- #1
_Greg_
- 38
- 0
Right so basically, I'm doing a multicomponent distillation with some exotic chemicals.
My feed comes in at 13kPa and 60*C, so it's under vaccum. This will be a two phase mixture.
What I need is the vapour-liquid-equilibrium coefficients, 'K- values' at feed conditions.
I'm basing this on an ideal system to start with then I'll do it as non-ideal (fugacity coefficients etc)
So for now, I'm planning on using the Antoine Equation ln P = A - ( B /( T + C) ) (from coulson & richardson vol 6)
Now the K values can be calulated with Raoults law Ki = Pi(sat)/Pt
My question is, will the pressure value I get from the Antoine equation be the saturated vapour pressure of component i? (Pi(sat))
Sorry this probably sounds terrible, but it's been a while
My feed comes in at 13kPa and 60*C, so it's under vaccum. This will be a two phase mixture.
What I need is the vapour-liquid-equilibrium coefficients, 'K- values' at feed conditions.
I'm basing this on an ideal system to start with then I'll do it as non-ideal (fugacity coefficients etc)
So for now, I'm planning on using the Antoine Equation ln P = A - ( B /( T + C) ) (from coulson & richardson vol 6)
Now the K values can be calulated with Raoults law Ki = Pi(sat)/Pt
My question is, will the pressure value I get from the Antoine equation be the saturated vapour pressure of component i? (Pi(sat))
Sorry this probably sounds terrible, but it's been a while