US20100115995A1 - Air separation process using cryogenic distillation - Google Patents

Air separation process using cryogenic distillation Download PDF

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Publication number
US20100115995A1
US20100115995A1 US11/575,683 US57568305A US2010115995A1 US 20100115995 A1 US20100115995 A1 US 20100115995A1 US 57568305 A US57568305 A US 57568305A US 2010115995 A1 US2010115995 A1 US 2010115995A1
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United States
Prior art keywords
column
less
air
oxygen
diameter
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.)
Abandoned
Application number
US11/575,683
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English (en)
Inventor
Anne-Maie Olivier Bruder
Patrick Le Bot
Richard Dubettier-Grenier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
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Filing date
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Application filed by LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CARREGA-GROS, ANNE-MARIE, DUBETTIER-GRENIER, RICHARD, LEBOT, PATRICK
Publication of US20100115995A1 publication Critical patent/US20100115995A1/en
Abandoned legal-status Critical Current

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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
    • F25J3/04763—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
    • F25J3/04406—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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • F25J3/04909—Structured packings
    • 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
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
    • 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
    • F25J2290/12—Particular process parameters like pressure, temperature, ratios
    • 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
    • F25J2290/20—Particular dimensions; Small scale or microdevices

Definitions

  • the present invention relates to an air separation process using cryogenic distillation.
  • it relates to air separation processes for the production of large quantities of oxygen with a content of greater than 90 mol % with a yield of greater than 90% in a unit comprising at least one column operating at low pressure and at least one column operating at high pressure, at least one column of which containing at least one section of structured packings of the cross-corrugated type.
  • U.S. Pat. No. 5,653,126 describes the use of cross-corrugated structured packings having a density of at least 500 m 2 /m 3 with a low HETP for the separation of air.
  • cross-corrugated packings have corrugations at 45° with the axis of the column in which they are installed.
  • the packings may or may not be perforated and are generally formed by folded metal foil strips.
  • the object of the present invention is to alleviate the problems of the prior art by allowing the column diameters to be reduced for a given oxygen production.
  • the yield is the percentage number of oxygen molecules in all the oxygen-rich products relative to the number of oxygen molecules in the feed air for the separation unit.
  • the capacity per unit area of the column is the ratio of the molar volume of gas sent into the column to the mean cross section of the column.
  • this is economically advantageous as even if the height of the columns is increased and the architecture is modified, the diameter reduction effect is predominant.
  • the drawback of the increased height can be resolved by placing the column sections at the desired height, side by side with fluid transfer pipes.
  • a fluid will be called a “product” if it is output from the air separation unit with the content of one of its constituents being:
  • the extraction efficiency of a constituent will be defined by the ratio of the molar quantity of the said constituent entering the separation unit via the feed fluids to the molar quantity of the same constituent leaving via the product(s), the content of this constituent being greater than or equal to those mentioned above.
  • Cross-corrugated structured packings with a density not exceeding 500 m 2 /m 3 , or even 400 m 2 /m 3 may be installed in the medium-pressure column and/or the low-pressure column of a double column, in the medium-pressure column and/or the low-pressure column and/or the intermediate-pressure column of a triple (Etienne) column, an argon column, a mixing column or any other type of air gas separation column.
  • FIG. 1 shows an air separation unit according to the invention.
  • a double column comprises a medium-measure column 1 operating at between 5 bar abs and 20 bar abs and a low-pressure column 3 operating at a pressure between 1.2 bar abs and 8 bar abs.
  • the low-pressure column is larger in diameter than the medium-pressure column, but it is possible in some cases for the medium-pressure column to be larger in diameter than the low pressure column.
  • the two columns are thermally coupled to each other by a reboiler/condensor 5 , for example of the bath type.
  • the low-pressure column 3 contains only sections of structured packings 2 having a density not exceeding 500 m 2 /m 3 , for example having a density of 400 m 2 /m 3 .
  • the medium-pressure column 1 contains only sections of structured packings 2 having a density close or identical to the above values.
  • a stream of cooled and purified air 7 is sent to the medium-pressure column 1 and oxygen-enriched and nitrogen-enriched liquid streams 9 , 11 are sent from the medium-pressure column to the low-pressure column after an expansion step.
  • gaseous nitrogen 15 is withdrawn with a nitrogen yield of greater than 85% (preferably greater than 90%).
  • the purity of the nitrogen is greater than 99 mol % nitrogen (preferably greater than 99.99 mol % nitrogen or even 99.999 mol % nitrogen).
  • a stream of waste nitrogen 17 is withdrawn from an upper level of the low-pressure column.
  • the diameter (in metres) of the low-pressure column is less than:
  • the cross section of the low-pressure column will therefore be less than:

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Fertilizers (AREA)
US11/575,683 2004-09-21 2005-08-10 Air separation process using cryogenic distillation Abandoned US20100115995A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0452099 2004-09-21
FR0452099A FR2875588B1 (fr) 2004-09-21 2004-09-21 Procede de separation d'air par distillation cryogenique
PCT/EP2005/053938 WO2006048341A1 (en) 2004-09-21 2005-08-10 Air separation process using cryogenic distillation

Publications (1)

Publication Number Publication Date
US20100115995A1 true US20100115995A1 (en) 2010-05-13

