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WO2025181690A1 - Systèmes et procédés de couplage de synthèse d'électrocarburants basée sur l'hydrogène vert avec une synthèse de carburants basée sur la gazéification - Google Patents

Systèmes et procédés de couplage de synthèse d'électrocarburants basée sur l'hydrogène vert avec une synthèse de carburants basée sur la gazéification

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Publication number
WO2025181690A1
WO2025181690A1 PCT/IB2025/052054 IB2025052054W WO2025181690A1 WO 2025181690 A1 WO2025181690 A1 WO 2025181690A1 IB 2025052054 W IB2025052054 W IB 2025052054W WO 2025181690 A1 WO2025181690 A1 WO 2025181690A1
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WO
WIPO (PCT)
Prior art keywords
soec
hydrogen
synthetic gas
gasification
synthesis
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Pending
Application number
PCT/IB2025/052054
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English (en)
Other versions
WO2025181690A4 (fr
Inventor
Gurjot Singh
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Individual
Original Assignee
Individual
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Publication of WO2025181690A1 publication Critical patent/WO2025181690A1/fr
Publication of WO2025181690A4 publication Critical patent/WO2025181690A4/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C25B1/042—Hydrogen or oxygen by electrolysis of water by electrolysis of steam
    • 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
    • C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
    • C01B3/12—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
    • C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
    • C07C29/1516—Multisteps
    • C07C29/1518—Multisteps one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
    • C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
    • C10G2/32—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/021—Process control or regulation of heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/081—Supplying products to non-electrochemical reactors that are combined with the electrochemical cell, e.g. Sabatier reactor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K1/00—Steam accumulators

