Patents

IN342055:Solvent extractive process for simultaneous production of polymer/food grade hexane and pure benzene form narrow boiling fraction naphtha

The invention discloses a solvent extractive process for simultaneous production of polymer/food-grade hexane and pure benzene from a narrow fraction of naphtha. Process comprises of processing of naphtha fraction in packed bed/tray type extractor with a mixture of polar solvent and water to remove the benzene from naphtha fraction for generating the raffinate containing benzene less than the specified value required in Polymer/Food Grade Hexane (PGH/FGH) and solvent rich extract phase which is processed in an extractive distillation column to get pure benzene and food grade hexane. The bottom stream of extractive distillation is fed to the solvent recovery column for recovery of benzene and solvent. The Raffinate phase from the extractor is fed to the raffinate wash column for removal of solvent using water washing to produce PGH/FGH.

Filing Date: 09-04-2015

Issue Date: 21-07-2020

Applicant: CSIR-Indian Institute of Petroleum (CSIR-IIP), Dehradun

Patent No: IN342055

Application No: 0991DEL2015

Inventor(s): Sunil Kumar; Prasenjit Ghosh; Shrikant Madhusudan Nanoti; Madhukar Onkarnath Garg; Bhagat Ram Nautiyal

IPC Classification: C10G21/00

Country: India

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