WO1999057497A1 - Installation de distillation d'air et boite froide correspondante - Google Patents
Installation de distillation d'air et boite froide correspondante Download PDFInfo
- Publication number
- WO1999057497A1 WO1999057497A1 PCT/FR1999/000997 FR9900997W WO9957497A1 WO 1999057497 A1 WO1999057497 A1 WO 1999057497A1 FR 9900997 W FR9900997 W FR 9900997W WO 9957497 A1 WO9957497 A1 WO 9957497A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- column
- low pressure
- pressure column
- condenser
- medium pressure
- Prior art date
Links
- 238000004821 distillation Methods 0.000 title claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009417 prefabrication Methods 0.000 description 4
- 235000019362 perlite Nutrition 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04406—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
- F25J3/04406—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
- F25J3/04418—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 with thermally overlapping high and low pressure columns
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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
- F25J3/04436—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 at least a triple pressure main column system
- F25J3/04448—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 at least a triple pressure main column system in a double column flowsheet with an intermediate 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
- F25J3/0446—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 the heat generated by mixing two different phases
- F25J3/04466—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 the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04642—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
- F25J3/04763—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
- F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
- F25J3/04915—Combinations of different material exchange elements, e.g. within different columns
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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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
- F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, 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
- 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
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
- F25J2240/42—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval the fluid being air
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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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/62—Details of storing a fluid in a tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/902—Apparatus
- Y10S62/905—Column
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/902—Apparatus
- Y10S62/905—Column
- Y10S62/907—Insulation
Definitions
- the present invention relates to an air distillation installation of the type comprising a medium pressure column, a low pressure column and a vaporizer-condenser for connecting heat exchange of a circulating gas with a liquid of the low pressure column.
- the invention applies in particular to the supply of impure oxygen, for example for the supply of blast furnaces in the steel industry.
- a mixing column operates under a pressure substantially equal to or less than the medium pressure. It is supplied to the tank by a gas such as purified and compressed air and at the head by a liquid more volatile than the gas, such as impure liquid oxygen taken from the tank of the low pressure column and brought by pumping to the pressure of the mixing column.
- the impure gaseous oxygen to be supplied at the head of such a mixing column is substantially supplied under the pressure of the mixing column.
- the low pressure column overcomes the vaporizer-condenser, which itself overcomes the medium pressure column.
- the double column then forms a single erected structure and the mixing column is placed next to the double column.
- This arrangement of the double column allows the prefabrication in the workshop of the installation in a limited number of cold boxes or packages of which a main package includes the double column. These packages are then transported to site, where they are erected and connected to form the air distillation installation.
- cryogenic liquid storage tanks of low capacity up to a hundred m
- cryogenic fluid confinement elements of low capacity up to a hundred m
- the invention aims to solve this problem by providing a reliable, economical air distillation installation and making it possible to ensure reduced construction times.
- the subject of the invention is an air distillation installation comprising a medium pressure column, a low pressure column, a vaporizer-condenser for bringing heat exchange relation of a circulating gas with the tank liquid of the low pressure column and a cryogenic fluid confinement element other than the vaporizer-condenser, the low pressure column being next to the medium pressure column, characterized in that the tank of the low pressure column is above the medium pressure column tank and in that the low pressure column is disposed above this containment element.
- the installation can include one or more of the following characteristics, taken in isolation or according to all technically possible combinations: - the vaporizer-condenser is placed above the medium pressure column the element of cryogenic fluid containment includes a mixing column;
- the installation comprises means for sending air to the tank of the mixing column, means for sending a fluid rich in oxygen to the head of the mixing column and an oxygen production pipe impure gas withdrawn from the head of the mixing column; and 3 the cryogenic fluid confinement element comprises a reservoir for storing a cryogenic fluid, in particular liquid oxygen
- the fluid confinement element is an argon column supplied from the low pressure column, a column operating at an intermediate pressure between the low pressure and the medium pressure or a heat exchanger
- the tank of the low pressure column is at the same level as the head of the medium pressure column or above this level.
- the intermediate pressure column can be as described in EP-A-0538118 for example.
- the heat exchanger is not the evaporator-condenser which allows the exchange of heat between the tank liquid of the low pressure column and a circulating gas. If the medium pressure column and the low pressure column are part of a conventional double column, the bottom liquid of the low pressure column is heated by the top gas of the medium pressure column and liquids enriched in oxygen and nitrogen are sent from the medium pressure column to the low pressure column.