Definitions

  • the present disclosure relates to the field of gasification-based fuel synthesis. More particularly, the present disclosure relates to a system and a method for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis.
  • gasification may be done in an environment of steam and high-purity oxygen, both of which need to be generated.
  • the R value of the syngas is usually more than 2: Biomass gasification itself gives a ratio ⁇ 2. Water gas shift reaction may be used after the syngas conditioning step to increase the amount of H 2 :
  • the CO 2 produced in this step has to be removed using various methods resulting in a large loss of the carbon that entered the system as biomass.
  • Green hydrogen is produced by electrolysis of water using renewable energy.
  • Renewables such as solar and wind are intermittent, therefore, hydrogen production, when directly coupled with these renewables, is limited to a few hours per day.
  • Round-the-clock renewables such as hydropower are limited by geography.
  • electrolysers, alkaline and proton exchange membrane electrolysers have modest efficiencies (e.g., 55 - 65 %). When coupled directly with intermittent renewables, these electrolysers can only function for a few hours per day and thus need to be oversized by two-three times.
  • An object of the present disclosure is to provide a system for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis.
  • Another object of the present disclosure is to provide a method for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis.
  • Another object of the present disclosure is to provide a system and a method for integration of gasification-based fuel synthesis with green hydrogen produced using renewable energy coupled with Carnot batteries and Solid-Oxide Electrolyser Cells (SOEC), along with capture of CO2 produced during biomass gasification for electro-fuel synthesis.
  • SOEC Solid-Oxide Electrolyser Cells
  • Still another object of the present disclosure is to combine renewable energy with Carnot batteries to provide round-the-clock power and heat to run the SOEC with high efficiency of more than 90% (up to 100%).
  • Yet another object of the present disclosure is to use SOEC in co-electrolysis mode by using steam and power from Carnot Battery and CO2 from gasification for electro-fuel synthesis.
  • Another object of the present disclosure is to use the green hydrogen from SOEC for optimizing the amount of H 2 during gasification-based fuel synthesis.
  • Still another object of the present disclosure is to use the oxygen from SOECs for gasification of biomass in the presence of steam and oxygen.
  • Yet another object of the present disclosure is to recycle and integrate the process heat from biofuel synthesis and electro-fuel synthesis to the Carnot battery to meet the heat/steam requirements of the system, and increase the total efficiency of the system.
  • An aspect of the present disclosure is to provide a systems for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis
  • a systems for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis comprising: an oxygen generator (106) or SOEC (206) configured for oxygen supply; a gasifier (104) configured to receive biomass (102) and oxygen from the oxygen generator (106) or SOEC (206) for producing a raw synthetic gas; one or more apparatus for conditioning of raw synthetic gas (108) by removing impurities to obtain a pure synthetic gas; a water gas shift (110) or hydrogen produced by SOEC (206) for boosting hydrogen and to obtain a final synthetic gas; a hydrocarbon synthesis reactor for synthesizing hydrocarbons from the final synthetic gas; and a means (112) to remove CO2 from the final synthetic gas, wherein the system synthesizes hydrocarbons from the final synthetic gas or syngas produced by gasification and separately synthesis of electrofuels from the hydrogen produced by SOEC (206) and CO2 extracted from syngas (112) via syngas or
  • Another aspect of the present disclosure is to provide a method for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis comprising: a) supplying of biomass (102) and oxygen from SOEC (206) to a gasifier (104) for producing a raw synthetic gas; b) passing the raw synthetic gas through one or more apparatus (108) for removing the impurities and to obtain a pure synthetic gas; c) boosting hydrogen of the pure synthetic gas by a hydrogen from SOEC (206) and removal of CO2 (112) to obtain a final synthetic gas; d) feeding the final synthetic gas or syngas to a hydrocarbon synthesis reactor; e) reaction of CO2 from syngas and H2 from SOEC (206) to produce electrofiiels via syngas or through direct reaction; and f) recycling of heat from both streams (gasification-based fuel synthesis and electrofuels synthesis) to the Carnot Battery to supply various processes such as gasification, CO2 extraction, SOEC and increase the energy efficiency of the process.
  • FIG. 1 illustrates an example representation of a baseline system for gasificationbased fuel synthesis.
  • FIG. 2 illustrates an example representation of a system for gasification-based fuel synthesis integrated with green hydrogen produced by coupling renewable energy and Carnot batteries with Solid-Oxide Electrolyser Cells (SOEC), in accordance with embodiments of the present disclosure.
  • SOEC Solid-Oxide Electrolyser Cells
  • Embodiments of the present disclosure relate to a system and a method for gasification-based fuel synthesis.
  • An embodiment of the present disclosure is to provide systems for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis comprising: an oxygen generator (106) or SOEC (206) configured for oxygen supply; a gasifier (104) configured to receive biomass (102) and oxygen from the oxygen generator (106) or SOEC (206) for producing a raw synthetic gas; one or more apparatus for conditioning of raw synthetic gas (108) by removing impurities to obtain a pure synthetic gas; a water gas shift (110) or hydrogen produced by SOEC (206) for boosting hydrogen and to obtain a final synthetic gas; a hydrocarbon synthesis reactor for synthesizing hydrocarbons from the final synthetic gas; and a means (112) to remove CO2 from the final synthetic gas, wherein the system synthesizes hydrocarbons from the final synthetic gas or syngas produced by gasification and separately synthesis of electrofuels from the hydrogen produced by SOEC (206) and CO2 extracted from syngas (112) via syngas or directly, thus coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis.
  • the SOEC (206) is coupled with Carnot battery (204) which receives renewable power supply from one or more intermittent renewable sources (202).
  • the Carnot battery (204) produces and provides continuous heat and power output to the SOEC (206) for producing oxygen and hydrogen continuously at a high efficiency of more than 90%.
  • the Carnot battery (204) stores electricity in the form of thermal energy using processes such as but not limited to thermal energy storage, pumped thermal energy storage, and liquid air energy storage and combination thereof during the charging cycle.
  • the stored thermal energy is converted back to power using a heat engine (with a round-trip efficiency of 60-70%) during the discharge cycle and the usable heat is also available during the discharge cycle, providing both dispatchable power and heat for a long duration, with the total efficiency of the Carnot battery (combined power and heat) more than 90% (up to 100%).
  • the hydrocarbon synthesis from syngas is happened via methanol- to-gasoline pathway (114), Fischer-Tropsch (FT) reactor (116) or another type of reactor.
  • FT Fischer-Tropsch
  • the heat generated during the hydrocarbon synthesis is recycled back to the system for producing stream to be used by the gasifier (104) and water gas shift (HO).
  • the hydrogen is supplied from the SOEC (206) for boosting hydrogen of the pure synthetic gas or syngas.
  • the H2 from SOEC (206) and CO2 (112) removed from syngas are reacted to produce electrofuels via syngas or through direct reaction to produce electrofuels.
