Abstract: A device for producing solid aluminum chloride from gas containing gaseous aluminum chloride by means of a fluidized bed condenser. Between the inlet pipe for carrier gas and an outlet pipe for residual or waste gas there is a distributor plate with openings in the form of nozzles, at least one cooling facility, a feeding facility for the supply of gas containing gaseous aluminum chloride and a facility for drawing off the solid aluminum chloride. The outlet pipe for waste or residual gas is connected to the inlet pipe for carrier gas via a separator which separates out fine particulate aluminum chloride, which is then fed back to the bed to act as nuclei.

Abstract: The efficiency of a given reactor for the conversion of aluminum oxide bearing starting material by means of reducing and chlorinating gases or of carbon coated aluminum oxide bearing starting material by means of chlorinating gases in a solid/gas fluidized bed to yield aluminum chloride is improved by the addition of an inert, solid dilution agent to the bed. Whereas, as a result of the chemical reaction, the average particle size and bulk density of the reagent decreases in a batch process, and in a continuous process an equilibrium value is reached, the average particle size and the bulk density of the inert material remains unchanged. An initial average particle size of 60-80 microns proved successful; quartz, corundum, magnesium oxide of similar particle size and bulk density was added as dilution agent, and a gas flow rate of 2 to 30 cm/sec was attained along with quantitative conversion of the gaseous reagent.