JP6557763B1 - Air separation device - Google Patents

Air separation device Download PDF

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JP6557763B1
JP6557763B1 JP2018150435A JP2018150435A JP6557763B1 JP 6557763 B1 JP6557763 B1 JP 6557763B1 JP 2018150435 A JP2018150435 A JP 2018150435A JP 2018150435 A JP2018150435 A JP 2018150435A JP 6557763 B1 JP6557763 B1 JP 6557763B1
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column
rectification column
rectification
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JP2020026898A (en
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献児 廣瀬
献児 廣瀬
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レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード
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Priority to JP2018150435A priority Critical patent/JP6557763B1/en
Priority to CN201910640688.2A priority patent/CN110822812B/en
Priority to TW108125811A priority patent/TWI797361B/en
Priority to SG10201906856VA priority patent/SG10201906856VA/en
Priority to KR1020190091118A priority patent/KR20200018261A/en
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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
    • F25J3/04721—Producing pure argon, e.g. recovered from a crude argon 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
    • 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
    • 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
    • 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
    • F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
    • F25J3/04727—Producing pure argon, e.g. recovered from a crude argon column using an auxiliary pure argon column for nitrogen rejection
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04878—Side by side arrangement of multiple vessels in a main column system, wherein the vessels are normally mounted one upon the other or forming different sections of the same 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
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04884—Arrangement of reboiler-condensers
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/0489—Modularity and arrangement of parts of the air fractionation unit, in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/58—Argon
    • 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
    • F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being 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
    • 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)
  • Separation By Low-Temperature Treatments (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

【課題】従来の空気分離装置と比較して製品製造効率を低下させることなく、設置面積を大きくすることなく、かつ低圧精留塔を分割することなく、高圧精留塔の頂部に設置される凝縮器に係る高さ分を低くすることができる、空気分離装置を提供する。【解決手段】空気分離装置１は、その塔頂部１１３の上方から離された位置にある第一凝縮器１２１を備える第一精留塔１１と、第一精留塔１１よりも低圧の精留塔であって、第一精留塔１１に隣接配置される第二精留塔２１と、第一精留塔１１の塔頂部１１３の上方に配置される、少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部とを備える。【選択図】図１Ａ[PROBLEMS] To install at the top of a high-pressure rectification column without lowering the product production efficiency as compared with a conventional air separation device, without increasing the installation area, and without dividing the low-pressure rectification column. An air separation device capable of reducing the height of a condenser is provided. An air separation apparatus (1) includes a first rectification column (11) including a first condenser (121) located at a position separated from above a column top (113), and a rectification unit having a lower pressure than the first rectification column (11). A second rectifying column 21 disposed adjacent to the first rectifying column 11 and a part of at least a crude argon rectifying column disposed above the top 113 of the first rectifying column 11. Or the entire crude argon rectification column. [Selection] Figure 1A

Description

本発明は、空気分離装置、特に設置面積及び高さを抑えることができる建造構成に関する。   The present invention relates to an air separation device, and more particularly to a construction configuration capable of suppressing an installation area and a height.

特許文献１は、酸素、窒素およびアルゴンなどの製品を製造する空気分離装置を開示する。空気分離装置は、これらの製品を効率的に製造するために、高圧精留塔、低圧精留塔、粗アルゴン精留塔など複数の精留塔から構成される。これらの精留塔は、建造の観点から様々な配置構成をとりうるが、設置面積および設置高さをそれぞれ小さくし建造の最適化を図ることが望まれる。   Patent Document 1 discloses an air separation device that manufactures products such as oxygen, nitrogen, and argon. In order to efficiently produce these products, the air separation device is composed of a plurality of rectification columns such as a high pressure rectification column, a low pressure rectification column, and a crude argon rectification column. These rectifying towers can have various arrangements from the viewpoint of construction, but it is desired to optimize the construction by reducing the installation area and the installation height.

特許文献２は、高圧精留塔の上部に粗アルゴン精留塔を設置することを開示する。しかしながら、この方法では高圧精留塔頂部に設置される凝縮器が粗アルゴン精留塔との中間部に設置する必要があるので、全体的な設置高さが非常に高くなる。   Patent Document 2 discloses that a crude argon rectification column is installed at the top of a high-pressure rectification column. However, in this method, since the condenser installed at the top of the high pressure rectification column needs to be installed in the middle of the crude argon rectification column, the overall installation height becomes very high.

特許文献３は、粗アルゴン精留塔を低圧精留塔の上方または側方に設置することを開示する。しかしながら、上方設置では高さが非常に高くなり、側方設置では設置面積が大きくなってしまう。また、低圧精留塔を分割する場合には、高圧容器のエンドプレートやディストリビュータの増加、複雑な設置が必要となり、設備コストが高くなる。   Patent Document 3 discloses that a crude argon rectification column is installed above or on the side of a low-pressure rectification column. However, the height is very high in the upper installation, and the installation area is increased in the lateral installation. Further, when dividing the low-pressure rectification column, the end plate and distributor of the high-pressure vessel are increased and complicated installation is required, resulting in an increase in equipment cost.

仏国特許第２９６４４５１号公報French Patent No. 2964451 国際特許公開第８８／０１０３７公報International Patent Publication No. 88/01037 特許第６２５７６５６号公報Japanese Patent No. 6257656

上記実情に鑑みて、本発明は、従来の空気分離装置と比較して製品製造効率を低下させることなく、設置面積を大きくすることなく、かつ低圧精留塔を分割することなく、高圧精留塔の頂部に設置される凝縮器に係る高さ分を低くすることができる、空気分離装置を提供することを目的とする。   In view of the above circumstances, the present invention provides high-pressure rectification without reducing product production efficiency, without increasing the installation area, and without dividing the low-pressure rectification column as compared with conventional air separation devices. An object of the present invention is to provide an air separation device that can reduce the height of the condenser installed at the top of the tower.

本発明の空気分離装置は、
その塔頂部（１１３）の上方から離された位置にある第一凝縮器（１２１、１２２）を備える第一精留塔（１１）と、
前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置される第二精留塔（２１）と、
前記第一精留塔（１１）の塔頂部（１１３）の上方に配置される、少なくとも粗アルゴン精留塔の一部（３１）または粗アルゴン精留塔の全部（３０）と、を備える。 The air separation device of the present invention comprises:
A first rectification column (11) comprising a first condenser (121, 122) at a position separated from above the tower top (113);
A rectifying column having a lower pressure than the first rectifying column (11), the second rectifying column (21) disposed adjacent to the first rectifying column (11);
And at least a part (31) of the crude argon rectification tower or the whole (30) of the crude argon rectification tower, which is disposed above the top (113) of the first rectification tower (11).

上記発明において、
前記粗アルゴン精留塔の一部が前記塔頂部（１１３）の上方に配置される場合に、
前記粗アルゴン精留塔は、前記塔頂部（１１３）の上方に配置される下部精留塔（３１）と、前記第二精留塔（２１）および／または前記第一精留塔（１１）に隣接配置され、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備える上部精留塔（３２）とを有してもよい。
上記発明において、
前記粗アルゴン精留塔の全部が前記塔頂部（１１３）の上方に配置される場合に、前記粗アルゴン精留塔は、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備え、前記塔頂部（１１３）の上方にのみ配置されてもよい。 In the above invention,
When a portion of the crude argon rectification column is disposed above the column top (113),
The crude argon rectification column includes a lower rectification column (31) disposed above the tower top (113), the second rectification column (21) and / or the first rectification column (11). And an upper rectification column (32) provided with a second condenser (324) in or above the column top (323).
In the above invention,
When all of the crude argon rectification tower is disposed above the tower top (113), the crude argon rectification tower places the second condenser (324) in or above the tower top (323). It may be arranged only above the tower top (113).

