公开(公告)号：US11225444B2

公开(公告)日：2022-01-18

申请号：US16471063

申请日：2017-12-19

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Abdullah Saad Al-Dughaiter ,  Shahid Azam ,  Abdulmajeed Mohammed Al-Hamdan ,  Dafer Mubarak Alshahrani ,  Ralf Noack ,  Tobias Meier ,  Gabriel Waurick ,  Heinz Bolt ,  Andreas Meiswinkel ,  Wolfgang Müller ,  Anina Wohl ,  Hans-Jorge Zander

IPC: B01D3/42 ,  C07C7/04

Abstract: A method of column control includes: passing a feed stream and a make-up stream through a column; withdrawing an overhead fraction from the column; purging at least a portion of the overhead fraction; cooling at least a portion of the overhead fraction in a heat exchanger and passing it through a reflux drum; withdrawing a purge stream and a distillate stream from the reflux drum, wherein the distillate stream has a constant flow rate; recycling at least a portion of the distillate stream back to the column; and passing at least a portion of the distillate stream to a downstream process.

公开(公告)号：US20210130265A1

公开(公告)日：2021-05-06

申请号：US16471063

申请日：2017-12-19

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Abdullah Saad Al-Dughaiter ,  Shahid Azam ,  Abdulmajeed Mohammed Al-Hamdan ,  Dafer Mubarak Alshahrani ,  Ralf Noack ,  Tobias Meier ,  Gabriel Waurick ,  Heinz Bolt ,  Andreas Meiswinkel ,  Wolfgang Müller ,  Anina Wohl ,  Hans-Jorge Zander

IPC: C07C7/04 ,  B01D3/42

Abstract: A method of column control includes: passing a feed stream and a make-up stream through a column; withdrawing an overhead fraction from the column; purging at least a portion of the overhead fraction; cooling at least a portion of the overhead fraction in a heat exchanger and passing it through a reflux drum; withdrawing a purge stream and a distillate stream from the reflux drum, wherein the distillate stream has a constant flow rate; recycling at least a portion of the distillate stream back to the column; and passing at least a portion of the distillate stream to a downstream process.