HK73796A - Process and apparatus for producing nitrogen from air - Google Patents

Process and apparatus for producing nitrogen from air Download PDF

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Publication number
HK73796A
HK73796A HK73796A HK73796A HK73796A HK 73796 A HK73796 A HK 73796A HK 73796 A HK73796 A HK 73796A HK 73796 A HK73796 A HK 73796A HK 73796 A HK73796 A HK 73796A
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HK
Hong Kong
Prior art keywords
stream
nitrogen
oxygen
heat exchanger
distillation column
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HK73796A
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English (en)
French (fr)
Inventor
E Parker Clayton
A Mostello Robert
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The Boc Group, Inc.
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23552107&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK73796(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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Publication of HK73796A publication Critical patent/HK73796A/en

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/02—Preparation 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
    • 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
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/04066—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
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    • 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
    • F25J3/04242—Cold end purification of the feed air
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    • 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
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    • 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
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    • 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
    • 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
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    • 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
    • F25J3/04363—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 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
    • F25J3/044—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
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    • 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
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas
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    • 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
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    • F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
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    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—Nitrogen
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    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
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  • Organic Chemistry (AREA)
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Claims (16)

1. Ein Verfahren zur Rückgewinnung eines im wesentlichen reinen Stickstoffprodukts bei Überatmosphärendruck aus Luft, mit den Schritten:
(a) Verdichtung von gasförmiger Zufuhrluft;
(b) Kühlung der verdichteten Luft in einem Wärmetauscher durch Wärmetausch mit angereicherten Sauerstoff- und Stickstoffproduktströmen;
(c) Einführung der gekühlten und verdichteten Luft in eine Zwischenstufe einer einzigen Destillationssäule;
(d) Trennung der Luft in der Säule in einen oben liegenden, im wesentlichen reinen gasförmigen Stickstoffteil und einen Sauerstoff angereicherten flüssigen unten liegenden Teil, und Herausziehen eines Stroms eines jeden Teils aus der Säule;
(e) Zuführung von im wesentlichen dem ganzen mitSauerstoff angereicherten flüssigen Unterstrom und einem Teil des gasförmigen Stickstoffoberstroms zu einem Kondensator und indirektes Wärmetauschen darin zwischen dem Unterstrom und dem Oberstrom, wobei Sauerstoff angereicherte Flüssigkeit gekocht wird, um einen mit Sauerstoff angereicherten Gasstrom zu bilden und gasförmigen Stickstoff zu kondensieren, um einen flüssigen Stickstoffstrom zu bilden;
(f) Rückführung von zumindest einem Hauptteil des sich ergebenden flüssigen Stickstoffstroms zu dem oberen Ende der Destillationssäule als Rückfluß;
(g) Verdichtung zumindest eines ersten Teils des mit Sauerstoff angereicherten Gasstroms und Rückführung des verdichteten ersten Teils des mit Sauerstoff angereicherten Gasstroms zu dem Boden der Destillationssäule, ohne die Zusammensetzung des Sauerstoff angereicherten Gases außerhalb der Destillationssäule wederstromaufwärts noch stromabwärts der Verdichtung des ersten Teils zu ändern, wodurch die Stickstoffproduktrückgewinnung aus der Luft erhöht wird;
(h) Erwärmung des Rests des gasförmigen Stickstoffoberstroms in dem Wärmetauscher durch den Wärmetausch mit der verdichteten Luft; und