上記発明において、
前記第一凝縮器（１２１）は、前記塔頂部（１１３）の斜め上方に配置されてもよい。 In the above invention,
The first condenser (121) may be disposed obliquely above the tower top (113).

上記発明において、
前記第一凝縮器（１２２）は、前記第二精留塔（２１）の下部あるいは底部（２１１）に配置されてもよい。 In the above invention,
The first condenser (122) may be disposed at a lower portion or a bottom portion (211) of the second rectifying column (21).

上記発明において、
前記第一精留塔（１１）は、前記第一凝縮器（１２１）を含みあるいは含まず、第一コールドボックス（１０ａ）内に配置されてもよい。 In the above invention,
The first rectification column (11) may or may not be included in the first cold box ( 10a ), with or without the first condenser ( 121 ).

上記発明において、
前記第一精留塔（１１）および前記少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部が、第一コールドボックス（１０）内に配置されてもよく、または、
前記第一精留塔（１１）が、第一コールドボックス（１０）内に配置され、かつ前記少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部が、前記第一コールドボックス（１０）とは別のコールドボックス内に配置されてもよい。 In the above invention,
The first rectification column (11) and at least a part of the crude argon rectification column or the whole of the crude argon rectification column may be disposed in the first cold box (10), or
The first rectifying column (11) is disposed in the first cold box (10), and at least a part of the crude argon rectifying column or the entire crude argon rectifying column is disposed in the first cold box ( It may be arranged in a cold box different from 10).

上記発明において、
前記第一精留塔（１１）、前記第二精留塔（２１）、前記粗アルゴン精留塔の内一つまたは二つ以上に隣接配置される、純アルゴン精留塔を、さらに備えていてもよい。 In the above invention,
A pure argon rectification column, which is arranged adjacent to one or more of the first rectification column (11), the second rectification column (21) and the crude argon rectification column. May be.

上記発明によれば、従来の空気分離装置と比較して製品製造効率を低下させることなく、設置面積を大きくすることなく、かつ低圧精留塔を分割することなく、高圧精留塔の頂部に設置される凝縮器に係る高さ分を低くすることができる。この削減高さは、例えば５〜１０ｍとなることがあり、高純度ガスを製造するような非常に高い精留塔の設置の際に、大規模なクレーンの利用などで発生する設置コストを大幅に削減できる。   According to the above invention, the product manufacturing efficiency is not reduced as compared with the conventional air separation device, the installation area is not increased, and the low pressure rectification column is not divided, and the top of the high pressure rectification column is obtained. The height of the installed condenser can be reduced. This reduced height may be, for example, 5 to 10 m, greatly increasing the installation cost caused by the use of a large crane when installing a very high rectifying tower that produces high-purity gas. Can be reduced.

本発明の第一実施形態の空気分離装置（１）は、
第一コールドボックス（１０ａ）内に配置され、かつ第一凝縮器（１２１）をその塔頂部（１１３）の斜め上方に備える第一精留塔（１１）と、
第二コールドボックス（２０）内に配置され、かつ前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置される第二精留塔（２１）と、
第一コールドボックス（１０ａ）内または第三コールドボックス（３０ａ）内に配置され、かつ前記第一精留塔（１１）の塔頂部（１１３）の上方（好ましくは垂直上方）に設置される下部精留塔（３１）と、第四コールドボックス（３０ｂ）内に配置され、かつ前記第二精留塔（２１）および／または前記第一精留塔（１１）に隣接配置され、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備える上部精留塔（３２）とを有する粗アルゴン精留塔（３１、３２）と、を備える。
第一実施形態の空気分離装置（１）は、前記第四コールドボックス（３０ｂ）内に配置され、かつ前記上部精留塔（３２）に隣接配置される純アルゴン精留塔（３６）を、さらに備えていてもよい。
第一実施形態の空気分離装置（１）は、前記第一凝縮器（１２１）から前記第二精留塔（２１）の底部（２１１）へ第一酸素富化ガスが送られる第一酸素富化ガス送りライン（Ｌ１）と、
前記第二精留塔（２１）の底部（２１１）から前記第一凝縮器（１２１）へ第一酸素富化液が第一液送ポンプ（５）で送られる第一酸素富化液送りライン（Ｌ２）と、
前記第二精留塔（２１）のカラム中間部（２１３）（あるいは中間よりも下方のカラム（２１２）位置）から前記下部精留塔（３１）の底部（３１１）へ第二酸素富化ガスを送る第二酸素富化ガス送りライン（Ｌ３）と、
前記下部精留塔（３１）の底部（３１１）から前記第二精留塔（２１）のカラム中間部（２１３）（あるいは中間よりも下方のカラム（２１２）位置）へ第二酸素富化液を送る第二酸素富化液送りライン（Ｌ４）と、
前記下部精留塔（３１）の塔頂部（３１３）から前記上部精留塔（３２）の底部（３２１）へ第一アルゴン富化ガスが送られる第一アルゴン富化ガス送りライン（Ｌ５）と、
前記上部精留塔（３２）の底部（３２１）から前記下部精留塔（３１）の塔頂部（３１３）へ第一アルゴン富化液が第二液送ポンプ（６）で送られる第一アルゴン富化液送りライン（Ｌ６）と、をさらに備えていてもよい。 The air separation device (1) of the first embodiment of the present invention is:
A first rectifying column (11) disposed in the first cold box ( 10a ) and provided with a first condenser (121) obliquely above the top (113) of the column,
A second rectification column disposed in the second cold box (20) and having a lower pressure than the first rectification column (11), and disposed adjacent to the first rectification column (11). Toru tower (21),
A lower part disposed in the first cold box ( 10a ) or the third cold box (30a) and installed above (preferably vertically above) the top (113) of the first rectifying column (11). A rectifying column (31) and a fourth condensing column (30b) and adjacent to the second rectifying column (21) and / or the first rectifying column (11); And a crude argon rectification column (31, 32) having an upper rectification column (32) provided with a vessel (324) in or above the column top (323).
The air separation device (1) of the first embodiment includes a pure argon rectification column (36) disposed in the fourth cold box (30b) and disposed adjacent to the upper rectification column (32). Furthermore, you may provide.
The air separation device (1) of the first embodiment includes a first oxygen enriched gas in which a first oxygen enriched gas is sent from the first condenser (121) to the bottom (211) of the second rectifying column (21). Chemical gas feed line (L1),
A first oxygen-enriched liquid feed line through which a first oxygen-enriched liquid is fed from the bottom (211) of the second rectification tower (21) to the first condenser (121) by a first liquid feed pump (5). (L2),
The second oxygen-enriched gas from the column middle part (213) of the second rectification column (21) (or the column (212) position below the middle) to the bottom (311) of the lower rectification column (31) A second oxygen-enriched gas feed line (L3) for sending
From the bottom (311) of the lower rectification column (31) to the column intermediate part (213) of the second rectification column (21) (or the column (212) position below the middle), the second oxygen-enriched liquid A second oxygen-enriched liquid feed line (L4)
A first argon-enriched gas feed line (L5) through which a first argon-enriched gas is sent from the top (313) of the lower rectifying column (31) to the bottom (321) of the upper rectifying column (32); ,
The first argon enriched liquid is sent from the bottom part (321) of the upper rectifying tower (32) to the top part (313) of the lower rectifying tower (31) by the second liquid feed pump (6). And an enriched liquid feed line (L6).

