Method of igniting a pulverized-coal pilot-burner flame

Details Method of igniting a pulverized-coal pilot-burner flame Method of igniting a pulverized-coal pilot-burner flame

1984-03-16

1985-02-26

Favors, Edward G.

Furnaces

Process

Burning pulverized fuel

110261, 110263, F23D 100

Patent

active

045012067

ABSTRACT:
A method of 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 .lambda.--1.1 to 0.4, once or more 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 .lambda.--1.1 to 0.4.

REFERENCES:
patent: 4221174 (1980-09-01), Smith et al.
patent: 4241673 (1980-12-01), Smith et al.

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