Conveyors: fluid current – Conduit – Having fluid nozzle
Patent
1991-12-27
1994-02-08
Mitchell, David M.
Conveyors: fluid current
Conduit
Having fluid nozzle
406 92, 406 95, 241 39, 110238, 110264, 110347, 2394245, 239117, 2394173, 239405, B65G 5352
Patent
active
052844056
ABSTRACT:
A method and apparatus for injecting sludge into a kiln includes a pump for pumping sludge, a conduit for conveying sludge to the kiln including an attrition portion for attriting the sludge into smaller particles, and a conduit enclosing the attrition segment for entraining the particles in a stream of combustion air to carry the particles into a kiln. The attrition portion includes a plurality of passageways connected to a source of compressed air to provide a plurality of jets of air to attrite the sludge into discrete particles and aid in ejecting the sludge from the conduit. In a preferred embodiment, the attrition segment includes nested, frusto-conical segments; each having a plurality of passageways which project jets of compressed air radially inwardly to slice the sludge mass within the segment into smaller particles. As the particles exit the attrition segment, they enter an extension tube having a helical internal rib which imparts a swirling motion to the particles. The particles then become entrained in combustion air flowing from an air conduit enclosing the attrition segment and are carried into the kiln in a shaped cloud.
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Hoge Gary C.
Mitchell David M.
Systech Environmental Corporation
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