Method for converting a digester for use as a gas phase and hydraulic phase continuous digester
US7658818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2007 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Dec 12, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C7/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for converting a vapor phase continuous digester to a hydraulic digester including the steps of: operating the vapor phase digester in a vapor phase mode wherein a chip slurry enters the vessel of the digester through a lower chip inlet port, moves up through a top separator, discharges from an upper chip discharge chute of the separator to an upper vapor region of the vessel and falls to a liquor filled region of the vessel; ceasing the flow of the chip slurry to the separator; establishing a chip slurry flow path to an upper portion of top separator, and filling the vessel with liquor and chips such that the chip discharge chute is immersed in liquor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.