公开(公告)号：US20140221686A1

公开(公告)日：2014-08-07

申请号：US14222967

申请日：2014-03-24

Applicant: Arkema Inc.

Inventor： Steven G. Schon

IPC: C07C51/48 ,  C07C45/80

CPC classification number: C07C51/48 ,  C07C45/80 ,  C07C57/04 ,  C07C53/08 ,  C07C53/122 ,  C07C47/22 ,  C07C47/21

Abstract: Improvement in separating lower carboxylic acids from aqueous streams via liquid-liquid extraction with pressurized liquefied propylene and/or propane, wherein carboxylic acid is transferred from the aqueous phase into the liquid solvent phase (extract). The extracted carboxylic acids are recovered as a liquid concentrate by evaporating off the propylene and/or propane solvent from the extract at mild temperatures.

Abstract translation: 通过使用加压液化丙烯和/或丙烷的​​液 - 液萃取分离低级羧酸与水流的改进，其中羧酸从水相转移到液体溶剂相（萃取物）中。 通过在温和的温度下从提取物中蒸发丙烯和/或丙烷溶剂，将萃取的羧酸作为液体浓缩物回收。

公开(公告)号：US09156769B2

公开(公告)日：2015-10-13

申请号：US14222967

申请日：2014-03-24

Applicant: Arkema Inc.

Inventor： Steven G. Schon

IPC: C07C51/48 ,  C07C45/80

CPC classification number: C07C51/48 ,  C07C45/80 ,  C07C57/04 ,  C07C53/08 ,  C07C53/122 ,  C07C47/22 ,  C07C47/21

Abstract: Improvement in separating lower carboxylic acids from aqueous streams via liquid-liquid extraction with pressurized liquefied propylene and/or propane, wherein carboxylic acid is transferred from the aqueous phase into the liquid solvent phase (extract). The extracted carboxylic acids are recovered as a liquid concentrate by evaporating off the propylene and/or propane solvent from the extract at mild temperatures.

Abstract translation: 通过使用加压液化丙烯和/或丙烷的​​液 - 液萃取分离低级羧酸与水流的改进，其中羧酸从水相转移到液体溶剂相（萃取物）中。 通过在温和的温度下从提取物中蒸发丙烯和/或丙烷溶剂，将萃取的羧酸作为液体浓缩物回收。

公开(公告)号：US10807949B2

公开(公告)日：2020-10-20

申请号：US16315689

申请日：2017-01-19

Applicant: Arkema Inc.

Inventor： Steven G. Schon ,  Rose Aguiar ,  Jerome Amstutz ,  Sylvie Caumia ,  Andrew R. Goddard ,  Shashank N. Shah ,  Gary S. Smith

IPC: B01D3/14 ,  C07C319/28 ,  B01D3/32 ,  B01D3/42 ,  C07C319/30 ,  C10G29/28 ,  C10G7/00

Abstract: Aspects of the present invention relate to systems and processes for obtaining desired mercaptans or thiophenes from a feed stream containing a mixture of mercaptans, thiophenes and other components. In one aspect of the invention, a system for separating one or more components from a feed stream of mixed mercaptans includes one or more distillation columns in connection with a feed containing mercaptans, the distillation column having a rectification section, a stripping section, and a feed side section separated from a side draw section by a dividing wall that extends from the rectification section to the stripping section. The distillation column further being in connection with a condenser and a reboiler; and a distillate stream, a side drawn stream, and a bottoms stream.