Method and apparatus for protecting boiler ignitors

Details Method and apparatus for protecting boiler ignitors Method and apparatus for protecting boiler ignitors

1984-12-31

1986-09-23

Dority, Jr., Carroll B.

Combustion

Burner having electrical heater or igniter

Igniter in shelter chamber

431264, F23Q 300

Patent

active

046133020

ABSTRACT:
A method and apparatus for protecting ignitor probes used to ignite coal-fired furnaces, such as those used in coal-fired electric generation plants. The invention involves introducing a compressed gas such as compressed air or other inert gas into the ignitor support tube. The gas passes down the support tube and then exits just above the ignitor probe. The gas then passes over the ignitor probe and out into the furnace. The gas protects the probe by insulating it from the environment of the furnace, thus keeping it cool and free from combustion waste products.

REFERENCES:
patent: 2665748 (1954-01-01), Cornelius
patent: 2806518 (1957-09-01), Poole et al.
patent: 3150710 (1964-09-01), Miller
patent: 4228747 (1980-10-01), Smirlock et al.
Babcock and Wilcox Power Generation Group, "Special Operating Instruction for Type MPO Lighter".

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