Electrolysis process for removal of caustic in hemicellulose caustic
US5589053A · kind A · utility
4Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Nov 3, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/0042
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Pulping chemicals and hemicellulose are recovered from a starting solution essentially free of lignin but containing a mixture of hemicellulose and caustic by electrolyzing this solution in the anolyte compartment of an electrolytic cell. By electrolysis, the concentration of caustic in the anolyte is decreased and the concentration of caustic in a catholyte of said cell is increased so as to allow recovery, of about 60 to about 80 percent of the caustic contained in the hemicellulose caustic starting solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.