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:
Jul. 23, 1991
Filed:
Sep. 22, 1989
Ulrich Rudel, Oberhausen, DE;
Krupp Koppers GmbH, Essen, DE;
Abstract
The column for distillation of charge products which form a heavier liquid phase and a lighter liquid phase and connected sump circulating boiler are provided with a liquid impermeable collecting bottom plate located in a lower part of the column. The bottom plate has a discharge passage and the column is provided with a liquid withdrawal outlet arranged closely underneath the collecting bottom plate but above the lower end of the discharge passage so that the heavier phase can be prevented from reaching the liquid withdrawal outlet by gravity. One pipe connects the sump circulating boiler with the liquid withdrawal outlet to provide a free flow of liquid from the column to the sump circulating boiler for heating and another pipe connects the column with the sump circulating boiler above the collecting bottom plate so that the reheated liquid can flow from the sump circulating boiler to the column without a circulating pump. The column also has a column sump arranged so that the lower part of the column opens into the column sump, which has a cross-section which is smaller than the cross-section of the remaining portion of the column; and a separating layer regulator for regulating a separating layer between the lighter and the heavier phase of the charge product and connected with the column sump having the smaller cross-section for greater sensitivity and reliability.