Apparatus and method for washing cellulosic pulp

Textiles: fluid treating apparatus – Machines – Combined

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162 60, 162 61, 68158, D21C 902

Patent

active

053678940

ABSTRACT:
A flat bed, Fourdrinier-type, countercurrent washer for cellulosic pulp incorporates a pressing section at the downstream end thereof which includes the couch roll and additional rolls that carry out multiple mechanical pressing operations on the pulp after it has been subjected to multiple stages of displacement washing without mechanical treatment. As a result, where such washers without mechanical pressing deliver pulp of a consistency of the order of 15% solids, this washer increases the pulp consistency to as high as 40% while correspondingly increasing the effectiveness of the washing operation as a whole.

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Chemi-Washer Bulletin No. 66-SBB, May, 1988.

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