Method of pretreating lignocellulose fiber-containing material in a pulp refining process
US6899791B2 · kind B2 · utility
16Cited by
22References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1997 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Aug 8, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21B1/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for pretreating or conditioning lignocellulose fiber containing feed material in preparation for conversion to pulp. Wood chips are pretreated under conditions of elevated temperature, pressure and humidity and subsequently compressed to cause destructuring of the fibers of the feed material. The pretreated wood chips are then converted to pulp using such methods as the ground wood pulping process or chemical digestion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.