Numerical Analysis and Optimization Research on Backflow Effect of Nitrogen Compressor Piping System Based on Vibration Data

Abstract

Oil and gas energy production supports for the production process is the nitrogen compression system. The condition of the compressor has high vibration with the following maximum data. Maximum overall the first compressor is 9,813 mm / s RMS, the second compressor is 7,439 mm / s RMS, the third compressor is 7,430 mm / s RMS, the fourth compressor is 13.47 mm / s RMS, and the fifth compressor is 13,220 mm / s RMS. The first piping system shows that the standby compressor's flow has a higher pressure reaching 10.72 - 11.82 Pa. The second piping system with two compressors in operation shows that the pipeline flows in the opposite direction and caused high pressure. The pressure after the second run compressor to discharge direction experiences a drastic drop in pressure because there is a confluence of two flows. Flow turbulence occurs, resulting in a higher speed. The highest pressure in the pipeline reaches 44.79 Pa, mostly at the fifth and sixth compressors. The recommendation regarding backflow and condensation flow is to add a valve at each compressor outlet, prevents direct pressure to the compressor or the condensed fluid from the gas flowing and entering the compressor.