- the low pressure column and the cryogenic fluid confinement element are integral with one another.
- the invention also relates to a cold box intended for the construction of an installation as defined above, characterized in that it comprises the medium pressure column and the vaporizer-condenser or the low pressure column and the element containment of cryogenic fluid surrounded by a thermal insulation envelope.
- a method for mounting a separation device comprising at least one medium pressure column, a low pressure column, possibly a cryogenic fluid confinement element surmounted by the low pressure column, 4 and a vaporizer-condenser for at least partially condensing a circulating gas by heat exchange with a liquid of the low pressure column in which the low pressure and medium pressure columns are mounted one next to the other, each column having its own cold box and once the medium and low pressure columns are installed, the vaporizer-condenser is mounted above the medium pressure column and the construction of the cold box for the medium pressure column is completed.
- the vaporizer-condenser can make it possible to condense a gas from the medium pressure column by heat exchange with a liquid from the low pressure column.
- FIG. 1 is a schematic view of an installation according to the invention
- - Figure 2 is a partial schematic view of the lower parts of the cold boxes of a variant of the installation of Figure 1.
- FIG. 1 represents an air distillation installation 1 which essentially comprises: a double distillation column which comprises a medium pressure column 2, a low pressure column 3 and a vaporizer-condenser 4, for example of the bath type,
- the vaporizer-condenser 4 overcomes the medium pressure column 2 to form a first erected structure 16, the top of which is formed by the vaporizer-condenser 4.
- This structure 16 is surrounded by an insulation envelope 5 thermal 17 (in phantom), which keeps perlite not shown around the structure 16, forming a cold box with the same reference numeral.
- the low pressure column 3 is arranged above the mixing column 5 to form a second erected structure 19 or main structure.
- a connecting skirt 20 connects the columns 3 and 5 while keeping the head of the column 5 spaced from the tank of the column 3.
- the second structure 19 is surrounded by a thermal insulation envelope 21 (in phantom), which keeps perlite not shown around the structure 19, by forming a cold box bearing the same reference numeral.
- the heat exchangers 7 and 8 have been positioned so as to facilitate the representation, so that the cold box 17 is of relative dimensions, compared to the cold box 21, larger than in reality. In reality, these exchangers 7 and 8 are placed so as to optimize the compactness of the cold box 17 which contains them.
- the two structures 16 and 19 are arranged one next to the other, the lower part (bottom in the figure
- the air to be distilled, previously compressed by the compressor 9 and purified by the device 10, is then divided into two streams.
- a first flow crosses the main heat exchange line 6 while cooling down to the vicinity of its dew point. Then, this first flow is itself divided into two flows, one of which is injected into the tank of the medium pressure column 2 and the other of which is injected, after expansion in an expansion valve 22, into the tank of the column of mixture 5.
- the second stream of compressed and purified air is compressed by the compressor 11, then cooled to an intermediate temperature by partially crossing the main heat exchange line 6, and finally expanded at the crossing of the turbine 12. This second stream is then introduced at an upper intermediate level of the low pressure column 3.
- the vaporizer-condenser 4 vaporizes liquid oxygen, with a purity of about 98%, coming from the tank of the low pressure column 3 by condensation of nitrogen from the top of the medium pressure column 2.
- a pipe 24 sends the liquid oxygen from the tank of the low-pressure column 3 to the vaporizer-condenser 4, and a pipe 25 returns the oxygen vaporized from the vaporizer-condenser 4 to the tank of the column 3.
- the arrangement of a part of the vaporizer-condenser 4 at a level below that of the tank of the low pressure column 3 and above that of the head of the medium pressure column 2 allows the circulation, on the one hand, of liquid oxygen to the vaporizer-condenser 4 and, on the other hand, overhead nitrogen condensed towards the head of the medium pressure column 2, under the effect of gravity, without using a pump.
- the arrangement of at least part of the vaporizer-condenser 4 at an intermediate level between the head of the medium pressure column 2 and the tank of the low pressure column 3 makes it possible to minimize the necessary pumping means to the circulation of these liquids, whatever the type of vaporizer-condenser 4 used, namely bath, with liquid oxygen trickle (vaporizer-condenser said to film) ...
