Fluidized bed reactor made of a nickel-chrome-molybdenum alloy for the synthesis of trichlorosilane
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United States of America Patent
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Issued Date -
Mar 11, 2004
app pub date -
Jun 19, 2003
filing date -
Dec 21, 2000
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Abandoned
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Abstract
The invention relates to a fluidized-bed reactor for the production of trichlorosilane by reacting silicon with silicon tetrachloride, hydrogen and optionally hydrogen chloride at a high pressure and high temperature. According to the invention, the fluidized-bed reactor, at least on the surface facing towards the reaction chamber, is made of a nickel-chrome-molybdenum-(NiCrMo)-alloy with a chrome proportion of at least 5 weight percent, an iron proportion of less than 4 weight percent and an additional proportion of 0-10 weight percent consisting of other alloy elements. The invention also relates to a method for producing trichlorosilane in said fluidized-bed reactor and to the use of said trichlorosilane.
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