公开(公告)号：US20240182385A1

公开(公告)日：2024-06-06

申请号：US18556174

申请日：2022-04-26

Applicant: TORRGAS TECHNOLOGY B.V.

Inventor： Michiel CRAMWINCKEL

IPC: C07C11/06 ,  C07C1/04

CPC classification number: C07C11/06 ,  C07C1/044 ,  C07C2523/745

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).