modeling and optimization of the eyring equation by pseudo ideal solution model (pism) to predict the “methyl di-ethanol amine-bmim pf6” solvent viscosity in the co2 capturing pilot plant

The purpose of this study was to propose a new simulation model for calculation of the actual viscosity of the “methyl di-ethanol amine (mdea)-[bmim pf6] ionic liquid solvent” in the co2 capturing pilot plant. to do so, a combination of the pseudo ideal solution model and eyring’s mixture viscosity equation was implemented in the matlab software. we determined the viscosities of the mdea-ionic liquid (il) blends at different concentrations and various temperatures in the co2 capturing pilot plant. the results were comparable to those obtained from the pism-eyring model, eyring-wilson method, s. cheng & meisen equation, aspen plus and promax with enrtl model that presented the actual viscosity values of the liquid solutions. the calculated solvent viscosity values with pism-eyring model at different temperature profiles were achieved using an average absolute deviation (aad %) of about 2.35% and 2.70% in absorber and desorber for solvent (mdea=40 wt.% & il=37.2 wt.%) and 2.51% and 2.67% in absorber and desorber for solvent (mdea=45 wt.% & il=39.3 wt.%), respectively. the consideration of a suitable model for the determination of viscosity has a significant role in energy consumption in the co2 capturing pilot plant. an average absolute deviation of about 0.71% for solvent (mdea=40 wt.% & il=37.2 wt.%) and within 0.68% for solvent (mdea=45 wt.% & il=39.3 wt.%) at high co2 feed. the results obtained from the pism-eyring simulation model using the experimental data revealed a high degree of accuracy.