JP6557763B1 - Air separation device - Google Patents
Air separation device Download PDFInfo
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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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- 238000000926 separation method Methods 0.000 title claims abstract description 49
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 182
- 229910052786 argon Inorganic materials 0.000 claims abstract description 91
- 238000009434 installation Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 49
- 239000001301 oxygen Substances 0.000 description 49
- 229910052760 oxygen Inorganic materials 0.000 description 49
- 239000007789 gas Substances 0.000 description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- 238000001816 cooling Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 241001648319 Toronia toru Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
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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
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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
- F25J3/04642—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
- 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
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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
- F25J3/04763—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.
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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
- F25J3/04763—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
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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
- F25J3/04763—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
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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
- F25J3/04763—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"
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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
- 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
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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
- 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
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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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/58—Argon
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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
- F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being nitrogen
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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
- F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being 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
- 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)
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- Separation By Low-Temperature Treatments (AREA)
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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。
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.
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.
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
The
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
The
The
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
The
The
The pure
The pure
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
The first oxygen-enriched liquid feed line L <b> 2 is a line through which the first oxygen-enriched liquid is sent from the
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
The second oxygen-enriched liquid feed line L <b> 4 is a line for sending the second oxygen-enriched liquid from the
The
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
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
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
(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
The crude
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
The
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
The
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
The pure
The pure
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
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
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
The first oxygen-enriched liquid feed line L4 is a line for sending the first oxygen-enriched liquid from the
The
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
The first argon-enriched liquid feed line L <b> 6 is a line through which the first argon-enriched liquid is sent from the
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
(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
The crude
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.
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
Claims (5)
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).
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)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 ).
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