Seeking help with distillation simulation problems
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When using Aspen to simulate the separation of alcohol and water, why does the theoretical number of plates become negative? I’m a beginner; please help me!
Here’s a reference: Methanol-water distillation simulation (strict algorithm) http://bbs.hcbbs.com/thread-436488-1-1.html
It shouldn’t! How can the number of theoretical plates calculated using the simplified method be negative? Post the scenario you simulated! Everyone, take a look! !
The number of plates is entered by the user; it isn’t calculated. How can it be negative, unless a negative value is entered intentionally?
It is likely caused by exceeding the azeotrope limit; the simplified method has poor handling capability for non-ideal systems. It is recommended that the original poster use Radfrac for azeotropic systems
It is recommended that the poster change the title to “Theoretical plate number is negative” for easier searching