ASPEN’s simulations regarding selectivity
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The problem is described as follows: 1. In general, during MDEA-based selective desulfurization, the amount of CO2 removed should be low. However, the calculated composition of the gas after desulfurization shows that this selectivity is not evident, meaning that CO2 is also removed. 2. If chemical reactions involving CO2 are not taken into account, then the calculated amount of CO2 in the gas after removal is virtually zero, whereas in reality a small amount of CO2 should be removed. Therefore, it is also inappropriate to ignore the chemical reactions of CO2. Question: How should it be set up so that ASPEN can produce such selective calculation results? I’d like to ask the experts~ Thank you~~
Did you design the operating procedure yourself, or did you use someone else’s procedure for simulation? I’ve encountered similar situations as well, but it wasn’t related to removing SO2; it was something else. In the end, it turned out that the operating conditions had been entered incorrectly...