Development of New On-Line Wash Oil Injection System for Centrifugal Compressor
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The process gas compressor is the most critical unit in ethylene plants and several types of contamination can often foul the compressor flow path and plant production is significantly lost. In order to prevent this fouling, as common practice, washing oil is injected through the nozzles installed on the suction piping and return bend of each stage. However, fouling material was reported during turnaround with few years operation even though wash oil injection was carried out at required intervals. Hence, OEM found the effective approach to develop the new concept improving on-line wash oil injection system. Optimized oil injection system were evaluated to avoid any risk by means of CFD and FEM analysis. This evaluation was verified through subsequent verification test. OEM finally manufactured and delivered new oil injection system and after a few years commercial operation, the effectiveness of newly developed system was confirmed by trend data.
Mathew, Ajay; Tokuyama, Shinichiro; Masaki, Shakuda; Subramani, Elumalai (2018). Development of New On-Line Wash Oil Injection System for Centrifugal Compressor. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station. Available electronically from