Process for improving the drainage of cellulosic pulps by adding carbon dioxide directly into the pulp
US6589387B1 · kind B1 · utility
1Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jun 8, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/65
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for improving the drainage or dewatering of cellulosic pulp suspensions in a paper making machine, a drying machine or the like assembly. The invention also relates to a process for producing a dried cellulosic product from said pulp suspension. The drainage of said pulp suspension is improved by treating it with carbon dioxide just prior to its entering a dewatering device such as the wire section of a paper machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.