Bypass control system
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United States of America Patent
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-
Jul 12, 1983
Grant Date -
N/A
app pub date -
Oct 13, 1981
filing date -
Oct 13, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a fluid catalytic cracking process in the case of a catalyst load dump the catalyst-laden gas is prevented from passing through the power recover expander. This is achieved by establishing a tangential, low pressure bypass flow path in the supply line to the expander which causes the catalyst to be bypassed. An optical sensor senses the catalyst load dump and causes the actuation of the valve necessary to establish the low pressure bypass flow path.
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