1 reply to this topic

[Bell]

Hi everyone,

There are many designs available for the Hydrogen Iodide decomposition (HI -> H2 + I2) in SI thermochemical cycle. However, Im very confused after a few weeks of searching and analysing. As the HI coming in as azeotropic phase, it is quite tough to initiate the decomposition.
Im trying to design the reaction based on Reactive distillation column. However, how can we work our the equilibrium calculation as we are only given Gibbs energy changes and enthalpy changes?

[Bell]

'Bell', on 04 Mar 2011 - 5:54 PM, said:

Hi everyone,

There are many designs available for the Hydrogen Iodide decomposition (HI -> H2 + I2) in SI thermochemical cycle. However, Im very confused after a few weeks of searching and analysing. As the HI coming in as azeotropic phase, it is quite tough to initiate the decomposition.
Im trying to design the reaction based on Reactive distillation column. However, how can we work our the equilibrium calculation as we are only given Gibbs energy changes and enthalpy changes?

I found the equilibrium conversion around 22% from the gibbs calculation and hope thats right. I have got the reactor volume around 1.64m3. So far, i need to design a catalytic packed bed reactor for the HI decomposition in gas phase. How can i keep the temperature in the bed as 450 degree celcius?