CA2800736A1 - Method and apparatus for producing liquid carbon dioxide - Google Patents

Method and apparatus for producing liquid carbon dioxide Download PDF

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Publication number
CA2800736A1
CA2800736A1 CA2800736A CA2800736A CA2800736A1 CA 2800736 A1 CA2800736 A1 CA 2800736A1 CA 2800736 A CA2800736 A CA 2800736A CA 2800736 A CA2800736 A CA 2800736A CA 2800736 A1 CA2800736 A1 CA 2800736A1
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Prior art keywords
carbon dioxide
compression
rich
gas
cooling
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CA2800736A
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French (fr)
Inventor
Alain Briglia
Alain Guillard
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Publication of CA2800736A1 publication Critical patent/CA2800736A1/en
Abandoned legal-status Critical Current

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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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0027—Oxides of carbon, e.g. CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
    • F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/008—Hydrocarbons
    • F25J1/0087—Propane; Propylene
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/0095—Oxides of carbon, e.g. CO2
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
    • F25J1/0204—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR cycle
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0237—Heat exchange integration integrating refrigeration provided for liquefaction and purification/treatment of the gas to be liquefied, e.g. heavy hydrocarbon removal from natural gas
    • F25J1/0238—Purification or treatment step is integrated within one refrigeration cycle only, i.e. the same or single refrigeration cycle provides feed gas cooling (if present) and overhead gas cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/202—Alcohols or their derivatives
    • B01D2252/2021—Methanol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/22—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • 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
    • F25J2205/50—Processes or apparatus using other separation and/or other processing means using absorption, i.e. with selective solvents or lean oil, heavier CnHm and including generally a regeneration step for the solvent or lean oil
    • 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
    • F25J2210/70—Flue or combustion exhaust 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Abrégé Un appareil de production d'un liquide riche en dioxyde de carbone comprend une unité de séparation (10) comprenant une colonne de lavage physique avec un solvant et des moyens pour refroidir un fluide de l'unité de séparation, et une unité de compression et de liquéfaction (12) d'un gaz riche en dioxyde de carbone (4), dérivé de l'unité de séparation comprenant des moyens pour refroidir le gaz en amont et/ou en aval de la compression, un même cycle de réfrigération, utilisant du dioxyde de carbone comme fluide frigorigène, étant adapté pour fournir des frigories aux moyens pour refroidir le fluide de l'unité de séparation et aux moyens pour refroidir le gaz en amont et/ou en aval de la compression et des moyens pour envoyer une partie du liquide de l'unité de liquéfaction au cycle de réfrigération. Figure 2Abstract An apparatus for producing a liquid rich in carbon dioxide comprises a separation unit (10) comprising a physical washing column with a solvent and means for cooling a fluid of the separation unit, and a compression unit. and liquefaction (12) of a gas rich in carbon dioxide (4), derived from the separation unit comprising means for cooling the gas upstream and / or downstream of the compression, a same refrigeration cycle, using carbon dioxide as refrigerant, being adapted to supply frigories to the means for cooling the fluid of the separation unit and to the means for cooling the gas upstream and / or downstream of the compression and means for sending a part of the liquid from the liquefaction unit to the refrigeration cycle. Figure 2

