WO2024030036A1 - Décarbonisation par intégration de carbohydrogène-oxygène ajustable assistée par énergie solaire en carbone solide et gaz de synthèse enrichi - Google Patents
Décarbonisation par intégration de carbohydrogène-oxygène ajustable assistée par énergie solaire en carbone solide et gaz de synthèse enrichi Download PDFInfo
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- WO2024030036A1 WO2024030036A1 PCT/QA2023/050012 QA2023050012W WO2024030036A1 WO 2024030036 A1 WO2024030036 A1 WO 2024030036A1 QA 2023050012 W QA2023050012 W QA 2023050012W WO 2024030036 A1 WO2024030036 A1 WO 2024030036A1
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- syngas
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- steam
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 106
- 239000007787 solid Substances 0.000 title claims abstract description 57
- 238000005262 decarbonization Methods 0.000 title description 11
- 239000001301 oxygen Substances 0.000 title description 11
- 229910052760 oxygen Inorganic materials 0.000 title description 11
- 230000010354 integration Effects 0.000 title description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 228
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000007789 gas Substances 0.000 claims abstract description 133
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 115
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 114
- 239000000203 mixture Substances 0.000 claims abstract description 52
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 48
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 52
- 238000005868 electrolysis reaction Methods 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 20
- 229910001868 water Inorganic materials 0.000 claims description 20
- 239000002699 waste material Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001991 steam methane reforming Methods 0.000 claims description 13
- 238000002407 reforming Methods 0.000 claims description 9
- 239000006229 carbon black Substances 0.000 claims description 7
- 239000002041 carbon nanotube Substances 0.000 claims description 7
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
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- 229910021389 graphene Inorganic materials 0.000 claims description 6
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- -1 and the steam Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
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Classifications
-
- 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
-
- 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
-
- 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
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0238—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a carbon dioxide reforming step
-
- 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
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0244—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being an autothermal reforming step, e.g. secondary reforming processes
-
- 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
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
Definitions
- CO2 pipelines associated with carbon capture, utilization, and storage (CCUS).
- the CO2 pipelines may collect CO2 emissions (primarily from power plants and industrial sources) and deliver them for use mostly in enhanced oil recovery (EOR) and storage in geological formations.
- EOR enhanced oil recovery
- the present disclosure generally relates to an integrated system and method for decarbonization that uses solar energy, CO2, CH4, and/or H2O to produce value-added solid carbon and enriched syngas.
- a system for decarbonization may include an allocation control system configured to receive oxygen gas, methane gas, carbon dioxide gas, and steam, determine a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam, and mix the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream.
- At least a portion of the carbon dioxide gas may be supplied from a carbon dioxide gas pipeline delivering carbon dioxide containing wastes generated from one or more industrial facilities.
- the system may further include a syngas and carbon generator configured to receive the mixture stream from the allocation control system, and generate syngas and solid carbon using the received mixture stream.
- the syngas may include hydrogen gas and carbon monoxide gas.
- the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be determined using an atomic tracking model based on a predetermined condition for the syngas and the solid carbon to be generated by the syngas and carbon generator.
- a method for decarbonization may include receiving oxygen gas, methane gas, carbon dioxide gas, and steam, determining a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam; mixing the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream; and generating syngas and solid carbon using the generated mixture stream.
- At least a portion of the carbon dioxide gas may be supplied from a carbon dioxide gas pipeline delivering carbon dioxide containing wastes generated from one or more industrial facilities.
- the syngas may include hydrogen gas and carbon monoxide gas.
- the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be determined using an atomic tracking model based on a predetermined condition for the syngas and the solid carbon to be generated.
- Fig. 1 is a diagram of an example system for decarbonization according to an example of the present disclosure.
- Fig. 2 is a graph showing the effect of CO2:CH4 molar ratio in the feed on H2:CO ratio (r), CO (d), and Solid Carbon Formation (e) for a CH4 and CO2 feed.
- FIG. 3 is a flow chart illustrating an example process of operating the system of Fig. 1 according to an example of the present disclosure.
- Fig. 4 is a diagram illustrating an industrial facility combined with the system 100 of Fig. 1 according to an example of the present disclosure.
- the present disclosure generally relates to an integrated system and method for decarbonization that may use solar energy, carbon dioxide (CO2), methane (CH4), and/or steam (FEO) to produce value-added solid carbon and enriched syngas.
