For the purpose of analyzing the effects of recycle on process economics, consider a variation from the process flowchart that takes the synthesis gas leaving the MUG compressor directly to the MSR.

Suppose that the synthesis gas fed to the MSR is 5 mole% methane, 25% CO, 5% CO₂, and the remainder hydrogen, and that the product stream leaving the MSR is at 250°C and 7.5 MPa. Also, for the time being, ignore all reactions in the MSR except for that given by Equation 13.3, which is governed by the equilibrium relationship:

Where

T is temperature in K, P is pressure in atm, and K_ϕ13.3 is a term that accounts for deviations from ideal gas behavior. Assume K_ϕ13.3 = 1.0 and determine the composition of the product stream from the MSR and the conversions (%) of CO and H₂. Based on these results, comment on the rationale for the recycle loop discussed in the process description.

Transcribed Image Text:

YCH;OH Kø133 %3D 13.3 YcoV, P2 Усо Ун