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. 18, 1997
Filed:
Sep. 28, 1995
Oscar Luthi, Nashua, NH (US);
Beloit Technologies, Inc., Wilmington, DE (US);
Abstract
A method and apparatus for cooling wood pulp, coming from a high temperature bleaching stage at a consistency of approximately 10%, prior to introducing the wood pulp to a low temperature bleaching stage, including the steps of exposing the pulp to a thickening press in order to extract sufficient liquor from the pulp to increase the consistency to more than 25%; fluffing the pulp and depositing it on a moving bed cooler having a provision for blowing air through the pulp; and blowing cooling air through the pulp by using an air pump device with appropriate ducting. By first thickening the pulp, the mass of pulp to be cooled is significantly reduced and energy savings proportionate to the mass reduction are realized.