EP1006326A1 - Verfahren und Vorrichtung zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft - Google Patents
Verfahren und Vorrichtung zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft Download PDFInfo
- Publication number
- EP1006326A1 EP1006326A1 EP99102628A EP99102628A EP1006326A1 EP 1006326 A1 EP1006326 A1 EP 1006326A1 EP 99102628 A EP99102628 A EP 99102628A EP 99102628 A EP99102628 A EP 99102628A EP 1006326 A1 EP1006326 A1 EP 1006326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- krypton
- oxygen
- column
- xenon
- pressure
- 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.)
- Granted
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
- F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04642—Recovering noble gases from air
- F25J3/04745—Krypton and/or Xenon
-
- 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
- F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/92—Details relating to the feed point
-
- 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
- F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
- F25J2200/94—Details relating to the withdrawal point
-
- 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
Definitions
- the invention is based on a process for obtaining pressurized oxygen, at the compressed and pre-cleaned feed air is introduced into the rectification system and removed a first oxygen fraction from the low pressure column, liquid onto one brought increased pressure, evaporated and as a gaseous pressurized oxygen product is dissipated.
- the invention has for its object in such a method and in a corresponding device in addition to the pressurized oxygen product on Krypton and to obtain xenon-enriched product in an economically advantageous manner.
- the Bottom fraction of the low pressure column (the second oxygen fraction) in a krypton-xenon enrichment column (Methane discharge column) initiated on its head Low krypton / xenon liquid oxygen is given up. So the methane, that accumulates in the bottom of the low pressure column via the gaseous Top product of the methane discharge column are removed from the process.
- the Bottom product of the methane discharge column contains only extremely small amounts methane and is enriched in krypton and xenon.
- the krypton-xenon enrichment column (which may be called Methane discharge column works) operated under an increased pressure, which preferably corresponds approximately to the desired product pressure in the pressurized oxygen.
- the operating pressure of the krypton-xenon enrichment column is, for example, 1.5 up to 10 bar, preferably at 2.5 to 7 bar.
- the liquid oxygen from which the Pressurized oxygen product is formed (the first oxygen fraction) will not like usually deducted from their sump, but above a mass transfer section, which keeps krypton and xenon in the sump of the low pressure column. It forms the Low-krypton / xenon return liquid for the krypton-xenon enrichment column.
- the mass transfer section below the deduction of the first oxygen fraction is by at least one, preferably one to five, most preferably one to three rectification trays formed, which are arranged directly above the low pressure column sump.
- a two or more column system for nitrogen-oxygen separation is preferred in the invention used, in addition to the low pressure column Has high pressure column, which is under higher pressure than the low pressure column is operated.
- the high-pressure column and the low-pressure column are preferably one common condenser-evaporator (main condenser) thermally coupled, in the nitrogen-rich vapor of the high pressure column against an evaporating one condensed oxygen-rich liquid from the low pressure column.
- the invention is however, it can also be implemented in a single-column system in which the low-pressure column is formed by a single column.
- the use of the term low pressure column does not necessarily mean that this column is operated at about atmospheric pressure becomes.
- Low pressure column can also be operated under increased pressure.
- the operating pressure the low pressure column is, for example, 1.1 to 4 bar, preferably 1.1 to 2.0 bar.
- the krypton-xenon enrichment column is below the critical pressure operated by oxygen, depending on the product pressure, for example at 2 to 10 bar, preferably at 5 to 6 bar.
- the first oxygen fraction is not directly at the bottom of the low pressure column, but at least one practical or theoretical floor above the swamp or taken above the withdrawal of the second oxygen fraction.
- the information in practical terms Soil numbers; if packing, packing or combinations of different types of Mass transfer elements are used, the information is in theoretical Any number can be used to increase the pressure in the liquid state known means or a combination of different known means be used.
- Krypton-xenon enrichment column results from the inventive method an increase in the yield of krypton and / or Xenon by 20 to 25%.
- the second oxygen fraction must be in the krypton-xenon enrichment column before it is introduced are brought to their operating pressure.
- the second oxygen fraction before being introduced into the krypton-xenon enrichment column however brought to an increased pressure in the liquid state and then liquid into the krypton-xenon enrichment column.
- the feed air preferably condenses in the bottom evaporator at least partially.
- the condensate generated by indirect heat exchange is introduced, for example, into one of the pillars of the rectification system, preferably in the low pressure column.
- the feed air used as heating means is preferably upstream of the Bottom evaporator is brought to a pressure which is higher than the highest Operating pressure of the rectification system columns.
- This pressure is chosen so that the condensation temperature of the feed air in the bottom evaporator, for example about 1 to 2 K above the evaporation temperature of the bottom liquid of the krypton-xenon enrichment column lies.
