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:
May. 14, 2013
Filed:
Nov. 26, 2008
Applicants:
Jorg Brucher, Domsjo, SE;
Anders Johan Norberg, Ornskoldsvik, SE;
Inventors:
Jorg Brucher, Domsjo, SE;
Anders Johan Norberg, Ornskoldsvik, SE;
Assignee:
Metso Power AB, Gothenburg, SE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 21/20 (2006.01); C01C 1/18 (2006.01); D21C 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
Desirable chemicals are recovered from a raw material that is formed in substantial amounts during the production of cellulose pulp from renewable lingo-cellulose material. An ammonia/ammonium-containing methanol/water mixture is acidified with an acid that has the ability of forming ammonium salt with the ammonium. The mixture is circulated and passed through an apparatus that has an indirect heat exchanger combined with an storage volume fitted with a gas collection device.