A METHOD AND AN APPARATUS FOR WASHING A CRUDE LIGNIN, A SOLUBLE CARBOHYDRATE CONTAINING FRACTION, A SOLID FRACTION AND THEIR USE

USPTO Patent Application US 2018/0148467 A1
Application Date: May 31st, 2018

ABSTRACT

The invention relates to a method and an apparatus for washing a crude lignin slurry (5) formed from plant based raw material, wherein the method comprises separating a soluble carbohydrate...
Application Number:
15/577,481
International Classification:
C07G 1/00 (20060101); C07H 1/08 (20060101); B01D 33/04 (20060101); B01D 33/64 (20060101); B01D 12/00 (20060101)
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CLAIMS

What is claimed is:

1. A method for washing a crude lignin slurry formed from plant based raw material, wherein the method comprises: separating a soluble carbohydrate containing fraction from the crude lignin slurry by using displacement washing in at least one solid-liquid separation stage so that the crude lignin slurry is prepressed, washed and...

DESCRIPTION

FIELD OF THE INVENTION

The invention relates to a method and an apparatus for washing crude lignin slurry. Further, the invention relates to a soluble carbohydrate containing fraction and its use. Further, the invention relates to a solid fraction and its use.
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