Combustion – Structural installation
Patent
1994-06-20
1997-06-03
Price, Carl D.
Combustion
Structural installation
431266, 431278, F23D 2300
Patent
active
056347880
ABSTRACT:
A nozzle for a pilot light for a flare stack, the nozzle being formed of a housing defined by an encircling cylindrical wall, with radially extending openings formed circumferentially around the encircling wall, and is made of material resistant against breakdown in a sour gas environment at temperatures at least less than 1200.degree. C., preferably 98% by weight alumina ceramic. A cage holds the nozzle, which includes a base plate having a central aperture and first and second sides, a tube extending into the aperture from the first side of the base plate and fixed to the base plate, and plural retainers extending from the base plate and enclosing the nozzle. To form a pilot for a flare stack, a gas conduit is connected into an interior cavity of the nozzle. The cage is attached to a flame stack. Spaced electrodes form a spark gap adjacent one of the openings in the nozzle. A source of electrical power is connected to one of the first and second electrodes. One electrode extends in a ring, while the other extends in a plane. The cage is preferably grounded, with one electrode connected to the cage, and the second electrode is spaced from the cage and free to move in ambient wind conditions.
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