EP0605262B1 - Procédé et installation de production d'oxygène gazeux sous pression - Google Patents
Procédé et installation de production d'oxygène gazeux sous pression Download PDFInfo
- Publication number
- EP0605262B1 EP0605262B1 EP93402665A EP93402665A EP0605262B1 EP 0605262 B1 EP0605262 B1 EP 0605262B1 EP 93402665 A EP93402665 A EP 93402665A EP 93402665 A EP93402665 A EP 93402665A EP 0605262 B1 EP0605262 B1 EP 0605262B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- column
- low
- oxygen
- production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 26
- 239000001301 oxygen Substances 0.000 title claims description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000004821 distillation Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 239000002912 waste gas Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 17
- 238000009413 insulation Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229940095054 ammoniac Drugs 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
- F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
- F25J3/042—Division of the main heat exchange line in consecutive sections having different functions having an intermediate feed connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
-
- 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
-
- 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
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
-
- 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
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
- F25J3/0426—The cryogenic component does not participate in the fractionation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
- F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04854—Safety aspects of operation
- F25J3/0486—Safety aspects of operation of vaporisers for oxygen enriched liquids, e.g. purging of liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/0489—Modularity and arrangement of parts of the air fractionation unit, in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- 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
- F25J3/04945—Details of internal structure; insulation and housing of the cold box
-
- 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
- F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
-
- 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
- F25J2210/42—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/50—Oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- 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
- F25J2240/44—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 nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/50—Processes or apparatus involving steps for recycling of process streams the recycled stream being oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
-
- 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
-
- 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
- Y10S62/912—External refrigeration system
- Y10S62/913—Liquified gas
Definitions
- the present invention relates to a production process gaseous oxygen under pressure by means of a double column of distillation.
- gaseous oxygen under pressure takes place generally either by compression of gaseous oxygen withdrawn from the column low pressure at a pressure close to atmospheric pressure, i.e. by vaporization of liquid oxygen brought by pump to the pressure of production.
- the corresponding installations are complex because they require special rotating machines such as a compressor of oxygen or one or more expansion turbines.
- EP-A-0102190 describes a process of the "toggle" type which allows the production of variable oxygen flows.
- FR-A-2578532 describes a double column process, the column medium pressure and the low pressure column each having a condenser with means for sending liquid nitrogen from the column low pressure at the medium pressure column.
- US-A-3316725 describes an air separation apparatus in which the air is purified after a relaxation step in a relaxation machine. Air liquid sent to and from the purification device is expanded by expansion Joule-Thomson.
- EP-A-461804 describes a method according to the preamble of claim 1.
- the process of Figures 1 and 2 can be modified to allow production pure oxygen.
- the object of the invention is to provide a method for producing particularly economical way of gaseous oxygen under pressure moderate.
- the invention also relates to an installation according to the claim 3.
- the double column can in particular be vacuum-insulated, in particular by a vacuum envelope which contains only the double column and pipe sections, the rest of the cold parts of the installation, with the possible exception of sources of liquid nitrogen and / or of liquid oxygen and the pipes which leave from it, being insulated by a box cold at atmospheric pressure containing a solid insulator, in particular particulate.
- FIG. 1 essentially comprises a air compressor 1, adsorption purification device 2, one line heat exchange 3, a sub-cooler 4 and a double column of distillation 5.
- the latter consists essentially of a column medium pressure 6 surmounted by a low pressure column 7, and a vaporizer-condenser 8 which brings the indirect heat exchange relationship into overhead vapor (practically pure nitrogen) from column 6 and tank liquid (oxygen at desired purity) from column 7.
- the air to be distilled is compressed in 1 at a pressure, so-called medium pressure, of the order of 8 to 16 bars, purified in water and anhydride carbonic in 2, cooled near its dew point in 3 and introduced in the bottom of column 6.
- the "rich liquid” (oxygen enriched air) collected in tank of this column is sub-cooled in 4, expanded in an expansion valve 9 at a pressure, called low pressure, which is substantially the production pressure, of the order of 2 to 5 bars, and introduced at a level column 7 via line 10.
- From “poor liquid” (practically pure nitrogen) collected in head of column 6 is sub-cooled in 4, expanded in an expansion valve 11 at low pressure, and introduced at the head of column 7 via a line 12.
