公开(公告)号：US20200039926A1

公开(公告)日：2020-02-06

申请号：US16485464

申请日：2018-05-08

Applicant: Arkema Inc.

Inventor： Jay F. MILLER ,  Gary S. SMITH ,  George C. FORTMAN ,  Vijay R. SRINIVAS

IPC: C07C303/44 ,  C07C309/04

Abstract: Aspects of the invention relate to systems and processes for recovering methanesulfonic acid, in a purified form, from a composition additionally including sulfur trioxide. In accordance with one aspect, the invention provides a process that includes separating a feed stream comprised of hydrocarbons, methanesulfonic acid, sulfur trioxide, and optionally sulfuric acid to produce a light stream comprised of hydrocarbons and a heavy stream comprised of methanesulfonic acid and sulfur trioxide; contacting (e.g., by mixing) the heavy stream with a reactive additive capable of reacting with sulfur trioxide, under conditions effective to cause reaction of the reactive additive with the sulfur trioxide to produce a heavy reaction product having a boiling point higher than the boiling point of methanesulfonic acid; and separating the heavy stream using a distillation column to produce a distillate stream consisting essentially of methanesulfonic acid and a bottoms stream comprising the heavy reaction product.

公开(公告)号：US20210387947A1

公开(公告)日：2021-12-16

申请号：US17342737

申请日：2021-06-09

Applicant: Arkema Inc.

Inventor： Jean-Philippe R. CHAUVIN ,  Brian E. LORDAN ,  Patricia Wing-Kee CHEUNG ,  Vijay R. SRINIVAS ,  Andrew D. POLLI

IPC: C07C319/04 ,  B01J19/12 ,  C07C319/28 ,  B01D3/06

Abstract: Continuous photochemical production of high purity linear mercaptan and sulfide-containing compositions.