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:
Dec. 29, 2009
Filed:
Apr. 10, 2006
Joerg Heilek, Bammental, DE;
Klaus Joachim Mueller-engel, Stutensee, DE;
Ulrich Hammon, Mannheim, DE;
Thomas Walter, Hassloch, DE;
Joerg Heilek, Bammental, DE;
Klaus Joachim Mueller-Engel, Stutensee, DE;
Ulrich Hammon, Mannheim, DE;
Thomas Walter, Hassloch, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for operating a hydraulic wash column, in which the position of the buildup front in the wash column is positioned by means of the flow rates of control liquor conducted into the wash column and/or by means of the flow rate of the suspension conducted into the wash column, and the flow rate determination is with the aid of the pressure difference which exists in the column between points in the suspension zone disposed upstream of the buildup front and points in the zone projecting from the buildup front up to the end of the crystal bed.