Feeding arrangement for feeding of chips to chip bins

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Continuous chemical treatment or continuous charging or...

Reexamination Certificate

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Details

C162S052000, C162S068000, C162S242000, C162S246000, C162S018000, C162S236000, C162S237000

Reexamination Certificate

active

10979004

ABSTRACT:
The invention relates to a feed arrangement for feeding chips to chip bins (1) in the production of cellulose pulp in continuous digesters (16), in which the chip bin is constituted by a treatment vessel having a top and a bottom, in which the chips are fed into the top (13) of the treatment vessel and fed out via the bottom of the treatment vessel using suitable lock members (10, 11). Distribution devices (4a,4b) for the addition of steam are disposed in the treatment vessel so as to heat the chips to a level above 80° C., preferably around 100° C., when the chips are fed out via the bottom of the treatment vessel. By virtue of the fact that the chips are fed into the treatment vessel via at least one liquid lock (30) and the treatment vessel is otherwise sealed off, the quantity of driven-off gases from the chip bin is reduced to a minimum, at the same time as an effective utilization of available energy is obtained.

REFERENCES:
patent: 2905240 (1959-09-01), Sandberg
patent: 3157565 (1964-11-01), Gremler
patent: 3578554 (1971-05-01), Richter
patent: 3729105 (1973-04-01), Huebler et al.
patent: 4096027 (1978-06-01), Sherman
patent: 5266159 (1993-11-01), Greenwood et al.
patent: 5714043 (1998-02-01), Finley
patent: 5720232 (1998-02-01), Meador
patent: 6706199 (2004-03-01), Winter et al.
patent: 354086 (1973-01-01), None

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