RU2020127582A - METHOD AND INSTALLATION FOR OBTAINING CARBON MONOXIDE BY PARTIAL CONDENSATION - Google Patents

METHOD AND INSTALLATION FOR OBTAINING CARBON MONOXIDE BY PARTIAL CONDENSATION Download PDF

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RU2020127582A
RU2020127582A RU2020127582A RU2020127582A RU2020127582A RU 2020127582 A RU2020127582 A RU 2020127582A RU 2020127582 A RU2020127582 A RU 2020127582A RU 2020127582 A RU2020127582 A RU 2020127582A RU 2020127582 A RU2020127582 A RU 2020127582A
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column
heat exchanger
liquid
mixture
sent
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RU2020127582A
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RU2020127582A3 (en
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Антуан Эрнандес
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Л'Эр Ликид Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод
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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
    • F25J3/0228—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
    • F25J3/0233—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 CnHm with 1 carbon atom or more
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
    • 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
    • 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
    • F25J2200/40—Features relating to the provision of boil-up in the bottom of a 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/70—Refluxing the column with a condensed part of the feed stream, i.e. fractionator top is stripped or self-rectified
    • 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
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead 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
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/02—Internal refrigeration with liquid vaporising loop
    • 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/12—External refrigeration with liquid vaporising loop
    • 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
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/42—Quasi-closed internal or closed external nitrogen refrigeration cycle

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (14)

