CORROSION AND FOULING REDUCTION IN HYDROCHLOROSILANE PRODUCTION
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United States of America Patent
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Issued Date -
Oct 23, 2014
app pub date -
Apr 2, 2014
filing date -
Apr 19, 2013
priority date (Note) -
Abandoned
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Abstract
Methods for reducing iron silicide and/or iron phosphide fouling and/or corrosion in a hydrochlorosilane production plant are disclosed. Sufficient hydrogen is added to a silicon tetrachloride process stream to inhibit iron (II) chloride formation and reduce iron suicide and/or iron phosphide fouling, superheater corrosion, or a combination thereof. Trichlorosilane also may be added to the silicon tetrachloride process stream.
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