B - Operations – Transporting – 03 – C
Patent
B - Operations, Transporting
03
C
B03C 3/00 (2006.01) B01D 53/00 (2006.01) B01D 53/08 (2006.01) B01D 53/32 (2006.01) B01D 53/50 (2006.01) B01J 8/12 (2006.01) B03C 3/014 (2006.01) B03C 3/145 (2006.01) C03B 3/02 (2006.01) C03B 5/237 (2006.01)
Patent
CA 2145083
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 prereac- tor 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 mix- ture 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 me- chanical agitation.
Edmeston Ab
Gowling Lafleur Henderson Llp
LandOfFree
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