Paper making and fiber liberation – Apparatus – Digester
Patent
1976-11-09
1978-10-17
Bashore, S. Leon
Paper making and fiber liberation
Apparatus
Digester
162246, 162248, 162249, 214 17C, D21C 706, D21C 714
Patent
active
041207483
ABSTRACT:
A batch type digester for wood chips in which a stream of wood chips is delivered into the center of the top of the digester tank, while liquor is being delivered through a pair of pipes at the top of the tank. Simultaneous with the delivery of the wood chips and liquor, a steam vortex is formed in the upper part of the tank by a plurality of steam jets which are directed downwardly and tangentially and form spiral flow paths below the streams of chips and liquor. The wood chips and liquor are dispersed together and the liquor thoroughly wets the chips. The chips produce a substantially even layer as they fall to the bottom of the tank. The steam vortex maintains a negative relative pressure zone which promotes the dispersion of the stream of chips and the liquor.
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Alvo Steve
Bashore S. Leon
Hudson Pulp & Paper Corp.
Razzano Pasquale A.
Stults Harold L.
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