Westvaco – Cogen South Plant
- Owner: Westvaco
- Project: Coal and Wood Waste Handling System
- Location: Cogen South Plant, Charleston, South Carolina
- Scope: Engineering and Procurement
Project Background
Engineering, procurement and construction of a fuel blending system, limestone handling system, and gypsum handling system.
Roberts & Schaefer Company was awarded a contract from Westvaco for engineering and procurement of the coal and wood waste handling system at Westvaco’s Cogen South Plant in Charleston, South Carolina. The system was successfully completed and in operation in 1998.
The coal handling system is designed to receive coal in conventional bottom–dump railcars. The received coal is transferred to the crusher building at a capacity of 250 TPH. At the crusher building the coal is crushed by a 250 TPH crusher before being conveyed to the first coal yard silo or the transfer conveyor to the second coal yard silo.
The coal is reclaimed from the two silos by two belt feeders to either of the dual reclaim conveyors for a reclaim capacity of 100 TPH each. The dual conveyors transfer the coal to the three silos at the power plant. The center silo is fed by chute work and the end silos are fed by dual reversing conveyors. The crushing and storage areas of the coal handling system are provided with bag house dust collection.
The wood waste conveying system is designed to receive wood waste at the existing bark screen building. The received wood waste is transferred to the wood hog building at a capacity of 200 TPH. At the wood hog building the wood waste is reduced in size by one of two 100 TPH wood hogs before being conveyed to the hogged wood storage pile.
The wood is reclaimed from the storage pile by three variable rate drag reclaimers at 100 TPH each through a series of conveyors and transfer towers to the power plant wood waste metering bin. The live–bottom metering bin is discharged through six sets of discharge screw conveyors, three conveyors in each set.