- This can be achieved, for example, by that the entire feed air is compressed to a very high pressure (for example, over high pressure column pressure in the case of a two-column system) or that the partial flow used as a heating medium is of a lower level (for example high pressure column pressure) is post-compressed to this high pressure.
- the invention further relates to a device for extracting pressurized oxygen and Krypton / Xenon according to claims 5 to 7.
- Nitrogen 6 and raw oxygen 7 are subcooled in a first counterflow 5 at least partially into the low pressure column 3 (Operating pressure 1.2 to 1.7 bar, preferably 1.2 to 1.4 bar) fed.
- High pressure and Low pressure column are 10 in via a condenser-evaporator Heat exchange relationship. From the upper area of the low pressure column 3 pure and impure nitrogen 8, 9 taken as products and in counterflow 5 and warmed in the main heat exchanger, not shown.
- a first oxygen fraction 11 is three floors above the Low pressure column sump removed liquid, by means of a pump 12 to one Brought pressure of 9 bar, subcooled in a second countercurrent and over Line 14 abandoned on the head of a krypton-xenon enrichment column 15.
- the feed point is three trays above the bottom of the krypton-xenon enrichment column 15.
- a krypton-xenon preconcentrate is removed from the bottom of the krypton-xenon enrichment column 15 19 deducted as a krypton and / or xenon enriched fraction. It can be collected in a tank or directly for further process steps Extraction of krypton and / or xenon can be supplied.
- the head gas 24 of the Krypton-xenon enrichment column 15 forms the pressurized oxygen product and is in the Main heat exchanger warmed against feed air (not shown).
- the krypton-xenon enrichment column 15 is through indirect heat exchange 20 heated with a second cleaned and cooled feed air flow 21, the under a pressure of 22 bar.
- the resulting condensate 22 is in the second Counterflow 13 warmed and the high pressure column 2 some floors above the Feed of the first feed air stream 4 fed (23).
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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 (7)
- Verfahren zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft in einem Rektifiziersystem, das eine Niederdrucksäule (3) zur Stickstoff-Sauerstoff-Trennung und eine Krypton-Xenon-Anreicherungssäule (15) aufweist, wobei bei dem Verfahrenverdichtete und vorgereinigte Einsatzluft (4, 21, 22, 23) in das Rektifiziersystem eingeleitet wird undeine erste Sauerstofffraktion (11) der Niederdrucksäule (3) entnommen, flüssig auf einen erhöhten Druck gebracht (12), verdampft und als gasförmiges Drucksauerstoffprodukt (24) abgeführt wird,
wobei bei dem Verfahren fernereine zweite Sauerstofffraktion (16) der Niederdrucksäule (3) entnommen und in den unteren oder mittleren Bereich der Krypton-Xenon-Anreicherungssäule (15) geleitet (18) wird,die erste Sauerstofffraktion (11) mindestens einen praktischen oder theoretischen Boden oberhalb des Sumpfs der Niederdrucksäule (3) entnommen und nach der Druckerhöhung (12) im flüssigen Zustand in den oberen Bereich der Krypton-Xenon-Anreicherungssäule (15) eingeführt (14) wird,dem unteren Bereich der Krypton-Xenon-Anreicherungssäule (15) eine krypton- und/oder xenonangereicherte Fraktion (19) entnommen wird unddas Drucksauerstoffprodukt (24) gasförmig aus dem oberen Bereich der Krypton-Xenon-Anreicherungssäule (15) abgezogen wird. - Verfahren nach Anspruch 1, bei dem die zweite Sauerstofffraktion (11) vor ihrer Einleitung (18) in die Krypton-Xenon-Anreicherungssäule (15) in flüssigem Zustand auf einen erhöhten Druck gebracht (17) wird.
- Verfahren nach Anspruch 1 oder 2, bei dem die Krypton-Xenon-Anreicherungssäule (15) einen Sumpfverdampfer (20) aufweist, wobei insbesondere Einsatzluft (21) als Heizmittel für den Sumpfverdampfer (20) verwendet wird.
- Verfahren nach Anspruch 3, bei dem die als Heizmittel verwendete Einsatzluft (21) stromaufwärts des Sumpfverdampfers (20) auf einen Druck gebracht wird, der höher als der höchste Betriebsdruck der Säulen (2, 3, 15) des Rektifiziersystems ist.
