00/03628 The Lakeland McIntosh Unit 4 advanced circulating fluidized bed combined cycle demonstration project

Abstract

In December 1997, the City of Lakeland, Florida, signed a Cooperative Agreement with the US Department of Energy (DOE) that will facilitate the demonstration of the Advanced Circulating Fluidized-Bed Combined Cycle (ACFBCC) technology being developed by Foster Wheeler. The project will be conducted under the DOE Clean Coal Technology Program at the City of Lakeland's McIntosh Power Station in Lakeland, Florida. In August 1998, Lakeland released Foster Wheeler to begin preliminary engineering and permitting support of the demonstration plant. The Lakeland McIntosh Unit 4 Project is a nominal 240 MWe combined cycle plant that integrates the partial gasification of coal with pressurized circulating fluidized bed (PCFB) combustion. The partial gasification process produces a low Btu syngas and a coal char residue. The latter is burned in a PCFB boiler producing steam for a steam turbine and hot vitiated air/flue gas for a gas turbine. The syngas, in turn, is burned in the gas turbine (topping combustion) to heat the vitiated air to over 2,300 F. The plant is designed to burn both low and high sulfur coal and incorporates a Siemens V64.3 gas turbine with a 2,400 psig/1,000 F/1,000 F steam turbine. This paper describes the demonstration plant and identifiesmore » its design status.« less