Patent ID: 8105564

Claim:
A plant for the continuous production of monosilane and tetrachlorosilane by catalytic dismutation of trichlorosilane at an operating temperature and a pressure of from 1 to 50 bar abs., comprising the following units: a countercurrent reactor ( 1 ) having a double wall ( 2 ), at least one catalyst bed ( 4 ) which is located in the countercurrent reactor ( 1 ) and is provided with catalyst ( 3 ), a condenser ( 5 ) at the top of the countercurrent reactor ( 1 ), a vaporizer unit ( 6 ) at the bottom of the countercurrent reactor ( 1 ), at least one trichlorosilane feed line ( 7 . 1 , 7 . 2 ) for the introduction of trichlorosilane (A) into the countercurrent reactor ( 1 ), a heat exchanger ( 7 ), with the trichlorosilane firstly conveyed by line ( 7 . 1 , 7 . 2 ) via the heat exchanger ( 7 ) and preheated there by a bottom product from the vaporizer unit ( 6 ) and, for this purpose, the bottom product is fed by line ( 6 . 1 , 6 . 2 ) via the heat exchanger ( 7 ) into the double wall ( 2 ) at a level in the lower part of the countercurrent reactor ( 1 ) and discharged ( 2 . 1 , B) from the double wall ( 2 ) at a level in the upper part of the countercurrent reactor ( 1 ), a condensation unit ( 8 ) installed downstream of the condenser ( 5 ), and a subsequent distillation column ( 9 ) having an outlet for monosilane (C).