C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
196/127, 48/23
C10J 3/54 (2006.01) C10G 1/00 (2006.01)
Patent
CA 1143569
Abstract of the Disclosure Defluidization due to excessive agglomeration of fresh carbonaceous feed particles in a fluid-bed reaction zone is prevented by utilizing an overall mechanical energy input to the reaction zone above the minimum energy level needed for dispersion of the particular feed and to break up agglomerates that may tend to form upon injection of said fresh particles to said zone. The overall energy input comprises that supplied by the fluidizing-reagent gas employed; by the carrier gas for the fresh carbonaceous feed, either at conventional, low velocities or employed at high velocity and in sufficient quantity to furnish at least half of said overall mechanical energy input to the reaction zone; and by attrition jets positioned to break up agglomerates. At high injection velocities, the fresh particles may be preheated to a temperature within the plastic temperature range for the particles, thereby minimizing nozzle erosion at such high injection velocities without causing undue agglomeration of the particles. A wide variety of desirable processing alternatives may thus be employed while remaining within the permissible limits for the practical operation of fluid-bed reaction zones without defluidization due to excessive agglomeration of fresh coal or other carbonaceous feed materials.
336157
Albright Charles W.
Davis Hubert G.
Liss Barry
Welter Charles R.
Hopley William G.
Union Carbide Corporation
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