carletto57
Chemical
- Oct 9, 2007
- 2
Hi all,
I am a newbie in Aspen..I have a problem simulating a reactive column.
In the simulator I used the radfrac..in this column I have the reaction of dehydration of metanol to DME.The rate of the reaction based on my catalyst is:
r(DME)=(k(s)*C(methanol)^2)/(C(methanol)+(K(w)/K(a))*C(water))
where:
k(s) is the superficial constant rate and has the following expression:
k(s)=k0*exp(-Ea/RT)
k0 and Ea are knowed
C(methanol) is the concentration of methanol
K(w)/K(a) are adsorption equilibrium constants (w for water,a for methanol)
K(w)/K(a) has the following expression:
K(w)/K(a)=exp(-25.75+11138/T)
I read that I have to modify file usrnt.f than compile it.
I don't know how I can do it.
Can please someone help me?
Can someone post the code of my subroutine or an example of a kinetic aspen subroutine?
Thank you all
Carlo from Italy (sorry for my bad english).
I am a newbie in Aspen..I have a problem simulating a reactive column.
In the simulator I used the radfrac..in this column I have the reaction of dehydration of metanol to DME.The rate of the reaction based on my catalyst is:
r(DME)=(k(s)*C(methanol)^2)/(C(methanol)+(K(w)/K(a))*C(water))
where:
k(s) is the superficial constant rate and has the following expression:
k(s)=k0*exp(-Ea/RT)
k0 and Ea are knowed
C(methanol) is the concentration of methanol
K(w)/K(a) are adsorption equilibrium constants (w for water,a for methanol)
K(w)/K(a) has the following expression:
K(w)/K(a)=exp(-25.75+11138/T)
I read that I have to modify file usrnt.f than compile it.
I don't know how I can do it.
Can please someone help me?
Can someone post the code of my subroutine or an example of a kinetic aspen subroutine?
Thank you all
Carlo from Italy (sorry for my bad english).
