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:
Feb. 28, 1984
Filed:
Sep. 27, 1982
Thomas H Larkins, Jr, Kingsport, TN (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
The present invention provides a process for the recovery of rhodium, lithium, and iodine values from tar which is generated during carbonylation reactions. The process comprises sequentially extracting the tar with water and then leaching the remaining tar with acetic acid, burning the resulting residue, and recycling the resulting rhodium-enriched residue to the reaction process. Preferably, the process further comprises the recovery of iodine values by the incineration of the acetic acid leachate and treatment of the off-gas with aqueous alkali hydroxide. Lithium values are recovered by evaporating water from the aqueous phase of the water extraction step and recycling the resulting residue to the reaction process.