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. 01, 1998
Filed:
Nov. 01, 1996
Applicant:
Inventors:
Mauno Iivonen, Joutseno, FI;
Arto Koso, Karhula, FI;
Olavi Pikka, Karhula, FI;
Seppo Pursiainen, Joutseno, FI;
Esko Turunen, Joutseno, FI;
Assignees:
Ahlstrom Machinery Oy, Helsinki, FI;
Metsa-Botnia Ab Joutseno Pulp, Pulp, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162 52 ; 162 60 ; 162233 ; 162241 ; 162242 ; 162246 ;
Abstract
A method and apparatus for improving a batch cooking process, e.g. providing about 7% increase in discharge time, are provided. The invention is especially suitable for improving modern displacement batch cooking processes. A dedicated pump is mounted directly to each digester and discharges to a common superatmospheric pressure discharge tank.