- Vorrichtung zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft mit einem Rektifiziersystem, das eine Niederdrucksäule (3) zur Stickstoff-Sauerstoff-Trennung und eine Krypton-Xenon-Anreicherungssäule (15) aufweist, und miteiner Einsatzluftleitung (4) zur Einleitung von verdichteter und vorgereinigter Einsatzluft in das Rektifiziersystem,einer ersten Sauerstoffleitung (11, 14) zur Entnahme einer ersten Sauerstofffraktion als Flüssigkeit aus der Niederdrucksäule (3), die ein Mittel (12) zur Erhöhung des Drucks der ersten Sauerstofffraktion in flüssigem Zustand aufweist und stromabwärts des Mittels zur Druckerhöhung mit einem Mittel zur Verdampfung der flüssig auf Druck gebrachten ersten Sauerstofffraktion verbunden ist undmit einer Druckproduktleitung (24), die mit dem Mittel zur Verdampfung verbunden ist,
wobei fernereine zweite Sauerstoffleitung (16, 18) zur Entnahme einer zweiten Sauerstofffraktion aus der Niederdrucksäule (3) mit dem unteren oder mittleren Bereich der Krypton-Xenon-Anreicherungssäule (15) verbunden ist,in der Niederdrucksäule (3) zwischen der ersten Sauerstoffleitung (11) und dem Sumpf ein Stoffaustauschabschnitt angeordnet ist, der mindestens einen praktischen oder theoretischen Boden umfaßt,das Mittel zur Verdampfung durch die Krypton-Xenon-Anreicherungssäule (15) gebildet wird, wobei die erste Sauerstoffleitung (11, 14) mit dem oberen Bereich der Krypton-Xenon-Anreicherungssäule (15) verbunden ist,eine Vorkonzentratleitung (19) zur Entnahme einer krypton- und/oder xenonangereicherten Fraktion mit dem unteren Bereich der Krypton-Xenon-Anreicherungssäule (15) verbunden ist unddie Druckproduktleitung (24) mit dem oberen Bereich der Krypton-Xenon-Anreicherungssäule (15) verbunden ist. - Vorrichtung nach Anspruch 5, bei der die zweite Sauerstoffleitung stromaufwärts der Krypton-Xenon-Anreicherungssäule ein Mittel zur Druckerhöhung der zweiten Sauerstofffraktion in flüssigem Zustand aufweist.
- Vorrichtung nach Anspruch 5 oder 6, bei dem die Krypton-Xenon-Anreicherungssäule einen Kondensator-Verdampfer als Sumpfverdampfer aufweist, dessen Kondensationsraum mit einer Heizmittelleitung zur Einleitung eines Heizmittels, insbesondere von Einsatzluft verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19855487 | 1998-12-01 | ||
DE19855487A DE19855487A1 (de) | 1998-12-01 | 1998-12-01 | Verfahren und Vorrichtung zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1006326A1 true EP1006326A1 (de) | 2000-06-07 |
EP1006326B1 EP1006326B1 (de) | 2004-04-21 |
Family
ID=7889673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99102628A Expired - Lifetime EP1006326B1 (de) | 1998-12-01 | 1999-02-11 | Verfahren und Vorrichtung zur Gewinnung von Drucksauerstoff und Krypton/Xenon durch Tieftemperaturzerlegung von Luft |
Country Status (8)
Country | Link |
---|---|
US (1) | US6301929B1 (de) |
EP (1) | EP1006326B1 (de) |
JP (1) | JP2000180050A (de) |
KR (1) | KR100660243B1 (de) |
CN (1) | CN1123754C (de) |
DE (2) | DE19855487A1 (de) |
DK (1) | DK1006326T3 (de) |
ES (1) | ES2219942T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1308680A1 (de) * | 2001-10-31 | 2003-05-07 | Linde AG | Verfahren und Vorrichtung zur Gewinnung von Krypton und/oder Xenon durch Tieftemperaturzerlegung von Luft |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10228111A1 (de) * | 2002-06-24 | 2004-01-15 | Linde Ag | Luftzerlegungsverfahren und -anlage mit Mischsäule und Krypton-Xenon-Gewinnung |
US6694775B1 (en) | 2002-12-12 | 2004-02-24 | Air Products And Chemicals, Inc. | Process and apparatus for the recovery of krypton and/or xenon |
DE102009014556A1 (de) | 2009-03-24 | 2010-09-30 | Linde Aktiengesellschaft | Verfahren zur Beheizung einer Trennkolonne |
CN101634514B (zh) * | 2009-08-13 | 2012-01-25 | 上海启元科技发展有限公司 | 全精馏制备纯氪和纯氙的方法 |
