EP2864240A1 - Procédé et installation pour la production combinée de gaz de synthèse d'ammoniac et de dioxyde de carbone - Google Patents
Procédé et installation pour la production combinée de gaz de synthèse d'ammoniac et de dioxyde de carboneInfo
- Publication number
- EP2864240A1 EP2864240A1 EP13733351.4A EP13733351A EP2864240A1 EP 2864240 A1 EP2864240 A1 EP 2864240A1 EP 13733351 A EP13733351 A EP 13733351A EP 2864240 A1 EP2864240 A1 EP 2864240A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- carbon dioxide
- unit
- ammonia
- methane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 217
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 107
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 49
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 46
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 42
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title description 3
- 239000007789 gas Substances 0.000 claims abstract description 80
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 74
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000001257 hydrogen Substances 0.000 claims abstract description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 23
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 15
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims description 26
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 238000002407 reforming Methods 0.000 claims description 16
- 238000000746 purification Methods 0.000 claims description 11
- 150000002431 hydrogen Chemical class 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910001868 water Inorganic materials 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 4
- 239000007792 gaseous phase Substances 0.000 claims description 3
- 230000000779 depleting effect Effects 0.000 claims 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009919 sequestration Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- AFJYYKSVHJGXSN-KAJWKRCWSA-N selamectin Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1C(/C)=C/C[C@@H](O[C@]2(O[C@@H]([C@@H](C)CC2)C2CCCCC2)C2)C[C@@H]2OC(=O)[C@@H]([C@]23O)C=C(C)C(=N\O)/[C@H]3OC\C2=C/C=C/[C@@H]1C AFJYYKSVHJGXSN-KAJWKRCWSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/025—Preparation or purification of gas mixtures for ammonia synthesis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/245—Stationary reactors without moving elements inside placed in series
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0488—Processes integrated with preparations of other compounds, e.g. methanol, urea or with processes for power generation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/10—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds combined with the synthesis of ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0283—Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/042—Purification by adsorption on solids
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/042—Purification by adsorption on solids
- C01B2203/043—Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration
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- C—CHEMISTRY; METALLURGY
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/0475—Composition of the impurity the impurity being carbon dioxide
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/048—Composition of the impurity the impurity being an organic compound
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/0495—Composition of the impurity the impurity being water
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- C—CHEMISTRY; METALLURGY
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/06—Integration with other chemical processes
- C01B2203/068—Ammonia synthesis
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- C—CHEMISTRY; METALLURGY
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0872—Methods of cooling
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/14—Details of the flowsheet
- C01B2203/146—At least two purification steps in series
- C01B2203/147—Three or more purification steps in series
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/14—Details of the flowsheet
- C01B2203/148—Details of the flowsheet involving a recycle stream to the feed of the process for making hydrogen or synthesis gas
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
- C01B2210/0014—Physical processing by adsorption in solids
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the present invention relates to a method and installation for the combined production of synthesis gas of ammonia and carbon dioxide from a hydrocarbon source. More particularly, the present invention relates to a process for the combined production of synthesis gas of ammonia and carbon dioxide from a synthesis gas obtained by reforming hydrocarbons, and in particular natural gas.
- the invention also relates to a method and an integrated production plant for ammonia and carbon dioxide and a method and a plant for producing urea.
- step 4 When it is desired to recover the CO2 extracted in step 4 (for example to facilitate the extraction of oil or for a chemical production such as urea, etc.) or if it is desired to sequester it to reduce emissions of greenhouse gases, it is necessary to add a step of compression and drying of the CO2 extracted in step 4.
- the proposed invention aims to significantly reduce the cost of production of NH 3 when the CO2 must be compressed to be valued as mentioned above.
- a process for the combined production of synthesis gas of ammonia and carbon dioxide from a mixture of hydrocarbons comprising at least:
- PSA waste containing carbon dioxide, nitrogen, methane and carbon monoxide, at a pressure of the order of 1 to 3 bar abs
- a step of treating said PSA waste to obtain a fluid enriched in carbon dioxide comprising at least:
- each of the steps includes itself: a condensation step of all or part of the CO2 contained in the gas from the previous step, followed by
- step or steps are carried out at temperatures between room temperature and -56 ° C,
- the depleted flow rate of CO2 is sent to methanation at a pressure of at least 35 bar.
- CO2 is sent to the adsorption unit by pressure modulation.
- the process comprises a reverse conversion step to the synthesis gas vapor to oxidize most of the carbon monoxide it contains to carbon dioxide, with corresponding production of hydrogen
- the process comprises a step of reforming the hydrocarbon mixture to obtain synthesis gas containing at least carbon dioxide, hydrogen, carbon monoxide, methane, and water vapor;
- the gas containing methane and nitrogen is returned to the reforming step.
