Progressing batch hydrolysis process
US4615742A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Jan 10, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC13K1/02
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A progressive batch hydrolysis process for producing sugar from a lignocellulosic feedstock, comprising passing a stream of dilute acid serially through a plurality of percolation hydrolysis reactors charged with said feedstock, at a flow rate, temperature and pressure sufficient to substantially convert all the cellulose component of the feedstock to glucose; cooling said dilute acid stream containing glucose, after exiting the last percolation hydrolysis reactor, then feeding said dilute acid stream serially through a plurality of prehydrolysis percolation reactors, charged with said feedstock, at a flow rate, temperature and pressure sufficient to substantially convert all the hemicellulose component of said feedstock to glucose; and cooling the dilute acid stream containing glucose after it exits the last prehydrolysis reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.