- Oxygen production is withdrawn in gaseous form from the tank from column 7, heated in exchange line 3 and recovered directly as a product via a pipe 13.
- the residual gas W (impure nitrogen), withdrawn at top of column 7 via line 14, is relaxed in free expansion at a pressure slightly higher than atmospheric pressure in an expansion valve 15, heated in sub-cooler 4 then in the line exchange 3, and evacuated via a pipe 16. This gas can serve to regenerate the adsorbers of the device 2.
- the installation shown is isolated thermally as follows.
- the double column 5 is arranged in a vacuum envelope 22, which ensures one high performance insulation.
- This envelope does contains, in addition to the double column, that the sections of conducts that lead to it or leave it, these conducts passing through the enclosure by means of appropriate fittings 23. In practice, it is advantageous to bring together all fittings 23 in the same region of the envelope.
- the vacuum envelope can have a diameter closely matched to the outside diameter of the double column, which can be of constant diameter on its full height, which allows for a set double column 5-envelope 22 conveniently transportable.
- this solution is also very beneficial, although it is much less expensive than vacuum insulation containing the entire installation. Indeed, in an air distillation installation, 75 to 85% of heat losses are borne by the double column and, in the heat exchange line, the losses are concentrated in the coldest part. In total, insulation performance of the 22-24 assembly is around 90% of those that would be obtained with a vacuum insulation of the entire installation.
- the double column may include a "minaret", that is to say an upper section of the low pressure column 7 enabling sound to be produced top of nitrogen gas under low pressure.
- this nitrogen gas can also be expanded in an expansion valve to the vicinity of the pressure atmospheric to produce cold, before being reheated in 4 then in 3 then to be recovered as second product of the installation.
- the cold behavior of installation is carried out by free expansion of the gas W waste in 15, supplemented by an oxygen supply liquid from a source 19 constituted as previously from storage 19A at atmospheric pressure and a 19B pump.
- the oxygen make-up liquid pumped in 19B at some pressure little higher than the low pressure, is injected, in one intermediate point 25 of the heat exchange line 3, in gaseous oxygen during heating.
- an oxygen purge line 26 liquid fitted with a valve 27, starts from the tank of the column 7 and opens into storage 19A to supply it partly, the supplement of liquid oxygen being brought in by tankers 28.
- the purge intended to evacuate the hydrocarbons from column 7, corresponds to about 0.2% of the flow treated air and preferably takes place discontinuously, usually automatically; it is independent of "bottle feeding" of the installation by liquid oxygen.
- the injection point 25 is chosen so that liquid oxygen vaporizes at a temperature high enough for the oil to show more danger of explosion or flammability when vaporization of oxygen. This temperature can thus be of the order of -100 ° C.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
Description
- on détend par détente libre un gaz résiduaire soutiré de la tête de la colonne basse pression.
- la Figure 1 représente schématiquement une installation de production d'oxygène conforme à l'invention; et
- la Figure 2 représente schématiquement une variante.
- Une source 17 d'azote liquide sous la basse pression, reliée à la tête de la colonne 7 via une conduite 18 et munie de moyens de régulation de débit. Comme représenté, il peut s'agir notamment d'un stockage 17A d'azote liquide sous la pression atmosphérique muni à sa sortie d'une pompe 17B.
- Une source 19 d'oxygène liquide sous la basse pression, reliée à la cuve de la colonne 7 via une conduite 20 et munie de moyens de régulation de débit. Comme représenté, il peut s'agir de nouveau d'un stockage 19A d'oxygène liquide sous la pression atmosphérique muni à sa sortie d'une pompe 19B.
- Un groupe frigorifique 21, par exemple à l'ammoniac, monté entre le compresseur 1 et l'appareil d'épuration 2 et prérefroidissant l'air comprimé jusqu'à une température de l'ordre de 0 à +° 5°C par exemple.
