POTENTIAL FLUIDIZATION DEVICE FOR CONVEYING POWDER MATERIALS IN A HYPERDENSE BED

摘要

DEVICE FOR TRANSPORTING POWDER (12) COMPRISING A CONVEYER (3), WHICH INCLUDES A LOWER CHANNEL (6) IN WHICH A GAS CIRCULATES, AND AN UPPER CHANNEL (7), DESIGNED FOR THE CIRCULATION OF POWDER AND SAID GAS, SAID LOWER CHANNEL AND SAID UPPER CHANNEL BEING SEPARATED BY A POROUS WALL (5) THAT SAID GAS CAN PASS THROUGH, THE LOWER CHANNEL BEING SUPPLIED WITH GAS AT A PRESSURE ALLOWING THE POTENTIAL FLUIDIZATION OF SAID POWDER IN SAID UPPER CHANNEL, SAID UPPER CHANNEL BEING PROVIDED IN ITS UPPER PART WITH TRANSVERSE WALLS (50, 51, 52; 53; 50.I, 50.N) PLACED SO THAT THEY DELIMIT WITH THE UPPER WALL OF SAID UPPER CHANNEL AT LEAST ONE UPPER ZONE IN WHICH A GAS BUBBLE UNDER PRESSURE IS FORMED (20.1, 20.2; 20.I, 20.(I+ 1), 20.N) AS A RESULT OF PUTTING SAID AIR CHUTE UNDER POTENTIAL FLUIDIZATION PRESSURE. AT THE LEVEL OF AT LEAST ONE BUBBLE SO FORMED, THE WALL OF THE UPPER CHANNEL INCLUDES A MEANS OF REMOVAL FOR FLUIDIZATION GAS PROVIDED WITH A MEANS OF CREATING PRESSURE DROP (100.1, 100.2; 110.1, 110.2; 120.1, 120.2; 130, 61, 62; 140.I, 140. (I+1), 140.N), WHICH CREATES A SUBSTANTIALLY CONSTANT PRESSURE DROP.