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ASPEN PLUS V10 chemical reactions

2021-05-13View Original

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I used Aspen Plus V10 to carry out simulations for sodium-alkali desulfurization. According to the papers, at a pH of 7, the ratio of bisulfite to sulfite should be 1:1; however, my simulations showed a ratio of around 5:1, with very low concentrations of sulfite. I would like to ask the experts: is it because Aspen Plus does not have data on the equilibrium levels of these two ions at different pH values? How can I add it?

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