Method for bleaching pulp with hydrogen peroxide recovered from cellulosic spent liquor
US5628872A · kind A · utility
0Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The process for producing hydrogen peroxide, used in the bleaching of pulp, uses the hydrogen generated wholly or partly by the gasification or partial combustion of cellulose spent liquors used in digesting cellulose material to produce the hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.