Patent ID: 6737361
Filing Date: 2004-05-18
Classification: B01D,C23C,C30B

Abstract:
A process for recycling a vapor-phase chemical comprising:introducing vapor-phase chemicals taken from the group consisting of NH3, N2O, SiF4, SiH4, TiCl4, N2, Ar, HCl, and SiCl4 and including pure H2 gas into a reactor with sufficient supplied energy to cause a first reaction in said reactor; exhausting gases from said reactor resulting from said first reaction; separating a non-purified hydrogen gas from said exhausted gases; venting said exhausted gases free of said non-purified hydrogen; purifying said non-purified hydrogen gas to generate a purified H2 gas; and thereafter introducing said purified H2 gas into said reactor along with additional vapor-phase chemicals including pure H2 gas into said reactor with sufficient supplied energy to cause a second reaction in said reactor.