ARC strategies benefit dual-train cryo, frac plant

Implementation of advanced regulatory control (ARC) proved effective for enhancing cryogenic plant and fractionation plant control at the Aux Sable Liquid Products Inc. dual-train cryogenic NGL recovery and separation plant near Channahon, Ill.The project focused on advanced control strategies for two identical parallel cryogenic trains for the facility and the single-train NGL fractionation unit, which processes the recovered NGLs from the cryogenic units.Each cryogenic train incorporates Ortloff’s Recycle Split Vapor (RSV) and Gas Sub-cooled Process (GSP) processes. For the RSV process, an additional reflux stream is introduced into the demethanizer. These processes allow operatin...

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