- Rich liquid ⁇ LR oxygen-enriched air
- a medium pressure tank 2 taken from a medium pressure tank 2 is sub-cooled on passing through the auxiliary heat exchanger 7, then expanded in an expansion valve 26 and finally injected at the intermediate level above-mentioned upper of the low pressure column 3.
- a mixing column is a column which has the same structure as a distillation column but which is used to mix in a manner close to reversibility a relatively volatile gas, introduced at its base, and a less volatile liquid introduced at its top. Such a mixture produces refrigerating energy and therefore makes it possible to reduce the energy consumption linked to distillation.
- Such a column is for example described in the document FR-A-2 143 986. In the present case, this mixture is used, moreover, to directly produce impure oxygen under a pressure slightly lower than that prevailing in the medium pressure column 2.
- liquid oxygen coming from the tank of the low pressure column 3, is withdrawn from the vaporizer-condenser 4, then pumped by the pump 13, and reheated on passing through the auxiliary heat exchanger
- a second liquid rich in oxygen is taken from the tank of the mixing column 5 and then sub-cooled on passing through the auxiliary heat exchanger 8.
- the second rich liquid is finally expanded in an expansion valve 29 before being introduced to a lower intermediate level of the low pressure column 3.
- Air enriched in oxygen, in liquid form, is drawn off from an intermediate level of the mixing column 5 and then sub-cooled on passing through the auxiliary heat exchanger 8. This liquid is finally expanded in an expansion valve 30 before being introduced to the level 8 above-mentioned upper intermediate of the low pressure column 3.
- Impure gaseous oxygen with a purity of about 95%, is taken from the top of the mixing column and then reheated at the crossing of the main heat exchange line 6 and distributed by a production line 31.
- the mixing column can be supplied at the head with several liquid flows of different composition.
- the cold boxes 17 and 21 were prefabricated in the workshop then transported, erected and functionally connected on site, then filled with perlite to form installation 1.
- the prefabrication of the main cold box 21 is not dependent on the manufacture of the vaporizer-condenser 4 since the latter is not part of the main structure 19.
- a company manufacturing columns 2, 3 and 5 can completely build the cold box 21 and practically the cold box 17 while awaiting the delivery of the vaporizer-condenser 4.
- the construction of the cold box 17 can be substantially advanced before this delivery, for example by assembling the medium pressure column 2, the side walls and the bottom of the thermal insulation envelope 17. All that remains is to mount the vaporizer -condenser 4 above the medium pressure column 2 and to complete the construction of the casing 17. These latter operations may possibly be carried out on site, the cold box 1 7 having been transported partially assembled.
- the invention therefore makes it possible to achieve the goals set at the beginning of the description by providing a reliable, economical installation and making it possible to ensure prefabrication times and therefore shorter construction times.
- This last advantage is due to the possibility of working in hidden time, i.e. the possibility of advancing 9 substantially the construction of the cold boxes during the construction of the vaporizer-condenser 4.
- the second structure 19 may comprise, in place of or in addition to the mixing column 5, a storage tank for a cryogenic liquid, in particular liquid oxygen, a so-called Etienne column with intermediate condenser (described by example in document US-A-2 699 046) or with an overhead condenser, a section of an impure argon production column called a mixture column, or any other element for confining cryogenic fluid placed under the low pressure column 3.
- a cryogenic fluid confinement element makes it possible to ensure relative positioning of the low pressure column 3 and of the vaporizer-condenser 4 allowing the circulation of liquid oxygen from the tank of the column 3 to the vaporizer-condenser 4 in minimizing the use of pumping means.
- FIG. 2 illustrates a variant in which a reservoir 32 for storing a cryogenic fluid is placed under the column of mixture 5 to form the main structure 19.
- the bottom of the tank 32 is at the same level as the tank of the medium pressure column 2.
- the tank 32 is, for example, a buffer capacity for storing liquid oxygen coming from the tank of the low pressure column 2.
- the low pressure column 3 is arranged on a support skirt to form the second erected structure 19.
- the double columns include a low pressure column with a single vaporizer-condenser which is used to condense the nitrogen in the medium pressure column by heat exchange with the bottom liquid of the low pressure column.
