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. 22, 2005
Filed:
Apr. 29, 2002
Vidar Snekkenes, Karlstad, SE;
Lennart Gustavsson, Karlstad, SE;
Vidar Snekkenes, Karlstad, SE;
Lennart Gustavsson, Karlstad, SE;
Kvaerner Pulping AB, , SE;
Abstract
The invention relates to a method for supplying washing liquid to a digester () for cellulose pulp and a subsequent diffuser washing device (a,b). A high, disturbance-free production capacity can be obtained by using a common feed pump (P) which, via a main feed line (), supplies both the diffuser washing device and the digester with washing liquid in parallel. The first pump (P) establishes a pressure on the washing liquid which is in the interval 2–6 bar, and is preferably 4 bar, while the second pressure level, which is established by the diffuser pump device (P, P), is in the interval 6–12 bar, but is at least 2 bar higher than the first pressure level, and the third pressure level, which is established by the digester pump (P), is in the interval 12–25 bar The system becomes self-regulating in the event of any operational disturbances in the flow of washing liquid and, if the pumps are appropriate, a countercurrent flow of washing liquid through the system is essentially maintained.