How to implement Aspen’s functions more perfectly

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Let me first talk about my doubts regarding using Aspen. First, there is a process (usually materials or examples from classmates). Generally, a model is established based on the input and control conditions provided in the example. Then the result is calculated. If the result is available, it’s done. I always feel that this doesn’t really make use of Aspen. For example, there is a question regarding the reliability of the results: even though they indicate correctness, an incorrect choice of thermodynamic model can lead to results that differ significantly from reality, rendering them unsuitable for guidance. Second, the thermodynamic method was chosen correctly. However, there is a problem with the convergence strategy, which prevents the model from converging. When this happens, first, switch to another convergence method. If that still doesn’t work, it is common to make some changes to the operating variables of the module to see if that can lead to a slight improvement in the results. Third, it has converged. So optimization is needed. I don’t know how to proceed from here. I think there should be an optimization goal, and then appropriate variables are selected based on the principles of chemical engineering. Calculating...... Looking forward to expert guidance......! ! ! !