3 replies to this topic

Hi I am sizing a methanol slurry reactor. i am using Cu-Zn-Al catalyst. I am given the flow rate and the composition of the feed. the main reaction is CO + 2H2--> CH3OH. we also know that we need to produce 5000 ton/day of methanol.
I was able to calculate the reaction rate per weight of catalyst (mol/s.kg). i am trying to convert it to mol/s. m3 in order to solve for the volume of the reactor using the CSTR design equation
i tried to multiply rate by mass of the catalyst and divide it by the volume of the mixture but i did not know how to calculate the mass of catalyst or the volume of the mixture.

So i was wondering if anybody could help me solve this problem/

[jdh]

How did you get the reaction rate per weight of catalyst? Maybe you can provide more details.

I attached a word file that shows the equation i used to find the reaction rate.

kp is the equilibrium rate of the reaction
f is the fugacity

Attached Files

•  Doc1.doc   16.5KB   68 downloads

[harsh]

Hi Tivicoo
I think Your hydrogen is getting adsorbed on the surface of catalyst.
So you find how much hydrogen is adsorbed on per unit surface of the catalyst (adsorption calculations) then you will come to know how much catalyst will be required for 5000 tons/day of your production. Then using rate equation and conversion of CO (and also excess of hydrogen)
determine how much final catalyst you required.
after that you will need to calculate how much catalyst get deactivated in the process and then how much to regenerate (if required) or to provide after deactivation.
I think this is correct.

would you, please, help me in my reactor, the annular one (CS2 and Cl2 are the reactant) see below in same forum