F - Mech Eng,Light,Heat,Weapons – 23 – Q
Patent
F - Mech Eng,Light,Heat,Weapons
23
Q
110/15
F23Q 9/00 (2006.01) F23D 1/00 (2006.01)
Patent
CA 1187339
ABSTRACT OF THE DISCLOSURE A method is provided herein for igniting a pulverized- coal pilot-burner flame for a pulverized-coal annular burner flame having an internal back flow region, with the ignition energy being introduced centrally into the interior of the back flow region of the pulverized-coal annular burner flame. To ignite the pilot-burner flame during the process of the initial ignition, at constant primary and secondary air flow and an air coefficient ? = 1.1 to 0.4, one or more times a powder-laden air/powder mixture is supplied to the pilot-burner at a powder-laden air/powder weight ratio of 1.0 to 0.2. After ignition has been effected, a specified coal flow is continuously added to the pilot-burner flame at the fixed air coefficient ? = 1.1 to 0.4. This procedure minimizes the initial ignition energy and, at the same time, assures a reliable and stable ignition.
398256
Borden Ladner Gervais Llp
L. & C. Steinmuller G.m.b.h.
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