[Telma]

Hello

I have a problem to resolve. I have a basic process to production of benzene from toluene by the following reaction :
C7H8 + H2 -> C6H6 + CH4

In that process I know that the reaction occurs at 300ºC at a reactor with a % of excess of a 20% and a % ate conversion at 90%.

The stream resulted of the reactor it was cooled with the objective of separate the benzene by condensation.

I need to know which the work temperature and pressure of condenser.


I know that benzene and toluene are in equilibrium in condenser. Than I have a steam and liquid streams in equilibrium. This way, considering at a ideal case, and using the laws of Raoult and Dalton, I thought
that:

X(C6H6).Pv(C6H6,T)=Y(C6H6).P(total)
X(C7H8).Pv(C7H8,T)=Y(C7H8).P(total)


P - Work pressure of condenser
T - Work temperature of condenser
Pv - Pressure steam of component in function of T
X - molar fraction of liquid component in equilibrium with steam
Y - molar fraction of steam component in equilibrium with liquid

And I just know these fractions, nothing more.

The problem is that I can't solve it this way. I think that I need more information, perhaps a Pressure steam? 

PS: Forgive me my bad english. 

[Rabn]

It isn't easy to understand what you wrote but I think I get the gist of it. I would work from a thermodynamics.  Use Enthalpy and Gibbs free energy.  It should give you the info you need, just remember to use dG = dG(standard) + RT ln Q