Problems in HYSYS simulation of hydrogen sulfide stripping towers
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Use HYSYS to simulate the hydrogen sulfide stripping tower; select an absorption tower with condensing reflux. The pressure at the top of the tower is 0.75 MPa, and that at the bottom is 0.83 MPa. During operation, the temperature at the top of the tower is around 140°C. Should we conduct a two-phase analysis? The dilute two-phase solver fails to converge – what is the best way to deal with this issue? The version is V9
The absorption tower model with condensation reflux has 2 degrees of freedom. If full reflux is used, it is recommended to arrange the condensation and reflux outside the tower; this results in 1 degree of freedom, allowing for good convergence. Also, pay attention to the selection of the material property package.
Thank you for the reply. Through adjustments, convergence has been achieved. The key is to prevent the formation of an oil-water two-phase mixture; otherwise, convergence is difficult to achieve