Claims (5)
- Procédé de production d'oxygène gazeux sous pression au moyen d'une double colonne de distillation (5) dans lequel on récupère directement l'oxygène gazeux de production en cuve d'une colonne basse pression (7) :on fait fonctionner la colonne basse pression (7) sous une pression nettement supérieure à la pression atmosphérique et légèrement supérieure à la pression de production d'oxygène, cette basse pression étant notamment de l'ordre de 2 à 5 bars, et on fait fonctionner la colonne moyenne pression (6) sous une pression correspondante, notamment de l'ordre de 8 à 16 bars;
caractérisé en ce quel'on maintient en froid l'installation, au moins en partie, par détente libre d'au moins un produit gazeux sortant de la colonne basse pression, et on maintient en froid l'installation, sans avoir recours à la détente avec production de travail extérieur d'un fluide destiné à ou provenant de la double colonne et dans le cas où l'installation est partiellement maintenue en froid par détente libre, on injecte en (18) dans la colonne basse pression (7) un débit d'azote liquide provenant d'une source (17) extérieure à la double colonne (5) et/ou on injecte (en 20) dans la colonne basse pression (7) un débit d'oxygène liquide provenant d'une source (19) extérieure à la double colonne (5) et/ou on injecte dans l'oxygène gazeux (en 25), en un point intermédiaire de la ligne d'échange thermique (3) associée à la double colonne (5), un débit d'oxygène liquide provenant d'une source extérieure à la double colonne, et en ce qu'on envoie dans ladite source (19) de l'oxygène liquide de purge soutiré (en 26) de la cuve de la colonne basse pression (7) et/ou on pré-refroidit l'air à traiter, avant son épuration par adsorption (en 2), au moyen d'un groupe frigorifique (21). - Procédé suivant la revendication 1, caractérisé en ce qu'on détend par détente libre un gaz résiduaire (W) soutiré de la tête de la colonne basse pression (7).
- Installation de production d'oxygène gazeux sous pression du type comprenant : un compresseur d'air (1); un appareil (2) d'épuration de l'air comprimé; une double colonne (5) de distillation de l'air épuré, comprenant elle-même une colonne moyenne pression (6) et une colonne basse pression (7) couplées par une vaporiseur-condenseur (8); une ligne d'échange thermique (3) pour refroidir l'air épuré par échange de chaleur indirect avec les produits provenant de la double colonne; et des moyens (15,17-18, 19-20, 21) de maintien en froid de l'installation, une conduite (13) de production d'oxygène étant directement reliée à la cuve de la colonne basse pression pour en soutirer de l'oxygène gazeux, la colonne basse pression (7) fonctionnant sous une pression nettement supérieure à la pression atmosphérique et légèrement supérieure à la pression de production d'oxygène, cette basse pression étant notamment de l'ordre de 2 à 5 bars caractérisée en ce que les moyens de maintien en froid comprennent une vanne (15) de détente libre d'au moins un produit gazeux sortant de la colonne basse pression (7), et éventuellement au moins un des moyens de maintien en froid suivants :a) des moyens pour injecter dans la colonne basse pression un débit d'azote liquide et/ou d'oxygène liquide provenant d'une (de) source(s) (17,19) sous la basse pression extérieure(s) à la double colonne,b) des moyens pour injecter dans l'oxygène gazeux, en un point intermédiaire de la ligne d'échange thermique, un débit d'oxygène liquide sous la basse pression provenant d'une source (19) extérieure à la double colonne et des moyens pour envoyer dans ladite source de l'oxygène liquide de purge soutiré de la cuve de la colonne basse pression,c) du groupe frigorifique (21) monté entre le compresseur (1) et l'appareil d'épuration (2),
les moyens de maintien de froid ne comprenant pas de machine ou turbine de détente avec production de travail extérieur d'un fluide destiné à ou provenant de la double colonne. - Installation suivant la revendication 3, caractérisée en ce que la vanne de détente (15) est montée dans une conduite (14) d'évacuation de gaz résiduaire (W) partant de la tête de la colonne basse pression (7).