第一実施形態の空気分離装置（１）によれば、前記下部精留塔（３１）の底部（３１１）は、前記第二精留塔（２１）のカラム中間部（２１３）よりも高い位置となるように構成する。これにより、ポンプを用いずに第二酸素富化液をその高低差を利用して送ることができる。
また、第一精留塔（高圧塔）、第二精留塔（低圧塔）と、空間的に分離された１つ以上の部分（少なくともそれぞれにカラムを含む、上部精留塔、下部精留塔など）から構成された粗アルゴン精留塔を有し、第二精留塔（低圧塔）は第一精留塔（高圧塔）の少なくとも高さ方向の部分的な位置で隣接配置され、粗アルゴン精留塔の下部精留塔（底部）は少なくとも第一精留塔（高圧塔）の上方に配置される。これによって、空気分離装置の高さを低くできる。
また、第一精留塔（高圧塔）の斜め上方に凝縮器を設置する場合は、つまり、第一精留塔の塔頂部に設置される第一凝縮器に係る高さ分を低くすることができる。
また、例えば第二精留塔（低圧塔）や原料空気を冷却するための主熱交換器（不図示）を収めた第五コールドボックス（５０）の一部を支持サポートとして使用することによって、新たな支持脚を接地することがなく、第一精留塔（高圧塔）の斜め上方に第一凝縮器を設置することができる。
また、粗アルゴン精留塔の下部精留塔の底部から第二精留部（低圧塔）の中間部に酸素富化液体が供給されるラインと、第二精留部（低圧塔）の中間部から粗アルゴン精留塔の下部精留塔の下部に酸素富化ガスが供給されるラインが設けられる。つまり、粗アルゴン精留塔の下部精留塔が第一精留塔（高圧塔）の上部に設置されることにより、第二精留塔（低圧塔）の返送点に対して液ヘッドで液返送することが可能となり、特許文献３の構成におけるポンプで２分割された低圧塔下部に返送するような複雑で高価な工程を必要としなくて済む。
また、第一凝縮器（１２１）は、第一精留塔（高圧塔）の頂部ガスを、第二精留塔（低圧塔）の底部液を冷熱源として使用することで凝縮するように構成される。第二精留塔（低圧塔）の底部液は、例えばポンプ（５）によって第二精留塔（低圧塔）の底部（下部）から第一凝縮器（１２１）に送られる。 According to the air separation device (1) of the first embodiment, the bottom (311) of the lower rectifying column (31) is positioned higher than the column intermediate portion (213) of the second rectifying column (21). To be configured. Thereby, a 2nd oxygen enrichment liquid can be sent using the height difference, without using a pump.
Also, a first rectification column (high pressure column), a second rectification column (low pressure column), and one or more spatially separated parts (at least a column in each of an upper rectification column and a lower rectification column The second rectification column (low pressure column) is arranged adjacent to at least a partial position in the height direction of the first rectification column (high pressure column), The lower rectification column (bottom) of the crude argon rectification column is disposed at least above the first rectification column (high pressure column). Thereby, the height of the air separation device can be lowered.
Moreover, when installing a condenser diagonally above the first rectification tower (high pressure tower), that is, to reduce the height of the first condenser installed at the top of the first rectification tower. Can do.
Further, for example, by using a part of the fifth cold box (50) containing the second rectification column (low pressure column) and the main heat exchanger (not shown) for cooling the raw air as a support support, The first condenser can be installed obliquely above the first rectification column (high pressure column) without grounding a new support leg.
In addition, a line in which the oxygen-enriched liquid is supplied from the bottom of the lower rectification column of the crude argon rectification column to the middle of the second rectification unit (low pressure column), and the middle of the second rectification unit (low pressure column) A line through which oxygen-enriched gas is supplied is provided at the lower part of the lower rectifying column of the crude argon rectifying column. In other words, the lower rectification column of the crude argon rectification column is installed at the upper part of the first rectification column (high pressure column), so that the liquid head is used for the return point of the second rectification column (low pressure column). It becomes possible to return it, and it is not necessary to require a complicated and expensive process of returning to the lower part of the low-pressure tower divided into two by the pump in the configuration of Patent Document 3.
The first condenser (121) is configured to condense the top gas of the first rectification column (high pressure column) by using the bottom liquid of the second rectification column (low pressure column) as a cold heat source. Is done. The bottom liquid of the second rectification column (low pressure column) is sent from the bottom (lower part) of the second rectification column (low pressure column) to the first condenser ( 121 ) by, for example, a pump (5).

本発明の第二実施形態の空気分離装置（１）は、
第一コールドボックス（１０ａ）内に配置され、かつ第一凝縮器（１２１）をその塔頂部（１１３）の斜め上方に備える第一精留塔（１１）と、
第二コールドボックス（２０）内に配置され、かつ前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置される第二精留塔（２１）と、
第一コールドボックス（１０ａ）内または第三コールドボックス内に配置され、第二凝縮器（３０４）をその塔頂部（３０３）内あるいはその上方に備える粗アルゴン精留塔（３０）と、を備える。
第二実施形態の空気分離装置（１）は、粗アルゴン精留塔（３０）に隣接配置される純アルゴン精留塔を、さらに備えていてもよい。
第二実施形態の空気分離装置（１）は、前記第一凝縮器（１２１）から前記第二精留塔（２１）の底部（２１１）へ第一酸素富化ガスが送られる第一酸素富化ガス送りライン（Ｌ１）と、
前記第二精留塔（２１）の底部（２１１）から前記第一凝縮器（１２１）へ第一酸素富化液が第一液送ポンプ（５）で送られる第一酸素富化液送りライン（Ｌ２）と、
前記第二精留塔（２１）のカラム中間部（２１３）（あるいは中間よりも下方のカラム（２１２）位置）から前記粗アルゴン精留塔（３０）の底部（３０１）へ第二酸素富化ガスを送る第二酸素富化ガス送りライン（Ｌ３）と、
前記粗アルゴン精留塔（３０）の底部（３０１）から前記第二精留塔（２１）のカラム中間部（２１３）（あるいは中間よりも下方のカラム（２１２）位置）へ第二酸素富化液を送る第二酸素富化液送りライン（Ｌ４）と、をさらに備えていてもよい。
第三実施形態では、粗アルゴン精留塔が分割されておらず、第一精留塔の上方にそのまま配置されているので、高さ方向のサイズが大きくなるが設置面積は小さくできる。 The air separation device (1) of the second embodiment of the present invention is
A first rectifying column (11) disposed in the first cold box ( 10a ) and provided with a first condenser (121) obliquely above the top (113) of the column,
A second rectification column disposed in the second cold box (20) and having a lower pressure than the first rectification column (11), and disposed adjacent to the first rectification column (11). Toru tower (21),
A crude argon rectification column (30) disposed in the first cold box ( 10a ) or in the third cold box and having a second condenser (304) in or above the top (303) of the column. .
The air separation device (1) of the second embodiment may further include a pure argon rectification column disposed adjacent to the crude argon rectification column (30).
The air separation device (1) of the second embodiment includes a first oxygen enriched gas in which a first oxygen enriched gas is sent from the first condenser (121) to the bottom (211) of the second rectifying column (21). Chemical gas feed line (L1),
A first oxygen-enriched liquid feed line through which a first oxygen-enriched liquid is fed from the bottom (211) of the second rectification tower (21) to the first condenser (121) by a first liquid feed pump (5). (L2),
Second oxygen enrichment from the middle column portion (213) of the second rectification column (21) (or the position of the column (212) below the middle) to the bottom portion (301) of the crude argon rectification column (30). A second oxygen-enriched gas feed line (L3) for sending gas;
Second oxygen enrichment from the bottom (301) of the crude argon rectification column (30) to the column intermediate part (213) of the second rectification column (21) (or the column (212) position below the middle). And a second oxygen-enriched liquid feed line (L4) for feeding the liquid.
In the third embodiment, since the crude argon rectification column is not divided and is arranged as it is above the first rectification column, the size in the height direction is increased, but the installation area can be reduced.

