Inlet Compression & Acid Gas Treating
Inlet gas is handled by parallel slug catchers and four engine-driven Ariel reciprocating compressors rated 5,500 brake horsepower each, feeding an amine treating unit that removes carbon dioxide and hydrogen sulfide to pipeline specification, followed by triethylene glycol and molecular sieve dehydration. The residue gas specification calls for no more than 0.3 grains of hydrogen sulfide per 100 standard cubic feet and combined inerts below 3.0 mol%.
Cryogenic Recovery & Nitrogen Rejection
Treated gas enters a standard 300 MMSCFD recycle split-vapor cryogenic unit with three 2,000-horsepower electric refrigeration compressors, followed by residue compression using five engine-driven Ariel units. A dedicated reciprocating compressor supports a nitrogen removal unit that reduces nitrogen content, allowing the plant to operate in both ethane recovery and ethane rejection modes to meet varying product specifications.
Liquids Handling & Electrical Systems
Liquids handling includes a 10,000 barrel-per-day condensate stabilizer, natural gas liquids pumps, stabilizer overhead compression, six API 650 storage tanks, and full flare and disposal systems. Electrical service is distributed from a new main electrical building at 13.8 kilovolts down through 4.16-kilovolt and 480-volt systems, controlled through a DeltaV-based redundant process control system and an independent safety control system with fire-and-gas detection.
