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:
Nov. 19, 2002
Filed:
Oct. 12, 2000
Hitachi Zosen Corporation, Osaka, JP;
Abstract
The present invention relates to a method of decomposing organochlorine compounds such as dioxins reductively or catalytically. The organochlorine compounds such as dioxins and o-chloroanisole are decomposed in an aqueous alkali solution in the presence of a reducing agent or a catalyst. The alkali which can be used is at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate and aqueous ammonia. The reducing agent which can be used is at least one selected from the group consisting of sodium hydrosulfite, ascorbic acid, hydrazine, hydrazine hydrate, neutral hydrazine sulfate, hydrazine carbonate, sodium thiosulfate, sodium sulfite, potassium sulfite, hydroquinone, 4-methylaminophenol sulfate and Rongalite. The catalyst which can be used is at least one selected from the group consisting of activated carbon and titanium oxide.