第三実施形態の空気分離装置（１）は、
第一コールドボックス（１０ａ）内に配置される第一精留塔（１１）と、
第二コールドボックス（２０）内に配置され、かつ前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置され、かつ前記第一精留塔（１１）の塔頂部（１１３）と配管を介して接続される第一凝縮器（１２２）をその下部あるいは底部（２１１）に備える第二精留塔（２１）と、
第一コールドボックス（１０ａ）内または第三コールドボックス（３０ａ）内に配置され 、かつ前記第一精留塔（１１）の塔頂部（１１３）の上方に設置される下部精留塔（３１）と、第四コールドボックス（３０ｂ）内に配置され、かつ前記第二精留塔（２１）および／または前記第一精留塔（１１）に隣接配置され、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備える上部精留塔（３２）とを有する粗アルゴン精留塔（３１、３２）と 、を備える。
第三実施形態の空気分離装置（１）は、前記第四コールドボックス（３０ｂ）内に配置され、かつ前記上部精留塔（３２）に隣接配置される純アルゴン精留塔（３６）をさらに備えていてもよい。
第三実施形態の空気分離装置（１）は、前記第一精留塔（１１）の塔頂部（１１３）から前記第一凝縮器（１２２）へ第一窒素富化ガスが送られる第一窒素富化ガス送りライン（Ｌ１１）と、
前記第一凝縮器（１２２）から前記第一精留塔（１１）の塔頂部（１１３）へ第一窒素富化液が第一液送ポンプ（５）で送られる第一窒素富化液送りライン（Ｌ２１）と、
前記第二精留塔（２１）のカラム中間部（２１３）から前記下部精留塔（３１）の底部（３１１）へ第一酸素富化ガスを送る第一酸素富化ガス送りライン（Ｌ３）と、
前記下部精留塔（３１）の底部（３１１）から前記第二精留塔（２１）のカラム中間部（２１３）へ第一酸素富化液を送る第一酸素富化液送りライン（Ｌ４）と、
前記下部精留塔（３１）の塔頂部（３１３）から前記上部精留塔（３２）の底部（３２１）へ第一アルゴン富化ガスが送られる第一アルゴン富化ガス送りライン（Ｌ５）と、
前記上部精留塔（３２）の底部（３２１）から前記下部精留塔（３１）の塔頂部（３１３）へ第一アルゴン富化液が第二液送ポンプ（６）で送られる第一アルゴン富化液送りライン（Ｌ６）と、をさらに備えていてもよい。 The air separation device (1) of the third embodiment is
A first rectifying column (11) disposed in the first cold box ( 10a );
A rectifying column disposed in a second cold box (20) and having a lower pressure than the first rectifying column (11), disposed adjacent to the first rectifying column (11), and A second rectifying column (21) provided with a first condenser (122) connected to the top (113) of the rectifying column (11) via a pipe at the lower part or the bottom (211);
Lower rectification tower (31) disposed in the first cold box ( 10a ) or the third cold box (30a) and installed above the top (113) of the first rectification tower (11) And disposed in the fourth cold box (30b) and adjacent to the second rectification column (21) and / or the first rectification column (11), and the second condenser (324) is disposed therein. And a crude argon rectification column (31, 32) having an upper rectification column (32) provided in or above the column top (323).
The air separation device (1) of the third embodiment further includes a pure argon rectification column (36) disposed in the fourth cold box (30b) and disposed adjacent to the upper rectification column (32). You may have.
In the air separation device (1) of the third embodiment, the first nitrogen enriched gas is sent from the top (113) of the first rectification column (11) to the first condenser (122). An enriched gas feed line (L11);
A first nitrogen-enriched liquid feed is sent from the first condenser (122) to the top (113) of the first rectifying column (11) by a first liquid feed pump (5). Line (L21),
The first oxygen-enriched gas feed line (L3) for sending the first oxygen-enriched gas from the column intermediate part (213) of the second rectifying tower (21) to the bottom (311) of the lower rectifying tower (31) When,
First oxygen-enriched liquid feed line (L4) for sending the first oxygen-enriched liquid from the bottom (311) of the lower rectifying tower (31) to the column intermediate part (213) of the second rectifying tower (21) When,
A first argon-enriched gas feed line (L5) through which a first argon-enriched gas is sent from the top (313) of the lower rectifying column (31) to the bottom (321) of the upper rectifying column (32); ,
The first argon enriched liquid is sent from the bottom part (321) of the upper rectifying tower (32) to the top part (313) of the lower rectifying tower (31) by the second liquid feed pump (6). And an enriched liquid feed line (L6).

第三実施形態の空気分離装置（１）によれば、前記下部精留塔（３１）の底部（３１１）は、前記第二精留塔（２１）のカラム中間部（２１３）よりも高い位置となるように構成する。これにより、ポンプを用いずに第二酸素富化液をその高低差を利用して送ることができる。
また、第一精留塔（高圧塔）、第二精留塔（低圧塔）と、空間的に分離された１つ以上の部分（少なくともそれぞれにカラムを含む、上部精留塔、下部精留塔など）から構成された粗アルゴン精留塔を有し、第二精留塔（低圧塔）は第一精留塔（高圧塔）の少なくとも高さ方向の部分的な位置で隣接配置され、粗アルゴン精留塔の下部精留塔（底部）は少なくとも第一精留塔（高圧塔）の上方に配置される。これによって、空気分離装置の高さを低くできる。
また、第一凝縮器（１２２）は第二精留塔（２１）の下部に設置される。つまり、第一精留塔の塔頂部に設置される第一凝縮器に係る高さ分を低くすることができる。
第一凝縮器（１２２）は、第一精留塔（１１）の塔頂部ガスを、第二精留塔（２１）の底部液を冷熱源として使用することで凝縮するように構成される。
第一凝縮器（１２２）で液化された第一精留塔（１１）の塔頂部ガス液は、例えば、ポンプ（５）によって第一精留塔（１１）の塔頂部（１１３）に還流液として送られる。 According to the air separation device (1) of the third embodiment, the bottom (311) of the lower rectification column (31) is positioned higher than the column intermediate part (213) of the second rectification column (21). To be configured. Thereby, a 2nd oxygen enrichment liquid can be sent using the height difference, without using a pump.
Also, a first rectification column (high pressure column), a second rectification column (low pressure column), and one or more spatially separated parts (at least a column in each of an upper rectification column and a lower rectification column The second rectification column (low pressure column) is arranged adjacent to at least a partial position in the height direction of the first rectification column (high pressure column), The lower rectification column (bottom) of the crude argon rectification column is disposed at least above the first rectification column (high pressure column). Thereby, the height of the air separation device can be lowered.
The first condenser (122) is installed in the lower part of the second rectification column (21). That is, the height of the first condenser installed at the top of the first rectifying tower can be reduced.
The first condenser (122) is configured to condense the top gas of the first rectifying column (11) by using the bottom liquid of the second rectifying column (21) as a cold heat source.
The gas liquid at the top of the first rectification column (11) liquefied by the first condenser (122) is, for example, returned to the column top (113) of the first rectification column (11) by the pump (5). Sent as.

