公开(公告)号：US20220033323A1

公开(公告)日：2022-02-03

申请号：US17312307

申请日：2019-12-09

Applicant: Reliance Industries Limited

Inventor： Viswanath Kotra ,  Pavankumar Aduri ,  Vibhuti Dhukande ,  Mangesh Raghunath Sakhalkar ,  Uday Meghashyam Ratnaparkhi ,  Rahul Kumbhar ,  Suresh Iyengar ,  Rahul Mahadeo Dhawade ,  Romal Chafle ,  Parasuveera Uppara ,  Gordhan Das Goyal

IPC: C07C2/66 ,  C07C6/12 ,  C07C7/04

Abstract: The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.

公开(公告)号：US11370723B2

公开(公告)日：2022-06-28

申请号：US17312307

申请日：2019-12-09

Applicant: Reliance Industries Limited

Inventor： Viswanath Kotra ,  Pavankumar Aduri ,  Vibhuti Dhukande ,  Mangesh Raghunath Sakhalkar ,  Uday Meghashyam Ratnaparkhi ,  Rahul Kumbhar ,  Suresh Iyengar ,  Rahul Mahadeo Dhawade ,  Romal Chafle ,  Parasuveera Uppara ,  Gordhan Das Goyal

IPC: C07C2/66 ,  C07C6/12 ,  C07C7/04

Abstract: The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.