Patents Assigned to Fluidfire Development Limited
  • Treatment furnace
    Patent number: 4013279
    Abstract: A furnace for heating workpieces in a controlled atmosphere comprises a bed of particles which can be fluidized. The bed is divided by a partition into a treatment zone and a combustion zone. Fuel and air are fed to the combustion zone and burned therein to heat the bed. A treatment gas which provides the required atmosphere is fed to the treatment zone and particles of the bed are permitted to migrate from one zone to the other, thereby carrying heat from the combustion zone to the workpiece in the treatment zone.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: March 22, 1977
    Assignee: Fluidfire Development Limited
    Inventor: Michael John Virr
  • Combustion with fluidizable bed
    Patent number: 3970011
    Abstract: A furnace for carrying out combustion of refuse or for reclaiming particles contaminated with combustible material comprises a bed of particles which is fluidized by feeding air and gaseous fuel into the bed. The refuse or contaminated material is fed into the bed and it is heated by combustion of the fuel therein. Incombustible residue is discharged from the bed over a weir. The furnace includes a heat exchanger for extracting heat from a part of the bed which can be fluidized selectively.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: July 20, 1976
    Assignee: Fluidfire Development Limited
    Inventors: Michael John Virr, Douglas Ernest Elliott