Brochure

Quench Tower Level Control Valve
Cracked gas leaving the furnace must be cooled immediately to
prevent formation of undesirable products in secondary reactions.
Depending upon the feedstock, water or oil is utilized as quenching
medium, with oil commonly used for heavier feedstocks.
Consistent quench tower operation delivers desirable feedstock
conversion.
Heavier hydrocarbons removed from the cracked gas leave the
bottom of the tower and are separated downstream. Entrained
carbon particles, more commonly found in heavier feedstocks,
may be present in this stream and can cause control valve trim
erosion. Control valves designed for erosive services should be
considered to ensure long life and consistent operation. Hardened
trim can provide resistance to erosive particles and extend trim
service life in these applications.
14 | Fisher
®
Olefin Production Solutions