CA2197529A1 - Process and plant for producing carbon monoxide - Google Patents

Process and plant for producing carbon monoxide

Info

Publication number
CA2197529A1
CA2197529A1 CA002197529A CA2197529A CA2197529A1 CA 2197529 A1 CA2197529 A1 CA 2197529A1 CA 002197529 A CA002197529 A CA 002197529A CA 2197529 A CA2197529 A CA 2197529A CA 2197529 A1 CA2197529 A1 CA 2197529A1
Authority
CA
Canada
Prior art keywords
methane
synthesis gas
plant
permeate
gas
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
CA002197529A
Other languages
French (fr)
Inventor
Jean Billy
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 pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Publication of CA2197529A1 publication Critical patent/CA2197529A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/40—Carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/506—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification at low temperatures
    • 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
    • F25J3/0204—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 characterised by the feed stream
    • F25J3/0223—H2/CO mixtures, i.e. synthesis gas; Water gas or shifted synthesis gas
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0252—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 characterised by the separated product stream separation of hydrogen
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0261—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 characterised by the separated product stream separation of carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/046—Purification by cryogenic separation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/047—Composition of the impurity the impurity being carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0475—Composition of the impurity the impurity being carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/048—Composition of the impurity the impurity being an organic compound
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/80—Processes or apparatus using other separation and/or other processing means using membrane, i.e. including a permeation step
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/82—Processes or apparatus using other separation and/or other processing means using a reactor with combustion or catalytic reaction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/04—Mixing or blending of fluids with the feed stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Industrial Gases (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

In a process for producing carbon monoxide, a synthesis gas generated from a feed fluid is separated by a cryogenic distillation step. A fraction enriched in residual methane is recycled to the feed fluid.

Description

i~ 2197529 The object of the present invention is to - reduce further the specific hydrocarbon consumption per mole of CO produced by adding a processing step making it possible to recover and recycle the residual methane contained in the hydrogen which is co-produced.
To this end, the subject of the invention is a process for producing carbon monoxide (CO) by genera-ting a synthesis gas from a feed fluid then separating this gas, characterized in that at least a part of a - lO fraction enriched in residual methane is recycled to the feed fluid.
A further subject of th.e invention is a plant for producing carbon monoxide (CO), of the type com-prising an apparatus for generating a synthesis gas containing CO, and an apparatus for separating this gas, and means for returning a part of the fraction, enriched in residual methane, output by the separation apparatus to the input of the apparatus for generating the synthesis gas.
The methane washing process produces a methane-saturated (mole fraction between 1~ and 2~) hydrogen fraction available at the pressure of the synthesis gas. This quantity of methane may, depending on the method used for generating the synthesis gas, represent (expressed in terms of carbon atoms) between 1~ and 10 of the quantity of carbon contained in the carbon mon-oxide production.
The object of the present invention is to sepa~
rate this methane fraction from the hydrogen which car-ries it using the permeation process. The methane-rich permeation residue can be recycled into the hydrocarbon batch, and the permeate is methane-depleted hydrogen gas available at low pressure.
The invention is particularly beneficial in the case ol a unit which only produces carbon monoxide, in which the hydrogen created as a byproduct is conse-quently used as fuel. .
An illustrative embodiment of the invention will now be described with reference to the appended - 2 1 ~7529 drawing, in which the single figure schematically rep-resents a plant according to the invention.
The plant represented in the drawing comprises an apparatus 1 for generating the synthesis gas by catalytic cracking, an amine-washing apparatus 2 and an apparatus 3 for cryogenic separation by methane washing. The natural gas constituting the feed fluid is sent to the apparatus 1 for generating the synthesis gas. The synthesis gas is then purified by an amine-washing step in the apparatus 2 via the conduit 4. Thecarbon dioxide thus separated is recycled via the con-duit 6 to the input of the apparatus 1 for generating the synthesis gas. After this decarbonation in the apparatus 2, the purified synthesis gas is separated by one or more cryogenic distillation steps in the separation apparatus 3. The flash gas produced is recy-cled to the purified synthesis gas via the conduit 8, and a first methane flow is recycled via the conduit 10 to the input of the apparatus for generating the syn-thesis gas. The main product of the plant consists ofthe CO from the conduit 12. A mixture of hydrogen and methane output by the washing column is sent via the conduit 14 to the permeation apparatus 16. The permeate of the apparatus consists of a methane-depleted flow 18, and the non-permeate consists of a methane-enriched flow. This non-permeate, or a part of this non-permeate, is recycled via the conduit 20 to the input of the apparatus 1 for generating the synthesis gas.

