US20130139542A1 - Method and apparatus for producing liquid carbon dioxide - Google Patents
Method and apparatus for producing liquid carbon dioxide Download PDFInfo
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- US20130139542A1 US20130139542A1 US13/700,827 US201113700827A US2013139542A1 US 20130139542 A1 US20130139542 A1 US 20130139542A1 US 201113700827 A US201113700827 A US 201113700827A US 2013139542 A1 US2013139542 A1 US 2013139542A1
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- carbon dioxide
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 55
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 16
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 239000003507 refrigerant Substances 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 23
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
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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
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- 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
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- 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
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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
- F25J1/003—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
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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
- F25J1/003—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
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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
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/008—Hydrocarbons
- F25J1/0087—Propane; Propylene
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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
- F25J1/006—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
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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
- F25J1/02—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
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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
- F25J1/02—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
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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
- F25J1/02—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
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- 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
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- 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
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- 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
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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
- 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
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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
- 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
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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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/70—Flue or combustion exhaust gas
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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
- 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
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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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/30—Compression of the feed stream
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- 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
Definitions
- the present invention relates to a method and an apparatus for producing a carbon dioxide-rich liquid. It applies in particular to gas separation and purification processes based on the principle of physical absorption, which require operation at temperatures below 0° C., such as the Rectisol® or the Selexol® process, in which the carbon dioxide must be produced either in liquid form, or in compressed form for purposes such as sequestration, EOR (Enhanced Oil Recovery), or any other application dedicated to reducing carbon dioxide emissions.
- gas separation and purification processes based on the principle of physical absorption, which require operation at temperatures below 0° C., such as the Rectisol® or the Selexol® process, in which the carbon dioxide must be produced either in liquid form, or in compressed form for purposes such as sequestration, EOR (Enhanced Oil Recovery), or any other application dedicated to reducing carbon dioxide emissions.
- the separated carbon dioxide In the context of reducing carbon dioxide emissions by precombustion processes, the separated carbon dioxide must be produced either in liquid form for road, river or maritime transport, or in compressed form for pipeline transport. These processes also use a compressor operating with the fluid to be liquefied (carbon dioxide) to provide the heat balance required for producing carbon dioxide in liquid or compressed form.
- FIG. 1 shows an apparatus of the prior art.
- a gas separation and purification unit of the Rectisol® type 10 separates a gas to be treated containing carbon dioxide 1 to produce a purified gas 2 and a carbon dioxide-rich gas.
- the separation unit 10 is cooled by means of an external refrigerating unit 11 using a refrigerant 3 , 3 ′,
- the carbon dioxide is liquefied in a liquefier 12 to produce liquid carbon dioxide 5 .
- a method for producing a carbon dioxide-rich liquid as end product in which:
- a feed gas comprising carbon dioxide is separated by physical washing with a solvent at a temperature below 0° C.
- step ii) the solvent required for the physical washing of step i) is cooled
- a carbon dioxide-rich gas is produced by separation according to step i), the said gas is compressed and liquefied
- the carbon dioxide-rich gas is cooled upstream and/or downstream of the compression operation of step iii) and
- step iii) a single refrigeration cycle, using carbon dioxide as refrigerant, supplies the refrigeration for the cooling operation of step iv) and for a cooling operation required in step i), at least part of the carbon dioxide used as refrigerant issuing from the liquefaction operation of step iii).
- an apparatus for producing a carbon dioxide-rich liquid as end product, comprising
- a separation unit comprising a column for physical washing with a solvent and means for cooling a fluid of the separation unit
- a unit for compressing and liquefying a carbon dioxide-rich gas derived from the separation unit in order to produce liquid carbon dioxide as end product comprising means for cooling the gas upstream and/or downstream of the compression operation
- a single refrigeration cycle using carbon dioxide as refrigerant being suitable for supplying refrigeration to the means for cooling the fluid of the separation unit and to the means for cooling the carbon dioxide-rich gas upstream and/or downstream of the compression operation and
- iv) means for sending part of the liquid carbon dioxide from the separation and liquefaction unit to the refrigeration cycle.
- the apparatus comprises means for cooling the solvent upstream of the washing operation by means of the refrigeration cycle.
