Process for continuous acid hydrolysis and saccharification
US4199371A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1978 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | Mar 31, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC13K1/02
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.