- all the nitrogen sent to the treatment unit is contained in the at least a portion of the hydrogen enriched stream and the at least a portion of the nitrogen and methane containing gas mixed to form a synthesis gas; 'ammonia.
- Ammonia is reacted with carbon dioxide to produce urea.
- an apparatus for the combined production of synthesis gas of ammonia and carbon dioxide from a mixture of hydrocarbons comprising at least:
- PSA waste a waste gas containing carbon dioxide, nitrogen, methane and carbon monoxide
- a processing unit of said PSA waste to obtain a fluid enriched in carbon dioxide comprising at least:
- a PSA waste drying unit compressed by removing the water contained to obtain a dry gas
- step or steps are carried out at temperatures between room temperature and -56 ° C,
- a CO2 depletion unit of a gaseous phase resulting from at least one separation step, for example by permeation, to produce a depleted flow rate of CO2 and a flow enriched with CO2
- the apparatus may include means for sending the CO2 enriched flow from the CO2 depletion step to the pressure modulation adsorption unit.
- an apparatus for producing ammonia and carbon dioxide as described above comprising a processing unit for treating ammonia synthesis gas to produce a flow rate of ammonia and a gas containing methane and nitrogen.
- the apparatus may include means for returning the gas containing methane and nitrogen to the reforming step.
- the apparatus may include a synthesis gas reverse conversion unit for oxidizing most of the carbon monoxide it contains to carbon dioxide, with corresponding hydrogen production.
- the apparatus may comprise a reforming unit of the hydrocarbon mixture for obtaining synthesis gas containing at least carbon dioxide, hydrogen, carbon monoxide, methane and water vapor.
- the apparatus may include a unit in which the ammonia is reacted with the carbon dioxide to produce urea.
- the solution according to the invention consists in using the incondensable gases of a process for producing carbon dioxide by separation at low temperature to supply an ammonia synthesis production unit.
- the PSA residue contains a quantity of CO2 of about 45% from reforming and reverse conversion (the exact content of CO2 is naturally a function of the composition of the mixture initial hydrocarbons).
- the process then makes it possible, starting from the residual gas of the PSA, whose pressure is typically less than 2 bar, to dispose, thanks to the compression of a gas, at a total pressure of between 40 and 80 bar, corresponding to a partial pressure of CO2. between 15 and 40 bar, compatible with cryogenic purification. These pressures will make it possible to use the fluids in the rest of the process without having to resort to additional compressions.
- the PSA waste is purified by partial condensation and optionally by permeation to produce a liquid flow rich in CO2.
- This liquid can, thanks to appropriate complementary treatments, be used or sequestered on site or nearby in gaseous form; it can be exported for use or sequestered in gaseous or liquid form. It can particularly and particularly advantageously be used in the food industry, through a suitable purification.
- all or part of the liquid is vaporized after expansion, with recovery of cold, to produce CO2 in gaseous form under pressure between 10 and 35 bar.
- the recovered cold is advantageously used for the cooling of process fluids in addition to the refrigerating apparatus.
- the CO2 can then be compressed to be transported by pipeline to a site of use and / or sequestration.
- the process is particularly advantageous when it is used to optimize the production of ammonia synthesis gas and jointly produce carbon dioxide.
- FIG. 1 represents a functional diagram illustrating an embodiment of the invention for the production of synthesis gas of ammonia and, respectively, of carbon dioxide, for example carbon dioxide to be sequestered.
- the feedstock to the process consists of a mixture of hydrocarbons - here natural gas (NG) - the hydrocarbon stream 1 feeds a plant 3 comprising a desulfurization unit, a pre-reformer to produce a pre-reformed mixture, mixture consisting essentially of methane, hydrogen, carbon monoxide, carbon dioxide and water, a reforming module fed by the pre-reformed mixture which produces a synthesis gas substantially containing hydrogen, monoxide of carbon, carbon dioxide, methane and water vapor and a reverse conversion module.
- NG natural gas
- the synthesis gas is cooled and then the cooled gas is treated in this inverse conversion module, where the CO is converted to H 2 and CO2.
- the gaseous mixture 5 leaving the plant 3 is cooled and then treated in a hydrogen purification unit 7 of pressure swing adsorption or PSA type, to obtain a gaseous stream enriched with hydrogen 9 at a purity at least equal to 98% and a residue gas 1 1 - waste PSA- containing carbon dioxide, methane, nitrogen, argon, hydrogen and carbon monoxide.
- This residual PSA 1 1 is available at a pressure of the order of 1 to 3 bar abs, it contains substantially all the CO2 co-produced during the reforming and reverse conversion steps.
- the average composition of the PSA 1 1 waste is close to: CO 2 : 45% - CO: 12% - H2: 23% - CH 4 : 17% - H 2 O: 1% - N 2 : 2%.
- CO2 content is between 42 and 48%, the content of H 2 varies between 20 and 26%, the contents of other constituents remaining approximately constant.