Description

Procédé et appareil de production de dioxyde de carbone liquide La présente invention s'applique à un procédé et à un appareil de production d'un liquide riche en dioxyde de carbone. En particulier elle s'applique aux procédés de séparation et purification de gaz basés sur le principe de l'absorption physique qui nécessitent de fonctionner à des températures inférieures à 0 C tel que le Rectisol ou le Selexol sur lesquels le dioxyde de carbone doit être produit soit sous forme liquide, soit io sous forme comprimé à des fins tels que la séquestration, l'EOR (Enhanced Oil Recovery), ou toute autre application dédiée à la réduction des émissions de dioxyde de carbone.
Dans une unité de séparation et purification de gaz basé sur le principe de l'absorption physique qui nécessite de fonctionner à des températures inférieures à 0 C tel que le Rectisol ou le Selexol , il est nécessaire d'apporter des quantités importantes de froid afin que le procédé puisse fonctionner de façon efficace. Communément ce froid est apporté par des groupes frigorifiques fonctionnant sur des fluides externes au procédé tel que par exemple de l'ammoniac ou du propylène.
Dans le cadre de réduction des émissions de dioxyde de carbone par des procédés de précombustion, le dioxyde de carbone séparé, doit être produit soit sous forme liquide afin d'être transporté par route, voie fluviale ou maritime, soit sous forme comprimée afin d'être transporté par canalisation. Ces procédés utilisent généralement un compresseur fonctionnant avec le fluide à
liquéfier (dioxyde de carbone) pour assurer le bilan frigorifique nécessaire à
la production de dioxyde de carbone sous forme liquide, ou comprimé
La Figure 1 illustre un appareil selon l'art antérieur. Une unité de séparation et purification de gaz de type Rectisol 10 sépare un gaz à
traiter contenant du dioyxde de carbone 1 pour produire un gaz épuré 2 et un gaz 3o riche en dioxyde de carbone. L'unité de séparation 10 est refroidie au moyen d'un groupe frigorifique externe 11 utilisant un fluide frigorigène 3,3'. Le dioxyde de carbone est liquéfié dans un liquéfacteur 12 pour produire du dioxyde de carbone sous forme liquide 5. Method and apparatus for producing liquid carbon dioxide The present invention applies to a method and apparatus for production of a liquid rich in carbon dioxide. In particular she applies to gas separation and purification processes based on the principle of physical absorption that require functioning at temperatures below 0 C such as Rectisol or Selexol on carbon dioxide is to be produced either in liquid form or in tablet form for purposes such as sequestration, EOR (Enhanced Oil Recovery), or any other application dedicated to the reduction of carbon dioxide.
In a gas separation and purification unit based on the principle physical absorption that requires operating at temperatures below 0 C such as Rectisol or Selexol, it is necessary to bring in significant amounts of cold so that the process can function effectively. Commonly this cold is brought by refrigerating units operating on fluids external to the process as for example ammonia or propylene.
In the context of reducing carbon dioxide emissions by precombustion processes, separated carbon dioxide, must be produced in liquid form for the purpose of being transported by road, inland waterway or maritime, in compressed form to be transported by pipeline. These processes generally use a compressor operating with the fluid to liquefied (carbon dioxide) to ensure the refrigeration balance required for the production of carbon dioxide in liquid form, or compressed Figure 1 illustrates an apparatus according to the prior art. A unit of separation and purification of gas type Rectisol 10 separates a gas to treat containing carbon dioxide 1 to produce a purified gas 2 and a gas 3o rich in carbon dioxide. The separation unit 10 is cooled to way an external refrigeration unit 11 using a refrigerant 3,3 '. The dioxide of carbon is liquefied in a liquefier 12 to produce carbon dioxide.
carbon in liquid form 5.

