How to choose the conditions in specifications
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This post was last edited by ancaiko001 on 2009-11-4 09:10. I created a model for absorption stabilization, but I keep encountering problems with setting the specifications for the stabilization tower; when the top of the tower is set based on C5 content and the bottom based on C4 content, the calculation does not converge! But by setting the flow rate at the top of the tower to C5 in lbmol/hr and the C4 content at the bottom of the tower, the results converged! Sir, may I ask what’s going on here? Are there any principles for choosing specifications?
It is still due to material balance; both require product specifications, and the system’s material balance cannot be achieved. So it does not converge
Setting the flow rate leads to convergence more easily than setting the component concentration.
When setting the content, it may not be achievable under the operating conditions of the tower. There’s no such problem once the recovery rate and flow rate are set～～