J. A. Jones Construction Company
Cogeneration Installation -- Coal Yard Facility
Fort Drum, New York
R&S provided engineering, procurement, and construction services
for a complete coal yard facility servicing a cogeneration installation
in Fort Drum, New York. Secondary project items include dust collection
and suppression, bin vent filters, and ventilation. The project
was completed in about 16 months.
Unit train deliveries feed the coal yard. Ahead of the unloading
hopper is a gas-fired enclosed thawing shed, with a 4-car soaking
area. Rail cars are unloaded using a side-mount car checker into
twin compartment 60-ton reclaim hoppers. The unloading hoppers
are fitted with a 12-inch X 12-inch grizzly and full-area coal
valves. At 150 TPH, twin-vibrating feeders reclaim the coal to
a 36-inch crusher feed conveyor, which is fitted with a belt scale
and magnetic separator for removing tramp iron.
Reclaimed coal passes over an "as received" two-stage
sampling system and is discharged to a vibrating scalping screen,
which has bypass provisions before it. Oversize coal from the
scalping screen discharges to a 300 TPH crusher. Crushed product
and screened-through product are combined and moved by a 30-inch
stock out conveyor to a storage belt. The stock out conveyor discharge
includes a telescopic chute to minimize fugitive dust.
Under the active storage pile, a reclaim tunnel houses a 30-inch
reclaim conveyor, fed by twin vibrating feeders. Each feeder is
in turn fed by high-capacity pile dischargers. The 30-inch reclaim
conveyor returns the coal to the boiler block. The plant location
and extreme climactic conditions require that all conveyors be
housed in enclosed galleries.
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