2 Selon un objet de l'invention, il est prévu un procédé de production d'un liquide riche en dioxyde de carbone comme produit final dans lequel :
i) on sépare un gaz d'alimentation comprenant du dioxyde de carbone par lavage physique avec un solvant à une température inférieure à 0 C
ii) on refroidit le solvant nécessaire au lavage physique de l'étape i) iii) on produit un gaz riche en dioxyde de carbone par séparation selon l'étape i), on le comprime et on le liquéfie iv) on refroidit le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression de l'étape iii) et v) un même cycle de réfrigération, utilisant du dioxyde de carbone comme fluide frigorigène, apporte les frigories pour le refroidissement de l'étape iv) et pour un refroidissement nécessaire à l'étape i), au moins une partie du dioxyde de carbone utilisé comme fluide frigorigène provenant de la liquéfaction de l'étape iii).
Selon d'autres aspects facultatifs - le même cycle de réfrigération sert à refroidir le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression - le même cycle de réfrigération sert à refroidir le solvant en amont du lavage ;
- le solvant est le méthanol , - on liquéfie le gaz riche en dioxyde de carbone après la compression de l'étape iii).
Selon un autre objet de l'invention, il est prévu un appareil de production d'un liquide riche en dioxyde de carbone comme produit final comprenant i) une unité de séparation comprenant une colonne de lavage physique avec un solvant et des moyens pour refroidir un fluide de l'unité de séparation et ii) une unité de compression et de liquéfaction d'un gaz riche en dioxyde de carbone, dérivé de l'unité de séparation pour produire du dioxyde de carbone liquide comme produit final, l'unité de compression et de liquéfaction comprenant des moyens pour refroidir le gaz en amont et/ou en aval de la compression, iii) un même cycle de réfrigération, utilisant du dioxyde de carbone comme fluide frigorigène, étant adapté pour fournir des frigories aux moyens 2 According to one object of the invention, there is provided a method for producing a a carbon dioxide rich liquid as the final product in which:
i) separating a feed gas comprising carbon dioxide by physical washing with a solvent at a temperature below 0 C
ii) cooling the solvent necessary for the physical washing of step i) iii) a gas rich in carbon dioxide is produced by separation according to step i), it is compressed and liquefied iv) the carbon dioxide-rich gas is cooled upstream and / or downstream of the compression of step iii) and v) the same refrigeration cycle, using carbon dioxide as a refrigerant, brings frigories for the cooling of step (iv) and for necessary cooling in step (i), at least part of the carbon dioxide used as a refrigerant from the liquefaction of step iii).
According to other optional aspects - the same refrigeration cycle is used to cool the dioxide-rich gas of carbon upstream and / or downstream of compression the same refrigeration cycle serves to cool the solvent upstream of the washing ;
the solvent is methanol, - the gas rich in carbon dioxide is liquefied after compression of step iii).
According to another object of the invention, there is provided a production apparatus a carbon dioxide-rich liquid as a final product comprising i) a separation unit comprising a physical washing column with a solvent and means for cooling a fluid of the unit of separation and ii) a unit for compressing and liquefying a gas rich in carbon dioxide, derived from the separation unit to produce dioxide of liquid carbon as the final product, the compression and liquefaction unit comprising means for cooling the gas upstream and / or downstream of the compression, iii) the same refrigeration cycle, using carbon dioxide as a refrigerant, being adapted to provide frigories to the means

3 pour refroidir le fluide de l'unité de séparation et aux moyens pour refroidir le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression et iv) des moyens pour envoyer une partie du dioxyde de carbone liquide de l'unité de liquéfaction au cycle de réfrigération.
Eventuellement l'appareil comprend des moyens pour refroidir le solvant en amont du lavage au moyen du cycle de réfrigération.
L'invention consiste à utiliser un même cycle de réfrigération apportant les frigories pour un refroidissement nécessaire à l'unité de séparation et de purification de gaz, par exemple de type Rectisol , en particulier pour le io refroidissement du solvant du lavage, et pour le refroidissement d'un débit de gaz riche en dioxyde de carbone provenant de l'unité de séparation et de purification de gaz.
Un tel procédé permet de réduire l'investissement en combinant les fonctions. L'invention sera décrite en plus de détail en se référant à la Figure 2.
Une unité de séparation et purification de gaz par lavage physique avec un solvant à une température inférieure à 0 C de type Rectisol 10 sépare un gaz à traiter 1 contenant du dioxyde de carbone pour produire un gaz épuré 2 et un gaz riche en dioxyde de carbone 4. L'unité de séparation 10 est refroidie au moyen d'un cycle utilisant un fluide frigorigène 103,103' provenant d'une unité de traitement 12 du gaz riche en dioxyde de carbone 4. L'unité de traitement 12 de dioxyde de carbone est une unité de compression C suivie d'une unité de liquéfaction L produisant du dioxyde de carbone sous forme liquide 5. Le gaz riche en dioxyde de carbone comprimé par l'unité de compression C est liquéfié par l'unité L pour produire le produit final 5. Une partie 103 du liquide formé peut refroidir le débit comprimé en aval et/ou en amont de l'unité de compression C au moyen des échangeurs El,E2.
En particulier, le fluide frigorigène 103 envoyé à l'unité 10 peut servir à
refroidir un débit de solvant utilisé dans une étape de lavage du procédé.
Ce même fluide peut servir à refroidir le dioxyde de carbone en amont et/ou en aval de la compression dans l'unité 12.
Le fluide est du dioxyde de carbone et provient du gaz 4 traité dans l'unité 12. 3 for cooling the fluid of the separation unit and means for cooling the gas rich in carbon dioxide upstream and / or downstream of the compression and iv) means for sending a portion of the liquid carbon dioxide from the liquefaction unit to the refrigeration cycle.
Optionally the apparatus comprises means for cooling the solvent in upstream of the wash by means of the refrigeration cycle.
The invention consists in using the same refrigeration cycle bringing the frigories for cooling necessary for the separation unit and purification of gas, for example Rectisol type, in particular for the cooling of the wash solvent, and for cooling a flow rate of gas rich in carbon dioxide from the separation unit and gas purification.
Such a method makes it possible to reduce the investment by combining the functions. The invention will be described in more detail with reference to the Figure 2 A unit of separation and purification of gas by physical washing with a solvent at a temperature below 0 C of Rectisol type 10 separates a gas to be treated 1 containing carbon dioxide to produce a purified gas 2 and a gas rich in carbon dioxide 4. The separation unit 10 is cooled by means of a cycle using a 103,103 'refrigerant from a treatment unit 12 of the carbon dioxide-rich gas 4. The unit of 12 carbon dioxide treatment is a compression unit C followed a liquefaction unit L producing carbon dioxide in the form of 5. The gas rich in carbon dioxide compressed by the unit of C is liquefied by the unit L to produce the final product.
part 103 of the formed liquid can cool downstream compressed flow and / or upstream of the compression unit C by means of the exchangers E1, E2.
In particular, the refrigerant 103 sent to the unit 10 can be used to cooling a solvent flow rate used in a process washing step.
This same fluid can be used to cool the carbon dioxide upstream and / or downstream of the compression in the unit 12.
The fluid is carbon dioxide and comes from the gas 4 treated in unit 12.