(i) Rückgewinnung des erwärmten Stickstoffoberstroms als im wesentlichen reines Stickstoffprodukt aus dem Wärmetauscher.
2. Ein Verfahren nach Anspruch 1, das weiter umfaßt eine Expansion eines zweiten Teils des Sauerstoff angereicherten Gasstroms in einem Expansionsmittel, wodurch eine Arbeitsausgangsleistung erzeugt wird, um die Kühlung für das Verfahren zu schaffen.
3. Ein Verfahren nach Anspruch 2, das weiterhin umfaßt eine Erwärmung eines dritten Teils des Sauerstoff angereicherten Gasstroms in dem Wärmetauscher durch Wärmetausch mit der verdichteten Luft stromaufwärts der Verbindung mit dem zweiten Teil und Expansion der Verbindung.
4. Ein Verfahren nach Anspruch 2 oder Anspruch 3, worin nur ein Teil des zweiten Teils expandiert wird, während der Rest des zweiten Teils an dem Expansionsmittel vorbeiströmt.
5. Ein Verfahren nach einem der vorhergehenden Ansprüche, worin der erste Teil des Sauerstoff angereicherten Gasstroms von Schritt (g) seine Verdichtung bei im wesentlichen bei Umgebungstemperatur beginnt.
6. Ein Verfahren nach einem der Ansprüche 1 bis 4, worin der erste Teil des Sauerstoff angereicherten Gasstroms von Schritt (g) seine Verdichtung etwa bei einer Temperatur der Destillationssäule beginnt.
7. Ein Verfahren nach Anspruch 6, das weiter umfaßt die Verwendung eines Teils der Arbeitsausgangsleistung, die von dem Expansionsmittel gewonnen wird, um den ersten Teil des Sauerstoff angereicherten Gasstroms zu verdichten, derzu dem Boden der Destillationssäule zurückgeführt wird.
8. Ein Verfahren nach Anspruch 6 oder Anspruch 7, das weiter umfaßt die Beseitigung eines Teils der Arbeitsausgangsleistung aus dem Expansionsmittel aus dem Verfahren.
9. Ein Verfahren nach Anspruch 8, worin der beseitigte Teil der Arbeitsausgangsieistung an die Umgebung als Wärme oder Arbeit abgegeben wird.
10. Ein Verfahren nach Anspruch 6, worin die gesamte Arbeitsausgangsleistung verwendet wird, um den ersten Teil des Sauerstoff angereicherten Gasstroms zu verdichten, der zu dem Boden der Destillationssäule zurückgeführt wird, und das weiter umfaßt die Zuführung von Kühlung zu dem Verfahren von einer externen Quelle.
11. Ein Verfahren nach Anspruch 10, worin der Schritt der Zuführung von Kühlung zu dem Verfahren die Zuführung von flüssigem Stickstoff zu der Destillationssäule umfaßt.
12. Gerät zur Erzeugung eines Stickstoffprodukts aus Luft mit:
(a) einem ersten Verdichter zur Erhöhung des Drucks der gasförmigen Zufuhrluft;
(b) einem Wärmetauscher zum Kühlen der Hochdruckluft mit Stickstoff und Sauerstoff angereicherten Produkten aus destillierter Zufuhrluft;
(c) einer Destillationssäule zur Trennung der gekühlten Luft in einen im wesentlichen reinen gasförmigen oben liegenden Stickstoffteil und einen Sauerstoff angereicherten flüssigen unten liegenden Teil, die einen Auslaß für den Stickstoff hat, der mit dem Wärmetauscher in Verbindung steht;
(d) einem Kondensator, um zumindest teilweise einen Strom des gasförmigen oben liegenden Stickstoffs zu kondensieren, um einen flüssigen Stickstoffstrom durch indirekten Wärmetausch mit einem Strom des Sauerstoff angereicherten flüssigen Bodenteils zu bilden, um einen Sauerstoff angereicherten Gasstrom zu bilden;
(e) einem ersten Rückführmittel zum Zurückführen eines Hauptteils des flüssigen Stickstoffstroms von dem Kondensator zu der Destillationssäule als Rückfluß;
(f) einem zweiten Verdichter zur Erhöhung des Drucks zumindest eines Teils des Sauerstoff angereicherten Gasstroms, wobei derzweite Verdichter so positioniert ist, daßer im Gebrauch Sauerstoff angereichertes Gas mit einer kryogenischen Temperatur enthält; und
(g) einem zweiten Rückführmittel zum Zurückführen des Sauerstoff angereicherten Gasstroms erhöhten Drucks zu dem Boden der Destillationssäule, wodurch die Stickstoffproduktrückgewinnung erhöht wird; wobei keine Mittel zwischen der Destillationssäule und dem Einlaß des zweiten Verdichters oder zwischen dem Auslaß des zweiten Verdichters und der Destillationssäule zurÄnderung der Zusammensetzung des Sauerstoff angereicherten Gases vorgesehen sind; worin im Gebrauch das Stickstoffprodukt von dem Wärmetauscher zurückgewonnen wird.
13. Gerät nach Anspruch 12, in dem der zweite Verdichter mit einer Turboexpansionsvorrichtung zur Erzeugung einer Kühlung gekoppelt ist.
14. Gerät nach Anspruch 13, in dem der zweite Verdichter mit der Turboexpansionsvorrichtung durch eine dissipative Bremse gekoppelt ist.
15. Gerät nach einem der ansprüche 13 oder 14, in dem der zweite Verdichter an einer Stelle in dem Gerät liegt, so daß er im Betrieb Sauerstoff angereichertes Gas mit einer kryogenischen Temperatur erhält.
16. Gerät nach einem der Anspruch 15, in dem der zweite Verdichter stromaufwärts des kalten Endes des Wärmetauschers und stromabwärts des Auslasses des Kondensators für den sauerstoffreichen Gasstrom angeordnet ist.
HK73796A 1989-08-11 1996-04-25 Process and apparatus for producing nitrogen from air HK73796A (en)

