METHOD FOR PRECIPITATING LIGNIN FROM ORGANOSOLV PULPING LIQUORS

USPTO Patent Application US 2017/0247835 A1
Application Date: Aug. 31st, 2017

ABSTRACT

The present invention relates to a method for precipitating lignin from organosolv pulping liquors. For this purpose, the organosolv pulping liquor is introduced as a precipitation medium in an already...
Assignee(s):
Application Number:
15/519,785
International Classification:
D21C 11/00 (20060101); D21C 3/20 (20060101); C07G 1/00 (20060101)
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CLAIMS

What is claimed is:

1-18. (canceled)

DESCRIPTION

The present invention relates to a method for precipitation of lignin from organosolv pulping liquors. The organosolv pulping liquor is hereby introduced into an already existent aqueous dispersion of lignin particles or into a filtrate of an aqueous dispersion of lignin particles as precipitant, whereby a separate, lignin-comprising phase in...
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