Claims (10)

1. Procédé de production d'un liquide riche en dioxyde de carbone comme produit final dans lequel :
i) on sépare un gaz d'alimentation comprenant du dioxyde de carbone par lavage physique avec un solvant à une température inférieure à 0°C
ii) on refroidit le solvant nécessaire au lavage physique de l'étape i) iii) on produit un gaz riche en dioxyde de carbone par séparation selon l'étape i), on le comprime et on le liquéfie iv) on refroidit le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression de l'étape iii) et v) un même cycle de réfrigération, utilisant du dioxyde de carbone comme fluide frigorigène, apporte les frigories pour le refroidissement de l'étape iv) et pour un refroidissement nécessaire à l'étape i), au moins une partie du dioxyde de carbone utilisé comme fluide frigorigène provenant de la liquéfaction de l'étape iii). 1. Process for producing a liquid rich in carbon dioxide as the end product in which:
i) separating a feed gas comprising carbon dioxide by physical washing with a solvent at a temperature below 0 ° C
ii) cooling the solvent necessary for the physical washing of step i) iii) a gas rich in carbon dioxide is produced by separation according to step i), it is compressed and liquefied iv) the carbon dioxide-rich gas is cooled upstream and / or downstream of the compression of step iii) and v) the same refrigeration cycle, using carbon dioxide as a refrigerant, brings frigories for the cooling of step (iv) and for necessary cooling in step (i), at least part of the carbon dioxide used as a refrigerant from the liquefaction of step iii). 2. Procédé selon la revendication 1 dans lequel le même cycle de réfrigération sert à refroidir le solvant en amont du lavage. The method of claim 1 wherein the same cycle of Refrigeration is used to cool the solvent upstream of the wash. 3. Procédé selon l'une des revendications précédentes dans lequel le solvant est le méthanol. 3. Method according to one of the preceding claims wherein the solvent is methanol. 4. Procédé selon l'une des revendications précédentes dans lequel on liquéfie le gaz riche en dioxyde de carbone après la compression de l'étape iii). 4. Method according to one of the preceding claims wherein liquefies the gas rich in carbon dioxide after the compression of the stage iii). 5. Procédé selon l'une des revendications précédentes dans lequel on refroidit le gaz riche en dioxyde de carbone en amont de la compression de l'étape iii) au moyen du cycle de réfrigération. 5. Method according to one of the preceding claims wherein cools the carbon dioxide-rich gas upstream of the compression of step iii) by means of the refrigeration cycle. 6. Procédé selon l'une des revendications précédentes dans lequel on refroidit le gaz riche en dioxyde de carbone en aval de la compression de l'étape iii) au moyen du cycle de réfrigération. 6. Method according to one of the preceding claims wherein cools the carbon dioxide-rich gas downstream of the compression of step iii) by means of the refrigeration cycle. 7. Appareil de production d'un liquide riche en dioxyde de carbone comme produit final comprenant i) une unité de séparation (10) comprenant une colonne de lavage physique avec un solvant et des moyens pour refroidir un fluide de l'unité de séparation, ii) une unité de compression et de liquéfaction (12, C, L) d'un gaz riche en dioxyde de carbone (4) dérivé de l'unité de séparation, l'unité de compression et de liquéfaction comprenant des moyens (E1, E2) pour refroidir le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression, iii) un même cycle de réfrigération (103, 103'), utilisant du dioxyde de carbone comme fluide frigorigène, étant adapté pour fournir des frigories aux moyens pour refroidir le fluide de l'unité de séparation et aux moyens pour refroidir le gaz riche en dioxyde de carbone en amont et/ou en aval de la compression et iv) des moyens pour envoyer une partie du liquide riche en dioxyde de carbone de l'unité de séparation et de liquéfaction au cycle de réfrigération. 7. Device for producing a liquid rich in carbon dioxide as final product including i) a separation unit (10) comprising a washing column physical with a solvent and means for cooling a fluid of the unit of separation, ii) a compression and liquefaction unit (12, C, L) of a rich gas carbon dioxide (4) derived from the separation unit, the unit of compression and liquefaction comprising means (E1, E2) for cooling the gas rich in carbon dioxide upstream and / or downstream of the compression, iii) the same refrigeration cycle (103, 103 ') using carbon dioxide carbon as a refrigerant, being adapted to provide frigories for means for cooling the fluid of the separation unit and means for cool the carbon dioxide-rich gas upstream and / or downstream of the compression and iv) means for sending a portion of the liquid rich in carbon from the separation and liquefaction unit to the refrigeration cycle. 8. Appareil selon la revendication 7 dans lequel le cycle de réfrigération est adapté pour fournir des frigories en amont de la compression du gaz riche en dioxyde de carbone. Apparatus according to claim 7 wherein the refrigeration cycle is adapted to provide frigories upstream of rich gas compression in carbon dioxide. 9. Appareil selon la revendication 7 ou 8 dans lequel le cycle de réfrigération est adapté pour fournir des frigories en aval de la compression du gaz riche en dioxyde de carbone. Apparatus according to claim 7 or 8 wherein the cycle of refrigeration is suitable for providing frigories downstream of compression of gas rich in carbon dioxide. 10. Appareil selon l'une des revendications 7 à 9 comprenant des moyens pour refroidir le solvant en amont du lavage au moyen du cycle de réfrigération. 10. Apparatus according to one of claims 7 to 9 comprising means for cooling the solvent upstream of the wash by means of the cycle of refrigeration.
CA2800736A 2010-06-01 2011-05-06 Method and apparatus for producing liquid carbon dioxide Abandoned CA2800736A1 (en)

