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:
Oct. 11, 1994
Filed:
Jun. 17, 1993
Applicant:
Inventor:
Hans-Jurgen Weiss, Oberursel, DE;
Assignee:
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F26B / ;
U.S. Cl.
CPC ...
34363 ; 34 74 ; 34469 ;
Abstract
Water-containing solids are dried in a fluidized bed, which is indirectly heated by at least one heat exchanger. Water vapors having a high water vapor content are withdrawn from the fluidized bed and a part of the vapors is passed as a fluidizing fluid through the fluidized bed. The remaining vapors are cooled to form an aqueous condensate. At least part of the aqueous condensate is contacted in a purification zone with a gaseous or vaporous stripping fluid. Purified condensate and contaminated stripping fluid are separately withdrawn from the purification zone. Water vapor is preferably used as a stripping fluid in the purification zone.