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AssigneeDr. C. Otto & Comp. G.m.b.H.
InventorsCarl-Heinz Struck, Ralf Schumacher, Ingomar Kohler, Gerd-Ullrich Leppert
Estimating the term…
A refractory brick is installed in a transfer flue with vertical orifices disposed between, on the one hand, the regenerators or recuperators and, on the other hand, the combustion chambers of industrial gas-fired systems, particularly a coke oven. The refractory brick has parallel surfaces and the length of the orifices in the brick is at least six times their diameter. The sum of the cross-sectional areas of the orifices is from 0.75 to 1.5 times the flow cross section of the upwardly-inclined portion of the transfer flue. The cross sections of the orifices can be cylindrical or elliptical. The orifices can be longitudinal slots whose cross-sectional areas are bounded by semicircles and whose cross-sectional length is not greater than three times the diameter of the semicircles.
In a transfer flue having a vertical flue part downstream of an upwardly-inclined flue part disposed between a heat-storage means and a combustion chamber and through which preheated combustion-supporting media flow, a refractory brick having rectangular side walls disposed in said vertical flue part of said transfer flue, vertical orifices extending through said brick with the sum of the cross-sectional areas of the orifices being from 0.75 to 1.5 times the cross-sectional area of said upwardly-inclined flue part of the transfer flue, and a ratio of greater than 6:1 between the length-to-diameter of the orifices.
Dependencies are inferred from the claim text.