The feed plate and the vapor fraction at the bottom of the tower are 0
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Aspen separates propane at 0.3% (wt) and butane at 0.7%; the feed is at the bubble point, the tower pressure is 0.1 MPa, the pressure drop across the tower is also 0.1 MPa, there are 25 plates in total, and the feed flow rate is 18. An error occurred in the calculations – it indicated that the vapor fraction in the feed stream and at the bottom of the tower was 0. What’s going on?
Why isn’t anyone helping? . . .
The tower pressure is 0.1 MP, and the pressure drop across the tower is also 0.1 MP – isn’t there a contradiction here? Is there a 1kg pressure drop in the tower? It’s pretty big too.
3# llbear: What is the general empirical rule for tower pressure drop? Thank you for your advice. . .
The tower pressure of the poster is 0.1 MPa; how is it possible to use a distillation tower to separate propane and butane? ? ? ? ? ? It is recommended that the poster increase the operating pressure of the tower. Also, the pressure drop across the tower is too high; it is recommended to use 1 KPa per plate