GPA MIDSTREAM PROJECT 111: COMPARISON OF GPA MIDSTREAM DATA TO SIMULATION SOFTWARE PREDICTIONS

摘要

Over the decades projects sponsored by GPA Midstream has generated thousands of data points that have helped characterize the equilibria and other characteristics of chemical systems that are important in the gas industry. The industry is also reliant on the use of process simulation software and the evaluation of how well the GPA data and the results of simulation software compare is important. GPA established Project 111 in order to evaluate GPA-generated data and compare it to simulation-generated data. A portion of the GPA data in specific areas of interest were selected for analysis: hydrocarbon vapor-liquid equilibrium (VLE), hydrocarbon and acid gas VLE/solubility/hydrate formation with water, solubility of hydrocarbons and acid gas in glycols and amines, methanol concentration in gas phase, sulfur compound distribution glycols and amines, and effect of inhibitors on hydrates. Flash calculations and other simple methods were used to generate predictive data to compare to the experimental data, using simulation software commonly used in the gas processing industry. The level of agreement between the experimental data and the simulation software results can be used by GPA member companies as a guide in the evaluation and interpretation of simulation results, and can also be used by the GPA to determine cases where additional experimental data may be necessary. The results of this project are currently under review and revision, and have not yet been released for publication. This paper focuses on summarizing the objectives, scope, and methods used in the study. Complete results will be published in the Project 111 Research Report that will follow.