Dual phase fuel feeder for boilers

摘要

A dual phase fuel feeder is disclosed that can be used to provide both solid fuels and liquid fuels to a boiler, such as a fluidized bed boiler. The fuel feeder includes a sloped chute which defines a solid feedpath. Gas distribution nozzles are located at the base of the fuel feeder, and secondary nozzles are located so as to be able to distribute a liquid or particulate fuel into the solid feedpath. This permits the liquid fuel to contact the solid fuel and be carried into the fluidized bed instead of becoming suspended above the bed.

主权项

1. An apparatus comprising:
a fuel feeder including: a sloped chute having a base configured to connect with a boiler, gas distribution nozzles configured to inject gas into the base with the injected gas oriented to propel solid fuel fed into the sloped chute into a boiler to which the base of the sloped chute is connected, and secondary nozzles different from the gas distribution nozzles and configured to inject at least a fluid fuel to mix with solid fuel after the solid fuel is fed into the sloped chute.