Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Continuous chemical treatment or continuous charging or...
Patent
1993-07-20
1995-12-26
Lacey, David L.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Continuous chemical treatment or continuous charging or...
162 17, 162 52, 162246, D21C 706
Patent
active
054784395
ABSTRACT:
A system is provided for feeding wood or annual plant chips to continuous digesters for producing paper pulp. The system comprises two stages: in a first, impregnation stage, the chips are impregnated with a sufficient amount of chemical reagents to allow them to be hot-digested by impregnation in alkaline or alkaline-earth solutions, then drained. In the case of annual plants, the plants are mechanically mixed with alkaline and/or alkaline-earth reagents and a minimal quantity of hot water to obtain a wet fiber-like mixture. In the second stage, the material impregnated above is pumped directly into a pressurized digester (1) by a hydraulic piston pump (2). A plug (4) formed in the pipe (3) between the pump and the digester provides the required seal and pressure resistance.
REFERENCES:
patent: 2975096 (1961-03-01), Ginaven et al.
patent: 3041233 (1962-06-01), Richter
patent: 4790905 (1988-12-01), La Bruniere et al.
patent: 4968385 (1990-11-01), Amador et al.
De La Bruniere Patrick
Galichon Jean
Lacey David L.
Nguyen Dean T.
Tag Pulp Industries S.A.
LandOfFree
Method for feeding cellulose pulp mixture to a pressurized conti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for feeding cellulose pulp mixture to a pressurized conti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for feeding cellulose pulp mixture to a pressurized conti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1366330