EP1134524B1 - Verfahren zur Gewinnung von gasförmigem Stickstoff - Google Patents
Verfahren zur Gewinnung von gasförmigem Stickstoff Download PDFInfo
- Publication number
- EP1134524B1 EP1134524B1 EP01105925A EP01105925A EP1134524B1 EP 1134524 B1 EP1134524 B1 EP 1134524B1 EP 01105925 A EP01105925 A EP 01105925A EP 01105925 A EP01105925 A EP 01105925A EP 1134524 B1 EP1134524 B1 EP 1134524B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nitrogen
- condenser
- evaporator
- oxygen
- air
- 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.)
- Expired - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000004821 distillation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract 5
- 239000006200 vaporizer Substances 0.000 abstract 5
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- 239000000047 product Substances 0.000 description 5
- 238000004887 air purification Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 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
- F25J3/044—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 single pressure main column system only
-
- 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
-
- 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
- F25J3/04321—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 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04351—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
Definitions
- the invention relates to a method according to the preamble of claim 1. It is used for the recovery of gaseous nitrogen by cryogenic separation of air in a distillation column system having a single column. Such a procedure is known from DE 196 23 310.
- Single column methods are a common method of producing nitrogen. she have, in contrast to double column method, only one pressure column (the single column) on and no further column (low-pressure column) leading to the nitrogen-oxygen separation used and operated at a lower pressure than the pressure column. This does not exclude that the distillation column system beyond the single column addition Having columns, for example, to obtain particularly pure nitrogen or Oxygen.
- distillation column system comprises the interconnected distillation columns, but not the heat exchangers or the machines like compressors or Expanders. In the simplest case, the distillation column system exclusively formed by the single column.
- oxygen-enriched is meant here a mixture of air gases, the has a higher oxygen concentration than air, to practically pure Oxygen.
- oxygen concentration preferably 25 to 90%, preferably 30 to 80%.
- a method with a nitrogen cycle according to the preamble of claim 1 is from US 4,400,188. With nitrogen in over in a cycle compressor Column pressure was brought, a condenser evaporator is heated, which the Sump heating of the single column represents. Process refrigeration is by a common Residual gas turbine generated with gas from another condenser-evaporator, a head capacitor operated.
- the invention is based on the object, a method of the type mentioned and to provide a corresponding device, the energy particularly favorable to operate.
- This object is achieved in that a second oxygen-enriched gas taken from the evaporation space of the condenser-evaporator, performing work is relaxed and warmed in the main heat exchanger.
- the total reflux liquid for the single column in the condenser-evaporator generated is the total reflux liquid for the single column in the condenser-evaporator generated. It is therefore generally only a single condenser-evaporator required.
- Air compressors and cycle compressors can be formed by a single machine be, namely by a combi-machine, in which several pinions on a shaft some of which are air compressors and one or more Realize cycle compressor.
- the cycle compressor can at least partially by a to the rest of the gas turbine coupled compressors are formed, wherein at least a part of the at work-performing expansion of the second oxygen-enriched gas generated mechanical energy to compress the first part and / or the second part the nitrogen-rich fraction is used.
- the invention also relates to a device according to claim 5.
- the top nitrogen 5 (the "nitrogen-rich fraction") from the single column 4 still contains 1 ppm to 1 ppb of oxygen and is in a subcooler 6 and (line 7) further in Main heat exchanger 2 warmed to about ambient temperature.
- the warm one Head nitrogen 8 is fed to a cycle compressor 9, for example, two to has three stages. Behind each stage of the cycle compressor is a After- or intermediate cooling to remove the heat of compression, of which, however, in the schematic drawing, only the aftercooling 10 behind the Amplifier is shown.
- a first part 12 of the compressed to a pressure of 9.5 bar Head nitrogen 11 is returned to the main heat exchanger 2, there to several Kelvin cooled above the column temperature and via line 13 the Liquefaction space of a condenser-evaporator 14 supplied.
- the resulting nitrogen-rich liquid 15 is in the subcooler. 6 subcooled and via line 16 and throttle valve 17 to the head of the single column given up.
- a portion 18 of the nitrogen-rich liquid 16 may be referred to as Liquid nitrogen product LIN are deducted.
- the liquid production is in the Example about 0% of the air volume.
- the liquid nitrogen from the Withdrawn from a single column, the head here as Flashgasabscheider between the Throttling valve 17 and the liquid product removal 18 is used.
- a second part 19 of the compressed in the cycle compressor 9 head nitrogen 11 is called gaseous nitrogen product under pressure (DGAN) dissipated.