- CO2 carbon dioxide
- CH4 methane
- FEO steam
- CO2 pipelines associated with carbon capture, utilization, and storage (CCUS).
- the CO2 pipelines may collect CO2 emissions (e.g., from power plants and industrial sources) and deliver them for use in enhanced oil recovery (EOR) and storage in geological formations.
- EOR enhanced oil recovery
- Natural gas pipelines are among the most ubiquitous infrastructures in the energy sector. For instance, the United States has a three-million-mile natural gas pipeline that delivers about 30 trillion cubic feet of gas to approximately 80 million customers.
- the composition of natural gas transported in pipeline varies. For instance, one reported composition contains 95.4% methane and 2.0% CO2.
- a typical CO2 pipeline collects CO2 -containing wastes from the power plants and industrial facilities.
- the waste streams are treated (to enhance the CO2 concentration or remove objectionable species) prior to feeding to the CO2 pipeline.
- the waste streams may be fed to the pipeline in their raw composition.
- the CO2 composition in the pipeline may range from 75.00 to 99.95 mol%.
- C Ch-monetization technologies can substantially reduce the carbon footprint to value-added solid carbon.
- the CARbon GENerator (CARGEN) technology has evolved the DRM process into a two-stage reaction system that produces high-quality solid carbon (e.g., MWCNT) and tunable syngas, hydrogen, or value-added chemicals.
- MWCNT solid carbon
- tunable syngas, hydrogen, or value-added chemicals The production of solid carbon serves as promising carbon capture and sequestration technique and the value of products such as MWCNT and syngas offer significant economic benefits.
- Tunable CCh-monetization may enable at least a 50% reduction in energy requirement with at least 65% CO2 conversion compared to the DRM process.
- aspects of the present disclosure may provide a distributed network of DECARBonization via Solar-assisted Tunable Carbon-Hydrogen-Oxygen Integration to Solid Carbon and Enriched Syngas (“DECARBS-TCHOISCES”) that may allow the processing/industrial facilities to not just export the wastes to the CO2 pipelines but to also import CCh-containing wastes and monetize them to syngas (that can be used in the processing facilities) and solid carbon with unique qualities (including lowering the LCA- based carbon footprint of the system).
- DECARBS-TCHOISCES Solar-assisted Tunable Carbon-Hydrogen-Oxygen Integration to Solid Carbon and Enriched Syngas
- Fig. 1 illustrates a diagram of an example system 100 for decarbonization according to an example of the present disclosure.
- the system 100 may include an allocation control system 110 and a syngas and carbon generator 120.
- the allocation control system 110 may receive oxygen gas (O2), methane gas (CH4), carbon dioxide gas (CO2), and steam (FEO), and determine a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam.
- O2 oxygen gas
- CH4 methane gas
- CO2 carbon dioxide gas
- FEO steam
- the carbon dioxide gas may be supplied from a carbon dioxide gas pipeline delivering carbon dioxide containing wastes generated from one or more industrial facilities.
- the system 100 may further include a CO2 separator 105.
- CCh-containing industrial wastes may be collected and fed to the CO2 separator 105 (e.g., absorption/desorption) to separate carbon dioxide gas from other gas in the CCh-containing industrial wastes.
- the carbon dioxide may be supplied from any other suitable source.
- the methane may be supplied from a natural gas pipeline. In other examples, the methane may be supplied from any other suitable source.
- the allocation control system 110 may further mix the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream.
- the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be mixed according to the determined ratio by adjusting a flow rate of at least one or all of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam.
- the syngas and carbon generator 120 may receive the mixture stream from the allocation control system 110, and generate syngas and solid carbon using the received mixture stream.
- the syngas may include hydrogen gas (H2) and carbon monoxide gas (CO).
- the syngas may further include H2O, O2, CO2, CH4, and/or C1-C5 (traces).
- the H2 to CO ratio in the syngas may be in the range of 0.01-99 (molar).
- the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be determined using an atomic tracking model based on a predetermined condition for the syngas and the solid carbon to be generated by the syngas and carbon generator 120.
- the predetermined condition for the solid carbon and syngas may refer to particular target carbon material quality and syngas quality.
- the predetermined condition for the solid carbon may be a specific composition of the solid carbon and/or different allotropes of carbon.