- the invention applies 10 also in the case in which the nitrogen of the medium pressure column is condensed by heat exchange with an intermediate liquid of the low pressure column, the tank liquid being vaporized by heat exchange with air, nitrogen compressed or a medium pressure column gas less volatile than nitrogen.
- two vaporizer-condensers can be used.
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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)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI9910080-0A BR9910080B1 (pt) | 1998-04-30 | 1999-04-27 | instalaÇço de destilaÇço de ar e processo para montagem de instalaÇço de destilaÇço de ar. |
DE69909288T DE69909288T2 (de) | 1998-04-30 | 1999-04-27 | Luftzerlegungsanlage und deren kühlbox |
EP99915849A EP1078212B1 (fr) | 1998-04-30 | 1999-04-27 | Installation de distillation d'air et boite froide correspondante |
JP2000547416A JP2002513908A (ja) | 1998-04-30 | 1999-04-27 | 空気蒸留プラントおよび付随するコールドボックス |
AU34286/99A AU745671B2 (en) | 1998-04-30 | 1999-04-27 | Air distillation plant and corresponding cold box |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/05532 | 1998-04-30 | ||
FR9805532A FR2778234B1 (fr) | 1998-04-30 | 1998-04-30 | Installation de distillation d'air et boite froide correspondante |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999057497A1 true WO1999057497A1 (fr) | 1999-11-11 |
Family
ID=9525933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/000997 WO1999057497A1 (fr) | 1998-04-30 | 1999-04-27 | Installation de distillation d'air et boite froide correspondante |
Country Status (10)
Country | Link |
---|---|
US (1) | US6167723B1 (fr) |
EP (1) | EP1078212B1 (fr) |
JP (1) | JP2002513908A (fr) |
KR (1) | KR100585247B1 (fr) |
AU (1) | AU745671B2 (fr) |
BR (1) | BR9910080B1 (fr) |
CZ (1) | CZ302387B6 (fr) |
DE (1) | DE69909288T2 (fr) |
FR (1) | FR2778234B1 (fr) |
WO (1) | WO1999057497A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10040391A1 (de) * | 2000-08-18 | 2002-02-28 | Linde Ag | Tieftemperaturluftzerlegungsanlage |
US6397631B1 (en) * | 2001-06-12 | 2002-06-04 | Air Products And Chemicals, Inc. | Air separation process |
ATE356326T1 (de) * | 2001-12-04 | 2007-03-15 | Air Prod & Chem | Verfahren und vorrichtung zur kryogenischen luftzerlegung |
DE10229663A1 (de) * | 2002-07-02 | 2004-01-22 | Linde Ag | Coldboxblechmantel |
GB0307404D0 (en) * | 2003-03-31 | 2003-05-07 | Air Prod & Chem | Apparatus for cryogenic air distillation |
FR2861841B1 (fr) * | 2003-11-04 | 2006-06-30 | Air Liquide | Procede et appareil de separation d'air par distillation cryogenique |
FR2860286A1 (fr) * | 2004-01-12 | 2005-04-01 | Air Liquide | Procede de separation d'air par distillation cryogenique |
FR2913758B3 (fr) * | 2007-03-12 | 2009-11-13 | Air Liquide | Procede et appareil de separation d'air par distillation cryogenique |
PL2553370T3 (pl) | 2010-03-26 | 2019-11-29 | Linde Ag | Urządzenie do niskotemperaturowej separacji powietrza |
DE102010012920A1 (de) | 2010-03-26 | 2011-09-29 | Linde Aktiengesellschaft | Vorrichtung zur Tieftemperaturzerlegung von Luft |
DE102012008415A1 (de) * | 2012-04-27 | 2013-10-31 | Linde Aktiengesellschaft | Transportables Paket mit einer Coldbox, Tieftemperatur-Luftzerlegungsanlage und Verfahren zum Herstellen einer Tieftemperatur-Luftzerlegungsanlage |
FR3114382B1 (fr) | 2020-09-21 | 2022-11-25 | Air Liquide | Appareil de séparation d’air par distillation cryogénique à trois colonnes dont deux colonnes concentriques |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2143986A5 (fr) * | 1971-02-01 | 1973-02-09 | Air Liquide | |