- DGAN gaseous nitrogen product under pressure
- a portion 20 of the pressurized nitrogen from an intermediate stage of the cycle compressor led out and at a pressure between the operating pressure of the single column 4 and the final pressure of the cycle compressor 9 as gaseous pressure nitrogen product (DGAN ').
- DGAN gaseous pressure nitrogen product
- the cycle compressor 9 serves at the same time as a product compressor.
- the condenser-evaporator 14 is in the example of Figure 1 directly in the sump arranged the single column. On its evaporation side evaporates the oxygen-enriched bottoms liquid of the single column 4 below their operating pressure forming a vapor having an oxygen content of about 80%. While a first part of the vapor generated in the condenser-evaporator 14 in the single column. 4 rises ("first oxygen-enriched gas”), a second part 21 (“second oxygen-enriched gas”) oxygen-enriched gas ”) to the cold end of the main heat exchanger 2. After heating to an intermediate temperature, this fraction flows via line 22 to a residual gas turbine 23 and will work there from about 3 bar to about 1.5 bar relaxed.
- the working expanded oxygen-enriched gas 24 becomes completely warmed up in the main heat exchanger 2 and via line 25 as impure Oxygen product UGOX delivered. It can not be used as a regeneration gas in the illustrated air purification and / or used as a gaseous by-product and / or released into the atmosphere.
- the turbine 23 can via a Bypass 26 can be regulated. A small amount of liquid 27 becomes continuous or intermittently as rinsing liquid from the evaporation space of the condenser-evaporator 14 discharged.
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)
- Treating Waste Gases (AREA)
Description
Claims (5)
- Verfahren zur Gewinnung von gasförmigem Stickstoff durch Tieftemperaturzerlegung von Luft in einem Destilliersäulensystem, das eine Einzelsäule (4) aufweist, wobei bei dem VerfahrenEinsatzluft (1) in einem Luftverdichter verdichtet, in einem Hauptwärmetauscher (2) abgekühlt und der Einzelsäule (4) zugeführt (3) wird,eine stickstoffreiche Fraktion (5, 7, 8) aus dem Destilliersäulensystem abgezogen und mindestens zu einem erstem Teil in einem Kreislaufverdichter (9) verdichtet wird,der erste Teil (12, 13) der stickstoffreichen Fraktion (5, 7, 8) stromabwärts des Kreislaufverdichters (9) dem Verflüssigungsraum eines Kondensator-Verdampfers (14) zugeführt und dort unter einem Druck kondensiert wird, der höher als der Betriebsdruck der Einzelsäule (4) ist, wobei stickstoffreiche Flüssigkeit (15, 16) gebildet wird,eine flüssige sauerstoffangereicherte Fraktion aus dem Destilliersäulensystem im Verdampfungsraum des Kondensator-Verdampfers (14) mindestens teilweise verdampft wird,aus dem im Verdampfungsraum des Kondensator-Verdampfers (14) gebildeten Dampf (232) ein erstes sauerstoffangereichertes Gas erzeugt, in die Einzelsäule (4) eingeleitet und dort als aufsteigender Dampf verwendet wird undein zweiter Teil (19, 20) der stickstoffreichen Fraktion (5, 7, 8) zumindest zeitweise als gasförmiges Stickstoffprodukt abgezogen wird, dadurch gekennzeichnet, daßein zweites sauerstoffangereichertes Gas (21) aus dem Verdampfungsraum des Kondensator-Verdampfers (14) entnommen, arbeitsleistend entspannt (23) und im Hauptwärmetauscher (2) angewärmt wird.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die gesamte Rücklaufflüssigkeit für die Einzelsäule (4) in dem Kondensator-Verdampfer (14) erzeugt wird.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß Luftverdichter und Kreislaufverdichter (9) durch eine einzige Maschine gebildet werden.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Teil der bei der arbeitsleistenden Entspannung (23) des zweiten sauerstoffangereicherten Gases (21) erzeugten mechanischen Energie zur Verdichtung (9) des ersten Teils und/oder des zweiten Teils der stickstoffreichen Fraktion (5, 7, 8) eingesetzt wird.
