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. 22, 1987
Filed:
Apr. 17, 1986
Leslie F Whittle, Windham, NH (US);
The Badger Company, Inc., Cambridge, MA (US);
Abstract
The invention is an improved method and apparatus for recovering waste heat from a low temperature process stream by means of a vaporizable heat sink liquid, characterized by an effective lowering of the boiling temperature of the heat sink liquid without need to reduce its boiling pressure. The heat sink liquid essentially comprises a mixture of two immiscible liquids that form a low boiling azeotrope. The heat sink liquid is brought into indirect heat exchange with the low temperature process stream for heat extraction. The invention involves simultaneous boiling of the two immiscible liquids to suppress the temperature of the heat sink liquid to below the low temperature of the process stream, whereby the heat sink liquid is able to recover heat from the process stream. In a preferred embodiment of the invention, the heat sink liquid comprises the reactants that are fed to a reactor, and the low temperature process stream is the reaction effluent from the reactor.