Fuel Injection:
Eductors convey fuels from a flow control or metering device (screw feeder, weigh belt, screw conveyor) at flow rates below 7 - 10 tons/hr, over distances less than 300 ft (100 m):
Coal, Coke
Dried Sludge
Waste Fuels
biomass: rice hulls, cottonseeds, bean shells,
Sorbent and Additive Injection:
Inject pulverized limestone, and other calcium-containing additives into reactors/fluidized beds for SOx control; boiler additivesfor inhibiting slag build-up; MgO for ash cond't'ing.
Limestone: Pellets, Pulverized
Lime, Calcium Carbonate, Sodium BiCarb, etc.
Calcium Carbonate, Sodium BiCarb,
Fluidized Beds
Convey all of the above, plus spent bed material can be recirculated or reinjected into the fluidized bed at temperatures up to 1500°F.