Aspen simulation configuration issue regarding hydrochloric acid concentration
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I used AspenPlus to simulate hydrochloric acid formed by adding hydrochloric acid of different qualities to water, keeping 100 kg of H2O constant, and conducted a sensitivity analysis by adding 0–200 kg of HCl gas. The model uses a combination of mixing, constant temperature, and flashing; as a result, the maximum concentration of hydrochloric acid is around 43%, whereas in actual industrial processes the maximum concentration is 37%–38%. I’m not sure what the problem is
As the temperature drops, it is certainly possible to reach over 40%.