Dehydrogenation process with improved heat recovery
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United States of America Patent
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May 25, 1993
Grant Date -
N/A
app pub date -
Dec 5, 1991
filing date -
Dec 5, 1991
priority date (Note) -
Expired
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Abstract
A process for making ethylenically unsaturated hydrocarbons from a saturated C.sub.3 -C.sub.5 hydrocarbon feed with improved heat recovery. The feed is partially vaporized against hot discharge gases from product compressors, completely vaporized with low pressure steam and preheated against hot reactor effluent, before being heated by a process heater to reaction temperature and catalytically dehydrogenated in an adiabatic reactor. The process is controlled by regulating the low pressure steam supplied to the vaporizer, the heat input to the process heater, and cooling water flow to the process coolers.
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