Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1991-02-07
1992-06-30
Robinson, Ellis P.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
428408, 428920, 428282, 428226, 428292, 428138, 428184, 428906, 428213, 428 345, 428 37, 428215, 428218, 422129, 422158, 422199, 423349, 423350, C01B 33033, B01J 1902, B32B 900
Patent
active
051261120
ABSTRACT:
The present invention relates to an insulation system for a high temperature reactor in which chlorosilanes and hydrogen gases are present. The system described comprises an inner graphite radiant heat shield and an outer carbon-based, rigid, felt insulation of high density. The inner radient heat shield provides increased chemical stability at the hot face in a chlorosilane and hydrogen reactor. Also, the inner radient heat shield reduces the temperature at the interface with the carbon-based rigid felt, thereby reducing the reactivity of the chlorosilanes with the carbon-based rigid felt. The high density of the carbon-based rigid belt further reduces radiant heat loss. More importantly, the high density of the carbon-based rigid felt excludes the highly heat conductive hydrogen gas from the voids of the flet. The insulation system, as described, allows reactors containing chlorosilanes and hydrogen gases to be operated at higher and more efficient temperatures for longer periods of time.
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Boley William F.
Hemlock Semiconductor Corporation
Robinson Ellis P.
Watkins, III. William P.
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