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:
Jun. 25, 1996
Filed:
May. 25, 1995
Jeffery C Alexander, Newbury, MA (US);
Edmeston AB, Vastra Frolunda, SE;
Abstract
A method for reducing pollution emissions from a glass melting furnace using electrostatic granular bed (EGB) technology is disclosed. In one embodiment, sorbent dust containing an alkaline earth metal material, e.g., calcium, is injected into a prereactor for reaction with furnace exhaust gases. A layer of calcium material forms over the granules. These granules are co-mingled with granules from an EGB filter which, over a period of time, retain a layer of low resistivity alkali metal salt. The resulting mixture of granules maintains a high resistivity and therefore prolongs the life of granules used in the EGB filter. In an alternative embodiment, the granules in the EGB filter are themselves formed from an alkaline earth metal material. The granules react with sulfur compounds in the exhaust gas and form a layer of alkaline earth metal sulfates and sulfites in the granules. Simultaneously alkali metal-containing particles are deposited on the granules. The accumulated layers of pollutants are easily removed by mechanical agitation.