Engineer,Design, Construct,Test,and Evaluate a Pressurized Fluidized Bed Pilot Plant Using High Sulfur Coal for Production of Electric Power. Phase II Pilot Plant Design. Pilot Plant Configuration Report.

摘要

The configuration selected for the application of the pressurized fluidized bed (PFB) process for direct combustion of high sulfur coal (greater than or equal to 3%) in a combined gas turbine/steam turbine cycle includes: (a) gas turbines to provide compressed air for coal combustion (exp 1 /sub 3of the airflow) and air cooling in the PFB heat exchanger (exp 2 /sub 3of the airflow); (b) recombination of the total compressor airflow after heating for expansion in the compressor drive turbine and further expansion in a power turbine which drives an alternator; (c) gas turbine waste heat recovery in a steam boiler which powers a steam turbine/alternator. The selected configuration limits the hot gas flow which must be passed through a particulate clean-up system to approximately exp 1 /sub 3of the total gas turbine flow and reduces the concentration of corrosive combustion products in the recombined turbine gas steam to exp 1 /sub 3of the concentration which exists in the combustion gas exiting the PFB. The PFB Pilot Plant design incorporates an existing power plant with considerable utilization of currently operating equipment. The basic equipment and functions are listed:coal and sorbent unloading and storage systems,coal sizing and drying system,coal and sorbent feed system,remote start-up combustors liquid or gas fuel fired,PFB combustor with ash handling equipment,combustor bed heat exchange system,gas cleaning systems,combustion and cooling air compressor and turbine,gas turbin alternator drive,alternator and switch gear,waste heat recovery boiler,and a computerized control system. (ERA citation 03:054899)