How to simulate the refining tower
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There is an isopropyl alcohol purification tower today. The feed component is 99% isopropyl alcohol and the other 1% is an unknown substance with a high boiling point. How to simulate this tower?
First consider whether an azeotrope occurs,
Reply 2# sjkg2 This high-boiling substance is not azeotropic with isopropyl alcohol. According to experience, the boiling point difference is about 20 degrees.
Reply 3# songtonghui Then I guess it’s a substance. Substances with boiling points that differ by about 20 degrees Celsius can be simulated.
Reply 4# sjkg2 Is it possible to add virtual component simulation? If it can be added, how can it be added?
Cannot add virtual components. You can roughly estimate a substance to simulate based on your situation.
Reply 6# sjkg2 Thank you for your answer! ! !
It is best to estimate a component based on the situation, so that you can save time on searching for data!
Reply 6# sjkg2 Why can't I add virtual components?
Reply 9# hyowinner Virtual components are mixtures that characterize petroleum and other distillation ranges. For example: There is a petroleum fraction with a distillation range of 50 to 200°C. If it must be converted into virtual components during simulation, the mixture has a distillation range of 50-56°C (or other temperature ranges) and the mixture with similar properties is represented as PC50 (or other name), and then the vapor pressure, critical pressure, density, molecular weight and other related physical properties of the mixed substance in the 50-56°C distillation range are calculated according to the formula. Then assign it to PC50. pc50 is the virtual component. He comes to characterize a mixture.