Process for stabilizing the PH of a pulp suspension and for producing paper from the stabilized pulp
US6991705B2 · kind B2 · utility
7Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for stabilizing the pH of a pulp suspension with buffering agents and to a process for producing paper from a stabilized pulp suspension. The alkalinity of the pulp suspension is increased by a combination of an alkali metal hydroxide feed and a carbon dioxide feed. Said feeds provide a significant buffering effect which stablilizes the pH of said pulp suspension for the paper making process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.