Control system for particulate material drying apparatus and process
AssigneeGreat River Energy
InventorsMark A. Ness, Matthew P. Coughlin, John M. Wheeldon, Adam M. Johnson
Life of this patent
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Abstract
A control system for controlling the utilization of heated waste streams for fluidizing particulate matter such as coal in a fluidizing bed dryer. The control system includes a number of graphic user interfaces that allow an operator to more easily monitor and/or control the various regulator devices. The control system controls coal handling or transportation, fluid handling or flow, and the discharge of discarded or separated coal from the dryer.
Claims2
A system for controlling the operation of a low-temperature, open-air process for reducing moisture contained within particulate material, wherein such process incorporates a wet particulate material storage bunker, a feed conveyor, a dryer apparatus, a first heat exchanger operatively connected to the dryer apparatus, a first waste heat source provided to the first heat exchanger for delivering heat content contained within the first waste heat source to the dryer apparatus, a second heat exchanger operatively connected to the dryer apparatus, a second waste heat source different in type from the first waste heat source provided to the second heat exchanger for delivering heat content contained within the second waste heat source to the dryer apparatus, a discharge conveyor, and a dried particulate material discharge destination, such controller system comprising:
- (a) means for regulating the operation of a discharge gate on the wet particulate material storage bunker for controlling the discharge of particulate material from the wet particulate material storage bunker;
- (b) means for regulating the operation of the feed conveyor for transporting the wet particulate material to the dryer apparatus;
- (c) means for regulating the delivery of the first waste heat source to the first heat exchanger;
- (d) means for regulating the delivery of the second waste heat source to the second heat exchanger;
- (e) means for maintaining the particulate material within the dryer apparatus exposed to the combination of first and second heat sources for a sufficient temperature and time duration to achieve the desired degree of moisture reduction to produce dried particulate material;
- (f) means for regulating the operation of a discharge gate on the dryer apparatus for controlling the discharge of the dried particulate material from the dryer apparatus;
- (g) means for regulating the operation of the discharge conveyor for transporting the dried particulate material discharged from the dryer apparatus to the dried particulate material discharge destination.
2-30. (canceled)
Dependencies are inferred from the claim text.