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Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9025846D0 (en) * 1990-11-28 1991-01-09 Boc Group Plc Treatment of gas
US5165245A (en) * 1991-05-14 1992-11-24 Air Products And Chemicals, Inc. Elevated pressure air separation cycles with liquid production
US5170630A (en) * 1991-06-24 1992-12-15 The Boc Group, Inc. Process and apparatus for producing nitrogen of ultra-high purity
DE4206923A1 (de) * 1992-03-05 1993-09-09 Linde Ag Verfahren und vorrichtung zur zerlegung eines gasgemisches
US5363657A (en) * 1993-05-13 1994-11-15 The Boc Group, Inc. Single column process and apparatus for producing oxygen at above-atmospheric pressure
US5385024A (en) * 1993-09-29 1995-01-31 Praxair Technology, Inc. Cryogenic rectification system with improved recovery
US5711167A (en) * 1995-03-02 1998-01-27 Air Liquide Process & Construction High efficiency nitrogen generator
US5697229A (en) * 1996-08-07 1997-12-16 Air Products And Chemicals, Inc. Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone
US5682762A (en) * 1996-10-01 1997-11-04 Air Products And Chemicals, Inc. Process to produce high pressure nitrogen using a high pressure column and one or more lower pressure columns
US5711166A (en) * 1997-01-22 1998-01-27 The Boc Group, Inc. Air separation method and apparatus
US5966967A (en) * 1998-01-22 1999-10-19 Air Products And Chemicals, Inc. Efficient process to produce oxygen
US5901576A (en) * 1998-01-22 1999-05-11 Air Products And Chemicals, Inc. Single expander and a cold compressor process to produce oxygen
US6009723A (en) * 1998-01-22 2000-01-04 Air Products And Chemicals, Inc. Elevated pressure air separation process with use of waste expansion for compression of a process stream
US6125656A (en) * 1999-11-03 2000-10-03 Praxair Technology, Inc. Cryogenic rectification method for producing nitrogen gas and liquid nitrogen
US6568209B1 (en) 2002-09-06 2003-05-27 Praxair Technology, Inc. Cryogenic air separation system with dual section main heat exchanger
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
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
US8429933B2 (en) * 2007-11-14 2013-04-30 Praxair Technology, Inc. Method for varying liquid production in an air separation plant with use of a variable speed turboexpander
DE102008064117A1 (de) 2008-12-19 2009-05-28 Linde Ag Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
EP2236964B1 (de) 2009-03-24 2019-11-20 Linde AG Verfahren und Vorrichtung zur Tieftemperatur-Luftzerlegung
EP2789958A1 (de) 2013-04-10 2014-10-15 Linde Aktiengesellschaft Verfahren zur Tieftemperaturzerlegung von Luft und Luftzerlegungsanlage
CN103233716A (zh) * 2013-05-17 2013-08-07 徐毅 一种移动式煤层气开采装置
EP3059536A1 (de) 2015-02-19 2016-08-24 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Gewinnung eines Druckstickstoffprodukts
EP3290843A3 (de) 2016-07-12 2018-06-13 Linde Aktiengesellschaft Verfahren und vorrichtung zur erzeugung von druckstickstoff und flüssigstickstoff durch tieftemperaturzerlegung von luft
TWI627156B (zh) * 2017-02-17 2018-06-21 國立清華大學 二氯丙醇的蒸氣再壓縮式製造裝置及製造方法
US11137205B2 (en) * 2018-12-21 2021-10-05 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for eliminating heat bumps following regeneration of adsorbers in an air separation unit
KR20220151167A (ko) * 2020-03-10 2022-11-14 크라이오스타 에스아에스 극저온 공기 분리 방법 및 공기 분리 유닛
FR3119884B1 (fr) * 2021-02-18 2022-12-30 Air Liquide Procédé de séparation d’air par distillation cryogénique
JP7833841B2 (ja) * 2022-04-15 2026-03-23 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 窒素発生装置および窒素発生方法
EP4428474A1 (de) 2023-03-08 2024-09-11 Linde GmbH Verfahren und anlage zur tieftemperaturzerlegung von luft
EP4477980A1 (de) 2023-06-15 2024-12-18 Linde GmbH Verfahren und vorrichtung zur herstellung von luftprodukten aus einer sauerstofffraktion

