C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
202/46
C10B 27/00 (2006.01) C10B 21/18 (2006.01)
Patent
CA 1103607
ABSTRACT An ejector style exhaust gas recirculation jet is disclosed, for use in the underjet firing system of a coke oven battery, wherein a long throat of conventional diameter is combined with a non-tapered, reduced radius inlet trumpet and a straight nozzle positioned out of the entry flow path of hot exhaust gases. The present invention reduces deterioration of the nozzle from hot gas bombardment and at the same time stabilizes flow rate and pressure differentials in the entry and exit flues connected to the ejector resulting in more reliable and precise controlability of the coke oven combustion system.
303613
Borden Ladner Gervais Llp
Koppers Company Inc.
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