Reliance Industries Limited

Suresh Iyengar

Pavankumar Aduri

Uday Meghashyam Ratnaparkhi

Mangesh Raghunath Sakhalkar

Viswanath Kotra

Parasuveera Uppara

Romal Ramkrushna Chafle

Gordhan Das Goyal

Vibhuti Dhukande

Rahul Kumbhar

Rahul Mahadeo Dhawade

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.

Process for preparing linear alkyl benzene

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Navi Mumbai, India

Suresh Iyengar