- the invention consists in using a single refrigeration cycle supplying the refrigeration for cooling required for the gas separation and purification unit, for example of the Rectisol® type, in particular for cooling the washing solvent, and for cooling a stream of carbon dioxide-rich gas issuing from the gas separation and purification unit.
- Such a method serves to reduce the investment by combining the functions.
- the invention is described in greater detail with reference to FIG. 2 .
- a unit for separating and purifying gas by physical washing with a solvent at a temperature below 0° C. of the Rectisol® type 10 separates a gas to be treated 1 containing carbon dioxide to produce a purified gas 2 and a carbon dioxide-rich gas 4 .
- the separation unit 10 is cooled by means of a cycle using a refrigerant 103 , 103 issuing from a unit 12 for treating the carbon dioxide-rich gas 4 .
- the carbon dioxide treatment unit 12 is a compression unit C followed by a liquefaction unit L producing carbon dioxide in liquid form 5 .
- the carbon dioxide-rich gas compressed by the compression unit C is liquefied by the unit L to produce the end product 5 .
- a portion 103 of the liquid formed can cod the compressed stream downstream and/or upstream of the compression unit C by means of the heat exchangers E 1 , E 2 .
- the refrigerant 103 sent to the unit 10 can serve to cod a stream of solvent used in a washing step of the method.
- the same fluid can serve to cod the carbon dioxide upstream and/or downstream of the compression operation in the unit 12 .
- the fluid is carbon dioxide and issues from the gas 4 treated in the unit 12 .
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- 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)
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Abstract
The invention relates to an apparatus for producing carbon dioxide-rich liquid, which includes a separation unit including a column for physically washing with a solvent and means for cooling a fluid of the separation unit, and a unit for compressing and liquefying a carbon dioxide-rich gas derived from the separation unit, including means for cooling the gas upstream and/or downstream from the compression operation, a single refrigerating cycle using carbon dioxide as the refrigerant, which is suitable for providing frigories to the means for cooling the fluid of the separation unit and to the means for cooling the gas upstream and/or downstream from the compression operation, and means for sending a portion of the liquid from the liquefaction unit to the refrigerating cycle.
Description
- The present invention relates to a method and an apparatus for producing a carbon dioxide-rich liquid. It applies in particular to gas separation and purification processes based on the principle of physical absorption, which require operation at temperatures below 0° C., such as the Rectisol® or the Selexol® process, in which the carbon dioxide must be produced either in liquid form, or in compressed form for purposes such as sequestration, EOR (Enhanced Oil Recovery), or any other application dedicated to reducing carbon dioxide emissions.
- In a gas separation and purification unit based on the physical absorption principle which requires operation at temperatures below 0° C., like the Rectisol® or the Selexol® process, it is necessary to supply large refrigeration loads for the process to operate efficiently, The refrigeration duty is commonly supplied by refrigerating units operating on fluids external to the process, such as ammonia or propylene, for example.
- In the context of reducing carbon dioxide emissions by precombustion processes, the separated carbon dioxide must be produced either in liquid form for road, river or maritime transport, or in compressed form for pipeline transport. These processes also use a compressor operating with the fluid to be liquefied (carbon dioxide) to provide the heat balance required for producing carbon dioxide in liquid or compressed form.
-
FIG. 1 shows an apparatus of the prior art. A gas separation and purification unit of the Rectisol®type 10 separates a gas to be treated containingcarbon dioxide 1 to produce a purified gas 2 and a carbon dioxide-rich gas. Theseparation unit 10 is cooled by means of an external refrigerating unit 11 using a refrigerant 3, 3′, The carbon dioxide is liquefied in aliquefier 12 to produce liquid carbon dioxide 5. - According to an object of the invention, a method is provided for producing a carbon dioxide-rich liquid as end product, in which:
- i) a feed gas comprising carbon dioxide is separated by physical washing with a solvent at a temperature below 0° C.
- ii) the solvent required for the physical washing of step i) is cooled
- iii) a carbon dioxide-rich gas is produced by separation according to step i), the said gas is compressed and liquefied
- iv) the carbon dioxide-rich gas is cooled upstream and/or downstream of the compression operation of step iii) and
- v) a single refrigeration cycle, using carbon dioxide as refrigerant, supplies the refrigeration for the cooling operation of step iv) and for a cooling operation required in step i), at least part of the carbon dioxide used as refrigerant issuing from the liquefaction operation of step iii).
