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. 25, 1986
Filed:
Oct. 15, 1984
Theodore A Rado, Oklahoma City, OK (US);
Kerr-McGee Chemical Corporation, Oklahoma City, OK (US);
Abstract
In the manufacture of particulated metal oxides by the vapor phase oxidation of volatile metal halides, hot gaseous effluent streams are produced which, after separation of the desired particulated metal oxide therefrom, contain residual amounts of the particulated metal oxide as well as unreacted, volatile metal halide and halogen gas. The method of this invention provides for the recovery of these materials, individually, through a succession of contacting and separating steps utilizing a recycle stream of previously recovered, unreacted, liquid metal halide. Utilization of the recycle stream of metal halide provides for both evaporative cooling of the hot gaseous effluent stream to permit recovery of the residual particulated metal oxide therein and scrubbing of the resulting off-gas to recover the unreacted volatile metal halide therein as a liquid and provide a gas phase containing the by-product halogen gas. The recovered unreacted volatile metal halide liquid constitutes the recycle stream of liquid metal halide used in the process. The gas phase is subjected to a further scrubbing to separate and recover therefrom any remaining unreacted, volatile metal halide.