Oklahoma-based Mustang Fuel Corp.'s midstream subsidiary, Mustang Gas Products LLC (MGP), has implemented proprietary technology from Honeywell UOP LLC to improve ethane and propane recovery at the Dover-Hennessey cryogenic gas processing plant in central Oklahoma’s Kingfisher County.
Installation of the UOP-owned Ortloff gas subcooled process (GSP) plus Retro-Flex process technology has enabled the Dover-Hennessey plant to exceed design recovery levels, with use of Ortloff GSP allowing the plant to increase ethane production and the Retro-Flex technology providing greater operating flexibility in both ethane-recovery and rejection modes, UOP said.
The Dover-Hennessey plant currently is recovering 95% of ethane and 100% of propane in ethane-recovery mode, as well as rejecting more than 95% of ethane while recovering more than 99% propane in ethane-rejection mode, according to UOP.
As part of the Retro-Flex technology retrofit, the Dover-Hennessy processing site was converted from a refrigerated Joule-Thomson plant to a GSP plant, the service provider confirmed.
The plant is the first global application of UOP’s Retro-Flex process, a retrofit technology designed to improve propane recovery in both ethane-recovery and rejection modes without requiring additional compression for existing Ortloff GSP cryogenic plants.
Further details of the project were not disclosed.
According to the latest data from the US Energy Information Administration, the Dover-Hennessey gas plant has a processing capacity of 80 MMcfd.
The conversion and upgrading project at Dover-Hennessey follows MGP’s previous announcement that it was undertaking a $65-million capital program aimed at increasing the capacity, efficiency, and reach of its midstream assets (OGJ Online, Nov. 21, 2017).
The investment program included plans to increase system-wide gathering capability as well as expand plant capacity to more than 225 MMcfd, with scheduled improvements to involve upgrading horsepower, replacing older equipment, installing new pipe, and adopting new technologies for process, efficiency and control enhancements.