- According to other optional aspects:
-
- the same refrigeration cycle serves to cool the carbon dioxide-rich gas upstream and/or downstream of the compression operation;
- the same refrigeration cycle serves to cool the solvent upstream of the washing operation;
- the solvent is methanol;
- the carbon dioxide-rich gas is liquefied after the compression operation of step iii).
- According to a further object of the invention, an apparatus is provided for producing a carbon dioxide-rich liquid as end product, comprising
- i) a separation unit comprising a column for physical washing with a solvent and means for cooling a fluid of the separation unit,
- ii) a unit for compressing and liquefying a carbon dioxide-rich gas derived from the separation unit in order to produce liquid carbon dioxide as end product, the compression and liquefaction unit comprising means for cooling the gas upstream and/or downstream of the compression operation,
- iii) a single refrigeration cycle using carbon dioxide as refrigerant, being suitable for supplying refrigeration to the means for cooling the fluid of the separation unit and to the means for cooling the carbon dioxide-rich gas upstream and/or downstream of the compression operation and
- iv) means for sending part of the liquid carbon dioxide from the separation and liquefaction unit to the refrigeration cycle.
- Optionally, the apparatus comprises means for cooling the solvent upstream of the washing operation by means of the refrigeration cycle.
- The invention consists in using a single refrigeration cycle supplying the refrigeration for cooling required for the gas separation and purification unit, for example of the Rectisol® type, in particular for cooling the washing solvent, and for cooling a stream of carbon dioxide-rich gas issuing from the gas separation and purification unit.
- Such a method serves to reduce the investment by combining the functions. The invention is described in greater detail with reference to
FIG. 2 . - A unit for separating and purifying gas by physical washing with a solvent at a temperature below 0° C. of the Rectisol®
type 10 separates a gas to be treated 1 containing carbon dioxide to produce a purified gas 2 and a carbon dioxide-rich gas 4. Theseparation unit 10 is cooled by means of a cycle using arefrigerant unit 12 for treating the carbon dioxide-rich gas 4. The carbondioxide treatment unit 12 is a compression unit C followed by a liquefaction unit L producing carbon dioxide in liquid form 5. The carbon dioxide-rich gas compressed by the compression unit C is liquefied by the unit L to produce the end product 5. Aportion 103 of the liquid formed can cod the compressed stream downstream and/or upstream of the compression unit C by means of the heat exchangers E1, E2. - In particular, the
refrigerant 103 sent to theunit 10 can serve to cod a stream of solvent used in a washing step of the method. - The same fluid can serve to cod the carbon dioxide upstream and/or downstream of the compression operation in the
unit 12. - The fluid is carbon dioxide and issues from the
gas 4 treated in theunit 12.
Claims (11)
1-10. (canceled)
11. A method for producing a carbon dioxide-rich liquid as end product, comprising;
i) separating a feed gas comprising carbon dioxide by physical washing with a solvent at a temperature below 0° C.,
ii) cooling the solvent required for the physical washing of step i),
iii) producing a carbon dioxide-rich gas by separation according to step i), said gas is compressed and liquefied,
iv) cooling the carbon dioxide-rich gas upstream and/or downstream of the compression operation of step iii) and,
v) supplying the refrigeration for the cooling operation of step iv) and for a cooling operation required in step I) with a single refrigeration cycle, using carbon dioxide as refrigerant, at least part of the carbon dioxide used as refrigerant issuing from the liquefaction operation of step iii).
12. The method of claim 11 , further comprising cooling the solvent upstream of the washing operation with said refrigeration cycle.
13. The method of claim 11 , wherein the solvent is methanol.
14. The method of claim 11 , wherein the carbon dioxide-rich gas is liquefied after the compression operation of step iii).
15. The method of claim 11 , wherein the carbon dioxide-rich gas is cooled upstream of the compression operation of step iii) by means of the refrigeration cycle.
16. The method of claim 11 , wherein the carbon dioxide-rich gas is cooled downstream of the compression operation of step iii) by means of the refrigeration cycle.
17. An apparatus for producing a carbon dioxide-rich liquid as end product, comprising
i) a separation unit comprising a column for physical washing with a solvent and means for cooling a fluid of the separation unit,
ii) a unit for compressing and liquefying a carbon dioxide-rich gas derived from the separation unit, the compression and liquefaction unit comprising means for cooling the carbon dioxide-rich gas upstream and/or downstream of the compression operation,
iii) a single refrigeration cycle using carbon dioxide as refrigerant, being suitable for supplying refrigeration to the means for cooling the fluid of the separation unit and to the means for cooling the carbon dioxide-rich gas upstream and/or downstream of the compression operation and
iv) means for sending part of the carbon dioxide-rich liquid from the separation and liquefaction unit to the refrigeration cycle.
18. The apparatus of claim 17 , wherein the refrigeration cycle is suitable for supplying refrigeration upstream of the compression of the carbon dioxide-rich gas.
19. The apparatus of claim 17 the compression of the carbon dioxide-rich gas.
20. The apparatus of claim 17 , comprising a means for cooling the solvent upstream of the washing operation by means of the refrigeration cycle.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
Publications (1)
Publication Number | Publication Date |
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US20130139542A1 true US20130139542A1 (en) | 2013-06-06 |
Family
ID=43365276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/700,827 Abandoned US20130139542A1 (en) | 2010-06-01 | 2011-05-06 | Method and apparatus for producing liquid carbon dioxide |
Country Status (9)
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US (1) | US20130139542A1 (en) |
EP (1) | EP2576005A1 (en) |
JP (1) | JP2013528562A (en) |
CN (1) | CN102917771A (en) |
AU (1) | AU2011260176A1 (en) |
CA (1) | CA2800736A1 (en) |
FR (1) | FR2960445A1 (en) |
WO (1) | WO2011151549A1 (en) |
ZA (1) | ZA201208910B (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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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 |
US11801476B2 (en) | 2022-01-02 | 2023-10-31 | AirMyne, Inc. | Efficient and fully automated catalytic direct carbon dioxide capture from air system |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4528002A (en) * | 1983-04-21 | 1985-07-09 | Linde Aktiengesellschaft | Process for separation of CO2 from CO2 -containing gases |
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 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB0709433D0 (en) * | 2007-05-16 | 2007-06-27 | Gasconsult Ltd | Process for removal of carbon dioxide from gases |
WO2009003238A1 (en) * | 2007-07-03 | 2009-01-08 | Dut Pty Ltd | Improvements in the recovery of carbon dioxide |
-
2010
- 2010-06-01 FR FR1054244A patent/FR2960445A1/en active Pending
-
2011
- 2011-05-06 CN CN2011800268607A patent/CN102917771A/en active Pending
- 2011-05-06 AU AU2011260176A patent/AU2011260176A1/en not_active Abandoned
- 2011-05-06 JP JP2013512967A patent/JP2013528562A/en not_active Withdrawn
- 2011-05-06 US US13/700,827 patent/US20130139542A1/en not_active Abandoned
- 2011-05-06 EP EP11723581.2A patent/EP2576005A1/en not_active Withdrawn
- 2011-05-06 CA CA2800736A patent/CA2800736A1/en not_active Abandoned
- 2011-05-06 WO PCT/FR2011/051030 patent/WO2011151549A1/en active Application Filing
-
2012
- 2012-11-26 ZA ZA2012/08910A patent/ZA201208910B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4528002A (en) * | 1983-04-21 | 1985-07-09 | Linde Aktiengesellschaft | Process for separation of CO2 from CO2 -containing gases |
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 |
Also Published As
Publication number | Publication date |
---|---|
AU2011260176A1 (en) | 2013-01-10 |
EP2576005A1 (en) | 2013-04-10 |
WO2011151549A1 (en) | 2011-12-08 |
FR2960445A1 (en) | 2011-12-02 |
CN102917771A (en) | 2013-02-06 |
CA2800736A1 (en) | 2011-12-08 |
ZA201208910B (en) | 2013-09-25 |
JP2013528562A (en) | 2013-07-11 |
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