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:
Sep. 20, 2005
Filed:
Oct. 23, 2001
Rolf Ekholm, Karlstad, SE;
Peter Wigarthsson, Kil, SE;
Rolf Ekholm, Karlstad, SE;
Peter Wigarthsson, Kil, SE;
Kvaerner Pulping AB, Karlstad, SE;
Abstract
A method for washing a fibre suspension with washing liquid, in which, in accordance with the invention, the fibre suspension is introduced into an annular treatment channel () that has an inlet end () and an outlet end () and is concentric with an axis of rotation () to form an inner annular layer (), washing liquid simultaneously being introduced into the treatment channel form an outer layer (), which surrounds the inner annular layer. The fibre suspension and washing liquid are caused to rotate in the treatment channel whilst moving from said inlet end to said outlet end, fibres in the fibre suspension being caused to move into the outer layer of washing liquid, under the influence of the centripetal force, so that an accept (), the liquid phase of which completely or mostly consists of washing liquid, is discharged at the outlet end of the treatment channel.