EP2312248A1 (de) | 2009-10-07 | 2011-04-20 | Linde Aktiengesellschaft | Verfahren und Vorrichtung Gewinnung von Drucksauerstoff und Krypton/Xenon |
CN101913580B (zh) * | 2010-07-16 | 2012-12-19 | 杭州杭氧股份有限公司 | 从液氧中提取惰性气体氪氙的方法与装置 |
CN102721262A (zh) * | 2012-07-04 | 2012-10-10 | 开封空分集团有限公司 | 粗氪氙的提取装置及利用该装置提取粗氪氙的工艺 |
CN103968641B (zh) * | 2014-05-19 | 2019-04-02 | 上海启元空分技术发展股份有限公司 | 一种控制氪氙精馏塔入塔气体流量的方法 |
EP2993432A1 (de) * | 2014-09-02 | 2016-03-09 | Linde Aktiengesellschaft | Verfahren zur tieftemperaturzerlegung von luft und luftzerlegungsanlage |
US11460246B2 (en) | 2019-12-18 | 2022-10-04 | Air Products And Chemicals, Inc. | Recovery of krypton and xenon from liquid oxygen |
CN117531333B (zh) * | 2024-01-08 | 2024-04-02 | 西安瑞恒测控设备有限公司 | 气相色谱仪在氪氙检测中的过滤系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3222879A (en) * | 1962-02-27 | 1965-12-14 | Stoklosinski Roman | Recovery of krypton and xenon from air separation plants |
WO1987006684A1 (en) * | 1986-05-02 | 1987-11-05 | The Boc Group Plc | Krypton separation |
DE4332870A1 (de) * | 1993-09-27 | 1995-03-30 | Linde Ag | Verfahren und Vorrichtung zur Gewinnung eines Krypton-/Xenon-Konzentrats durch Tieftemperaturzerlegung von Luft |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5122173A (en) * | 1991-02-05 | 1992-06-16 | Air Products And Chemicals, Inc. | Cryogenic production of krypton and xenon from air |
US5067976A (en) * | 1991-02-05 | 1991-11-26 | Air Products And Chemicals, Inc. | Cryogenic process for the production of an oxygen-free and methane-free, krypton/xenon product |
US5309719A (en) * | 1993-02-16 | 1994-05-10 | Air Products And Chemicals, Inc. | Process to produce a krypton/xenon enriched stream from a cryogenic nitrogen generator |
-
1998
- 1998-12-01 DE DE19855487A patent/DE19855487A1/de not_active Withdrawn
-
1999
- 1999-02-11 ES ES99102628T patent/ES2219942T3/es not_active Expired - Lifetime
- 1999-02-11 DE DE59909230T patent/DE59909230D1/de not_active Expired - Fee Related
- 1999-02-11 EP EP99102628A patent/EP1006326B1/de not_active Expired - Lifetime
- 1999-02-11 DK DK99102628T patent/DK1006326T3/da active
- 1999-11-29 JP JP11337425A patent/JP2000180050A/ja active Pending
- 1999-12-01 CN CN99125538A patent/CN1123754C/zh not_active Expired - Fee Related
- 1999-12-01 KR KR1019990054115A patent/KR100660243B1/ko not_active IP Right Cessation
- 1999-12-01 US US09/452,167 patent/US6301929B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3222879A (en) * | 1962-02-27 | 1965-12-14 | Stoklosinski Roman | Recovery of krypton and xenon from air separation plants |
WO1987006684A1 (en) * | 1986-05-02 | 1987-11-05 | The Boc Group Plc | Krypton separation |
DE4332870A1 (de) * | 1993-09-27 | 1995-03-30 | Linde Ag | Verfahren und Vorrichtung zur Gewinnung eines Krypton-/Xenon-Konzentrats durch Tieftemperaturzerlegung von Luft |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1308680A1 (de) * | 2001-10-31 | 2003-05-07 | Linde AG | Verfahren und Vorrichtung zur Gewinnung von Krypton und/oder Xenon durch Tieftemperaturzerlegung von Luft |
US6612129B2 (en) | 2001-10-31 | 2003-09-02 | Linde Aktiengesellschaft | Process and apparatus for producing krypton and/or xenon by low-temperature fractionation of air |
KR100917954B1 (ko) * | 2001-10-31 | 2009-09-21 | 린데 악티엔게젤샤프트 | 공기의 저온 분별에 의한 크립톤 및/또는 크세논 생성방법 및 장치 |
Also Published As
Publication number | Publication date |
---|---|
KR20000047816A (ko) | 2000-07-25 |
DE59909230D1 (de) | 2004-05-27 |
CN1255620A (zh) | 2000-06-07 |
JP2000180050A (ja) | 2000-06-30 |
CN1123754C (zh) | 2003-10-08 |
ES2219942T3 (es) | 2004-12-01 |
EP1006326B1 (de) | 2004-04-21 |
DK1006326T3 (da) | 2004-08-09 |
DE19855487A1 (de) | 2000-06-08 |
KR100660243B1 (ko) | 2006-12-20 |
US6301929B1 (en) | 2001-10-16 |
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