C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
48/23
C10J 3/54 (2006.01) B01J 8/00 (2006.01) C10B 49/10 (2006.01) C10J 3/50 (2006.01)
Patent
CA 1120722
Abstract of the Invention In the introduction of fresh carbonaceous particles into a fluid-bed reaction zone at injection velocities in excess of 20 ft/sec, a shroud gas is passed through a shroud passage on the injection nozzle at a velocity in excess of about 750 ft/sec, preferably at from about 1,000 to about 5,000 ft/sec, in sufficient quantities to supply a substantial portion of the overall energy input into the reaction zone for dispersion of the fresh particles and for breaking up of any agglomerates formed upon injection of the fresh particles into the reaction zone. By accommodating the agglomerating tendencies of the fresh feed material, the high energy shroud gas effectively contributes to the prevention of defluidization of the bed. The shroud gas may be inert or may comprise a gaseous reagent that reacts with the fresh carbonaceous particles in the reaction zone. The energy supplied by the shroud gas desirably is at least about 80% of said energy input to the reaction zone.
336155
Liss Barry
Welter Charles R.
Hopley William G.
Union Carbide Corporation
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