公开(公告)号：US20220388933A1

公开(公告)日：2022-12-08

申请号：US17776268

申请日：2020-12-16

Applicant: SHELL OIL COMPANY

Inventor： Evert VAN DER HEIDE ,  Pieter HUIZENGA ,  Kai FISCHER ,  Carmelo PEREZ GOLF ,  David PINILLA GARCIA

IPC: C07C29/84

Abstract: A process for the production of a high purity first diol from a product stream comprising two or more C2 to C7 diols, said process comprising the steps of: (i) providing the product stream to a first distillation column; (ii) providing an extractant selected from the group of C3 to C6 sugar alcohols and mixtures thereof to the first distillation column; (iii) operating the first distillation column to obtain a first bottoms stream comprising at least a first diol and the extractant; (iv) providing the first bottoms stream to a second distillation column operating to obtain a second top stream comprising the first diol and diols with atmospheric boiling points at least 10° C. higher than the first diol, and (v) providing the second top stream to a third distillation column to obtain a third top stream comprising the first diol; wherein the product stream comprises 0.1 to 10 wt % of diols with atmospheric boiling points at least 10° C. higher than the first diol, calculated upon the total weight of C2 to C7 diols in the product stream.

公开(公告)号：US20190202764A1

公开(公告)日：2019-07-04

申请号：US16303250

申请日：2017-05-19

Applicant: SHELL OIL COMPANY

Inventor： Kai Jürgen FISCHER ,  Pieter HUIZENGA ,  Carmelo PEREZ GOLF ,  Evert VAN DER HEIDE

IPC: C07C29/84 ,  C07C29/80

CPC classification number: C07C29/84 ,  C07C29/80 ,  C07C31/202

Abstract: The invention provides a process for the production of a high purity first diol, selected from the group consisting of C2 to C7 diols from a product stream comprising two or more C2 to C7 diols, said process comprising the steps of: (i) subjecting the product stream to distillation in a first distillation column to provide a bottoms stream comprising high boiling by-products and a top stream comprising a mixture comprising the two or more C2 to C7 diols; (ii) providing said mixture comprising the two or more C2 to C7 diols as a feed to a second distillation column; (iii) providing a feed comprising an extractant to the second distillation column above the mixture comprising the two or more C2 to C7 diols; (iv) operating the second distillation column at a temperature in the range of from 50 to 250° C. and a pressure in the range of from 0.1 to 400 kPa; (v) removing a stream comprising the first diol and the extractant as a bottoms stream from the second distillation column; and (vi) subjecting the stream comprising the first diol and the extractant to distillation in a third distillation column to provide a top stream comprising the first diol in high purity, wherein the extractant is selected from the group of C3 to C6 sugar alcohols and mixtures thereof.

公开(公告)号：US20200325090A1

公开(公告)日：2020-10-15

申请号：US16303196

申请日：2017-05-19

Applicant: SHELL OIL COMPANY

Inventor： Kai Jürgen FISCHER ,  Carmelo PEREZ GOLF ,  Pieter HUIZENGA

IPC: C07C29/84

Abstract: The invention provides a process for the separation of a first diol, selected from the group consisting of C3 to C7 diols from a first mixture comprising two or more C3 to C7 diols, said process comprising the steps of: (i) providing said first mixture comprising two or more C3 to C7 diols as a feed to a first distillation column; (ii) providing a feed comprising an extractant to the first distillation column above the first mixture; (iii) operating the first distillation column at a temperature in the range of from 50 to 250° C. and a pressure in the range of from 0.1 to 400 kPa; (iv) removing a stream comprising the first diol and the extractant as a bottoms stream from the first distillation column; and (v) subjecting the stream comprising the first diol and the extractant to distillation in a second distillation column to provide a stream from the top-section of the second distillation column comprising the first diol in high purity and a stream from the bottom section of the second distillation column comprising a used extractant stream, wherein the extractant is selected from the group of C3 to C6 sugar alcohols and mixtures thereof, and wherein the first diol is a close-boiler to and/or forms an azeotrope with one or more of the other C3 to C7 diols present in the first mixture

公开(公告)号：US20190062244A1

公开(公告)日：2019-02-28

申请号：US15761616

申请日：2016-09-21

Applicant: SHELL OIL COMPANY

Inventor： Carmelo PEREZ GOLF ,  Evert VAN DER HEIDE ,  Pieter HUIZENGA ,  Kai Jurgen FISCHER

IPC: C07C29/80

Abstract: A process for the production of high purity mono-ethylene glycol (MEG) from a product stream of a saccharide hydrogenolysis process. The process having the steps of: (i) removing solvent from the product stream to provide a solvent-lean product stream; (ii) subjecting the solvent-lean product stream to distillation to provide a bottoms stream comprising high boiling by-products and a top stream comprising a mixture comprising MEG and 1,2-butanediol (1,2-BDO); (iii) providing said mixture having MEG and 1,2-BDO as a feed to a distillation column; (iv) providing a feed comprising an extractant of C3 to C6 alcohols and mixtures thereof to the distillation column above the mixture comprising MEG and 1,2-BDO; (v) removing a stream comprising MEG and the extractant as a bottoms stream from the distillation column; and (vi) subjecting the stream comprising MEG and the extractant to distillation to provide a top stream comprising high purity MEG.

公开(公告)号：US20180079702A1

公开(公告)日：2018-03-22

申请号：US15564438

申请日：2016-04-05

Applicant: SHELL OIL COMPANY

Inventor： Pieter HUIZENGA ,  Kai Jürgen FISCHER ,  Karin BUS ,  Waldo Eugene DE VILLIERS ,  Carmelo PEREZ GOLF

IPC: C07C29/82

CPC classification number: C07C29/82 ,  C07C29/80 ,  C07C31/202

Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a weight ratio of at least 10:1 (MEG:1,2- BDO), said process comprising the steps of; (i) providing the first mixture as a feed to a distillation column at a point in the range of from 20 to 80% of the column height; (ii) operating the distillation at a temperature in the range of from 120 to 190° C. and at a pressure in the range of from 5 kPa to atmospheric pressure; (iii) removing an MEG stream from the distillation column at a point below the point at which the first mixture is fed; (iv) removing an overheads stream comprising an azeotrope of MEG and 1,2-BDO.

公开(公告)号：US20170362150A1

公开(公告)日：2017-12-21

申请号：US15536270

申请日：2015-12-16

Applicant: SHELL OIL COMPANY

Inventor： Kai Jürgen FISCHER ,  Waldo Eugene DE VILLIERS ,  Pieter HUIZENGA ,  Carmelo PEREZ GOLF

IPC: C07C29/82 ,  C07C31/20

CPC classification number: C07C29/82 ,  C07C29/132 ,  C07C29/76 ,  C07C31/202 ,  C07C31/205 ,  C07C31/207

Abstract: The invention provides a process for the separation of MEG from a glycol stream comprising MEG and 1,2-BDO, said process comprising the steps of: (a) providing the glycol stream and an azeotrope-forming agent to a distillation column, (b) subjecting the glycol stream and the azeotrope-forming agent to distillation at a distillation temperature and a distillation pressure; (c) obtaining a first overhead stream comprising an azeotrope of MEG and the azeotrope-forming agent and a first bottoms stream comprising 1,2-BDO; and (d) subjecting the first overhead stream to phase separation in the presence of water to obtain an MEG-rich aqueous stream and an azeotrope-forming agent rich stream, wherein the azeotrope-forming agent is an organic solvent that forms a homogeneous azeotrope with MEG and does not form an azeotrope with 1,2-BDO at the distillation temperature and pressure.