It uses predictive control models derived from plant dynamics andrigorous simulation results. MVC® is GE CII'spatented model predictive multivariable controller/optimizer with nonlinearcapability. Improved quality control of NGL and condensate productsĪfter considering various options, GE Continental Controls (GE CCI)'s MVC®was selected to provide the APC solutions at GP&PD. The objectives ofthe APC project were:Increased NGL and condensate recovery while meeting as demand for consumersand reinjection requirements In let gas conditions are widely varying andstrong interactions between different units make control of the plant operatingconditions difficult.ĪTHEER decided that Advanced Process Control (APC) solutions at its Habshangas processing facilities would benefit its operation and allow greater naturalgas liquids (NGL) recoveries and reduced utility consumption. The feed gas to the plant comes from three different onshore gas sourceswith different gas compositions. Besides, each trainof Thammama - "C" and "F" has standalone condensate stabilizer unit (Unit - 20,21 and 24), whereas two trains of Thammama ’ "B/C" have common stabilizer unit(Unit - 22). Eachprocessing train consists of gas sweetening unit using MDEA solvent, Dehydration unit using molecular sieve and NGL Recovery unit havingturbo-expander- recompressor, demethanizer and debutanizer.
Thammama - "B" gas isassociated gas, whereas Thammama - "C" and "F" are nonassociated gas. It consists of two identical trains each of270 million standard cubic feet per day (mmscfd) for processing Thammama - "C"gas 30/40 and 31/41 respectively), two trains of 350 mmscfd each for mixture ofThammama - "B" and "C" gas (Unit 32/42 and 33/43 respectively) and one train of610 mmscfd for Thammama - "F" gas (Unit - 34/44).
Introduction ATHEER's gas processing plant at Habshan, Abu Dhabi is one of the world'slargest gas processing facilities.