Washer press with multiple nips and multiple displacement wash zones

摘要

A washer press apparatus for washing and dewatering a wide range of solids concentrations of pulp in liquid suspensions includes multiple distinct displacement wash zones about a drum with multiple nips.

主权项

1. A pulp suspension washer press comprising:
a. at least one drum having an exterior drum surface disposed within a vat; b. a pulp distributor having a drum inlet adjacent to the drum; c. at least one pulp slide plate adjacent to the exterior drum surface; d. a trough having two sides and two ends, wherein said trough sides comprise the exterior drum surface on one side and the pulp slide plate or the vat as the other side, and said trough ends comprise the drum inlet on one end and a nip at the other end; e. a first displacement wash zone within the trough; wherein said first displacement wash zone has a first end and a second end, and wherein said first and said second end of said first displacement wash zone comprises a nip; and f. at least one second displacement wash zone within the trough downstream from said first displacement wash zone; wherein said at least one second displacement wash zone has a first end and a second end, and wherein said first and said second end of said at least one second displacement wash zone comprises a nip.