Method and arrangement for improving a washing step after completed cooking in a continuous digester
US8366876B2 · kind B2 · utility
0Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2010 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Dec 20, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The method and an arrangement are for the improvement of a wash after completed digestion in a continuous digester for the production of cellulose pulp. The softened chips are exposed to a radially directed displacement wash after they have passed the rotating bottom scraper. The displacement wash has been established in the flow of digested softened chips through the outlet tap before the softened chips are defibrated by the fall in pressure across the blow-valve that is arranged after the digester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.