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[Franwis]

Hi everyone,

 

I am currently writing my end-of-degree project, whose topic is sulfuric acid production (double contact process). One of the tasks is the design of the intermediate and final absorbers, where the following reaction takes place:

 

SO3 (dis) + H2O (l) -> H2SO4 (l)

 

In the absorber, a gas current with SO3 contacts a liquid solution with sulfuric acid (l) 98,5 % (1,5 % H2O (l)) to produce more sulfuric acid (l), The liquid is dispersed in a packed bed. 

 

For the design of the reactor, I need information of the mass transfer coefficients (gas to interface and interface to liquid) and of the chemical reaction. Regarding the latter lies my problem: I can't find any information about the kinetics / reaction rate.

It is known that the chemical reaction proceeds very fast, so it's mass transfer controled. Nevertheless, for my project I need to calculate the Hatta number in order to check this.

Do you know if this information can be found in the literature? Where exactly? I tried Science Direct, pubs.acs but without success.

If the approach needed to solve the design is different, I would like to know more about it.

Thank you in advance!