Devon – Leland Sour Gas Dehydration Facility

Gas Liquids Engineering Ltd. (GLE) completed an engineering review of a 60 MMSCF/d very sour (31% H2S) dehydration facility, that was built in 1999. The facility was experiencing numerous leaking valves. The following was observed by GLE:

  • The facility was found to be designed with a strong adherence to safety
  • Design pressures are consistently high with few spec breaks
  • Inlet ESD valves are provided, as are proper control valves per industry standard
  • The equipment and piping were all designed in accordance with generally accepted engineering practices and sufficient design margins are present to allow for the very sour (>30% H2S) production gas.

GLE provided the following recommendations:

  • Evaluate using a condensate solvent in lieu of DADS to prevent elastomer attack and valve seal failures
  • Operate and cycle all plant valves periodically to ensure operation
  • Replace seized valves as necessary with gate or globe valves
  • Mechanically clean, prime and paint exterior piping
  • Heat loop piping within the regeneration gas piping to assist in sulphur melting
  • Monitor corrosion of salt bath heater outlet piping, and review salt bath heater coil design criteria
  • Replace heater and coil for severe corrosion protection
  • Add heat tracing to select equipment around the facility
  • Review synchronization of generators
  • Insure inlet filters are properly installed in the inlet filter separator

On this website we use first or third-party tools that store small files (cookie) on your device. Our cookies are used to generate navigation usage reports. You have the right to choose whether or not to enable these cookies. By enabling these cookies, you help us to offer you a better experience. Cookie policy