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:
Apr. 05, 2011
Filed:
Jun. 01, 2007
Jianer Jiang, Mason, OH (US);
Gerald Wayne Hill, Springboro, OH (US);
Jianer Jiang, Mason, OH (US);
Gerald Wayne Hill, Springboro, OH (US);
International Paper Company, Memphis, TN (US);
Abstract
The invention relates to an apparatus for continuous digestion of wood chip comprising an upright generally cylindrical vessel having a top end and a bottom end. The top end of the cylindrical vessel is adapted to receive wood chips mixed with a cooking liquor to be treated therein. A first conduit is integrally attached at a first location positioned between the top and bottom ends of the vessel for selectively extracting a first quantity of cooking liquor from the vessel. The first location is positioned upstream of a second location within the vessel where the cooking liquor being at substantially full cooking temperature. A second conduit is integrally attached at a third location positioned downstream from the first and second locations of the vessel. The second conduit is in fluid communication with a fourth location positioned at, about below or upstream from the first location for selectively extracting a second quantity of cooking liquor from the vessel at the third location and transporting at least a portion of the extracted second quantity of cooking liquor to the fourth location.