Inventors:
Laurence F. Schmoyer - Edmond OK
Assignee:
Kerr-McGee Chemical Corporation - Oklahoma City OK
International Classification:
C01B 3506
Abstract:
This invention relates to the manufacture of boron trichloride from a molten salt bath comprising a naturally occurring boric acid salt or other boron-containing ore, carbon and chlorine gas. In accordance with the process of this invention, boron trichloride is produced in a single stage reaction by passing chlorine gas through as continuously fed molten boric acid salt rich layer in a reactor vessel which contains carbon. At least a portion of the gaseous products of the reaction are recovered and partially condensed to separate at least a crude boron trichloride liquid phase from the non-condensable gaseous products. The crude boron trichloride liquid phase then is subjected to a two-stage distillation from which is recovered a purified boron trichloride product.