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203193A (en) * 1963-02-06 1965-08-31 Petrocarbon Dev Ltd Production of nitrogen
US3217502A (en) * 1963-04-22 1965-11-16 Hydrocarbon Research Inc Liquefaction of air
GB1463075A (en) * 1973-04-13 1977-02-02 Cryoplants Ltd Air separation
IT1034544B (it) * 1975-03-26 1979-10-10 Siad Procedimento ed impianto per il frazionamento dell aria con colon na a semplice rettifica
JPS5596388U (de) * 1978-12-27 1980-07-04
US4400188A (en) * 1981-10-27 1983-08-23 Air Products And Chemicals, Inc. Nitrogen generator cycle
US4566887A (en) * 1982-09-15 1986-01-28 Costain Petrocarbon Limited Production of pure nitrogen
JPS6142070U (ja) * 1984-08-23 1986-03-18 古河電気工業株式会社 電力ケーブル接続部用成形ユニット
US4595405A (en) * 1984-12-21 1986-06-17 Air Products And Chemicals, Inc. Process for the generation of gaseous and/or liquid nitrogen
JPH0633934B2 (ja) * 1985-04-02 1994-05-02 大同ほくさん株式会社 空気分離装置
JPH0129505Y2 (de) * 1985-04-24 1989-09-07
JPS6237675A (ja) * 1985-08-12 1987-02-18 株式会社神戸製鋼所 窒素発生装置
DE3610973A1 (de) * 1986-04-02 1987-10-08 Linde Ag Verfahren und vorrichtung zur erzeugung von stickstoff
US4715873A (en) * 1986-04-24 1987-12-29 Air Products And Chemicals, Inc. Liquefied gases using an air recycle liquefier
JPS63197868A (ja) * 1987-02-12 1988-08-16 株式会社日立製作所 タ−ビン・コンプレツサ−を用いた窒素発生装置
JP2755953B2 (ja) * 1988-05-19 1998-05-25 テイサン株式会社 窒素ガス製造方法
US4867773A (en) * 1988-10-06 1989-09-19 Air Products And Chemicals, Inc. Cryogenic process for nitrogen production with oxygen-enriched recycle

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CA2021444C (en) 1993-09-14
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EP0412793B2 (de) 2001-07-11
EP0412793B1 (de) 1994-09-28
ZA905571B (en) 1991-09-25
US4966002A (en) 1990-10-30
ATE112383T1 (de) 1994-10-15
PH26889A (en) 1992-11-16
JPH0794953B2 (ja) 1995-10-11
KR0149174B1 (ko) 1998-10-15
CN1050605A (zh) 1991-04-10
DD296468A5 (de) 1991-12-05
KR910004464A (ko) 1991-03-28
DE69012923D1 (de) 1994-11-03
CA2021444A1 (en) 1991-02-12
DE69012923T3 (de) 2001-11-15
AU627050B2 (en) 1992-08-13
CN1019691B (zh) 1992-12-30
EP0412793A1 (de) 1991-02-13
DE69012923T2 (de) 1995-02-02
HU209204B (en) 1994-03-28
JPH03137484A (ja) 1991-06-12

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