Apparatus for bleaching high consistency pulp with ozone
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United States of America Patent
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May 28, 1996
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N/A
app pub date -
Jan 25, 1993
filing date -
Oct 26, 1990
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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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