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. 22, 1994
Filed:
May. 01, 1992
John D Sachse, Pittsburgh, PA (US);
Larry R Eisenstatt, Penn Township, Westmoreland County, PA (US);
Walter P Drosjack, Penn Township, Westmoreland County, PA (US);
David H Weigle, Normalville, PA (US);
C Patrick Keegan, South Huntingdon Township, Westmoreland County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Method and apparatus for the incineration and vitrification of radioactive waste materials. Waste materials are fed into a melter containing molten glass wherein the waste is incinerated and vitrified into the glass matrix. Gases produced are combusted in an extended plenum area preferably designed to provide a residence time of at least 3 seconds. A portion of the sulfur compounds in the combustion gases are incorporated into a solid matrix of gypsum by contacting the sulfur compounds with an aqueous solution and calcium hydroxide.