US5244489A (en) * | 1991-06-12 | 1993-09-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for supplying a blast furnace with air enriched in oxygen, and corresponding installation for the reduction of iron ore |
US5442925A (en) * | 1994-06-13 | 1995-08-22 | Air Products And Chemicals, Inc. | Process for the cryogenic distillation of an air feed to produce a low to medium purity oxygen product using a single distillation column system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL67409C (fr) * | 1947-10-22 | 1900-01-01 | ||
JPH0731002B2 (ja) * | 1987-12-21 | 1995-04-10 | 日本酸素株式会社 | 空気液化分離装置 |
FR2670278B1 (fr) * | 1990-12-06 | 1993-01-22 | Air Liquide | Procede et installation de distillation d'air en regime variable de production d'oxygene gazeux. |
JPH05187764A (ja) * | 1992-01-09 | 1993-07-27 | Kobe Steel Ltd | 空気分離装置 |
FR2695714B1 (fr) * | 1992-09-16 | 1994-10-28 | Maurice Grenier | Installation de traitement cryogénique, notamment de distillation d'air. |
FR2706025B1 (fr) * | 1993-06-03 | 1995-07-28 | Air Liquide | Installation de distillation d'air. |
GB9405071D0 (en) * | 1993-07-05 | 1994-04-27 | Boc Group Plc | Air separation |
GB9325648D0 (en) * | 1993-12-15 | 1994-02-16 | Boc Group Plc | Air separation |
GB9414938D0 (en) * | 1994-07-25 | 1994-09-14 | Boc Group Plc | Air separation |
US5454227A (en) * | 1994-08-17 | 1995-10-03 | The Boc Group, Inc. | Air separation method and apparatus |
US5490391A (en) * | 1994-08-25 | 1996-02-13 | The Boc Group, Inc. | Method and apparatus for producing oxygen |
US5649433A (en) * | 1995-06-29 | 1997-07-22 | Daido Hoxan Inc. | Cold evaporator |
-
1998
- 1998-04-30 FR FR9805532A patent/FR2778234B1/fr not_active Expired - Fee Related
-
1999
- 1999-04-27 BR BRPI9910080-0A patent/BR9910080B1/pt not_active IP Right Cessation
- 1999-04-27 CZ CZ20004024A patent/CZ302387B6/cs not_active IP Right Cessation
- 1999-04-27 JP JP2000547416A patent/JP2002513908A/ja active Pending
- 1999-04-27 EP EP99915849A patent/EP1078212B1/fr not_active Expired - Lifetime
- 1999-04-27 WO PCT/FR1999/000997 patent/WO1999057497A1/fr active IP Right Grant
- 1999-04-27 KR KR1020007011914A patent/KR100585247B1/ko not_active IP Right Cessation
- 1999-04-27 AU AU34286/99A patent/AU745671B2/en not_active Ceased
- 1999-04-27 DE DE69909288T patent/DE69909288T2/de not_active Expired - Lifetime
- 1999-04-30 US US09/302,995 patent/US6167723B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2143986A5 (fr) * | 1971-02-01 | 1973-02-09 | Air Liquide | |
US5244489A (en) * | 1991-06-12 | 1993-09-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for supplying a blast furnace with air enriched in oxygen, and corresponding installation for the reduction of iron ore |
US5442925A (en) * | 1994-06-13 | 1995-08-22 | Air Products And Chemicals, Inc. | Process for the cryogenic distillation of an air feed to produce a low to medium purity oxygen product using a single distillation column system |
Also Published As
Publication number | Publication date |
---|---|
AU3428699A (en) | 1999-11-23 |
KR20010043048A (ko) | 2001-05-25 |
US6167723B1 (en) | 2001-01-02 |
BR9910080B1 (pt) | 2008-11-18 |
EP1078212B1 (fr) | 2003-07-02 |
EP1078212A1 (fr) | 2001-02-28 |
DE69909288D1 (de) | 2003-08-07 |
FR2778234B1 (fr) | 2000-06-02 |
CZ20004024A3 (en) | 2001-05-16 |
CZ302387B6 (cs) | 2011-04-27 |
AU745671B2 (en) | 2002-03-28 |
FR2778234A1 (fr) | 1999-11-05 |
DE69909288T2 (de) | 2004-04-22 |
KR100585247B1 (ko) | 2006-06-01 |
BR9910080A (pt) | 2000-12-26 |
JP2002513908A (ja) | 2002-05-14 |
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