Method of producing pulp with high alkali cooking in the last cooking stage
US5885414A · kind A · utility
10Cited by
7References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Aug 18, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C3/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and device for cooking pulp by increasing the effective alkali concentration in the residual phase of the cooking process to substantially improve the residual delignification rate and thus improving the pulp properties such as the pulp strength and pulp yield at a given lignin content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.