本発明の第四実施形態の空気分離装置（１）は、
第一コールドボックス（１０ａ）内に配置される第一精留塔（１１）と、
第二コールドボックス（２０）内に配置され、かつ前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置され、かつ前記第一精留塔（１１）の塔頂部（１１３）と配管を介して接続される第一凝縮器（１２２）をその下部あるいは底部（２１１）に備える第二精留塔（２１）と、
第一コールドボックス（１０ａ）内または第三コールドボックス内に配置され 、第二凝縮器（３０４）をその塔頂部（３０３）内あるいはその上方に備える粗アルゴン精留塔（３０）と、を備える。
第四実施形態の空気分離装置（１）は、粗アルゴン精留塔（３０）に隣接配置される純アルゴン精留塔を、さらに備えていてもよい。
第四実施形態の空気分離装置（１）は、前記第一精留塔（１１）の塔頂部（１１３）から前記第一凝縮器（１２２）へ第一窒素富化ガスが送られる第一窒素富化ガス送りライン（Ｌ１１）と、
前記第一凝縮器（１２２）から前記第一精留塔（１１）の塔頂部（１１３）へ第一窒素富化液が第一液送ポンプ（５）で送られる第一窒素富化液送りライン（Ｌ２１）と、
前記第二精留塔（２１）のカラム中間部（２１３）から前記下部精留塔（３１）の底部（３１１）へ第一酸素富化ガスを送る第一酸素富化ガス送りライン（Ｌ３）と、
前記下部精留塔（３１）の底部（３１１）から前記第二精留塔（２１）のカラム中間部（２１３）へ第一酸素富化液を送る第一酸素富化液送りライン（Ｌ４）と、をさらに備えていてもよい。
第四実施形態では、粗アルゴン精留塔が分割されておらず、第一精留塔の上方にそのまま配置されているので、高さ方向のサイズが大きくなるが設置面積は小さくできる。 The air separation device (1) of the fourth embodiment of the present invention is
A first rectifying column (11) disposed in the first cold box ( 10a );
A rectifying column disposed in a second cold box (20) and having a lower pressure than the first rectifying column (11), disposed adjacent to the first rectifying column (11), and A second rectifying column (21) provided with a first condenser (122) connected to the top (113) of the rectifying column (11) via a pipe at the lower part or the bottom (211);
A crude argon rectification column (30) disposed in the first cold box ( 10a ) or in the third cold box and having a second condenser (304) in or above its top (303). .
The air separation device (1) of the fourth embodiment may further include a pure argon rectification column disposed adjacent to the crude argon rectification column (30).
In the air separation device (1) of the fourth embodiment, the first nitrogen enriched gas is sent from the top (113) of the first rectifying column (11) to the first condenser (122). An enriched gas feed line (L11);
A first nitrogen-enriched liquid feed is sent from the first condenser (122) to the top (113) of the first rectifying column (11) by a first liquid feed pump (5). Line (L21),
The first oxygen-enriched gas feed line (L3) for sending the first oxygen-enriched gas from the column intermediate part (213) of the second rectifying tower (21) to the bottom (311) of the lower rectifying tower (31) When,
First oxygen-enriched liquid feed line (L4) for sending the first oxygen-enriched liquid from the bottom (311) of the lower rectifying tower (31) to the column intermediate part (213) of the second rectifying tower (21) And may be further provided.
In the fourth embodiment, since the crude argon rectification column is not divided and is arranged as it is above the first rectification column, the size in the height direction is increased, but the installation area can be reduced.

実施形態１の空気分離装置を示す図である。It is a figure which shows the air separation apparatus of Embodiment 1. FIG. 実施形態２の空気分離装置を示す図である。It is a figure which shows the air separation apparatus of Embodiment 2. FIG. 実施形態３の空気分離装置を示す図である。It is a figure which shows the air separation apparatus of Embodiment 3. 実施形態４の空気分離装置を示す図である。It is a figure which shows the air separation apparatus of Embodiment 4.

以下に本発明のいくつかの実施形態について説明する。以下に説明する実施形態は、本発明の一例を説明するものである。本発明は以下の実施形態になんら限定されるものではなく、本発明の要旨を変更しない範囲において実施される各種の変形形態も含む。なお、以下で説明される構成の全てが本発明の必須の構成であるとは限らない。   Several embodiments of the present invention will be described below. Embodiment described below demonstrates an example of this invention. The present invention is not limited to the following embodiments, and includes various modified embodiments that are implemented within a range that does not change the gist of the present invention. Note that not all of the configurations described below are essential configurations of the present invention.

（実施形態１）
実施形態１の空気分離装置１について図１Ａを用いて説明する。
空気分離装置１は、第一精留塔（高圧塔）、第二精留塔（低圧塔）と、空間的に分離された１つ以上の部分（少なくともそれぞれにカラムを含む、上部精留塔、下部精留塔など）から構成された粗アルゴン精留塔を有する。第二精留塔（低圧塔）は第一精留塔（高圧塔）の少なくとも高さ方向の部分的な位置で隣接配置され、粗アルゴン精留塔の下部精留塔（底部）は少なくとも第一精留塔（高圧塔）の上方に配置される。これによって、空気分離装置の高さを低くできる。 (Embodiment 1)
The air separation apparatus 1 of Embodiment 1 is demonstrated using FIG. 1A.
The air separation apparatus 1 includes a first rectification column (high pressure column), a second rectification column (low pressure column), and one or more parts (at least each including a column) that are spatially separated. And a crude rectification column composed of a lower rectification column and the like. The second rectification column (low pressure column) is disposed adjacent to at least a partial position in the height direction of the first rectification column (high pressure column), and the lower rectification column (bottom) of the crude argon rectification column is at least the first rectification column (low pressure column). It is arranged above one rectifying column (high pressure column). Thereby, the height of the air separation device can be lowered.

第一精留塔１１は、第一コールドボックス１０ａ内に配置され、かつ第一凝縮器１２１をその塔頂部１１３の斜め上方に備える（設置時に鉛直方向で重ならないように配置される）。
第一凝縮器１２１は、第一サブコールドボックス１０ｂに収納される。第一凝縮器１２１は、第二精留塔２１や原料空気を冷却するための主熱交換器を収納した第五コールドボックス５０の一部を支持サポートとして使用されて設置される。第一凝縮器１２１の高さが、塔頂部１１３より高い位置で、ポンプを用いずに液流れするように構成される。
第二精留塔２１は、第二コールドボックス２０内に配置され、かつ第一精留塔１１よりも低圧の精留塔であって、第一精留塔１１に隣接配置される。 The first rectifying column 11 is disposed in the first cold box 10a and includes the first condenser 121 obliquely above the tower top 113 (disposed so as not to overlap in the vertical direction when installed).
The first condenser 121 is accommodated in the first sub cold box 10b. The first condenser 121 is installed using a part of the fifth cold box 50 that houses the second rectification tower 21 and the main heat exchanger for cooling the raw air as a support support. The first condenser 121 is configured to flow at a position higher than the tower top 113 without using a pump.
The second rectifying column 21 is disposed in the second cold box 20 and is a rectifying column having a pressure lower than that of the first rectifying column 11 and is disposed adjacent to the first rectifying column 11.

