The project included the installation of a new refuse bunker with two refuse cranes for waste storage and handling. The combustion system in each train contains a feed chute, ram feeder, roller grates and a three pass boiler supplied under DBA license with primary and secondary forced draft fans.
A dry scrubber, fabric filters and an induced draft fan make up the balance of each train. The outlet flue gas from each train is ducted to a new common flue stack. A urea injection system was provided to control NOx emissions. An ash handling system was installed to handle bottom and fly ash. A metals recovery system was also provided to recover ferrous and nonferrous metals. A new electrical substation dedicated to the waste-to-energy plant was installed for export of electricity to the utility.
The combustion units use DBA technology incorporating the roller grate system with a parallel flow combustion chamber to combust the municipal solid waste and generate steam. The steam produced is supplied to the existing turbine generators and plant auxiliary equipment. The two existing turbine generators were each designed nominally for an inlet throttle flow of 383,000 pounds per hour of steam to generate 255 MW of electricity each. The existing RDF facilities were shut down, and the EFW boilers were converted to fossil fuel firing for backup and supplemental steam supply.
The project achieved a lost time incident rate of 0.88 compared to the western New York rate of 10.0, setting new safety milestones for the region.