Prediction of CO2 hydrate formation in supercritical CO2 long-distance pipeline network by simulation

Various impurities are dissolved in industrially captured CO 2 , which will change the physical properties and phase characteristics of CO 2 , and bring many technical difficulties in CO 2 pipeline transportation. In particular, the dissolved water may generate CO 2 hydrate, which threatens the safety operation of the pipeline. In order to investigate whether the CO 2 fluid with low water content will form hydrates in the pipeline, in this paper, the phase equilibrium curve of impurity-containing CO 2 hydrate calculated by vdW-P hydrate phase equilibrium model, and import it into the OLGA multiphase flow software. Predict and analyze the hydrate formation conditions and possible hazards during the stable operation of the actual supercritical CO 2 transportation pipeline network.