粗アルゴン精留塔は、空間的に分離された下部精留塔３１と上部精留塔３２とで構成される。
下部精留塔３１は、第三コールドボックス３０ａ内に配置され、かつ第一精留塔１１の塔頂部１１３の垂直上方に設置される。なお、別実施形態として、下部精留塔３１は、第一コールドボックス１０ａ内に配置されてもよい。
上部精留塔３２は、第四コールドボックス３０ｂ内に配置され、かつ第二精留塔２１に隣接配置され、第二凝縮器３２４をその塔頂部３２３の上方に備える。
純アルゴン精留塔３６は、第四コールドボックス３０ｂ内に配置され、かつ上部精留塔３２に隣接配置される。
なお、純アルゴン精留塔３６は、空気分離装置１で必須ではなく省略されていてもよい。 The crude argon rectification column is composed of a lower rectification column 31 and an upper rectification column 32 which are spatially separated.
The lower rectifying column 31 is disposed in the third cold box 30 a and is installed vertically above the top 113 of the first rectifying column 11. As another embodiment, the lower rectifying column 31 may be disposed in the first cold box 10a.
The upper rectifying column 32 is disposed in the fourth cold box 30 b and adjacent to the second rectifying column 21, and includes a second condenser 324 above the top 323 thereof.
The pure argon rectification column 36 is disposed in the fourth cold box 30 b and is disposed adjacent to the upper rectification column 32.
The pure argon rectification column 36 is not essential in the air separation device 1 and may be omitted.

第一酸素富化ガス送りラインＬ１は、第一凝縮器１２から第二精留塔２１の底部２１１へ第一酸素富化ガスが送られるラインである。第一酸素富化ガス送りラインＬ１は、配管と弁（不図示）で構成される。
第一酸素富化液送りラインＬ２は、第二精留塔２１の底部２１１から第一凝縮器１２へ第一酸素富化液が第一液送ポンプ５で送られるラインである。第一酸素富化液送りラインＬ２は、配管と弁（不図示）で構成される。 The first oxygen-enriched gas feed line L <b> 1 is a line through which the first oxygen-enriched gas is sent from the first condenser 12 to the bottom 211 of the second fractionator 21. The first oxygen-enriched gas feed line L1 includes a pipe and a valve (not shown).
The first oxygen-enriched liquid feed line L <b> 2 is a line through which the first oxygen-enriched liquid is sent from the bottom 211 of the second rectifying column 21 to the first condenser 12 by the first liquid feed pump 5. The first oxygen-enriched liquid feed line L2 includes a pipe and a valve (not shown).

第二酸素富化ガス送りラインＬ３は、第二精留塔２１のカラム中間部２１３から下部精留塔３１の底部３１１へ第二酸素富化ガスを送るラインである。第二酸素富化ガス送りラインＬ３は、配管と弁（不図示）で構成される。
第二酸素富化液送りラインＬ４は、下部精留塔３１の底部３１１から第二精留塔２１のカラム中間部２１３へ第二酸素富化液を送るラインである。第二酸素富化液送りラインＬ４は、配管と弁（不図示）で構成される。
下部精留塔３１の底部３１１は、第二精留塔２１のカラム中間部２１３よりも高い位置であり、ポンプを用いずに第二酸素富化液をその高低差を利用して送る。 The second oxygen-enriched gas feed line L <b> 3 is a line for sending the second oxygen-enriched gas from the column intermediate part 213 of the second rectifying column 21 to the bottom 311 of the lower rectifying tower 31. The second oxygen-enriched gas feed line L3 includes a pipe and a valve (not shown).
The second oxygen-enriched liquid feed line L <b> 4 is a line for sending the second oxygen-enriched liquid from the bottom 311 of the lower rectifying tower 31 to the column intermediate part 213 of the second rectifying tower 21. The second oxygen-enriched liquid feed line L4 includes a pipe and a valve (not shown).
The bottom 311 of the lower rectifying column 31 is at a position higher than the column intermediate portion 213 of the second rectifying column 21, and the second oxygen-enriched liquid is sent using the height difference without using a pump.

第一アルゴン富化ガス送りラインＬ５は、下部精留塔３１の塔頂部３１３から上部精留塔３２の底部３２１へ第一アルゴン富化ガスが送られるラインである。第一アルゴン富化ガス送りラインＬ５は、配管と弁（不図示）で構成される。
第一アルゴン富化液送りラインＬ６は、上部精留塔３２の底部３２１から下部精留塔３１の塔頂部３１３へ第一アルゴン富化液が第二液送ポンプ６で送られるラインである。第一アルゴン富化液送りラインＬ６は、配管と弁（不図示）で構成される。 The first argon-enriched gas feed line L5 is a line through which the first argon-enriched gas is sent from the column top 313 of the lower rectification column 31 to the bottom 321 of the upper rectification column 32. The first argon-enriched gas feed line L5 includes a pipe and a valve (not shown).
The first argon-enriched liquid feed line L <b> 6 is a line through which the first argon-enriched liquid is sent by the second liquid feed pump 6 from the bottom 321 of the upper rectifying tower 32 to the tower top 313 of the lower rectifying tower 31. The first argon-enriched liquid feed line L6 includes a pipe and a valve (not shown).

実施形態１において、図１Ａでは、第二精留塔（低圧塔）や原料空気を冷却するための主熱交換器、原料空気を圧縮する圧縮機、膨張タービンなどが省略されているが、不必要ということではない。本実施形態１（以下の実施形態でも同様である）においてもそれら構成要素も当然に空気分離装置１の構成要素の一部である。   In Embodiment 1, in FIG. 1A, the second rectification column (low pressure column), the main heat exchanger for cooling the raw air, the compressor for compressing the raw air, the expansion turbine, etc. are omitted. It is not necessary. In the first embodiment (the same applies to the following embodiments), these components are naturally part of the components of the air separation device 1.

（実施形態２）
実施形態２の空気分離装置１を図１Ｂを用いて説明する。実施形態１と異なる構成について説明し、同じ構成については説明を省略または簡単にする。
粗アルゴン精留塔３０は、第一コールドボックス１０ａ内に配置され、第二凝縮器３０４をその塔頂部３０３内あるいはその上方に備える。なお、粗アルゴン精留塔３０は、第一コールドボックス１０ａとは別のコールドボックス内に配置されていてもよい。
なお、実施形態２において、純アルゴン精留塔は必須であってもよく省略されていてもよい。
実施形態２では、粗アルゴン精留塔が分割されておらず、第一精留塔の上方にそのまま配置されているので、高さ方向のサイズが大きくなるが設置面積は小さくできる。 (Embodiment 2)
The air separation apparatus 1 of Embodiment 2 is demonstrated using FIG. 1B. A configuration different from that of the first embodiment will be described, and the description of the same configuration will be omitted or simplified.
The crude argon rectification column 30 is disposed in the first cold box 10a , and includes a second condenser 304 in or above the column top 303. The crude argon rectification column 30 may be arranged in a cold box different from the first cold box 10a .
In the second embodiment, the pure argon rectification column may be essential or may be omitted.
In Embodiment 2, since the crude argon rectification column is not divided and is arranged as it is above the first rectification column, the size in the height direction increases, but the installation area can be reduced.

