JET BURNER TYPE PROCESSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To carry a matter to be handled surely with no residue to the upper section of a processing bath even when hot gas is jetted at low rate by an arrangement wherein the hot gas jetted from a jet burner toward the bottom of the processing bath flows along a curved surface thereat and acts to blow up the matter being handled toward the upper section of the processing bath. SOLUTION: A jet burner 2 provided at the upper section of a processing bath 1 combusts pressurized fuel 31 and compressed air 32 in a combustion chamber 41 and produced heat gas 11 is jetted from a jet opening 42. High speed hot gas flow in the center of the heat gas 11 is converted from downdraft into updraft along the bottom part 5 of the processing bath 1 having substantially double U-shaped vertical cross section. In the updraft, a part 15 of the hot gas is discharged from a discharge opening 4 and the remainder 14 circulates the processing bath 1 internally and flows toward the jet opening 42 of the jet burner 2. A matter 21 to be dried fed from a feeder 3 is thereby blown up to the upper section of the processing bath 1 and then crushed and dried while being circulated.