Representation of NH3-H2S-H2O, NH3-CO2-H2O, and NH3-SO2-H2O Vapor-Liquid Equilibria

A new method of calculation of vapor-liquid equilibria for ammonia/hydrogen sulfide/water and ammonia/carbon dioxide/water at 0/sup 0/-100/sup 0/C at the concentrations encountered in refinery sour water strippers and for ammonia/sulfur dioxide/water as found in gas cleaning systems was developed. The model was based on the Edwards et al. thermodynamic approach.