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:
Sep. 01, 1981
Filed:
Jun. 16, 1980
Gerald E Engdahl, Wheaton, IL (US);
James A Nail, Carol Stream, IL (US);
Vincent F Allo, Warrenville, IL (US);
Chicago Bridge & Iron Company, Oak Brook, IL (US);
Abstract
A falling film freeze exchanger having a plurality of spaced apart vertical freeze tubes secured in, and penetrating, an upper and a lower tube sheet; a cover above the upper tube sheet; a shell around the tube sheets and connected thereto, with said cover supported by the shell; the upper ends of the freeze tubes desirably extending above the upper tube sheet and, optionally, the lower ends of the freeze tubes not being enclosed by the shell; a conduit to deliver a liquid feed stream into a feed box between the upper tube sheet and the cover; a conduit to deliver a cooling fluid around the tubes inside of the shell between the upper and lower tube sheets; and, a conduit to remove cooling fluid therefrom. A falling film freeze exchanger comprising a vessel having a top, bottom and side wall enclosing a liquid feed box in the bottom portion, and a cooling fluid space in the top portion separated by a tube sheet; a plurality of freeze tubes, supported by the tube sheet, extending downwardly in the feed box and out through holes larger than the freeze tubes in the vessel bottom; a conduit to deliver a liquid feed stream into the feed box; a conduit to deliver a cooling fluid into the cooling fluid space; and, a conduit to remove cooling fluid therefrom.