公开(公告)号：US20220315509A1

公开(公告)日：2022-10-06

申请号：US17640582

申请日：2020-09-16

申请人： NOVA CHEMICALS (INTERNATIONAL) S.A.

发明人： Vasily SIMANZHENKOV ,  Robert LADD ,  Michael KOSELEK ,  Kamal SERHAL ,  Shahin GOODARZNIA ,  Bolaji OLAYIWOLA

IPC分类号： C07C5/48 ,  B01J8/06

摘要： A system and method for oxidative dehydrogenation including a first reactor having a first ODH catalyst to dehydrogenate an alkane to a corresponding alkene at a first temperature and facilitate generation of steam, a second reactor having a second ODH catalyst to dehydrogenate alkane in a first-reactor effluent to the corresponding alkene at a second temperature that may be greater than the first temperature and facilitate generation of steam, and a third reactor having a third ODH catalyst to dehydrogenate alkane in a second-reactor effluent to the corresponding alkene at a third temperature that may be greater than the first temperature or the second temperature and facilitate generation of steam.

公开(公告)号：US20230202958A1

公开(公告)日：2023-06-29

申请号：US18008312

申请日：2021-05-25

申请人： NOVA CHEMICALS (INTERNATIONAL) S.A.

发明人： Bolaji OLAYIWOLA ,  Shahin GOODARZNIA ,  Vasily SIMANZHENKOV ,  Mohamed AIFFA ,  Kamal SERHAL ,  Robert LADD ,  David GENT

IPC分类号： C07C51/16 ,  C07C51/15 ,  C07C53/08

CPC分类号： C07C51/16 ,  C07C51/15 ,  C07C53/08

摘要： The present disclosure relates to limiting the production of acetic acid in an oxidative dehydrogenation process to convert ethane to ethylene. The process of oxidative dehydrogenation includes feeding acetic acid, along with ethane and oxygen into an oxidative dehydrogenation reactor where contact with a catalyst leads to conversion of the ethane into ethylene and acetic acid. By including acetic acid in the feed, the amount of acetic acid produced may be limited and the ratio of ethylene produced to ethane consumed may increase.

公开(公告)号：US20220241744A1

公开(公告)日：2022-08-04

申请号：US17611770

申请日：2020-07-15

申请人： NOVA CHEMICALS (INTERNATIONAL) S.A.

发明人： Vasily SIMANZHENKOV ,  Shahin GOODARZNIA ,  Bolaji OLAYIWOLA ,  Kamal SERHAL ,  Michael KOSELEK

IPC分类号： B01J7/02 ,  B01J4/00

摘要： A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.