Patent · US Active

Separating lignin from black liquor by precipitation, suspension and separation

US8172981B2 · kind B2 · utility

6Cited by

25References

19Claims

0Family size

Assignee

LignoBoost AB · SE

Inventors

Per Tomani · Huddinge, SE
Fredrik Ohman · Gävle, SE
Hans Theliander · Handen, SE
Peter Axegard · Solna, SE

Key dates

Filing date	Feb 21, 2008
Grant date	May 8, 2012
Priority date	—
Expiry date	Aug 24, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07G1/00
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A method for controlling the sodium and sulphur balance of a pulp mill while separating lignin from black liquor, and also a lignin product or an intermediate lignin product obtainable by the method. The present invention also provides use of a lignin product or an intermediate lignin product for the production of fuel (solid, gaseous or liquid) or materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.