Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Charging and/or discharging fibrous material
Reexamination Certificate
2003-03-12
2008-09-09
Fortuna, José A (Department: 1791)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Charging and/or discharging fibrous material
C162S017000
Reexamination Certificate
active
07422657
ABSTRACT:
The method is for feeding a chips-slurry from a low-pressure to a high-pressure system during the continuous cooking of chemical cellulose pulp. The feed takes place through a sluice feeder53′ between these systems. The sluice feeder is provided with a rotor with through-pockets 1, 2that are alternately connected with the low-or the high-pressure system. A recirculation line54′, that has a high-pressure pump57′, extends from the first outlet53b′ of the sluice feeder to the second inlet53c′ of the sluice feeder for transporting the fluid that has been expelled from the pockets of the sluice feeder when these are located in their first position. The fluid expels the chips mixture from the pockets of the sluice feeder in their second position and is essentially exclusively constituted by the fluid that has been expelled from the pockets in their first position.
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Gustavsson Lennart
Snekkenes Vidar
Fasth Rolf
Fasth Law Offices
Fortuna José A
Metso Fiber Karlstad AB
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