초록 ▼

Continuous hydrolysis to produce sugars is effected by cyclically immersing a solid, divided lignocellulosic material in a bath of concentrated hydrochloric acid and draining the material between successive immersions so as to dissolve the produced sugars, until the sugar concentration of the acid i

Continuous hydrolysis to produce sugars is effected by cyclically immersing a solid, divided lignocellulosic material in a bath of concentrated hydrochloric acid and draining the material between successive immersions so as to dissolve the produced sugars, until the sugar concentration of the acid in the bath has attained a desired value. The solid material and the liquid acid are delivered to a tubular horizontal rotary reactor arranged to provide a bath of the acid, to produce a rotating movement for cyclical immersion of the solid material in the bath of acid and longitudinally displace the solid material undergoing hydrolysis together with the acid of the bath and to continuously discharge solid residue and acid containing dissolved sugars due to overflow by gravity at an outlet end of the reactor.

대표청구항 ▼

A process for continuously producing sugars by hydrolyzing lignocellulosic material with concentrated aqueous hydrochloric acid in a horizontal rotating tubular reactor which comprises the steps of: (a) feeding concentrated aqueous hydrochloric acid to the reactor and forming a liquid bath in the bo

A process for continuously producing sugars by hydrolyzing lignocellulosic material with concentrated aqueous hydrochloric acid in a horizontal rotating tubular reactor which comprises the steps of: (a) feeding concentrated aqueous hydrochloric acid to the reactor and forming a liquid bath in the bottom thereof, (b) feeding lignocellulosic material to one end of the reactor, (c) cyclically immersing said material in said acid bath while removing and draining a part of said material between consecutive immersions thereof by rotating the reactor, (d) continuously and simultaneously with said immersing step conveying said material along the length of the reactor; and (e) continuously discharging solid residue and liquid acid containing sugars by gravity from the opposite end of the reactor.