Clarifying and/or filtering of green liquor and an apparatus therefore
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Sep 11, 1996
filing date -
Mar 15, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for treating green liquor from a sulphate pulp mill enhances the clarification of the green liquor and may easily be integrated into existing pulp mills. A first portion of the green liquor from the sulphate pulp mill is clarified in a clarifier to produce a clarified green liquor and a dregs-containing green liquor. The dregs-containing green liquor is filtered in a green liquor filter to produce filtrate and dregs. The filtrate is combined) with the clarified green liquor to produce a first combined stream; and the dregs are filtered in a dregs filter. A second portion of green liquor from the sulphate pulp mill is combined with the dregs-containing green liquor to produce a second combined stream, and the second combined stream is introduced into the green liquor filter. The dregs from step (b) are washed prior to filtering the dregs, the green liquor filter and washer comprising a single structure.
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