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FR1054244 2010-06-01
FR1054244A FR2960445A1 (en) 2010-06-01 2010-06-01 METHOD AND APPARATUS FOR SEPARATING AND PRODUCING CARBON DIOXIDE
PCT/FR2011/051030 WO2011151549A1 (en) 2010-06-01 2011-05-06 Method and apparatus for producing liquid carbon dioxide

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FR3086187B1 (en) * 2018-09-25 2021-02-26 Air Liquide BIOMETHANE PRODUCTION PROCESS FROM A BIOGAS FLOW INCLUDING SOLIDIFICATION OF IMPURITIES
US20230213246A1 (en) * 2022-01-02 2023-07-06 AirMyne, Inc. Using Carbon Dioxide From A Direct Air Capture System As A Low Global Warming Car And Industrial Refrigerant
US11801476B2 (en) 2022-01-02 2023-10-31 AirMyne, Inc. Efficient and fully automated catalytic direct carbon dioxide capture from air system

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US4675035A (en) * 1986-02-24 1987-06-23 Apffel Fred P Carbon dioxide absorption methanol process
US4704146A (en) * 1986-07-31 1987-11-03 Kryos Energy Inc. Liquid carbon dioxide recovery from gas mixtures with methane
JP2792777B2 (en) * 1992-01-17 1998-09-03 関西電力株式会社 Method for removing carbon dioxide from flue gas
JP3675980B2 (en) * 1996-08-28 2005-07-27 三菱重工業株式会社 Method and apparatus for advanced removal and high pressure recovery of carbon dioxide in high pressure source gas
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