Reactor for bleaching high consistency pulp with ozone

Details Reactor for bleaching high consistency pulp with ozone Reactor for bleaching high consistency pulp with ozone

1992-01-15

1995-12-05

Alvo, Steve

Paper making and fiber liberation

Apparatus

Digester

162243, 162246, 162 65, 422229, D21C 700, D21C 9153

Patent

active

054725720

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 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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