- the PSA residue 1 1 is then purified in a purification unit 13.
- the PSA 11 1 waste is first compressed in a compression module of the purification unit, to obtain a residual PSA compressed . It is compressed to about 60 bar, which ensures a partial pressure of CO2 of the order of 27 bar. Then it is freed from its heavy impurities in an adsorption module of the purification unit, by a succession of regenerable adsorptions for example, one thus obtains a purified compressed waste which is then dried in a drying module of the purification unit for obtaining a compressed waste, freed from heavy impurities and dried.
- This waste is then cooled to be separated by liquefaction in a separation module forming part of the purification unit, which makes it possible to obtain a liquid containing essentially liquid CO2 and a gaseous mixture containing an uncondensed fraction of CO2. than lighter compounds called incondensable.
- the cooling of the waste 1 1 is carried out by countercurrent circulation of the cold fluids resulting from the cryogenic purification and / or by heat exchange with an associated external refrigerating unit.
- the liquid contains essentially CO2, however, in order to obtain pure CO2, the liquid results from a distillation in order to rid it of the light impurities entrained in the liquid phase. For this, the waste can be expanded to 23 bar before feeding the distillation column.
- the gas phase 17 obtained at the end of the separation contains the light impurities of the charge 1 and is at least 40 bar abs; warmed to room temperature in the heat exchangers, it is the purge of incondensables, available at a pressure of 58 bar.
- the composition of the purge is of the order of: CO 2 : 21% - CO: 18% - H 2: 36% - CH 4 : 24% - N 2 : 1%.
- the purge of incondensables 17 is then treated in the adsorption or permeation module of a CO2 depletion unit 19 for reduce its carbon dioxide content.
- a product gas 21 has a reduced content of carbon dioxide.
- the other product gas 20, enriched in CO2 and rich in hydrogen, is sent to the unit PSA 7 to improve its performance, without being mixed upstream with the flow 5.
- the efficiency of the PSA unit 7 is very low because of the strong hold in N 2, one way of improving it is to introduce the gas (possibly being a permeate), which is certainly richer in H2 that the PSA feed, at the right time of the cycle, to improve the performance of PSA.
- the PSA unit differs from the usual H 2 PSA that must stop CO / CO 2 and N 2 .
- the unit 7 stops the CO and the CO2, but can let the nitrogen pass, which makes it possible not to have to penalize itself on the yield H 2 of the unit PSA 7.
- the gas 21 is then treated by methanation in a methanation unit 23 to convert the carbon dioxide and carbon monoxide residues into methane, forming a gas.
- the gas is mixed with the pure hydrogen 9 to form an ammonia synthesis gas 27.
- the ammonia synthesis gas 27 is sent to an ammonia synthesis unit 29 to produce ammonia 31.
- the ammonia synthesis unit also produces a gas 33 containing methane, nitrogen, argon, and hydrogen which is returned to unit 3.
- ammonia 31 and carbon dioxide 15 can feed a urea production unit 35.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Carbon And Carbon Compounds (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1256003A FR2992307B1 (fr) | 2012-06-25 | 2012-06-25 | Procede et installation pour la production combinee de gaz de synthese d'ammoniac et de dioxyde de carbone |
| PCT/FR2013/051285 WO2014001672A1 (fr) | 2012-06-25 | 2013-06-06 | Procédé et installation pour la production combinée de gaz de synthèse d'ammoniac et de dioxyde de carbone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2864240A1 true EP2864240A1 (fr) | 2015-04-29 |
Family
ID=46785669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13733351.4A Withdrawn EP2864240A1 (fr) | 2012-06-25 | 2013-06-06 | Procédé et installation pour la production combinée de gaz de synthèse d'ammoniac et de dioxyde de carbone |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9206041B2 (fr) |
| EP (1) | EP2864240A1 (fr) |