  • Another embodiment of the present disclosure is to provide a method for coupling green hydrogen-based electro-fuel synthesis with gasification-based fuel synthesis comprising: a) supplying of biomass (102) and oxygen from SOEC (206) to a gasifier (104) for producing a raw synthetic gas; b) passing the raw synthetic gas through one or more apparatus (108) for removing the impurities and to obtain a pure synthetic gas; c) boosting hydrogen of the pure synthetic gas by a hydrogen from SOEC (206) and removal of CO2 (112) to obtain a final synthetic gas; d) feeding the final synthetic gas or syngas to a hydrocarbon synthesis reactor; e) reaction of CO2 from syngas and H2 from SOEC (206) to produce electrofuels via syngas or through direct reaction; and f) recycling of heat from both streams (gasification-based fuel synthesis and electrofuels synthesis) to the Carnot Battery to supply various processes such as gasification, CO2 extraction, SOEC and increase the energy efficiency of the process.
  • the synthetic gas comprises a mixture of hydrogen (H 2 ), carbon monoxide (CO), and carbon dioxide (CO 2 ).
  • the carbon dioxide is removed from the syngas (112).
  • the method further comprises formation of syngas or direct e-fiiels from hydrogen and carbon dioxide.
  • FIG. 1 illustrates an example representation of a baseline system 100 for gasificationbased fuel synthesis.
  • the system 100 may include a gasifier 104 that may receive biomass 102 and oxygen from an oxygen generator 106.
  • the gasifier 104 may perform gasification of biomass 102 using steam and oxygen from the oxygen generator 106 to produce synthetic gas.
  • the synthetic gas may include a mixture of hydrogen (H 2 ), carbon monoxide (CO), and carbon dioxide (CO 2 ).
  • the synthetic gas produced by the gasifier 104 may be conditioned 108 to remove impurities like tars and Sulphur compounds.
  • the synthetic gas produced by the gasifier 104 may have a low concentration of H 2 which is boosted using water gas shift 110.
  • CO 2 112 is removed after the water gas shift 110.
  • the carbon conversion efficiency by implementing the system 100 is ⁇ 50%.
  • the final synthetic gas is sent for hydrocarbon synthesis, such as to methanol reactor 114 or Fischer-Tropsch (FT) reactor 116 or another type of reactor.
  • the synthetic gas thus produced may be converted to fuels, for example, methanol using the methanol reactor 114 or the FT reactor 116.
  • the methanol reactor 114 may implement a Methanol-To-Gasoline (MTG) process to convert the methanol to higher carbon chain hydrocarbons.
  • MTG Methanol-To-Gasoline
  • methanol synthesis process may refer to methanol production from the synthetic gas.
  • MTG process may refer to a sustainable process for producing gasoline-range hydrocarbon biofuels. It may be appreciated that steam produced by the methanol reactor 114 may be used by the gasifier 104 and for water gas shift 110.
  • the FT reactor 116 may implement FT synthesis process.
  • FT synthesis process may refer to a collection of chemical reactions that convert the syngas into liquid hydrocarbons.
  • FIG. 2 illustrates an example representation of a system 200 for gasification-based biofuel synthesis by coupling green hydrogen produced using renewable energy and Carnot batteries with Solid-Oxide Electrolyser Cells (SOEC), in accordance with embodiments of the present disclosure.
  • SOEC Solid-Oxide Electrolyser Cells
  • the proposed system 200 may include a gasifier 104 that may receive biomass 102 and oxygen from an SOEC 206.
  • a Carnot battery 204 may receive renewable power supply from one or more intermittent renewable sources 202.
  • the Carnot battery 204 may store electricity in the form of thermal energy using various processes such as but not limited to, thermal energy storage, pumped thermal energy storage, and liquid air energy storage to produce hydrogen during the charge cycle.
  • the stored thermal energy is converted back to power using a heat engine (e.g., Brayton cycle, Rankine cycle, etc.) during the discharge cycle. Residual thermal energy or heat is also available from this process, thus providing both dispatchable power and heat for a long duration.
  • a heat engine e.g., Brayton cycle, Rankine cycle, etc.
  • the Carnot battery 204 may store electrical energy in the form of heat energy during the charging cycle. During discharge, the heat may be converted back to electricity, for example, at an efficiency of 60-70%. In some embodiments, the remaining heat may be used for other purposes within the scope of the present disclosure. In some embodiments, the total efficiency of the Carnot battery 204 may be >90% (up to 100%).
  • the Carnot battery 204 may produce and provide continuous heat and power output to the SOEC 206.
  • the SOEC 206 may produce oxygen and hydrogen from the continuous heat and power received from the Carnot battery 204.
  • the oxygen produced may be sent to the gasifier 104 for gasification, which may completely suffice for the gasification process (with excess to be used as a by-product).
  • the process of gasification may include a series of chemical reactions where the received oxygen produced by the SOEC 206 and steam may be reacted with an organic feed material to convert the feed material to syngas.
  • the feed material may be dry biomass, but not limited to the like.
  • the gasifier 104 may perform gasification of biomass 102 using steam and oxygen from the SOEC 206 to produce synthetic gas.
  • the synthetic gas produced by the gasifier 104 may be conditioned 108 to remove impurities like tars and Sulphur compounds.
  • the synthetic gas produced by the gasifier 104 may have a low concentration of H 2 which is boosted by the hydrogen produced by the SOEC 206.
  • heat from the Carnot battery 204 may be used for separating CO 2 from the synthetic gas.
  • the removed CO 2 may be reacted with the hydrogen produced by the SOEC 206 to produce a second stream of fuels (e.g., synthetic gas or direct e-fiiels). It may be appreciated that due to the removal and utilization of CO 2 112, the carbon conversion efficiency is around 90%, which is much higherthan the carbon conversion efficiency with respect to FIG. 1.
  • the final synthetic gas is sent to the MTG reactor 114 or the FT reactor 116 for production of hydrocarbon fuels. It may be appreciated that heat generated during fuel synthesis from both the streams (gasification and electrofiiels synthesis) may be recycled back to the Carnot battery to be used for the gasifier, CO2 separation and other processes.
  • the present disclosure describes an end-to-end solution wherein the carbon dioxide is captured and utilized during gasification of biomass thereby doubling the carbon utilization efficiency.
  • Biomass gasification is used to produce synthetic gas that can be used for generation of biofuels (or power or other end uses).
  • carbon dioxide is usually removed from synthetic gas before biofuel synthesis to achieve a precise concentration of H 2 .
  • the present disclosure couples green hydrogen produced using Carnot battery and SOEC with CO 2 capture during biomass gasification that leads to unique synergies and emergent properties.
  • the present disclosure utilizes Carnot batteries to eliminate the issue of intermittency of renewables.
  • the present disclosure utilizes Carnot batteries that provide both power and heat to run a Solid-Oxide Electrolyser Cell (SOEC) with high efficiency.
  • SOEC Solid-Oxide Electrolyser Cell
  • the present disclosure provides recycling and storing of the process heat released during the downstream processes back to Carnot batteries to increase the total efficiency of the process.
  • the present disclosure provides SOECs with very high efficiency that can utilize heat and power from Carnot batteries to operate round-the-clock without the need to oversize the electrolysers.
  • the present disclosure allows the whole system to be situated anywhere and function as a complete unit for gasification-based fuel synthesis without the need for any outside ingredient.
  • the present disclosure captures the CO 2 produced during gasification and utilizes it, along with green hydrogen, for synthesis of a parallel stream of electrofiiels thereby doubling the carbon utilization efficiency and potentially the fuel output.
  • the present disclosure utilizes the oxygen produced by SOECs for gasification thereby eliminating the need of an oxygen generator.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

