりも高い温度でかつ前記低圧塔に導入可能な低圧に膨張させて低圧原料空気とする膨張タービンと、前記低圧原料空気を前記主熱交換器で冷却して前記低圧塔の中段上部に導入する経路と、前記中圧塔及び低圧塔での蒸留操作によって低圧塔の底部に濃縮した液化酸素を抜き出して昇圧することにより前記中圧液化酸素とする液化酸素ポンプと、前記中圧液化酸素を前記主熱交換器で気化させて前記中圧製品酸素ガスとする経路と、前記低圧塔の中段下部から抜き出したガスを蒸留して前記製品アルゴンとする前記アルゴン塔とを備えていることを特徴とする空気液化分離装置。
- 原料空気圧縮機で圧縮し、精製器で精製し、主熱交換器で冷却した原料空気を中圧塔、低圧塔及びアルゴン塔で深冷液化分離することによって少なくとも製品アルゴンと中圧製品酸素ガスとを採取する空気液化分離装置において、前記原料空気圧縮機で前記中圧塔に導入可能な中圧に昇圧されて前記精製器で精製した中圧原料空気を第1中圧原料空気と第2中圧原料空気とに2分流する経路と、前記第1中圧原料空気を前記主熱交換器で冷却して前記中圧塔の下部に導入する経路と、前記主熱交換器で冷却される前記第1中圧原料空気の一部を中間温度で第3中圧原料空気として分流する経路と、前記第3中圧原料空気を前記中圧製品酸素ガスの気化前の中圧液化酸素の沸点よりも高い温度でかつ前記低圧塔に導入可能な低圧に膨張させて低圧原料空気とする膨張タービンと、前記低圧原料空気を前記主熱交換器で冷却して前記低圧塔の中段上部に導入する経路と、前記第2中圧原料空気を更に昇圧して高圧原料空気とする第2中圧原料空気圧縮機と、前記高圧原料空気を前記主熱交換器で冷却した後に減圧弁で前記中圧塔に導入可能な中圧に減圧して前記中圧塔の下部に導入する経路と、前記中圧塔及び低圧塔での蒸留操作によって低圧塔の底部に濃縮した液化酸素を抜き出して昇圧することにより前記中圧液化酸素とする液化酸素ポンプと、前記中圧液化酸素を前記主熱交換器で気化させて前記中圧製品酸素ガスとする経路と、前記低圧塔の中段下部から抜き出したガスを蒸留して前記製品アルゴンとする前記アルゴン塔とを備えていることを特徴とする空気液化分離装置。
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US4024A (en) * | 1845-05-01 | Cutting and crushing corn-fodder | ||
GB9008752D0 (en) * | 1990-04-18 | 1990-06-13 | Boc Group Plc | Air separation |
US5228296A (en) * | 1992-02-27 | 1993-07-20 | Praxair Technology, Inc. | Cryogenic rectification system with argon heat pump |
JPH07133982A (ja) * | 1993-11-09 | 1995-05-23 | Nippon Sanso Kk | 高純度アルゴンの製造方法及び装置 |
FR2716816B1 (fr) * | 1994-03-02 | 1996-05-03 | Air Liquide | Procédé de redémarrage d'une colonne auxiliaire de séparation argon/oxygène par distillation, et installation correspondante. |
US6112550A (en) * | 1998-12-30 | 2000-09-05 | Praxair Technology, Inc. | Cryogenic rectification system and hybrid refrigeration generation |
US6318120B1 (en) * | 2000-08-11 | 2001-11-20 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Cryogenic distillation system for air separation |
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