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:
Nov. 18, 2014
Filed:
Dec. 03, 2013
Applicant:
Valmet Ab, Sundsvall, SE;
Inventors:
Assignee:
Valmet AB, Sundsvall, SE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21C 7/06 (2006.01); D21C 3/24 (2006.01); D21C 1/06 (2006.01);
U.S. Cl.
CPC ...
D21C 3/24 (2013.01); D21C 7/06 (2013.01); D21C 1/06 (2013.01);
Abstract
The feed system is for a continuous digester where at least two pumps are arranged in parallel in the bottom of a pre-treatment vessel and a liquid level of at least 20 meters is established. The system makes it possible to provide a feed system with an improved accessibility and more reliable operation, and to operate the main part of the pumps at optimal efficiency even if the production capacity is reduced.