"PROCESS FOR TREATING SPENT WASTE ALKALINE DIGESTION LIQUOR FROM PAPER PULPING OPERATIONS AND PRODUCT"
Application 1466/DEL/1997 published 2006-12-08, filed 1997-06-02
A water soluble, surface active, polymeric agent is mixed with digestion liquor, preferably with an additional surface active defoaraer coagulant agent prior to or during acidification of the alkaline digestive liquor. This results in an easily separable, non-gelatinous, non-gummy, coagulated lignin as a solids, participate fraction that tends to float on a clarified liquid i fraction containing recoverable salts. The solids fraction and the liquid frictions are easily separated, one from the other, by a gravity separation step.
Applicant
1)BOUNTIFUL APPLIED RESEARCH CORPORATION
:106 WEST 2ND NORTH BOUNTIFUL UTAH 84010 U.S.A
Inventor
1)HASSAN EI SHALL
International Info
Classification: B03D 3/00