Patent ID: 6019948
Filing Date: 2000-02-01
Classification: C01B

Abstract:
An apparatus for purifying boron trichloride by removal of phosgene, said apparatus comprising:a reactor comprising a vessel having a head space, an inlet to receive said boron trichloride beneath said head space, an outlet to discharge an overhead stream comprising carbon monoxide and chlorine and means for providing at least one source of electromagnetic radiation having a wavelength in a range of between about 230 and about 254 nanometers to decompose said phosgene and to produce said carbon monoxide and chlorine as vapor and liquid phases in equilibrium with one another and in solution with said boron trichloride; andmeans located in a bottom region of said vessel for producing a vapor stream rising through said boron trichloride and composed of a substance to disturb said equilibrium and to cause said carbon monoxide to be carried out of solution and collect in said head space.