Computer simulation accurately determines volatile sulfur compounds

We developed a computer simulation to determine the distribution of mercaptans in liquid petroleum products. We then applied this simulation to the NGL fractionation (NF) unit in the Bandar Imam Petrochemical Complex, Iran.The simulation used the Soave-Redlich-Kwong (SRK) equation of state (EOS) for all the vapor-liquid and thermodynamic calculations. Recently published experimental vapor-liquid equilibrium (VLE) data for mercaptans and light hydrocarbons helped determine optimum binary interaction coefficients for each system.The data regression option in Aspen Plus determined these optimum values. We simulated the entire NF plant as one complete unit to ascertain the optimized binary in...

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