Luminant – Oak Grove Power Station
- Owner: Luminant Power
- Project: Coal, Limestone, and Gypsum Handling Systems
- Location: Oak Grove Power Station, Franklin, Texas
- Scope: Engineering, Procurement and Construction Management
Project Background
Roberts & Schaefer Company was awarded a turnkey contract from Fluor Enterprise, Inc. for engineering, procurement, and construction management of the coal, limestone, and gypsum handling systems at Luminant Power’s Oak Grove Power Station in Franklin, Texas. The systems will be completed in 2009.
The coal handling system is designed to receive coal from trains at the rapid discharge rail unloading facility. The received coal is transferred to a 7,000–ton capacity storage silo. The silo loading chute work has a diverter gate to divert coal to a 10,000–ton additional storage pile adjacent to the silo. The unloading and stockout rate is 4,800 TPH. The coal is reclaimed from the storage silo by four variable speed belt feeders. The coal is reclaimed from the storage pile by two variable speed belt feeders. The dual conveyor total reclaim rate from either system is 3,000 TPH.
At the crusher building the coal is crushed by two 1,500 TPH crushers before being transferred on dual conveyors to the plant transfer tower. The plant surge hopper has four variable speed belt feeders discharging to the four plant distribution conveyors. Units 1 & 2 both have two rows of silos. The five silos per row are each feed by a reversing shuttle conveyor.
All areas of the coal handling system are provided with bag house dust collection or wet dust suppression and the distribution conveyor has washdown.
The limestone handling system is designed to receive limestone at the limestone storage building. Limestone is delivered to the building by truck and reclaimed from the storage pile with a chain reclaimer fed by mobile equipment. The limestone is conveyed at 350 TPH to two storage silos at the limestone preparation building.
The gypsum handling system is designed to receive gypsum from the process filters and convey it at 150 TPH to the 400–ton load–out silo. Gypsum is reclaimed by a rotary plow feeder and loaded into either railcars or trucks with a telescopic chute.
Ancillary systems for the coal, limestone, and gypsum include service water.