The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2020
Filed:
Oct. 24, 2017
Applicant:
Suncoal Industries Gmbh, Ludwigsfelde, DE;
Inventors:
Tobias Wittmann, Berlin, DE;
Isabella Richter, Teupitz, DE;
Assignee:
SUNCOAL INDUSTRIES GMBH, Ludwigsfelde, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08H 7/00 (2011.01); D21C 11/00 (2006.01); C08H 8/00 (2010.01);
U.S. Cl.
CPC ...
C08H 6/00 (2013.01); C08H 8/00 (2013.01); D21C 11/0007 (2013.01);
Abstract
Products extracted from black liquor include undissolved carbonized lignin and carbonized black liquor. The products further include solid carbon separated from the black liquor. Black liquor from an alkaline fractionation process is subjected to a hydrothermal carbonization process. Undissolved carbonized lignin is separated from the carbonized black liquor. The remaining carbonized black liquor is fed back into the alkaline fractionation process. The undissolved carbonized lignin is separated from the carbonized black liquor and purified.