Description
Class F23C : METHODS OR APPARATUS FOR COMBUSTION USING FLUENT FUEL
Subclass 1/06: Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being fluent (combustion apparatus characterised by the combination of two or more combustion chambers F23C 6/00; pilot flame igniters F23Q 9/00) lump and pulverulent fuel