Visbreaker letdown valve
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United States of America Patent
Stats
-
May 17, 1983
Grant Date -
N/A
app pub date -
Oct 19, 1981
filing date -
Oct 19, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A visbreaker, letdown valve is featured which maintains a smooth flow of furnace effluent. Liquid passing through the throat of the valve is throttled, and a portion is caused to flash to vapor. The valve is designed to allow for subsonic flow of the vapor under all process conditions. A quenching fluid is also added to the liquid passing through the throat in order to cool the liquid.
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