（実施形態３）
実施形態３の空気分離装置１を図２Ａを用いて説明する。
空気分離装置１は、第一精留塔（高圧塔）、第二精留塔（低圧塔）と、空間的に分離された１つ以上の部分（少なくともそれぞれにカラムを含む、上部精留塔、下部精留塔など）から構成された粗アルゴン精留塔を有する。第二精留塔（低圧塔）は第一精留塔（高圧塔）の少なくとも高さ方向の部分的な位置で隣接配置され、粗アルゴン精留塔の下部精留塔（底部）は少なくとも第一精留塔（高圧塔）の上方に配置される。これによって、空気分離装置の高さを低くできる。 (Embodiment 3)
An air separation device 1 according to Embodiment 3 will be described with reference to FIG. 2A.
The air separation apparatus 1 includes a first rectification column (high pressure column), a second rectification column (low pressure column), and one or more parts (at least each including a column) that are spatially separated. And a crude rectification column composed of a lower rectification column and the like. The second rectification column (low pressure column) is disposed adjacent to at least a partial position in the height direction of the first rectification column (high pressure column), and the lower rectification column (bottom) of the crude argon rectification column is at least the first rectification column (low pressure column). It is arranged above one rectifying column (high pressure column). Thereby, the height of the air separation device can be lowered.

第一精留塔１１は、第一コールドボックス１０ａ内に配置される。
第二精留塔２１は、第二コールドボックス２０内に配置され、かつ第一精留塔１１よりも低圧の精留塔であって、第一精留塔１１に隣接配置され、かつ第一精留塔１１の塔頂部１１３と配管を介して接続される第一凝縮器１２２をその底部２１１に備える。 The first rectifying column 11 is disposed in the first cold box 10a .
The second rectification column 21 is disposed in the second cold box 20 and is a rectification column having a lower pressure than the first rectification column 11, is disposed adjacent to the first rectification column 11, and A first condenser 122 connected to the tower top 113 of the rectifying column 11 via a pipe is provided at the bottom 211 thereof.

粗アルゴン精留塔は、第三コールドボックス３０ａ内に配置され、かつ第一精留塔１１の塔頂部１１３の垂直上方に設置される下部精留塔３１と、第四コールドボックス３０ｂ内に配置され、かつ第二精留塔２１に隣接配置され、第二凝縮器３２４をその塔頂部３２３の上方に備える上部精留塔３２とを有する。
純アルゴン精留塔３６は、第四コールドボックス３０ｂ内に配置され、かつ上部精留塔３２に隣接配置される。
なお、純アルゴン精留塔３６は、空気分離装置１で必須ではなく省略されていてもよい。 The crude argon rectification column is disposed in the third cold box 30a, and is disposed in the lower rectification column 31 and the fourth cold box 30b. The lower rectification column 31 is disposed vertically above the top 113 of the first rectification column 11. And an upper rectification column 32 provided adjacent to the second rectification column 21 and provided with a second condenser 324 above the top 323 of the column.
The pure argon rectification column 36 is disposed in the fourth cold box 30 b and is disposed adjacent to the upper rectification column 32.
The pure argon rectification column 36 is not essential in the air separation device 1 and may be omitted.

第一窒素富化ガス送りラインＬ１１は、第一精留塔１１の塔頂部１１３から第一凝縮器１２２へ第一窒素富化ガスが送られるラインである。第一窒素富化ガス送りラインＬ１１は、配管と弁（不図示）で構成される。
第一窒素富化液送りラインＬ２１は、第一凝縮器１２２から第一精留塔１１の塔頂部１１３へ第一窒素富化液が第一液送ポンプ（５）で送られるラインである。第一窒素富化液送りラインＬ２１は、配管と弁（不図示）で構成される。 The first nitrogen-enriched gas feed line L11 is a line through which the first nitrogen-enriched gas is sent from the top 113 of the first rectifying column 11 to the first condenser 122. The first nitrogen-enriched gas feed line L11 is composed of a pipe and a valve (not shown).
The first nitrogen-enriched liquid feed line L21 is a line through which the first nitrogen-enriched liquid is sent from the first condenser 122 to the tower top 113 of the first rectifying column 11 by the first liquid feed pump (5). The first nitrogen-enriched liquid feed line L21 includes a pipe and a valve (not shown).

第一酸素富化ガス送りラインＬ３は、第二精留塔２１のカラム中間部２１３から下部精留塔３１の底部３１１へ第一酸素富化ガスを送るラインである。第一酸素富化ガス送りラインＬ３は、配管と弁（不図示）で構成される。
第一酸素富化液送りラインＬ４は、下部精留塔３１の底部３１１から第二精留塔２１のカラム中間部２１３へ第一酸素富化液を送るラインである。第一酸素富化液送りラインＬ４は、配管と弁（不図示）で構成される。
下部精留塔３１の底部３１１は、第二精留塔２１のカラム中間部２１３よりも高い位置であり、ポンプを用いずに第一酸素富化液をその高低差を利用して送る。 The first oxygen-enriched gas feed line L <b> 3 is a line for sending the first oxygen-enriched gas from the column intermediate part 213 of the second rectifying column 21 to the bottom 311 of the lower rectifying tower 31. The first oxygen-enriched gas feed line L3 includes a pipe and a valve (not shown).
The first oxygen-enriched liquid feed line L4 is a line for sending the first oxygen-enriched liquid from the bottom 311 of the lower rectifying column 31 to the column intermediate part 213 of the second rectifying column 21. The first oxygen-enriched liquid feed line L4 includes a pipe and a valve (not shown).
The bottom part 311 of the lower rectifying column 31 is at a position higher than the column intermediate part 213 of the second rectifying column 21, and the first oxygen-enriched liquid is sent using the height difference without using a pump.

第一アルゴン富化ガス送りラインＬ５は、下部精留塔３１の塔頂部３１３から上部精留塔３２の底部３２１へ第一アルゴン富化ガスが送られるラインである。第一アルゴン富化ガス送りラインＬ５は、配管と弁（不図示）で構成される。
第一アルゴン富化液送りラインＬ６は、上部精留塔３２の底部３２１から下部精留塔３１の塔頂部３１３へ第一アルゴン富化液が第二液送ポンプ６で送られるラインである。第一アルゴン富化液送りラインＬ６は、配管と弁（不図示）で構成される。 The first argon-enriched gas feed line L5 is a line through which the first argon-enriched gas is sent from the column top 313 of the lower rectification column 31 to the bottom 321 of the upper rectification column 32. The first argon-enriched gas feed line L5 includes a pipe and a valve (not shown).
The first argon-enriched liquid feed line L <b> 6 is a line through which the first argon-enriched liquid is sent from the bottom 321 of the upper rectifying tower 32 to the tower top 313 of the lower rectifying tower 31 by the second liquid feed pump 6. The first argon-enriched liquid feed line L6 includes a pipe and a valve (not shown).

実施形態３において、図２Ａでは、第二精留塔（低圧塔）や原料空気を冷却するための主熱交換器、原料空気を圧縮する圧縮機、膨張タービンなどが省略されているが、不必要ということではない。本実施形態３においてもそれら構成要素も当然に空気分離装置１の構成要素の一部である。   In Embodiment 3, in FIG. 2A, the second rectification tower (low pressure tower), the main heat exchanger for cooling the raw air, the compressor for compressing the raw air, the expansion turbine, etc. are omitted. It is not necessary. In the third embodiment, these components are naturally part of the components of the air separation device 1.

