Azeotropic distillation dehydration with isopropanol
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Before the logistics B1-recyc connection to the mixer, it is shown that a certain amount of benzene flows out from the bottom of the azeotropic tower. But by integrating the mixer into the process, the benzene component in the entire tower disappears
I haven’t encountered it yet; it seems too fantastical. If it is process development, why not use extractive distillation instead of heterogeneous azeotropic distillation? Extractive distillation is usually more promising.
Well, I’ve learned something. It’s just that the graduation project requires the use of azeotropic distillation. When simulated with Aspen, the entire process can meet the requirements and converge without an azeotrope. I don’t know what the reason is.
This system exhibits azeotropy; if the product meets the required standards without the use of a stripping agent, then there is a problem with the thermodynamic approach, as it is unable to predict the azeotrope temperature； Or there is a problem with the binary interaction parameter in the thermodynamic approach. Solution strategy: Use the selected thermodynamic method to predict the azeotrope point of IPA/W to see if it is possible to make an accurate prediction. If it cannot be predicted, use heat transfer mechanics methods, or re-estimate the binary interaction parameters using VLE experimental data.
Thank you, the issue has been resolved. It was resolved by changing the calculation method for the shear flow