公开(公告)号：US20220281788A1

公开(公告)日：2022-09-08

申请号：US17637856

申请日：2020-09-25

Applicant: SHELL OIL COMPANY

Inventor： Jean Paul Andre Marie Joseph Ghislain LANGE ,  Evert VAN DER HEIDE ,  Pieter HUIZENGA ,  Thimo Daniel Jozef TE MOLDER

IPC: C07C29/60 ,  C08H8/00

Abstract: A process for the preparing glycols from a lignocellulosic solid biomass involves contacting the biomass with an organic solvent comprising a low boiling point alcohol and a pre-treatment acid at a temperature in a range from 80 to 220° C. and a pressure in a range from 1 to 50 bara. The resulting mixture, having >20 wt. % water, is separated into a pre-treated solid residue comprising cellulose and a liquid stream comprising dissolved lignin and hemicellulose. The pre-treated solid residue is subjected to a hydrogenolysis reaction, generating a glycols stream, a lights stream, comprising a first portion of organic solvent, and a heavies stream. At least of part of the liquid stream is separated to produce a second portion of organic solvent and a solid residue of lignin and hemicellulose. At least part of the first and second portion of organic solvent is recycled to the contacting step.

公开(公告)号：US20220298089A1

公开(公告)日：2022-09-22

申请号：US17638316

申请日：2020-09-25

Applicant: SHELL OIL COMPANY

Inventor： Jean Paul Andre Marie Joseph Ghislain LANGE ,  Pieter HUIZENGA ,  Evert VAN DER HEIDE ,  Thimo Daniel Jozef TE MOLDER

IPC: C07C29/60

Abstract: A process for preparing glycols from a lignocellulosic solid biomass involves contacting the biomass with an organic solvent comprising a low boiling point alcohol and a pre-treatment acid at a temperature in a range from 80 to 220° C. and a pressure in a range from 1 to 50 bara. The resulting mixture, having less than wt. % water, is separated into a pre-treated solid residue comprising cellulose and a liquid stream comprising dissolved lignin. The pre-treated solid residue is subjected to a hydrogenolysis reaction. generating a glycols stream, a lights stream, comprising a first portion of organic solvent, and a heavies stream. At least part of the liquid stream is separated to produce a second portion of organic solvent and a lignin stream. At least part of the first and second portions of organic solvent is recycled to the contacting step.