- Vorrichtung zur Gewinnung von gasförmigem Stickstoff durch Tieftemperaturzerlegung von Luft mit einem Destilliersäulensystem, das eine Einzelsäule (4) aufweist, und miteinem Luftverdichter,einer Einsatzluftleitung (1, 3), die von dem Luftverdichter durch einen Hauptwärmetauscher (2) in die Einzelsäule (4) führt,einem Kreislaufverdichter (9) zur Verdichtung des ersten Teils einer stickstoffreichen Fraktion (5, 7, 8) aus dem Destilliersäulensystem,einer Kreislaufleitung (12, 13), die vom Austritt des Kreislaufverdichters ( 9) zu dem Verflüssigungsraum eines Kondensator-Verdampfers (14) führt wird,Mitteln zur Zuführung einer flüssigen sauerstoffangereicherten Fraktion aus dem Destilliersäulensystem zum Verdampfungsraum des Kondensator-Verdampfers (14),Mitteln zur Erzeugung eines ersten sauerstoffangereicherten Gases aus dem im Verdampfungsraum des Kondensator-Verdampfers (14) gebildeten Dampf und zu dessen Einleitung in die Einzelsäule (4) und miteiner Gasproduktleitung zum Abziehen eines zweiten Teils (19, 20) der stickstoffreichen Fraktion (5, 7, 8) als gasförmiges Stickstoffprodukt, gekennzeichnet durcheine Entspannungsmaschine (23) zur arbeitsleistenden Entspannung eines zweiten sauerstoffangereicherten Gases (21) aus dem Verdampfungsraum des Kondensator-Verdampfers (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10013074A DE10013074A1 (de) | 2000-03-17 | 2000-03-17 | Verfahren zur Gewinnung von gasförmigem Stickstoff |
| DE10013074 | 2000-03-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1134524A2 EP1134524A2 (de) | 2001-09-19 |
| EP1134524A3 EP1134524A3 (de) | 2002-01-09 |
| EP1134524B1 true EP1134524B1 (de) | 2005-10-05 |
Family
ID=7635135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01105925A Expired - Lifetime EP1134524B1 (de) | 2000-03-17 | 2001-03-09 | Verfahren zur Gewinnung von gasförmigem Stickstoff |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6470707B2 (de) |
| EP (1) | EP1134524B1 (de) |
| AT (1) | ATE306062T1 (de) |
| DE (2) | DE10013074A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10157544A1 (de) * | 2001-11-23 | 2003-06-12 | Messer Ags Gmbh | Verfahren und Vorrichtung zur Erzeugung von Stickstoff aus Luft |
| US7864163B2 (en) | 2006-09-06 | 2011-01-04 | Apple Inc. | Portable electronic device, method, and graphical user interface for displaying structured electronic documents |
| DE102007024168A1 (de) * | 2007-05-24 | 2008-11-27 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
| DE102007051183A1 (de) * | 2007-10-25 | 2009-04-30 | Linde Aktiengesellschaft | Verfahren zur Tieftemperatur-Luftzerlegung |
| DE102007051184A1 (de) * | 2007-10-25 | 2009-04-30 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
| EP2236964B1 (de) * | 2009-03-24 | 2019-11-20 | Linde AG | Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1392294A (en) * | 1971-06-28 | 1975-04-30 | British Oxygen Co Ltd | Air separation |
| US4400188A (en) * | 1981-10-27 | 1983-08-23 | Air Products And Chemicals, Inc. | Nitrogen generator cycle |
| DE19623310A1 (de) * | 1995-11-21 | 1996-11-07 | Linde Ag | Einzelsäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
| DE19543395A1 (de) * | 1995-11-21 | 1997-05-22 | Linde Ag | Doppelsäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
| EP0816784A1 (de) * | 1996-06-26 | 1998-01-07 | Crio & Eng S.r.l. | Vorrichtung zur Fraktionierung von Luft oder Sauerstoffstickstoff Gasgemischen zur Gewinnung von Stickstoff und Sauerstoff oder von Stickstoff |
| FR2767317B1 (fr) * | 1997-08-14 | 1999-09-10 | Air Liquide | Procede de conversion d'un debit contenant des hydrocarbures par oxydation partielle |
| GB9806293D0 (en) * | 1998-03-24 | 1998-05-20 | Boc Group Plc | Separation of air |
| DE10013073A1 (de) * | 2000-03-17 | 2000-10-19 | Linde Ag | Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft |
-
2000
- 2000-03-17 DE DE10013074A patent/DE10013074A1/de not_active Withdrawn
-
2001
- 2001-03-09 EP EP01105925A patent/EP1134524B1/de not_active Expired - Lifetime
- 2001-03-09 AT AT01105925T patent/ATE306062T1/de not_active IP Right Cessation
- 2001-03-09 DE DE50107586T patent/DE50107586D1/de not_active Expired - Lifetime
- 2001-03-19 US US09/810,708 patent/US6470707B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE306062T1 (de) | 2005-10-15 |
| US6470707B2 (en) | 2002-10-29 |
| EP1134524A3 (de) | 2002-01-09 |
| US20010052242A1 (en) | 2001-12-20 |
| DE50107586D1 (de) | 2005-11-10 |
| DE10013074A1 (de) | 2001-09-20 |
| EP1134524A2 (de) | 2001-09-19 |
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