Modeling and Optimization of Corrosion Penetration Rate in Crude Oil Pipeline Using Response Surface Methodology Based on Aspen HYSYS Simulation Software
This study aims to investigate the influence of a number of related parameters namely temperature, pressure, flow rate and pH on the corrosion penetration rate (CPR) of crude oil transportation process by pipelines. It intends the mathematical model of these parameters as independent variables with corrosion penetration rate as a dependent variable. The model was used to establish the best values of these parameters using the response surface methodology. Aspen HYSYS software was utilized to simulate the experiments and to calculate the corrosion penetration rate for each experiment. The experiments designed based on the central composite experimental design (CCD) using Minitab 17 software. The mean absolute percentage error was used to determine the conformance of the developed mathematical model. Its value was 0.02%, this indicates that the developed mathematical model was consistent. The Nash Sutcliffe efficiency (NSE) was also calculated. Its value was 0.999 which confirms the high-efficiency of the model. The optimal corrosion penetration rate conditions were determined, temperature (100°F), pressure (360 psig), flow rate (150,000 bbl/day), and pH (5.65). Accordingly, the minimum corrosion penetration rate is (3.98 mm/year).