1. Способ разделения смеси водорода, метана и моноксида углерода (1, 5, 7) криогенной дистилляцией в системе колонн, содержащей первую колонну и вторую колонну, при этом в указанном способе:1. A method for separating a mixture of hydrogen, methane and carbon monoxide (1, 5, 7) by cryogenic distillation in a column system containing a first column and a second column, while in this method: i. смесь охлаждают в первом теплообменнике (3, 9), и по меньшей мере одну ее часть подвергают частичной конденсации в по меньшей мере одном втором теплообменнике (11, 13), который представляет собой кубовый ребойлер второй колонны (К1, К2) из системы колонн, и по меньшей мере одну часть жидкости (17, 67), полученной частичной конденсацией, или жидкость (23, 75), полученную из данной жидкости (67) посредством по меньшей мере одного этапа частичной конденсации, направляют к промежуточному уровню первой колонны (К1), при этом только данную по меньшей мере одну часть смеси и кубовую жидкость (21) из второй колонны подвергают теплообмену во втором теплообменнике, при этом испарившуюся кубовую жидкость направляют обратно в колонну, в которой она образуется;i. the mixture is cooled in the first heat exchanger (3, 9), and at least one part of it is subjected to partial condensation in at least one second heat exchanger (11, 13), which is a bottom reboiler of the second column (K1, K2) from the column system, and at least one part of the liquid (17, 67) obtained by partial condensation, or the liquid (23, 75) obtained from this liquid (67) through at least one stage of partial condensation, is sent to the intermediate level of the first column (K1) , while only this at least one part of the mixture and bottom liquid (21) from the second column are subjected to heat exchange in the second heat exchanger, while the evaporated bottom liquid is sent back to the column in which it is formed; ii. обогащенный водородом, верхний газ (39) отводят из первой колонны и подогревают в первом теплообменнике;ii. enriched in hydrogen, the top gas (39) is removed from the first column and heated in the first heat exchanger; iii. жидкость (25, 27, 29), обогащенную моноксидом углерода и метаном, отводят из нижней части первой колонны (К1), и ее направляют к по меньшей мере одному промежуточному уровню второй колонны (К2);iii. a liquid (25, 27, 29) enriched in carbon monoxide and methane is withdrawn from the bottom of the first column (K1) and directed to at least one intermediate level of the second column (K2); iv. жидкость (23), обогащенную метаном, отводят из нижней части второй колонны, и текучую среду, обогащенную моноксидом углерода (37), отводят из верхней части второй колонны; иiv. a liquid (23) enriched in methane is withdrawn from the bottom of the second column, and a fluid enriched in carbon monoxide (37) is withdrawn from the top of the second column; And v. производят охлаждение для поддержания низкотемпературного процесса посредством контура (V1, V2, 35, 45, 47, 49, 53) охлаждения.v. produce cooling to maintain a low temperature process through the circuit (V1, V2, 35, 45, 47, 49, 53) cooling. 2. Способ по п.1, в котором часть (77) охлажденной смеси направляют во второй теплообменник (13), который представляет собой ребойлер первой колонны (К1).2. The method according to claim 1, in which part (77) of the cooled mixture is sent to the second heat exchanger (13), which is the reboiler of the first column (K1). 3. Способ по п.1 или 2, в котором по меньшей мере одну часть охлажденной смеси направляют для охлаждения во второй теплообменник (11), который представляет собой ребойлер второй колонны (К2), и затем данную по меньшей мере одну часть охлажденной смеси направляют в третий теплообменник, который представляет собой ребойлер (13) первой колонны (К1).3. The method according to claim 1 or 2, in which at least one part of the cooled mixture is sent for cooling to the second heat exchanger (11), which is a reboiler of the second column (K2), and then this at least one part of the cooled mixture is sent into the third heat exchanger, which is the reboiler (13) of the first column (K1). 4. Способ по п.1 или 2, в котором по меньшей мере одну часть охлажденной смеси направляют для частичной конденсации во втором теплообменнике (11), который представляет собой ребойлер второй колонны (К2), для получения газа (77) и жидкости (17), затем газ направляют в третий теплообменник (13), который представляет собой ребойлер первой колонны (К1), и по меньшей мере одну часть жидкости, полученной посредством по меньшей мере частичной конденсации газа в третьем теплообменнике, направляют к промежуточной точке первой колонны.4. The method according to claim 1 or 2, in which at least one part of the cooled mixture is sent for partial condensation in the second heat exchanger (11), which is the reboiler of the second column (K2), to obtain gas (77) and liquid (17 ), then the gas is sent to the third heat exchanger (13), which is the reboiler of the first column (K1), and at least one part of the liquid obtained by at least partial condensation of the gas in the third heat exchanger is sent to the intermediate point of the first column. 5. Способ по одному из предшествующих пунктов, в котором конденсированную часть (61), полученную в результате по меньшей мере одного этапа частичной конденсации смеси, направляют в верхнюю часть первой колонны (К1) из системы колонн.5. The method according to one of the preceding claims, wherein the condensed portion (61) resulting from at least one stage of partial condensation of the mixture is sent to the top of the first column (K1) from the column system. 6. Способ по одному из предшествующих пунктов, в котором первая колонна (К1) имеет кубовый ребойлер (13) и не имеет верхнего конденсатора.6. Process according to one of the preceding claims, wherein the first column (K1) has a bottom reboiler (13) and no top condenser. 7. Способ по одному из предшествующих пунктов, в котором смесь (1) охлаждают в первом теплообменнике (3, 9) до ее промежуточной температуры, и затем смесь выходит из первого теплообменника перед ее направлением в ребойлер.7. The method according to one of the preceding claims, wherein the mixture (1) is cooled in the first heat exchanger (3, 9) to its intermediate temperature and then the mixture exits the first heat exchanger before being sent to the reboiler. 8. Способ по одному из предшествующих пунктов, в котором текучую среду (37), обогащенную моноксидом углерода, из верхней части второй колонны (К2) и/или обогащенный водородом, верхний газ (39) из первой колонны (К1) охлаждают в первом теплообменнике (3, 9) от холодного конца первого теплообменника.8. Process according to one of the preceding claims, wherein the carbon monoxide-enriched fluid (37) from the top of the second column (K2) and/or the hydrogen-rich top gas (39) from the first column (K1) is cooled in a first heat exchanger (3, 9) from the cold end of the first heat exchanger. 9. Установка для разделения смеси водорода, метана и моноксида углерода (1, 5, 7) криогенной дистилляцией, при этом указанная установка содержит систему колонн, содержащую первую колонну (К1) и вторую колонну (К2), первый теплообменник (3, 9), второй теплообменник (11, 13), средство для направления смеси, подлежащей охлаждению, в первый теплообменник, средство для направления охлажденной смеси, подлежащей частичной конденсации в по меньшей мере второй теплообменник, который представляет собой кубовый теплообменник второй колонны, средство для направления к промежуточному уровню первой колонны по меньшей мере одной части (75) жидкости, полученной посредством частичной конденсации, или жидкости, полученной из данной жидкости посредством по меньшей мере одного этапа частичной конденсации, при этом только смесь и кубовая жидкость из второй колонны подвергаются теплообмену во втором теплообменнике, средство для направления испарившейся кубовой жидкости обратно во вторую колонну, средство для отвода обогащенного водородом, верхнего газа (39) из первой колонны, средство для направления верхнего газа, подлежащего подогреву, в первый теплообменник, средство для отвода жидкости, обогащенной моноксидом углерода и метаном (25, 29), из нижней части первой колонны, средство для направления жидкости, обогащенной моноксидом углерода и метаном к по меньшей мере одному промежуточному уровню второй колонны, средство для отвода жидкости (23), обогащенной метаном, из нижней части второй колонны, средство для отвода текучей среды (37), обогащенной моноксидом углерода, из верхней части второй колонны, и контур (V1, V2, С, 35, 45, 47, 49, 53) охлаждения для обеспечения охлаждения для поддержания низкотемпературного процесса.9. Installation for separating a mixture of hydrogen, methane and carbon monoxide (1, 5, 7) by cryogenic distillation, while this installation contains a column system containing the first column (K1) and the second column (K2), the first heat exchanger (3, 9) , a second heat exchanger (11, 13), means for directing the mixture to be cooled to the first heat exchanger, means for directing the cooled mixture to be partially condensed to at least a second heat exchanger, which is a bottom heat exchanger of the second column, means for directing to an intermediate the level of the first column of at least one part (75) of the liquid obtained by partial condensation, or the liquid obtained from this liquid by at least one stage of partial condensation, while only the mixture and bottom liquid from the second column are subjected to heat exchange in the second heat exchanger, means for directing the evaporated bottom liquid back to the second column, means for means for diverting the hydrogen-rich, top gas (39) from the first column, means for directing the upper gas to be heated to the first heat exchanger, means for diverting liquid enriched in carbon monoxide and methane (25, 29) from the bottom of the first column, means for directing liquid enriched in carbon monoxide and methane to at least one intermediate level of the second column, means for withdrawing liquid (23) enriched in methane from the bottom of the second column, means for withdrawing fluid (37) enriched in carbon monoxide top of the second column, and a cooling circuit (V1, V2, C, 35, 45, 47, 49, 53) to provide cooling to maintain a low temperature process.
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