Process for producing styrene
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United States of America Patent
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-
Oct 22, 1985
Grant Date -
N/A
app pub date -
May 23, 1984
filing date -
May 26, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing styrene by the dehydrogenation of ethyl benzene whereby the ethyl benzene in a mixture with steam is introduced into a tubular reactor, the tubes of which are heated by molten salts. The structural parameters of this process are the tube diameter which should be 20 to 35 millimeters, the temperature of the molten salts which should be 580.degree. to 660.degree. C. and at most 20.degree. C. higher than the reaction temperature at the catalyst and the weight ratio of steam to ethyl benzene of the feed stock which should be 0.5 to 1. The process saves energy and increases efficiency by reducing the steam consumption.
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