Coal stacking tower dust control system
AssigneeDravo Corporation
InventorsEverett D. Thompson, Dennis D. Sousek
Life of this patent
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Abstract
An improved stacking tower is equipped with a dust pollution control system which maintains a negative pressure within the tower and comprises an exhaust means, dust collection and removal means and movable closure means for closing the discharge openings of the tower. A modulating air damper is also provided to adjust the volume of air passing through the tower.
Claims8
In a stacking tower for receiving and depositing solid material in a stockpile in an open atmosphere subject to wind currents comprising a vertical tower having a series of vertically spaced pairs of openings, each of said openings of a pair being in opposed sections of the wall of the tower, a charging means for charging solid material into the upper region of the tower for flow downwardly therethrough and out of a pair of said openings when the level of solid material reaches said pair of openings, and movable closure means for closing each of said openings when solid material is not flowing therethrough, the improvement comprising:
- inlet means for providing air into the upper region of said tower;
- damper means to regulate the volume of air passing through said inlet means;
- exhaust means for exhausting dust laden air from the upper region of said tower;
- said exhaust means providing a negative pressure within said tower during charging of solid material therethrough, said exhaust means cooperating with said damper means to maintain the aforementioned pressure within the tower as the tower fills with coal and the volume of air within the tower decreases;
- and
- dust collecting means for removing dust from said exhausted dust laden air.
Dependencies are inferred from the claim text.