- Installation selon la revendication 3 dans laquelle la double colonne est isolée sous vide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9215925 | 1992-12-30 | ||
| FR9215925A FR2699992B1 (fr) | 1992-12-30 | 1992-12-30 | Procédé et installation de production d'oxygène gazeux sous pression. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0605262A1 EP0605262A1 (fr) | 1994-07-06 |
| EP0605262B1 true EP0605262B1 (fr) | 2000-06-28 |
Family
ID=9437287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93402665A Revoked EP0605262B1 (fr) | 1992-12-30 | 1993-10-29 | Procédé et installation de production d'oxygène gazeux sous pression |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5408831A (fr) |
| EP (1) | EP0605262B1 (fr) |
| JP (1) | JPH06229668A (fr) |
| CA (1) | CA2112499A1 (fr) |
| DE (1) | DE69328922T2 (fr) |
| FR (1) | FR2699992B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282732A (zh) * | 2010-07-05 | 2013-09-04 | 乔治洛德方法研究和开发液化空气有限公司 | 通过低温蒸馏分离空气的装置和方法 |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2706195B1 (fr) * | 1993-06-07 | 1995-07-28 | Air Liquide | Procédé et unité de fourniture d'un gaz sous pression à une installation consommatrice d'un constituant de l'air. |
| FR2723184B1 (fr) * | 1994-07-29 | 1996-09-06 | Grenier Maurice | Procede et installation de production d'oxygene gazeux sous pression a debit variable |
| GB9521996D0 (en) * | 1995-10-27 | 1996-01-03 | Boc Group Plc | Air separation |
| US5682763A (en) * | 1996-10-25 | 1997-11-04 | Air Products And Chemicals, Inc. | Ultra high purity oxygen distillation unit integrated with ultra high purity nitrogen purifier |
| DE19732887A1 (de) * | 1997-07-30 | 1999-02-04 | Linde Ag | Verfahren zur Luftzerlegung |
| DE19737521A1 (de) * | 1997-08-28 | 1999-03-04 | Messer Griesheim Gmbh | Anlage zur Tieftemperaturzerlegung von Luft |
| FR2774752B1 (fr) * | 1998-02-06 | 2000-06-16 | Air Liquide | Installation de distillation d'air et boite froide correspondante |
| FR2774753B1 (fr) * | 1998-02-06 | 2000-04-28 | Air Liquide | Installation de distillation d'air comprenant plusieurs unites de distillation cryogenique de meme nature |
| FR2778233B1 (fr) * | 1998-04-30 | 2000-06-02 | Air Liquide | Installation de distillation d'air et boite froide correspondante |
| FR2793310A1 (fr) * | 1999-05-06 | 2000-11-10 | Air Liquide | Procede et dispositif de separation d'air par voie cryogenique avec elimination des aerosols liquides et/ou solides |
| US6182471B1 (en) * | 1999-06-28 | 2001-02-06 | Praxair Technology, Inc. | Cryogenic rectification system for producing oxygen product at a non-constant rate |
| EP1207362A1 (fr) | 2000-10-23 | 2002-05-22 | Air Products And Chemicals, Inc. | Procédé et appareil pour la production d'oxygène gazeux à basse pression |
| EP1582830A1 (fr) * | 2004-03-29 | 2005-10-05 | Air Products And Chemicals, Inc. | Procédé et dispositif pour la séparation cryogénique de l'air |
| US7272954B2 (en) * | 2004-07-14 | 2007-09-25 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Proceded Georges Claude | Low temperature air separation process for producing pressurized gaseous product |
| JP5005894B2 (ja) * | 2005-06-23 | 2012-08-22 | エア・ウォーター株式会社 | 窒素発生方法およびそれに用いる装置 |
| FR2972794B1 (fr) | 2011-03-18 | 2015-11-06 | Air Liquide | Appareil et procede de separation d'air par distillation cryogenique |
| DE102012008415A1 (de) * | 2012-04-27 | 2013-10-31 | Linde Aktiengesellschaft | Transportables Paket mit einer Coldbox, Tieftemperatur-Luftzerlegungsanlage und Verfahren zum Herstellen einer Tieftemperatur-Luftzerlegungsanlage |
| CN103157342A (zh) * | 2012-11-09 | 2013-06-19 | 中国科学院理化技术研究所 | 带强制换热结构的天然气/煤层气吸附净化方法及装置 |
| EP3559576A2 (fr) | 2016-12-23 | 2019-10-30 | Linde Aktiengesellschaft | Procédé de séparation cryogénique d'air et système de séparation de l'air |
| JP6900241B2 (ja) * | 2017-05-31 | 2021-07-07 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | ガス製造システム |
