Paper making and fiber liberation – Apparatus – Digester
Patent
1993-01-25
1996-05-28
Alvo, Steven
Paper making and fiber liberation
Apparatus
Digester
162 65, 162246, 422225, 422229, D21C 700, D21C 9153
Patent
active
055207839
ABSTRACT:
An apparatus and method for bleaching high consistency lignocellulosic pulp using ozone supplied in an ozone containing gas. The bleaching reactor apparatus according to the invention is a generally cylindrical vessel itself being rotatable or with a rotatable shaft having radially extending paddles arranged in a configuration to minimize axial dispersion of the pulp and maximize radial dispersion of the pulp to provide a radially dispersed plug flow of pulp through the reactor in the presence of the ozone to provide substantially uniformly bleached pulp.
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Friend William H.
Gandek Thomas P.
Jones Stuart T.
Pikulin Michael A.
White David E.
Alvo Steven
Union Camp Patent Holding, Inc.
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