C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
202/44
C10B 43/10 (2006.01) C10B 21/10 (2006.01)
Patent
CA 1176201
ABSTRACT OF THE DISCLOSURE A device for feeding purging and degraphitizing air into pipes for rich gas leading to the heating walls of coke ovens. A first cross-section opening is connected to the pipe for rich gas and can be locked with a first gate and is adapted to initially release only a relatively small aperture cross- section for passing purging air. A second cross-section opening is connected to the pipe for rich gas and can be locked with a second gate and is adapted to release successively with a time delay after the first cross-section opening a relatively larger cross-section for passing degraphitizing air. An exchangeable screen can be placed in the opening for the first cross-section opening. The device prevents deflagrations caused by feeding inaccurate amounts of purging air into the pipe for rich gas. -1-
383149
Fetherstonhaugh & Co.
Krupp-Koppers G.m.b.h.
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