Title:
PROCESS TO PREPARE LOWER OLEFINS
Document Type and Number:
WIPO Patent Application WO/2022/171906
Kind Code:
A8
Abstract:
The invention is directed to a process to prepare ethylene and propylene from a biomass feedstock wherein the process comprises the following steps: (a) a mild gasification of a torrefied biomass feedstock thereby obtaining a char and a gaseous fraction comprising hydrogen, carbon monoxide and a mixture of gaseous organic compounds; (b) a severe gasification of the gaseous fraction in the absence of the char to obtain a substantially tar-free syngas; (c) a Fischer-Tropsch reaction of the substantially tar-free syngas to obtain a first product mixture comprising of methane and C2+ aliphatic hydrocarbons, and (d) a steam cracking reaction of all or part of the C2+ aliphatic hydrocarbons obtained in step (c) to obtain a second product mixture. Methane as isolated from the first and/or the second product mixture may be combusted to generate heat for the endothermal steam cracking reaction in step (d).
Inventors:
CRAMWINCKEL MICHIEL (NL)
Application Number:
PCT/EP2022/060982
Publication Date:
November 09, 2023
Filing Date:
April 26, 2022
Export Citation:
Assignee:
TORRGAS TECH B V (NL)
International Classes:
C10B49/02; C10G2/00; C10G9/36; C10K3/00; C10J3/00
Attorney, Agent or Firm:
VAN WIJK, Alexander Pieter (NL)
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