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:
Mar. 29, 1988
Filed:
Apr. 15, 1987
Applicant:
Inventor:
Christian Ehrsam, Winterthur, CH;
Assignee:
Sulzer Brothers Limited, Winterthur, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
62532 ; 34-5 ; 34 15 ; 34 92 ; 62123 ; 137 13 ;
Abstract
The apparatus employs a compressor for compressing a flow of water vapor with an ethanol additive and a condensation chamber in which the compressed water vapor may be condensed to form ice crystals. A coolant circuit in provided in the condensation chamber to melt the ice crystals from the heat exchange surfaces for subsequent formation of primary ice in a bottom chamber. A recirculation circuit is provided to convey the primary ice into a freeze drying chamber for freeze-drying of the vapor at the triple point. The resulting product is passed to a water separator prior to ultimate use.