| FR3164276A1 (fr) | 2024-07-04 | 2026-01-09 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé de démarrage d’un appareil de séparation d’air par distillation cryogénique |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384483A2 (fr) * | 1989-02-23 | 1990-08-29 | Linde Aktiengesellschaft | Procédé et dispositif de rectification d'air |
| EP0384213A2 (fr) * | 1989-02-23 | 1990-08-29 | Linde Aktiengesellschaft | Procédé et dispositif de rectification d'air |
| EP0447112A1 (fr) * | 1990-03-09 | 1991-09-18 | Air Products And Chemicals, Inc. | Procédé cryogénique de séparation d'air pour la fabrication de l'azote |
| EP0461804A1 (fr) * | 1990-06-12 | 1991-12-18 | Air Products And Chemicals, Inc. | Procédé cryogénique de séparation de l'air pour la production de l'azote à pression modérée |
| EP0465193A1 (fr) * | 1990-07-02 | 1992-01-08 | Air Products And Chemicals, Inc. | Centrale à cycle combiné avec séparation d'air et gazéification de combustible intégré |
| EP0464630A1 (fr) * | 1990-06-27 | 1992-01-08 | Praxair Technology, Inc. | Système de séparation cryogénique de l'air à vaporiseur auxiliaire pour les deux produits |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1240397A (en) * | 1913-12-03 | 1917-09-18 | Linus Wolf | Apparatus for producing liquefied gas. |
| US1354380A (en) * | 1914-01-07 | 1920-09-28 | Godfrey L Cabot | Apparatus for producing liquid oxygen |
| BE487786A (fr) * | 1943-05-27 | |||
| US3316725A (en) * | 1964-05-20 | 1967-05-02 | Air Reduction | Refrigerating and conditioning of a process stream in a cryogenic process |
| GB2125949B (en) * | 1982-08-24 | 1985-09-11 | Air Prod & Chem | Plant for producing gaseous oxygen |
| FR2578532B1 (fr) * | 1985-03-11 | 1990-05-04 | Air Liquide | Procede et installation de production d'azote |
| JPH0721378B2 (ja) * | 1985-08-12 | 1995-03-08 | 大同ほくさん株式会社 | 酸素ガス製造装置 |
-
1992
- 1992-12-30 FR FR9215925A patent/FR2699992B1/fr not_active Expired - Fee Related
-
1993
- 1993-10-29 DE DE69328922T patent/DE69328922T2/de not_active Revoked
- 1993-10-29 EP EP93402665A patent/EP0605262B1/fr not_active Revoked
- 1993-12-06 US US08/161,545 patent/US5408831A/en not_active Expired - Fee Related
- 1993-12-21 JP JP5321458A patent/JPH06229668A/ja active Pending
- 1993-12-29 CA CA002112499A patent/CA2112499A1/fr not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384483A2 (fr) * | 1989-02-23 | 1990-08-29 | Linde Aktiengesellschaft | Procédé et dispositif de rectification d'air |
| EP0384213A2 (fr) * | 1989-02-23 | 1990-08-29 | Linde Aktiengesellschaft | Procédé et dispositif de rectification d'air |
| EP0447112A1 (fr) * | 1990-03-09 | 1991-09-18 | Air Products And Chemicals, Inc. | Procédé cryogénique de séparation d'air pour la fabrication de l'azote |
| EP0461804A1 (fr) * | 1990-06-12 | 1991-12-18 | Air Products And Chemicals, Inc. | Procédé cryogénique de séparation de l'air pour la production de l'azote à pression modérée |
| EP0464630A1 (fr) * | 1990-06-27 | 1992-01-08 | Praxair Technology, Inc. | Système de séparation cryogénique de l'air à vaporiseur auxiliaire pour les deux produits |
| EP0465193A1 (fr) * | 1990-07-02 | 1992-01-08 | Air Products And Chemicals, Inc. | Centrale à cycle combiné avec séparation d'air et gazéification de combustible intégré |
Non-Patent Citations (2)
| Title |
|---|
| Encyclopédie du froid, M. Pietre, "Les Très Basse Températures", 1952, Paris, librairie J.B. Baillère et fils, pages 40 à 43 * |
| G.N. Lewis, "Thermodynamics", McGraw-Hill, New York, pages 46 à 51 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282732A (zh) * | 2010-07-05 | 2013-09-04 | 乔治洛德方法研究和开发液化空气有限公司 | 通过低温蒸馏分离空气的装置和方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2699992A1 (fr) | 1994-07-01 |
| DE69328922T2 (de) | 2000-11-16 |
| FR2699992B1 (fr) | 1995-02-10 |
| JPH06229668A (ja) | 1994-08-19 |
| CA2112499A1 (fr) | 1994-07-01 |
| DE69328922D1 (de) | 2000-08-03 |
| EP0605262A1 (fr) | 1994-07-06 |
| US5408831A (en) | 1995-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0605262B1 (fr) | Procédé et installation de production d'oxygène gazeux sous pression | |