| CN (1) | CN104411622A (fr) |
| FR (1) | FR2992307B1 (fr) |
| WO (1) | WO2014001672A1 (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11211625B2 (en) | 2016-04-21 | 2021-12-28 | Fuelcell Energy, Inc. | Molten carbonate fuel cell anode exhaust post-processing for carbon dioxide |
| JP6799078B2 (ja) | 2016-04-29 | 2020-12-09 | フュエルセル エナジー, インコーポレイテッドFuelcell Energy, Inc. | 二酸化炭素捕捉を高めるためのアノード排ガスのメタン化 |
| DK3401280T3 (da) | 2017-05-11 | 2022-03-21 | Gascontec Gmbh | Fremgangsmåde til fremstilling af ammoniak |
| CN107337178B (zh) * | 2017-06-05 | 2020-01-14 | 华南理工大学 | 一种炼油厂psa解吸气及催化再生烟气的回收再利用工艺 |
| WO2020112895A1 (fr) | 2018-11-30 | 2020-06-04 | Exxonmobil Research And Engineering Company | Motif de catalyseur de reformage pour pile à combustible fonctionnant avec une utilisation améliorée du co2 |
| JP7286769B2 (ja) | 2018-11-30 | 2023-06-05 | エクソンモービル・テクノロジー・アンド・エンジニアリング・カンパニー | 溶融炭酸塩型燃料電池のカソード集電体構造 |
| SG11202105644RA (en) | 2018-11-30 | 2021-06-29 | Exxonmobil Res & Eng Co | Flow field baffle for molten carbonate fuel cell cathode |
| KR102861227B1 (ko) | 2019-11-26 | 2025-09-18 | 엑손모빌 테크놀로지 앤드 엔지니어링 컴퍼니 | 연료 전지 모듈 조립체 및 이를 사용하는 시스템 |
| JP7465966B2 (ja) | 2019-11-26 | 2024-04-11 | エクソンモービル テクノロジー アンド エンジニアリング カンパニー | 平行な流れのための外部マニホールドを有する燃料電池アセンブリ |
| KR102839912B1 (ko) * | 2020-03-11 | 2025-07-29 | 퓨얼셀 에너지, 인크 | 탄소 포집을 위한 증기 메탄 개질 유닛 |
| EP4213970A1 (fr) * | 2020-09-21 | 2023-07-26 | Topsoe A/S | Amélioration de la pureté d'un flux riche en co2 |
| CN113184805A (zh) * | 2021-04-27 | 2021-07-30 | 陕西东鑫垣化工有限责任公司 | 一种热解煤气综合利用及固碳工艺 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1268428A (fr) * | 1984-10-22 | 1990-05-01 | John Brian Hansen Johnson | Separation d'elements gazeux |
| US4963339A (en) * | 1988-05-04 | 1990-10-16 | The Boc Group, Inc. | Hydrogen and carbon dioxide coproduction |
| FR2877939B1 (fr) | 2004-11-16 | 2007-02-02 | Air Liquide | Procede et installation pour la production combinee d'hydrogene et de dioxyde de carbone |
| KR101304652B1 (ko) * | 2005-06-06 | 2013-09-05 | 레르 리키드 쏘시에떼 아노님 뿌르 레?드 에렉스뿔라따시옹 데 프로세데 조르즈 클로드 | 수소 및 일산화탄소의 동시적 제조 방법 |
| FR2916264A1 (fr) * | 2006-12-21 | 2008-11-21 | Air Liquide | Procede de separation d'un melange de monoxyde de carbone, de methane, d'hydrogene et eventuellement d'azote par distillation cryogenique |
| US8394174B2 (en) * | 2009-05-18 | 2013-03-12 | American Air Liquide, Inc. | Processes for the recovery of high purity hydrogen and high purity carbon dioxide |
| US9321655B2 (en) * | 2009-08-20 | 2016-04-26 | Kellogg Brown & Root Llc | Systems and methods for producing syngas and products therefrom |
| US8221524B2 (en) * | 2009-10-23 | 2012-07-17 | Guild Associates, Inc. | Oxygen removal from contaminated gases |
| FR2958280A1 (fr) | 2010-03-30 | 2011-10-07 | Air Liquide | Procede pour une production d'hydrogene avec emissions de co2 reduites |
| FR2961802A1 (fr) * | 2010-06-29 | 2011-12-30 | Air Liquide | Procede de production d'hydrogene combinee a une capture de dioxyde de carbone |
| EP2404869A1 (fr) * | 2010-07-06 | 2012-01-11 | Ammonia Casale S.A. | Procédé de production d'un gaz ammoniac de synthèse |
| US8752390B2 (en) * | 2010-07-13 | 2014-06-17 | Air Products And Chemicals, Inc. | Method and apparatus for producing power and hydrogen |
| US8535638B2 (en) * | 2010-11-11 | 2013-09-17 | Air Liquide Large Industries U.S. | Process for recovering hydrogen and carbon dioxide |
-
2012
- 2012-06-25 FR FR1256003A patent/FR2992307B1/fr active Active
-
2013
- 2013-06-06 US US14/408,685 patent/US9206041B2/en not_active Expired - Fee Related
- 2013-06-06 CN CN201380032962.9A patent/CN104411622A/zh active Pending
- 2013-06-06 EP EP13733351.4A patent/EP2864240A1/fr not_active Withdrawn
- 2013-06-06 WO PCT/FR2013/051285 patent/WO2014001672A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2014001672A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2992307B1 (fr) | 2014-08-08 |
| FR2992307A1 (fr) | 2013-12-27 |
| US9206041B2 (en) | 2015-12-08 |
| US20150191351A1 (en) | 2015-07-09 |
| WO2014001672A1 (fr) | 2014-01-03 |
| CN104411622A (zh) | 2015-03-11 |
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