公开(公告)号：US20170166499A1

公开(公告)日：2017-06-15

申请号：US15118357

申请日：2015-02-11

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Michael L. MILLER ,  Timothy A. BROWN ,  Clay SHAFER

IPC: C07C5/333 ,  B01J19/24

CPC classification number: C07C5/3332 ,  B01J19/24 ,  B01J2208/00637 ,  B01J2208/00646 ,  B01J2208/00716 ,  B01J2219/00027 ,  B01J2219/24 ,  C07C5/42 ,  C07C2523/04 ,  C07C2523/745 ,  C07C2523/78 ,  C07C15/46

Abstract: The invention relates to a method for operating a dehydrogenation reactor for the dehydrogenation of hydrocarbons is provided wherein the dehydrogenation reactor comprises a potassium promoted iron oxide catalyst, the hydrocarbons being dehydrogenated in contact with the catalyst and carbon dioxide is introduced during a) start-up of the reactor, b) shut-down of the reactor, and c) steaming procedures, wherein the carbon dioxide is introduced in conjunction with steam in at least one method step.

公开(公告)号：US20220081372A1

公开(公告)日：2022-03-17

申请号：US17419063

申请日：2020-01-07

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Norbert NIESSNER ,  Bianca WILHELMUS ,  Hannes KERSCHBAUMER ,  Michiel VERSWYVEL ,  Petra INGHELBRECHT ,  Thomas W. COCHRAN ,  KyungHo SHON ,  Mohammed ABBOUD ,  Ricardo CUETOS ,  Hans-Dieter SCHWABEN ,  Jens KATHMANN ,  Thad URQUHART ,  Timothy A. BROWN ,  Tim WONG ,  Walter DE VET ,  Hans-Werner SCHMIDT ,  Andreas SCHEDL ,  Tristan KOLB

IPC: C07C4/22 ,  C08J11/12 ,  C07C7/04 ,  C10B53/07 ,  B01D3/14 ,  B01D3/42

Abstract: The invention relates to an improved process for providing purified styrenic monomers, such as styrene, from styrene-containing polymer waste. Styrene-containing waste is depolymerized in a suitable reactor, and the depolymerization products are condensed and separated in a three-step distillation process.