Patent ID: 8603295
Filing Date: 2013-12-10
Classification: C08H,C12P,D21B,D21C,Y02E

Abstract:
1. A process for producing reactive cellulose from lignocellulosic biomass having a hemicellulose content and a lignin content, comprising the steps of: (a) pretreating the lignocellulosic biomass under pressure with steam and solvent to obtain pressurized solvent washed biomass by (b) generating a purified cellulose stream and a vapour stream by flashing the pressurized solvent washed biomass into a separator to subject the pressurized solvent washed biomass to explosive decompression and subsequent separation into the purified cellulose stream and the vapour stream; and (c) collecting the purified cellulose stream and recovering the solvent in the vapor stream.