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:
Jul. 18, 2023
Filed:
Sep. 11, 2017
Valmet Ab, Sundsvall, SE;
Jonas Orgård, Stöde, SE;
Hans Lövgren, Sundsvall, SE;
Stefan Norberg, Söråker, SE;
Hans-Olof Eriksson, Gävle, SE;
Peter Öhrström, Njurunda, SE;
VALMET AB, Sundsvall, SE;
Abstract
A method for processing pulp in an apparatus for washing and dewatering pulp, and a system for controlling this apparatus, the apparatus comprising two rotatable press rolls () having a permeable outer surface (), and a vat (), the press rolls () defining a press nip () between them. The processing is determined by a set of variable operating parameters, which are adjusted and/or maintained during operation in response to deviations of measured values of control parameters in relation to their respective predetermined threshold values. The variable operating parameters include rotation speed of the press rolls. The control parameters include vat pressure and/or linear load.