Experimental Vapour Pressure Data For Mtbe And Methyl Acetate Are Presented In Table 2 The Three Adjustable Parameters 1 (126.02 KiB) Viewed 18 times
Experimental vapour pressure data for MTBE and methyl acetate are presented in Table 2. The three adjustable parameters (K1, K2 and K3) can be determined from the regression of experimental vapour pressure data. Hence at first, use the experimental vapour pressure data to determine these parameters by regression. Use Aspen or Chemcad to generate the P-x-y plot for this data using the UNIFAC model and compare this to the experimental and modeled data. Table 2: Experimental vapour pressure for MTBE and methyl acetate. TI °C 30 40 50 60 70 80 90 100 110 120 MTBE P / kPa 42.3 61.0 86.6 119.9 162.2 215.8 282.7 363.8 462.1 579.8 Methyl Acetate PI kPa 35.9 54.3 79.1 113.2 157.0 213.6 285.5 373.3 481.3 610.5
Instructions The experimental VLE data of Lee et al. (1997) is reported in Table 1 below. Determine the binary interaction fitting parameter for this data set using the phi-phi method. Use the Peng- Robinson Equation of State (PREOS) (1976) with the van der Waals mixing rules. However, in the PREOS replace the a function with the following a function of Mathias and Copeman (1983) reduced to 3 adjustable parameters: a{T),6)=[1+631– VIT.), )+ x>(1–NT), ) +*,(1–MT ))} ] {,},MT -. = K (1) To is the critical temperature, w is the acentric factor, T, is the reduced temperature, K1, K2 and K3 are the adjustable parameters that are unique to each component.
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