Procedure and apparatus for cellulose washing
US4292123A · kind A · utility
21Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | May 31, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/282
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Procedure and apparatus for the washing of cellulose in the form of a continuous web. The continuous web produced in a concentrating zone is washed in a washing zone comprising between 2 and 6 washing steps, so that into the web pressurized washing liquid is introduced according to the counter-current principle to the purpose of displacing the suspension liquid contained in the web, using one pumping operation for transporting the washing liquid through a plurality of washing steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.