- the specific composition of the solid carbon that can be produced from the system 100 may include at least one of carbon black, graphitic carbon, carbon nanotube (e.g., MWCNTs), graphene, and amorphous carbon.
- the predetermined condition for the syngas may be a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO).
- the atomic tracking model may use the following chemical equation: Equation (1)
- Equation (1) a, b, c, d, and e are coefficients, and r is a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO).
- the coefficients a, b, and c may be known.
- the coefficients d, r*d, and e can be determined through atomic balances.
- the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be determined by determining the coefficients of a, b, and c based on a predetermined value of d, e, and/or r. For example, for desired specifications/conditions of d, e, and r, Equations 5-7 can be solved to determine the unique values of a, b, and c for tuning the feedstock.
- reaction data/ kinetic data may be used to target a particular quality of solid carbon material.
- a specific composition may be needed to produce carbon black, and other specific compositions may be needed to produce graphite, carbon nanotubes, and graphene. Therefore, the abovediscussed bottom-up approach algorithm with feedback may be used that is dependent on the quality of the carbon material while governing the quantity and quality of CO2 streams imported from the network. Similarly, this bottom-up approach may be used to identify the feed composition to target a particular syngas quality.
- the syngas and carbon generator 120 may generate the syngas using at least one of a Steam Methane Reforming (SMR) technique, a Partial Oxidation (POx) technique (or combinations such as auto-thermal reforming (ATR)) and a Dry Reforming of Methane (DRM) technique.
- SMR Steam Methane Reforming
- POx Partial Oxidation
- ATR auto-thermal reforming
- DRM Dry Reforming of Methane
- syngas and carbon generator 120 may generate the solid carbon using a carbon generator (CARGEN) reactor.
- the system 100 may further include a thermal storage and dispatch system 130.
- the thermal storage and dispatch system 130 may be supplied with water and produce steam using the water. The steam produced by the thermal storage and dispatch system 130 may be supplied to the allocation control system 110 as shown in Fig. 1.
- the thermal storage and dispatch system 130 may extract heat from the syngas and carbon generator 120 when the syngas and carbon generator 120 is in an exothermic state, and supply heat to the syngas and carbon generator 120 when the syngas and carbon generator 120 is in an endothermic state. This may minimize external heating and cooling.
- the system 100 may further include a thermal solar collector 135 that is used with the thermal storage and dispatch system 130.
- the thermal solar collector 135 may collect heat by absorbing solar energy (e.g., sunlight) and supply the collected heat to the thermal storage and dispatch system 130.
- the thermal storage and dispatch system 130 can supply the heat from the thermal solar collector 135 to the syngas and carbon generator 120 when the syngas and carbon generator 120 is in an endothermic state.
- the system 100 may include a solar water electrolysis system 140.
- the solar water electrolysis system 140 may include a solar water-electrolysis device 142.
- the solar water-electrolysis device 142 may be supplied with water and produce hydrogen gas and oxygen gas via electrolysis of the water using solar energy.
- the solar water electrolysis system 140 may further include a hydrogen storage/dispatch unit 144 and an oxygen storage/dispatch unit 146.
- the hydrogen gas produced by the solar water-electrolysis device 142 may be stored in the hydrogen storage/dispatch unit 144, and the oxygen gas produced by the solar water-electrolysis device 142 may be stored in the oxygen storage/dispatch unit 146.
- the oxygen stored in the oxygen storage/dispatch unit 146 may be supplied to the allocation control system 110.
- the oxygen utilized for co-production of syngas and solid carbon may be completely or partially obtained from the solar water electrolysis system 140.
- the solar water electrolysis system 140 may further include a solar photovoltaic (PV) cell 148.
- the solar PV cell 148 may supply electricity to the solar water electrolysis system 140.
- Fig. 3 is a high-level representation of the flowchart governing/managing the real-time tuning and control system.
- a desired flowrate of syngas, desired H2:CO ratio, desired quality of solid carbon, sampled composition from CO2 pipeline, and/or sampled composition from CH4 source may be provided as an input, and a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam may be determined using an atomic tracking (and C- H-0 symbiosis) model based on the provided input.