La présente divulgation concerne un système et un procédé de synthèse de carburants basée sur la gazéification, par couplage de celle-ci avec de l'hydrogène vert produit à l'aide d'énergie renouvelable, une batterie de Carnot et une cellule d'électrolyseur à oxyde solide (SOEC), avec une capture de CO2 pendant la gazéification. Le système assure une solution de bout en bout pour la production d'hydrogène vert vingt-quatre heures d'affilée à l'aide de sources d'énergie renouvelable couplées à une batterie de Carnot pour faire fonctionner une SOEC. La SOEC produit de l'oxygène et de l'hydrogène à partir de la chaleur et de l'énergie continues reçues de la batterie de Carnot. L'oxygène est envoyé à un gazéifieur pour gazéification. Le processus de gazéification comprend une série de réactions chimiques dans lesquelles l'oxygène provenant de la SOEC et de la vapeur peut être mis en réaction avec une charge d'alimentation organique pour le convertir en gaz de synthèse, qui est ensuite enrichi en hydrogène produit par la SOEC, afin de produire des carburants. Le CO2 capturé à travers ce procédé est en outre mis en réaction avec de l'hydrogène vert provenant de la SOEC pour produire un flux parallèle d'électrocarburants. La chaleur générée pendant la synthèse de carburants basée sur la gazéification et la synthèse d'électrocarburants est recyclée vers la batterie de Carnot.
PCT/IB2025/052054 2024-02-26 2025-02-26 Systèmes et procédés de couplage de synthèse d'électrocarburants basée sur l'hydrogène vert avec une synthèse de carburants basée sur la gazéification Pending WO2025181690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202411013812 2024-02-26
IN202411013812 2024-02-26

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WO2025181690A1 true WO2025181690A1 (fr) 2025-09-04
WO2025181690A4 WO2025181690A4 (fr) 2025-11-06

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