Cast air nozzle
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United States of America Patent
Stats
-
Jun 7, 1988
Grant Date -
N/A
app pub date -
Sep 21, 1987
filing date -
Sep 30, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cast air nozzle is adapted to be mounted on the bottom of a combustor, particularly a fluidized-bed combustor. The air nozzle comprises a substantially gun-shaped body having a substantially horizontal upper part with a front portion and a rear portion, and a substantially vertical lower part with a through, substantially vertical inlet duct, two substantially horizontal outlet ducts in the upper part extending from the upper end of the inlet duct and opening at the front end of the front portion. The outlet ducts diverge towards the front end of the front portion, whereby an air current flowing through the air nozzle is caused to leave the nozzle in the form of horizontal diverging air jets. The upper part has at the front portion a horizontal planar upper surface and at the rear portion a backwardly-downwardly inclined upper surface, said surfaces forming an angle with each other, whereby the material in the combustor, which is conveyed across the air nozzle, does not collect on the upper portion. Each outlet duct tapers towards its orifice so as to prevent the material in the combustor from being conducted into the air nozzle and causing clogging thereof, or the bed material from flowing back.
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