| EP0576314B1 (fr) | Procédé et installation de production d'oxygène gazeux sous pression | |
| EP0420725B1 (fr) | Procédé de production frigorifique, cycle frigorifique correspondant et leur application à la distillation d'air | |
| EP0628778B1 (fr) | Procédé et unité de fourniture d'un gaz sous pression à une installation consommatrice d'un constituant de l'air | |
| EP0689019B1 (fr) | Procédé et installation de production d'oxygène gazeux sous pression | |
| CA2146736C (fr) | Procede et installation de production de monoxyde de carbone | |
| EP0229803B1 (fr) | Procede et installation de distillation d'air | |
| FR2757282A1 (fr) | Procede et installation de fourniture d'un debit variable d'un gaz de l'air | |
| EP0789208A1 (fr) | Procédé et installation de production d'oxygène gazeux sous haute pression | |
| EP0618415B1 (fr) | Procédé et installation de production d'oxygène gazeux et/ou d'azote gazeux sous pression par distillation d'air | |
| EP0694746B1 (fr) | Procédé de production d'un gaz sous pression à débit variable | |
| EP1446620B1 (fr) | Procede et installation de production d'helium | |
| EP0641983B1 (fr) | Procédé et installation de production d'oxygène et/ou d'azote gazeux sous pression | |
| CA2261097A1 (fr) | Procede et installation de production d'un gaz de l'air a debit variable | |
| EP0612967B1 (fr) | Procédé de production d'oxygène et/ou d'azote sous pression | |
| EP0641982B1 (fr) | Procédé et installation de production d'au moins un gaz de l'air sous pression | |
| EP0611218B2 (fr) | Procédé et installation de production d'oxygene sous pression | |
| FR2837564A1 (fr) | Procede et installation de production d'oxygene et/ou d'azote sous pression et d'argon pur | |
| WO2022175204A1 (fr) | Procédé et appareil de liquéfaction d'hydrogène | |
| FR2705141A1 (fr) | Procédé et installation cryogénique de production d'argon. | |
| FR2795496A1 (fr) | Appareil et procede de separation d'air par distillation cryogenique | |
| EP3913310A1 (fr) | Procédé et appareil de séparation d'air par distillation cryogénique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19931109 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE GB IT SE |
|
| 17Q | First examination report despatched |
Effective date: 19950919 |
|
| APAB | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPE |
|
| APAD | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOS REFNE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APCB | Communication from the board of appeal sent |
Free format text: ORIGINAL CODE: EPIDOS OBAPE |
|
| APAB | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPE |
|
| APBJ | Interlocutory revision of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOS IRAPE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 17Q | First examination report despatched |
Effective date: 19950919 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE GB IT SE |
|
| ITF | It: translation for a ep patent filed | ||
| REF | Corresponds to: |
Ref document number: 69328922 Country of ref document: DE Date of ref document: 20000803 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000724 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000928 |
|
| PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| 26 | Opposition filed |
Opponent name: LINDE AKTIENGESELLSCHAFT Effective date: 20010328 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010914 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20010924 Year of fee payment: 9 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR |
|
| PLBP | Opposition withdrawn |
Free format text: ORIGINAL CODE: 0009264 |
|
| RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
| RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| 27W | Patent revoked |
Effective date: 20020919 |
|
| GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 20020919 |
|
| APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |