WO2018224763A1 - Méthode de purification de gaz naturel mettant en oeuvre des membranes - Google Patents
Méthode de purification de gaz naturel mettant en oeuvre des membranes Download PDFInfo
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- WO2018224763A1 WO2018224763A1 PCT/FR2018/051285 FR2018051285W WO2018224763A1 WO 2018224763 A1 WO2018224763 A1 WO 2018224763A1 FR 2018051285 W FR2018051285 W FR 2018051285W WO 2018224763 A1 WO2018224763 A1 WO 2018224763A1
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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
- B01D53/22—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 diffusion
- B01D53/225—Multiple stage diffusion
- B01D53/226—Multiple stage diffusion in serial connexion
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—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
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/0605—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the feed stream
- F25J3/061—Natural gas or substitute natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/063—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream
- F25J3/0635—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation 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
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/063—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream
- F25J3/0645—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream separation of CnHm with 3 carbon atoms or more
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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
- F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
- F25J3/063—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream
- F25J3/067—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the separated product stream separation of carbon dioxide
-
- 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
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/06—Heat exchange, direct or indirect
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/48—Expanders, e.g. throttles or flash tanks
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/547—Filtration for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/548—Membrane- or permeation-treatment for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/80—Processes or apparatus using other separation and/or other processing means using membrane, i.e. including a permeation step
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
- F25J2220/68—Separating water or hydrates
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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
- Natural gas purification method using membranes The present invention relates to a process for purifying a hydrocarbon stream such as natural gas.
- Raw natural gas can contain a large number of troublesome impurities to be removed.
- Carbon dioxide is one example.
- From a certain concentration of CO2 in natural gas it is typically not marketable because of its low calorific value.
- To remove CO2 from natural gas several technologies exist. When the content is relatively low (for example less than 10%), an amine wash is most often used.
- One of the weak points of this solution is the energy needed to regenerate the amines having absorbed CO2.
- this technology becomes prohibitive in terms of operating costs for example.
- the inventors of the present invention have developed a solution for removing the CO2 contained in a stream of natural gas to be liquefied by minimizing methane losses during this withdrawal and while minimizing the costs required to deploy this type of process. of purification.
- the present invention relates to a method for purifying a natural gas feed stream comprising methane, CO2 and hydrocarbons having at least two carbon atoms comprising the following steps:
- step b) is preceded by the following steps b1) and b2):
- Step b1) Relaxing Joule Thomson of the feed stream from the pressure P1 to a pressure between P2 and Ps;
- Step b2) Introduction of the stream from step b1) into a phase separator pot to produce at least two phases including a liquid phase comprising at least 10 mol%, preferably at least 50 mol%, hydrocarbons having at least four carbon atoms initially contained in the feed stream and a gas phase;
- the membrane separation unit implemented in step b) comprises a preliminary membrane separation stage producing a stream enriched in hydrocarbons having at least four carbon atoms at the pressure P4 and a stream whose hydrocarbon dew point is at most equal to the hydrocarbon dew point of the feed gas of this step b) at the pressure P2.
- the subject of the invention is also:
- a process as defined above characterized in that the membranes used in the membrane separation unit are reverse-phase membranes for the preliminary stage and membranes that are more selective for CO2 than for methane and more selective for methane only for heavy hydrocarbons for the main separation stage.
- a method as defined above characterized in that P1 varies over time.
- the invention is particularly advantageous for a gas field whose pressure decreases with time.
- a system consisting only of Joule-Thomson pretreatment and after a number of years of operation add membranes with inverse selectivity (type "rubbery membranes" or type 1 for this invention).
- These membranes are more selective for heavy hydrocarbons (that is to say having at least three carbon atoms than for methane or even for CO2.) This makes it possible to reduce the hydrocarbon dew point on the high pressure side (that is, that is to say on the side of the residue) by letting the heavy hydrocarbons pass on the low pressure side (that is to say on the permeate side).
- the hydrocarbon stream is usually a stream of natural gas obtained from a domestic gas network distributed via pipelines.
- natural gas refers to any composition containing hydrocarbons including at least methane. This includes a "raw” composition (prior to any treatment or wash), as well as any composition that has been partially, substantially, or wholly processed for the reduction and / or elimination of one or more compounds, including but not limited to limit, sulfur, carbon dioxide, water, mercury and some heavy and aromatic hydrocarbons.
- the heat exchanger may be any heat exchanger, unit or other arrangement adapted to allow the passage of a number of flows, and thus allow a direct or indirect heat exchange between one or more lines of refrigerant, and a or multiple feed streams.
- the flow of natural gas is essentially composed of methane.
- the stream that will be liquefied comprises at least 80 mol% of methane.
- natural gas contains quantities of hydrocarbons heavier than methane, such as, for example, ethane, propane, butane and pentane, as well as certain aromatic hydrocarbons.
- the natural gas stream also contains non-hydrocarbon products such as nitrogen (variable content but of the order of 5 mol% for example) or other impurities H2O, CO2, H2S and other sulfur compounds, the mercury and others (about 0.5% to about 5% mol).
- a natural gas feed stream 1 is introduced into a purification unit 2 at a pressure P1.
- the feed stream 1 comprises at least 50 mol% of methane and at least 20 mol% of CO 2.
- the stream 1 is cooled in a heat exchanger 3.
- Ps is equal to 65 bara.
- the stream 1 is cooled by about 20 ° C.
- the stream 4 thus cooled undergoes expansion, for example by means of a Joule Thomson valve 5.
- the pressure P2 of the stream 6 thus expanded is less than P1 d at least 5 bara.
- the stream 6 is introduced into a phase separator pot 7. There emerges a liquid stream 8 comprising more than 99 mol% of water, another liquid stream 9 comprising at least 50 mol% of hydrocarbons having more than 4 carbon atoms and at least 25 mol% of CO2, and a gas stream comprising at least 50 mol% of methane.
- the gaseous stream 10 can be treated in a unit 1 1 further filtering hydrocarbon streams having more than 4 carbon atoms, in order to refine the separation previously carried out in the pot 7, in order to provide a depleted gas stream 10 ' heavy hydrocarbons and a liquid stream 9 'enriched with heavy hydrocarbons.
- Stream 9 ' is then mixed with stream 9.
- the gas stream 10 or 10 ' is then heated in the heat exchanger 3 by about 20 ° C.
- the stream 12 is sent to a unit 13 for removing remaining impurities such as mercury for example.
- the unit 13 comprises an adsorption unit 14 followed by a particulate filter 15.
- the stream 16 at the outlet of the unit 13 is then introduced at the pressure P2 into a membrane separation unit 17 after having been heated. 19 in a heat exchanger 18.
- the stream 16 is heated from about 30 0 C to 40 ° C. From the passage of the stream 19 in the unit 17, I result in a stream 20 depleted of CO2 and enriched in methane and a stream 21 enriched in CO2 and depleted in hydrocarbons.
- stream 20 comprises less than 8 mol% of CO2 and more than 80 mol% of methane and stream 21 comprises at least 75 mol% of CO2.
- the membrane unit 17 comprises at least one membrane that is selective for CO2 but non-selective for heavy hydrocarbons (type "glassy membranes" or type 2 for this invention, that is to say a membrane that is more selective for CO2 than for methane and more selective for methane than for heavy hydrocarbons).
- the pressure P3 of the stream 21 is less than 3 bara, preferably less than 1 bara.
- the stream 20 at the outlet of the unit 17 at a pressure P2 is then compressed to a pressure greater than 100 bara and is then sent into the exchanger 18.
- the stream 22 that comes out is intended to be treated and / or transported as gas natural in a means of transport such as a pipeline or gas pipeline, for example before being liquefied, for example.
- the feed stream 1 is directly sent via a valve 23 into the conduit which sends the current 12 (numbering used in the case described in paragraph A above) to the unit 13.
- the stream 24 at the outlet of the unit 13 is then introduced to a first membrane separation unit 25 upstream of the separation unit 17. It is here acts of a type 1 membrane according to the invention for reducing the hydrocarbon dew point of the high pressure side.
- a current 26 results at a pressure P4 enriched in CO2 and in hydrocarbons having more than three carbon atoms and a stream 27 enriched in methane and depleted in hydrocarbons having more than three carbon atoms.
- the stream 27 is then introduced into the membrane separation unit 17 after a passage in the heat exchanger 18 and follows the same method as the current 19 mentioned in paragraph A above.
- Stream 21 is then mixed with stream 26 to provide the highly enriched CO2 stream.
- Ps may be lower if the stream 22 is intended to be transported at a lower pressure, for example of the order of 30 bara.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2018279228A AU2018279228B2 (en) | 2017-06-09 | 2018-06-04 | Method for purifying natural gas using membranes |
BR112019025828-0A BR112019025828B1 (pt) | 2017-06-09 | 2018-06-04 | Processo para purificar uma corrente de alimentação de gás natural |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1755149A FR3067261B1 (fr) | 2017-06-09 | 2017-06-09 | Methode de purification de gaz naturel mettant en œuvre des membranes. |
FR1755149 | 2017-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018224763A1 true WO2018224763A1 (fr) | 2018-12-13 |
Family
ID=59381545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2018/051285 WO2018224763A1 (fr) | 2017-06-09 | 2018-06-04 | Méthode de purification de gaz naturel mettant en oeuvre des membranes |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2018279228B2 (fr) |
FR (1) | FR3067261B1 (fr) |
WO (1) | WO2018224763A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6648944B1 (en) * | 2003-01-28 | 2003-11-18 | Membrane Technology And Research, Inc. | Carbon dioxide removal process |
WO2015138308A2 (fr) * | 2014-03-12 | 2015-09-17 | Linde Aktiengesellschaft | Procédés d'élimination d'agents de contamination du gaz naturel |
WO2017096149A1 (fr) * | 2015-12-03 | 2017-06-08 | Air Liquide Advanced Technologies, U.S. LLC | Procédé et système pour la purification de gaz naturel à l'aide de membranes |
US20170157556A1 (en) * | 2015-12-03 | 2017-06-08 | Air Liquide Advanced Technologies, U.S. LLC | Method and system for purification of natural gas using membranes |
-
2017
- 2017-06-09 FR FR1755149A patent/FR3067261B1/fr active Active
-
2018
- 2018-06-04 WO PCT/FR2018/051285 patent/WO2018224763A1/fr active Application Filing
- 2018-06-04 AU AU2018279228A patent/AU2018279228B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6648944B1 (en) * | 2003-01-28 | 2003-11-18 | Membrane Technology And Research, Inc. | Carbon dioxide removal process |
WO2015138308A2 (fr) * | 2014-03-12 | 2015-09-17 | Linde Aktiengesellschaft | Procédés d'élimination d'agents de contamination du gaz naturel |
WO2017096149A1 (fr) * | 2015-12-03 | 2017-06-08 | Air Liquide Advanced Technologies, U.S. LLC | Procédé et système pour la purification de gaz naturel à l'aide de membranes |
US20170157556A1 (en) * | 2015-12-03 | 2017-06-08 | Air Liquide Advanced Technologies, U.S. LLC | Method and system for purification of natural gas using membranes |
Non-Patent Citations (1)
Title |
---|
DAVID DORTMUNDT; KISHORE DOSHI: "Recent Developments in C0 Removal Membrane Technology", 1999, UOP LLC |
Also Published As
Publication number | Publication date |
---|---|
FR3067261A1 (fr) | 2018-12-14 |
BR112019025828A2 (pt) | 2020-07-07 |
AU2018279228B2 (en) | 2024-05-09 |
FR3067261B1 (fr) | 2020-06-26 |
AU2018279228A1 (en) | 2020-01-16 |
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