Methanol Synthesis under Supercritical Conditions: Calculations of Equilibrium Conversions by Using the Soave−Redlich−Kwong Equation of State

Abstract

The effects of the addition of several supercritical media on the equilibrium CO conversion in the methanol synthesis based on syngas under supercritical conditions were calculated by using the Soave−Redlich−Kwong equation of state. The results showed that the addition of proper solvents such as n-hexane and n-heptane could improve the CO conversion greatly under supercritical conditions. When using n-hexane, the favorite solvent mole fraction was 0.2−0.3, the optimum temperature was in the range of 473−483 K, and the pressure was above 8 MPa.