（実施形態４）
実施形態４の空気分離装置１を図２Ｂを用いて説明する。実施形態２と異なる構成について説明し、同じ構成については説明を省略または簡単にする。
粗アルゴン精留塔３０は、第一コールドボックス１０ａ内に配置され、第二凝縮器３０４をその塔頂部３０３内あるいはその上方に備える。なお、粗アルゴン精留塔３０は、第一コールドボックス１０ａとは別のコールドボックス内に配置されていてもよい。
なお、実施形態４において、純アルゴン精留塔は必須であってもよく省略されていてもよい。
実施形態４では、粗アルゴン精留塔が分割されておらず、第一精留塔の上方にそのまま配置されているので、高さ方向のサイズが大きくなるが設置面積は小さくできる。 (Embodiment 4)
The air separation apparatus 1 of Embodiment 4 is demonstrated using FIG. 2B. A configuration different from that of the second embodiment will be described, and description of the same configuration will be omitted or simplified.
The crude argon rectification column 30 is disposed in the first cold box 10a , and includes a second condenser 304 in or above the column top 303. The crude argon rectification column 30 may be arranged in a cold box different from the first cold box 10a .
In the fourth embodiment, the pure argon rectification column may be essential or may be omitted.
In Embodiment 4, since the crude argon rectification column is not divided and is arranged as it is above the first rectification column, the size in the height direction is increased, but the installation area can be reduced.

図面の符号の説明Explanation of symbols in the drawings

１ 空気分離装置
１１ 第一精留塔
１２１、１２２ 第一凝縮器
２１ 第二精留塔
３０ 粗アルゴン塔
３１ 下部精留塔
３２ 上部精留塔 DESCRIPTION OF SYMBOLS 1 Air separation apparatus 11 1st fractionator 121,122 1st condenser 21 2nd fractionator 30 Coarse argon tower 31 Lower fractionator 32 Upper fractionator

Claims (5)

その塔頂部（１１３）の斜め上方に配置される第一凝縮器（１２１）を備える第一精留塔（１１）と、
前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置される第二精留塔（２１）と、
前記第一精留塔（１１）の塔頂部（１１３）の上方に配置される、少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部と、を備え、
前記粗アルゴン精留塔の一部が前記塔頂部（１１３）の上方に配置される場合に、
前記粗アルゴン精留塔は、前記塔頂部（１１３）の上方に配置される下部精留塔（３１）と、前記第二精留塔（２１）および／または前記第一精留塔（１１）に隣接配置され、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備える上部精留塔（３２）とを有し、または、
前記粗アルゴン精留塔の全部が前記塔頂部（１１３）の上方に配置される場合に、前記粗アルゴン精留塔は、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備え、前記塔頂部（１１３）の上方にのみ配置される、空気分離装置。 A first rectifying column (11) comprising a first condenser ( 121 ) disposed obliquely above the tower top (113);
A rectifying column having a lower pressure than the first rectifying column (11), the second rectifying column (21) disposed adjacent to the first rectifying column (11);
At least part of the crude argon rectification column or all of the crude argon rectification column, which is disposed above the top (113) of the first rectification column (11),
When a portion of the crude argon rectification column is disposed above the column top (113),
The crude argon rectification column includes a lower rectification column (31) disposed above the tower top (113), the second rectification column (21) and / or the first rectification column (11). And an upper rectifying column (32) with a second condenser (324) in or above its top (323), or
When all of the crude argon rectification tower is disposed above the tower top (113), the crude argon rectification tower places the second condenser (324) in or above the tower top (323). The air separation device is arranged only above the tower top (113). 第一精留塔（１１）と、
前記第一精留塔（１１）よりも低圧の精留塔であって、前記第一精留塔（１１）に隣接配置される第二精留塔（２１）と、
前記第二精留塔（２１）の下部あるいは底部（２１１）に配置される第一凝縮器（１２２）と、
前記第一精留塔（１１）の塔頂部（１１３）の上方に配置される、少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部と、を備え、
前記粗アルゴン精留塔の一部が前記塔頂部（１１３）の上方に配置される場合に、
前記粗アルゴン精留塔は、前記塔頂部（１１３）の上方に配置される下部精留塔（３１）と、前記第二精留塔（２１）および／または前記第一精留塔（１１）に隣接配置され、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備える上部精留塔（３２）とを有し、または、
前記粗アルゴン精留塔の全部が前記塔頂部（１１３）の上方に配置される場合に、前記粗アルゴン精留塔は、第二凝縮器（３２４）をその塔頂部（３２３）内あるいはその上方に備え、前記塔頂部（１１３）の上方にのみ配置される、空気分離装置。 The first rectification tower (11),
A rectifying column having a lower pressure than the first rectifying column (11), the second rectifying column (21) disposed adjacent to the first rectifying column (11);
A first condenser (122) disposed at the bottom or bottom (211) of the second rectifying column (21);
At least part of the crude argon rectification column or all of the crude argon rectification column, which is disposed above the top (113) of the first rectification column (11),
When a portion of the crude argon rectification column is disposed above the column top (113),
The crude argon rectification column includes a lower rectification column (31) disposed above the tower top (113), the second rectification column (21) and / or the first rectification column (11). And an upper rectifying column (32) with a second condenser (324) in or above its top (323), or
When all of the crude argon rectification tower is disposed above the tower top (113), the crude argon rectification tower places the second condenser (324) in or above the tower top (323). The air separation device is arranged only above the tower top (113). 前記第一精留塔（１１）は第一コールドボックス（１０ａ）内に配置され、前記第一凝縮器（１２１、１２２）は第一サブコールドボックス（１０ｂ）内に配置される、請求項１または２に記載の空気分離装置。 The first rectification column (11) is disposed in the first cold box (10a) in said first condenser (121, 122) is Ru is disposed in the first sub-cold box (10b) in claim 1 Or the air separation apparatus of 2. 前記第一精留塔（１１）および前記少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部が、第一コールドボックス（１０ａ）内に配置される、または、
前記第一精留塔（１１）が、第一コールドボックス（１０ａ）内に配置され、かつ前記少なくとも粗アルゴン精留塔の一部または粗アルゴン精留塔の全部が、前記第一コールドボックス（１０ａ）とは別のコールドボックス内に配置される、請求項１または２に記載の空気分離装置。 The first rectification column (11) and at least part of the crude argon rectification column or the whole of the crude argon rectification column are arranged in a first cold box ( 10a ), or
The first rectifying column (11) is disposed in the first cold box ( 10a ), and at least a part of the crude argon rectifying column or the entire crude argon rectifying column is disposed in the first cold box ( 10a ). The air separation device according to claim 1 or 2 , which is disposed in a cold box separate from 10a ). 前記第一精留塔（１１）、前記第二精留塔（２１）、前記粗アルゴン精留塔の内一つまたは二つ以上に隣接配置される、純アルゴン精留塔を、さらに備える請求項１〜４のいずれか１項に記載の空気分離装置。 The apparatus further comprises a pure argon rectification column disposed adjacent to one or more of the first rectification column (11), the second rectification column (21), and the crude argon rectification column. Item 5. The air separation device according to any one of Items 1 to 4 .
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