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WO2025093343A1 - Procédé de préparation de méthanol à l'aide de charges d'alimentation renouvelables et/ou d'énergie - Google Patents

Procédé de préparation de méthanol à l'aide de charges d'alimentation renouvelables et/ou d'énergie Download PDF

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Publication number
WO2025093343A1
WO2025093343A1 PCT/EP2024/079630 EP2024079630W WO2025093343A1 WO 2025093343 A1 WO2025093343 A1 WO 2025093343A1 EP 2024079630 W EP2024079630 W EP 2024079630W WO 2025093343 A1 WO2025093343 A1 WO 2025093343A1
Authority
WO
WIPO (PCT)
Prior art keywords
methanol
synthesis gas
amount
methanol synthesis
reactor
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.)
Pending
Application number
PCT/EP2024/079630
Other languages
English (en)
Inventor
Per Juul Dahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Topsoe AS
Original Assignee
Haldor Topsoe AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haldor Topsoe AS filed Critical Haldor Topsoe AS
Publication of WO2025093343A1 publication Critical patent/WO2025093343A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
    • 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
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/061—Methanol production
    • 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
    • C01B2203/12—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
    • C01B2203/1217—Alcohols
    • C01B2203/1223—Methanol

Definitions

  • the present invention is directed to process for the for the preparation of methanol using renewable feed stocks and/or energy .
  • the invention makes use of cracking of prepared methanol to provide additional methanol synthesis gas in situations when provision of feed stock or energy is short .
  • synthesis gas is conventionally prepared by subj ecting hydrocarbon feed of natural gas or higher hydrocarbons to endothermic steam reforming reactions in a fired tubular steam reformer by contact with a steam reforming catalyst .
  • the primary reformed gas is then fed into a secondary adiabatic reformer, wherein part of hydrogen and residual amounts of hydrocarbons in the gas are partial oxidi zed with oxygen in presence of a secondary reforming catalyst .
  • the primary and secondary steam reforming can in large scale methanol synthesis plants be replaced by autothermal reforming (ATR) .
  • ATR autothermal reforming
  • the problem when using renewable feed in the methanol synthesis is that the supply of energy and/or renewable feed variates depending on the natural variations of for instance wind and sun or supply of external carbon oxides . As a result , the flow of fresh methanol synthesis gas produced by means of renewable feed can variate substantially .
  • a make-up gas of fresh synthesis gas must constantly be added into the loop recycle gas .
  • Cox means CO and CO2
  • Power is needed for hydrogen generation and COx needed for the methanol synthesis .
  • the invention reduces the required power consumption at minimum synthesis load, and it removes the need for import of CO2 , CO . It has been suggested to use the MeOH for power generation either in fuel cell or by burning the MeOH and convert the heat into power . There is no standard solution for loss of Cox .
  • the amount of feed gas to the methanol reactor can be controlled by cracking a part of produced methanol to methanol synthesis gas and adding the thus prepared synthesis gas to the incoming feed gas in case of shortage of the feed gas . This ensures both the availability of H 2 , and Cox is ensured as opposed to use methanol to produce power and then use that power to produce Hydrogen
  • COx is required in the methanol synthesis gas .
  • I f the COx feed stops the MeOH production stops .
  • the cracked MeOH gas includes COx and has the correct composition for MeOH synthesis
  • the invention reduces the required power consumption at minimum synthesis load, and it removes the need for import of COx, by using a methanol cracker to generate the needed synthesis gas .
  • the cracker can be in operation constantly at a load corresponding to 10% of the supported methanol synthesis .
  • Methanol cracking is a process that involves breaking down methanol to hydrogen and COx .
  • the process of methanol cracking usually involves heating methanol to high temperatures in the presence of a catalyst .
  • the catalyst helps to facilitate the reaction and increase the yield of the cracked methanol synthesis gas .
  • the cracked methanol gas includes COx and has the correct composition for methanol synthesis .
  • Preferred embodiments of present invention are the following .
  • step (g) adding the cracked methanol synthesis gas from step (f) into the reduced amount of methanol synthesis gas in step (e) .
  • step ( f ) methanol is cracked to provide at least 10% combined methanol synthesis gas plus cracked methanol synthesis gas in step ( g) .
  • methanol synthesis gas load refers to the flow or pressure of synthesis gas used in the production of methanol .
  • the "methanol synthesis gas load” speci fies the amount and composition of syngas fed into the methanol reactor . Controlling the methanol synthesis gas load is crucial for maintaining the optimal reaction conditions , such as temperature , pressure , and reactant ratios , to maximi ze methanol production while minimi zing the formation of unwanted byproducts .
  • the speci fic requirements for the methanol synthesis gas load will depend on the design of the reactor, the catalyst used, and the desired production capacity . To ensure ef ficient and safe methanol production, it is essential to carefully control and monitor the composition and flow rate of the synthesis gas entering the reactor .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un procédé de préparation de méthanol, comprenant les étapes consistant à (a) fournir une quantité de gaz de synthèse de méthanol comprenant de l'hydrogène, du monoxyde de carbone et du dioxyde de carbone ; (b) introduire la quantité de gaz de synthèse de méthanol dans au moins un réacteur de méthanol ; (c) réaliser une réaction catalytique d'au moins une partie du gaz de synthèse de méthanol avec du méthanol ; (d) retirer dudit/desdits réacteur(s) de méthanol le méthanol produit et faire passer le méthanol produit dans une unité de stockage de méthanol ; (e) réduire la quantité de gaz de synthèse de méthanol introduite dans ledit/lesdits réacteur(s) de méthanol et faire passer le produit de méthanol de l'unité de stockage de méthanol vers une unité de craquage catalytique de méthanol ; (f) craquer la partie du méthanol produit retiré dans l'unité de craquage catalytique de méthanol en un gaz de synthèse de méthanol craqué ; et (g) ajouter le gaz de synthèse de méthanol craqué de l'étape (f) dans la quantité réduite de gaz de synthèse de méthanol de l'étape (e).
PCT/EP2024/079630 2023-10-30 2024-10-21 Procédé de préparation de méthanol à l'aide de charges d'alimentation renouvelables et/ou d'énergie Pending WO2025093343A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA202330297 2023-10-30
DKPA202330297 2023-10-30

