Patent ID: 8524045

Claim:
A system for purifying a silane-containing stream comprising silane and one or more compounds having a boiling point less than silane and being substantially free of trichlorosilane, tetrachlorosilane and tetrafluorosilane, the system comprising: a silane-containing stream conveying apparatus for conveying the silane-containing stream to a light-ends distillation column, wherein the silane-containing stream conveying apparatus is operatively connected to the light-ends distillation column; a light-ends distillation column for producing a silane-depleted overhead fraction and a silane-enriched bottoms fraction relative to the silane-containing stream, the silane-depleted overhead fraction comprising silane and compounds having a boiling point less than silane; a condenser for condensing a portion of the silane in the silane-depleted overhead fraction produced from the light-ends distillation column; and a gas-liquid separator for producing a gaseous stream and a liquid stream containing condensed silane.