- the solar water electrolysis system may be tuned, and the flowrates of the carbon dioxide gas and the methane gas may be tuned. Also, in some examples, this might be validated through a kinetic model. In some examples, various combinations of reaction pathways, conditions, and catalysts can be optimized to provide the kinetics needed to achieve the targets. If the product specifications for the syngas and solid carbon are met, the system may implement the tuning and operate the allocation control system and the syngas and carbon generator accordingly. If not, the step may go back to the tuning step.
- the system 100 may be part of one of the one or more industrial facilities 300 as shown in Fig. 4. This may allow the one of the one or more industrial facilities 300 to provide and receive the carbon dioxide containing wastes at the same time.
- a slipstream from the syngas produced from the system 100 can be utilized for power generation onsite or for heating purposes.
- a slipstream from the syngas produced from the system 100 can be used for the production of hydrogen using appropriate separation processes.
- the system 100 of the present disclosure may source its reactants from natural gas, shale gas, flare gas, furnace gases, tail gases, landfill gases, biodigesters, producer gas from biomass and coal gasification, and/or municipal waste gases.
- the system 100 of the present disclosure may purify any material streams as necessary.
- aspects of the present disclosure may allow a tuned feed to be supplied to a syngas and carbon generator that can operate using multiple reforming and deposition techniques. Since some of these techniques may be endothermic and others may be exothermic, external heating and cooling utilities may be minimized through heat integration via a thermal storage and dispatch system, which may extract heat when the system is exothermic and provide heat when the system is endothermic. Thermal solar collectors may be also integrated with the thermal storage and dispatch system.
- aspects of the present disclosure may uniquely address the integration of CO2 pipelines with the critical infrastructure of natural/shale gas, CO2 monetization technologies, processing facilities, solar-assisted reforming, and engineered production of solid carbon and syngas.
- the specific application involving the CO2 pipelines may enable a novel type of industrial symbiosis.
- the use of C-H-0 symbiosis via multi-scale atomic targeting may lead to unique and unexpected benefits, such as an ability to reach very high H2:CO ratios, carbon sequestration, and synergistic interrelationships.
- the use of the aforementioned approach may also help in targeting particular and very specific forms of carbon allotropes using the above-discussed algorithm/model.
- the method could take inputs from the reaction/kinetics of various carbon allotropes to decide the quality and quantity of the various exchange streams (including those imported from CO2 network) that are fed to the process plants.
- a system comprises: an allocation control system configured to: receive oxygen gas, methane gas, carbon dioxide gas, and steam, wherein at least a portion of the carbon dioxide gas is supplied from a carbon dioxide gas pipeline delivering carbon dioxide containing wastes generated from one or more industrial facilities; determine a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam; and mix the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream; and a syngas and carbon generator configured to: receive the mixture stream from the allocation control system; and generate syngas and solid carbon using the received mixture stream, wherein the syngas comprises hydrogen gas and carbon monoxide gas; wherein the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam is determined using an atomic tracking model based on a predetermined condition for the syngas and the solid carbon to be generated by the syngas and carbon generator.
- Embodiment 2 The system of embodiment 1, wherein the atomic tracking model uses the following chemical equation: CH4 + a CO2 + b H2O + c O2 d CO + r*d H2 + e Cs, where a, b, c, d, and e are coefficients, and r is a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO).
- Embodiment 3 The system of embodiment 2, wherein the determining the proper ratio comprises determining the coefficients of a, b, and c based on a predetermined value of d, e, and/or r.
- Embodiment 4 The system of any one of embodiments 1-3, wherein the syngas and carbon generator is configured to generate the syngas using at least one of a Steam Methane Reforming (SMR) technique, a Partial Oxidation (POx) technique, and a Dry Reforming of Methane (DRM) technique.
- SMR Steam Methane Reforming
- POx Partial Oxidation
- DRM Dry Reforming of Methane
- Embodiment 5 The system of any one of embodiments 1-4, wherein the syngas and carbon generator is configured to generate the solid carbon using a carbon generator (CARGEN) reactor.
- CARGEN carbon generator
- Embodiment 6 The system of any one of embodiments 1-5, wherein the system further comprises a thermal storage and dispatch system configured to: extract heat when the syngas and carbon generator is in an exothermic state; and supply heat when the syngas and carbon generator is in an endothermic state.
- a thermal storage and dispatch system configured to: extract heat when the syngas and carbon generator is in an exothermic state; and supply heat when the syngas and carbon generator is in an endothermic state.
- Embodiment 7 The system of any one of embodiments 1-6, wherein the predetermined condition for the solid carbon comprises a specific composition of the solid carbon.
- Embodiment 8 The system of embodiment 7, wherein the specific composition of the solid carbon comprises at least one of carbon black, graphite, carbon nanotube, and graphene.
- Embodiment 9 The system of any one of embodiments 1-8, wherein the predetermined condition for the syngas comprises a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO)
- Embodiment 10 The system of any one of embodiments 1-9, wherein mixing the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream comprises adjusting a flow rate of at least one of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam.
- Embodiment 11 The system of any one of embodiments 1-10, wherein the system is part of one of the one or more industrial facilities, thereby allowing the one of the one or more industrial facilities to provide and receive the carbon dioxide containing wastes at the same time.
- Embodiment 12 The system of any one of embodiments 1-11, further comprising a solar water electrolysis system including a solar water-electrolysis device, wherein the solar water-electrolysis device is configured to produce hydrogen gas and the oxygen gas via electrolysis of water using solar energy.
- Embodiment 13 The method comprises: receiving oxygen gas, methane gas, carbon dioxide gas, and steam, wherein at least a portion of the carbon dioxide gas is supplied from a carbon dioxide gas pipeline delivering carbon dioxide containing wastes generated from one or more industrial facilities; determining a proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam; mixing the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream; generating syngas and solid carbon using the generated mixture stream, wherein the syngas comprises hydrogen gas and carbon monoxide gas; wherein the proper ratio of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam is determined using an atomic tracking model based on a predetermined condition for the syngas and the solid carbon to be generated.
- Embodiment 14 The method of embodiment 13, wherein the atomic tracking model uses the following chemical equation: CH4 + a CO2 + b H2O + c O2 d CO + r*d H2 + e Cs, where a, b, c, d, and e are coefficients, and r is a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO).
- Embodiment 15 The method of embodiment 14, wherein the determining the proper ratio comprises determining the coefficients of a, b, and c based on a predetermined value of d, e, and/or r.
- Embodiment 16 The method of any one of embodiments 13-15, wherein the predetermined condition for the solid carbon comprises a specific composition of the solid carbon.
- Embodiment 17 The method of embodiment 16, wherein the specific composition of the solid carbon comprises at least one of carbon black, graphite, carbon nanotube, and graphene.
- Embodiment 18 The method of any one of embodiments 13-17, wherein the predetermined condition for the syngas comprises a ratio between the hydrogen gas (H2) to the carbon monoxide gas (CO)
- Embodiment 19 The method of any one of embodiments 13-18, wherein mixing the oxygen gas, the methane gas, the carbon dioxide gas, and the steam according to the determined ratio to generate a mixture stream comprises adjusting a flow rate of at least one of the oxygen gas, the methane gas, the carbon dioxide gas, and the steam.
- Embodiment 20 The method of any one of embodiments 13-19, wherein the generating the syngas comprises using at least one of a Steam Methane Reforming (SMR) technique, a Partial Oxidation (POx) technique, and a Dry Reforming of Methane (DRM) technique.
- SMR Steam Methane Reforming
- POx Partial Oxidation
- DRM Dry Reforming of Methane
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Abstract
Un système comprend un système de commande d'attribution conçu pour recevoir de l'oxygène gazeux, du méthane gazeux, du dioxyde de carbone gazeux et de la vapeur, déterminer un rapport propre de l'oxygène gazeux, du méthane gazeux, du dioxyde de carbone gazeux et de la vapeur, et mélanger l'oxygène gazeux, le méthane gazeux, le dioxyde de carbone gazeux et la vapeur selon le rapport déterminé pour générer un courant de mélange. Le système comprend en outre un générateur de gaz de synthèse et de carbone configuré pour : recevoir le courant de mélange provenant du système de commande d'attribution, et générer du gaz de synthèse et du carbone solide à l'aide du courant de mélange reçu, le gaz de synthèse comprenant de l'hydrogène gazeux et du monoxyde de carbone gazeux. Le rapport propre de l'oxygène gazeux, du méthane gazeux, du dioxyde de carbone gazeux et de la vapeur est déterminé à l'aide d'un modèle de suivi atomique basé sur une condition prédéterminée pour le gaz de synthèse et le carbone solide à générer par le générateur de gaz de synthèse et de carbone.
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