Publications (1)

Publication Number Publication Date
WO2025093343A1 true WO2025093343A1 (fr) 2025-05-08

Family

ID=93214911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/079630 Pending WO2025093343A1 (fr) 2023-10-30 2024-10-21 Procédé de préparation de méthanol à l'aide de charges d'alimentation renouvelables et/ou d'énergie

Country Status (1)

Country Link
WO (1) WO2025093343A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539244B1 (fr) * 1991-09-10 1996-03-06 Mitsubishi Jukogyo Kabushiki Kaisha Procédé d'alimentation en énergie en utilisant comme posteur le méthanol
WO2023014397A1 (fr) * 2021-08-05 2023-02-09 Infinium Technology, Llc Production et utilisation d'un combustible liquide en tant que vecteur d'hydrogène et/ou de gaz de synthèse
DE102022001997A1 (de) * 2022-06-09 2023-12-14 Olaf Kühl Herstellung von Syngas aus Methanol hergestellt aus Syngas und/oder CO2

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539244B1 (fr) * 1991-09-10 1996-03-06 Mitsubishi Jukogyo Kabushiki Kaisha Procédé d'alimentation en énergie en utilisant comme posteur le méthanol
WO2023014397A1 (fr) * 2021-08-05 2023-02-09 Infinium Technology, Llc Production et utilisation d'un combustible liquide en tant que vecteur d'hydrogène et/ou de gaz de synthèse
DE102022001997A1 (de) * 2022-06-09 2023-12-14 Olaf Kühl Herstellung von Syngas aus Methanol hergestellt aus Syngas und/oder CO2

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