. Transactions. Fig. 2.—Stirling Boiler with Bradshaw Fig. 3.—Cut through Bradshaw Stove Burner. Figs. 1 and 2 clearly show the general principles of the Bradshawboiler burner. The gas enters at A into the converging section of theburner by which its velocity is gradually increased as it approaches thethroat B. At B are placed the air-inlet openings C, which are regulated 408 DEVELOPMENT IN THE COMBUSTION OF BLAST-FURNACE GAS by the adjustable scroll dampers D. From this point onward theburner is diverging and the velocity of the mixture of gas and air isreduced by the expanding tube
. Transactions. Fig. 2.—Stirling Boiler with Bradshaw Fig. 3.—Cut through Bradshaw Stove Burner. Figs. 1 and 2 clearly show the general principles of the Bradshawboiler burner. The gas enters at A into the converging section of theburner by which its velocity is gradually increased as it approaches thethroat B. At B are placed the air-inlet openings C, which are regulated 408 DEVELOPMENT IN THE COMBUSTION OF BLAST-FURNACE GAS by the adjustable scroll dampers D. From this point onward theburner is diverging and the velocity of the mixture of gas and air isreduced by the expanding tube E, which ultimately discharges into thecombustion chamber. At G, additional secondary air enters around thetube E. The burner is designed in such a manner that the velocity ofgas and air in the expanding- tube E is sufficiently high to prevent backflashing. Should a large reduction in the quantity of gas cause backflashing, the return of the gas supply automaticallj^ forces the flameback out of the discharge tube. In the stove burner, where the round shape
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
