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:
Apr. 21, 1987
Filed:
Aug. 22, 1984
Harlan J Byker, Columbus, OH (US);
PCB Sandpiper, Inc., Columbus, OH (US);
Abstract
Disclosed is a process for removing a halogenated aromatic compound (eg. a polychlorinated biphenyl or PCB) from a liquid carrier (eg. a transformer oil) contaminated therewith and for dehalogenating said removed halogenated aromatic compound. The process comprises mixing the contaminated carrier with a solvent for extracting halogenated aromatic compound from said carrier into said solvent and separating the contaminated solvent from the cleansed carrier. The contaminated solvent then is passed into an electrolytic cell for electrolytically dechlorinating said halogenated aromatic compound. The preferred cathode is mercury and the preferred anode is titanium coated with ruthenium dioxide. The cell additionally contains an electrolyte soluble in the solvent and a source of hydrogen ions (eg. HCl). The preferred solvent is a cyclic ester (eg. propylene carbonate). The equipment for practicing the process of the present invention conveniently can be set up in the field for treating PCB contaminated transformer oil in electrical transformers.