Family

ID=34950006

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/575,683 Abandoned US20100115995A1 (en) 2004-09-21 2005-08-10 Air separation process using cryogenic distillation

Country Status (10)

Country Link
US (1) US20100115995A1 (de)
EP (1) EP1797384B1 (de)
JP (1) JP2008513719A (de)
CN (1) CN100547327C (de)
AT (1) ATE437347T1 (de)
CA (1) CA2579450A1 (de)
DE (1) DE602005015603D1 (de)
FR (1) FR2875588B1 (de)
WO (1) WO2006048341A1 (de)
ZA (1) ZA200702344B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113654302B (zh) * 2021-08-12 2023-02-24 乔治洛德方法研究和开发液化空气有限公司 一种低温空气分离的装置和方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2057804A (en) * 1934-05-09 1936-10-20 Lee S Twomey Method of separating the constituents of air
US3236059A (en) * 1962-08-29 1966-02-22 Air Prod & Chem Separation of gaseous mixtures
US5224351A (en) * 1990-12-17 1993-07-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air distillating column with cross-undulating lining
FR2686405A1 (fr) * 1992-01-20 1993-07-23 Air Liquide Procede et application de separation d'air, et application d'une telle installation.
US5349827A (en) * 1992-06-17 1994-09-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for the construction of a cryogenic unit for the separation of gas, cryogenic unit, subassembly and transportable assembly for the construction of such a unit
US5396772A (en) * 1994-03-11 1995-03-14 The Boc Group, Inc. Atmospheric gas separation method
US5653126A (en) * 1994-09-19 1997-08-05 Hitachi, Ltd. Packing material and air separator
US6128921A (en) * 1998-02-06 2000-10-10 L'air Liquide Air distillation plant comprising a plurality of cryogenic distillation units of the same type
US6378332B1 (en) * 2000-09-07 2002-04-30 Praxair Technology, Inc. Packing with low contacting crimp pattern
US6427485B1 (en) * 1999-12-09 2002-08-06 L'ari Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Device and method for separating substances by cryogenic distillation
US6536232B2 (en) * 2000-09-19 2003-03-25 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for plant and separating air by cryogenic distillation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013373A1 (en) * 1989-09-12 1993-07-08 Ha Bao V Cryogenic air separation process and apparatus
DE4224068A1 (de) * 1992-03-20 1993-09-23 Linde Ag Verfahren zur tieftemperaturzerlegung von luft und luftzerlegungsanlage
DE69511217T2 (de) * 1994-11-25 1999-11-25 Fujikoki Mfg. Co. Ltd., Tokio/Tokyo Abflusspumpe
US5984282A (en) * 1998-01-20 1999-11-16 Air Products And Chemicals, Inc. Packed liquid-vapor contact column having at least one band of packing sheets surrounding a central core of packing sheets
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

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2057804A (en) * 1934-05-09 1936-10-20 Lee S Twomey Method of separating the constituents of air
US3236059A (en) * 1962-08-29 1966-02-22 Air Prod & Chem Separation of gaseous mixtures
US5224351A (en) * 1990-12-17 1993-07-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air distillating column with cross-undulating lining
FR2686405A1 (fr) * 1992-01-20 1993-07-23 Air Liquide Procede et application de separation d'air, et application d'une telle installation.
US5349827A (en) * 1992-06-17 1994-09-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for the construction of a cryogenic unit for the separation of gas, cryogenic unit, subassembly and transportable assembly for the construction of such a unit
US5396772A (en) * 1994-03-11 1995-03-14 The Boc Group, Inc. Atmospheric gas separation method
US5653126A (en) * 1994-09-19 1997-08-05 Hitachi, Ltd. Packing material and air separator
US6128921A (en) * 1998-02-06 2000-10-10 L'air Liquide Air distillation plant comprising a plurality of cryogenic distillation units of the same type
US6427485B1 (en) * 1999-12-09 2002-08-06 L'ari Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Device and method for separating substances by cryogenic distillation
US6378332B1 (en) * 2000-09-07 2002-04-30 Praxair Technology, Inc. Packing with low contacting crimp pattern
US6536232B2 (en) * 2000-09-19 2003-03-25 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for plant and separating air by cryogenic distillation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Robbins et al., "Liquid-Liquid Extraction Operations and Equipment", 1997 *
Translation of FR 2686405 A1 *

Also Published As

Publication number Publication date
ZA200702344B (en) 2008-08-27
EP1797384A1 (de) 2007-06-20
WO2006048341A1 (en) 2006-05-11
EP1797384B1 (de) 2009-07-22
CN100547327C (zh) 2009-10-07
FR2875588A1 (fr) 2006-03-24
JP2008513719A (ja) 2008-05-01
CA2579450A1 (en) 2006-05-11
FR2875588B1 (fr) 2007-04-27
CN101023309A (zh) 2007-08-22
ATE437347T1 (de) 2009-08-15
DE602005015603D1 (de) 2009-09-03

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AS Assignment

Owner name: L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CARREGA-GROS, ANNE-MARIE;LEBOT, PATRICK;DUBETTIER-GRENIER, RICHARD;REEL/FRAME:022691/0055

Effective date: 20070301

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION