B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/167, 23/338
B01D 7/00 (2006.01) C01F 7/00 (2006.01) C01F 7/56 (2006.01)
Patent
CA 1066871
Abstract of the Disclosure Recovery of selectively constituted high purity aluminum chloride from the gaseous effluent of the chlorination of sodium contaminated alumina including the steps of purifying such gaseous effluent to provide essentially contaminant-free aluminum chloride in gaseous form in a gaseous carrier through selectively cooling the hot gaseous effluent to a first temperature range well above the ambient condition condensation temperature of aluminum chloride yet sufficient to condense a selective portion of the condensable constituents therein including a substantial portion of the sodium aluminum chloride values therein without condensing appreciable mounts of aluminum chloride, initially separating from the cooled gaseous effluent entrained particles and initially condensed constituents, further reducing the temper- ature of the residual cooled gaseous effluent from the first stage separation to a second predetermined lower temperature range still above the condensation temperature of aluminum chlo- ride to effect a further selective condensation and separation of the remaining condensable constituents wherein and directly desubliming the essentially contaminant-free gaseous aluminum chloride values from the purified residual gaseous effluent to selectively constituted solid form in a fluidized bed of solid particles of aluminum chloride at controlled temperatures.
151088
King Larry K.
Kloap Nicholas
Knapp Lester L.
Remper John A.
Schoener Ronald C.
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