Claims (11)

1. Process for producing carbon monoxide (CO) by generating a synthesis gas from a feed fluid then separating this gas, characterized in that at least a part of a fraction enriched in residual methane is recycled to the feed fluid.
2. Process according to claim 1, in which the methane-enriched residue is produced by a permeation step.
3. Process according to claim 1, in which the permeation step separates a gas mixture comprising hydrogen and methane.
4. Process according to claim 3, in which the majority or all of the said fraction constituting the non-permeate of the permeation step is recycled.
5. Process according to claim 3, in which the pressure of the permeate of the permeation step is adjusted in order to control the composition of the said permeate.
6. Process according to any preceding claim wherein said synthesis gas is separated by cryogenic distillation.
7. Plant for producing carbon monoxide (CO), of the type comprising an apparatus (1) for generating a synthesis gas containing CO, and an apparatus (3) for separating this gas, and means for returning a part of the fraction, enriched in residual methane, output by the separation apparatus to the input of the apparatus for generating the synthesis gas.
8. Plant according to claim 7, in which a permeation apparatus produces the fraction enriched in residual methane, from a flow output by the purification apparatus.
9. Plant according to claim 8, in which the flow output by the purification apparatus contains hydrogen and methane.
10. Plant according to claim 9, comprising means (19) for adjusting the pressure of the permeate of the permeation step.
11. Plant according to any of claims 7 to 10 wherein said apparatus for separating said synthesis gas is an apparatus for cryogenic separation.
CA002197529A 1996-02-16 1997-02-13 Process and plant for producing carbon monoxide Abandoned CA2197529A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR96/01962 1996-02-16
FR9601962A FR2745000A1 (en) 1996-02-16 1996-02-16 PROCESS AND PLANT FOR PRODUCING CARBON MONOXIDE

Publications (1)

Publication Number Publication Date
CA2197529A1 true CA2197529A1 (en) 1997-08-17

Family

ID=9489296

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002197529A Abandoned CA2197529A1 (en) 1996-02-16 1997-02-13 Process and plant for producing carbon monoxide

Country Status (5)

Country Link
EP (1) EP0790212A1 (en)
KR (1) KR970061779A (en)
CN (1) CN1172069A (en)
CA (1) CA2197529A1 (en)
FR (1) FR2745000A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2838424B1 (en) 2002-04-15 2004-05-28 Air Liquide PROCESS AND PLANT FOR SEPARATING A MIXTURE OF HYDROGEN AND CARBON MONOXIDE
US7066984B2 (en) * 2003-09-25 2006-06-27 The Boc Group, Inc. High recovery carbon monoxide production process
FR2861165B1 (en) * 2003-10-20 2005-12-16 Air Liquide PROCESS AND APPARATUS FOR THE PRODUCTION OF CARBON MONOXIDE AND / OR HYDROGEN AND / OR A MIXTURE OF HYDROGEN AND CARBON MONOXIDE BY CRYOGENIC DISTILLATION
EP1890961B1 (en) * 2005-06-06 2017-02-22 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method for simultaneously producing hydrogen and carbon monoxide
DE102006006281A1 (en) * 2006-02-10 2007-08-16 Linde Ag Process for producing carbon monoxide from synthesis gas
WO2014082702A1 (en) 2012-11-29 2014-06-05 Linde Aktiengesellschaft Method for operating a steam reforming system
DE102014003392A1 (en) 2014-03-06 2015-09-10 Linde Aktiengesellschaft Method for operating a steam reforming plant
EP3150549A1 (en) * 2015-10-01 2017-04-05 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method and system for the production of synthesis gas with variable composition
FR3052159B1 (en) 2016-06-06 2018-05-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude PROCESS AND PLANT FOR THE COMBINED PRODUCTION OF A MIXTURE OF HYDROGEN AND NITROGEN AND CARBON MONOXIDE BY CRYOGENIC DISTILLATION AND WASH

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943236A (en) * 1971-04-02 1976-03-09 E. I. Du Pont De Nemours And Company Reforming process for carbon monoxide
US4836833A (en) * 1988-02-17 1989-06-06 Air Products And Chemicals, Inc. Production and recovery of hydrogen and carbon monoxide
FR2636250B1 (en) * 1988-09-12 1992-01-17 Air Liquide PROCESS AND PLANT FOR RECOVERING HYDROGEN AND CARBON MONOXIDE
US5073356A (en) * 1990-09-20 1991-12-17 Air Products And Chemicals, Inc. Integrated processes for the production of carbon monoxide
DE4236263A1 (en) * 1992-10-27 1994-04-28 Linde Ag Process for obtaining a high-purity hydrogen and a high-purity carbon monoxide stream
US5435836A (en) * 1993-12-23 1995-07-25 Air Products And Chemicals, Inc. Hydrogen recovery by adsorbent membranes
FR2718428B1 (en) * 1994-04-11 1997-10-10 Air Liquide Process and installation for the production of carbon monoxide.

Also Published As

Publication number Publication date
EP0790212A1 (en) 1997-08-20
CN1172069A (en) 1998-02-04
FR2745000A1 (en) 1997-08-22
KR970061779A (en) 1997-09-12

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