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[rrozz]

Hi,

I'm desining centrifugal absorber for separation of SO2, NO2 and dust.

For now, I'm facing a problem of effective diffusion coefficient in liquid mixture to estimate mass transfer coefficient from SO2 to mixture. There are to mass transfer fluxes in the process, one concerning SO2 absorbing in the mixture and the other concerning NO2. The liquid phase contains sodium hydroxide, so that the absorbtion is enhanced by chemical reaction. The reaction is treated as irreversible and infinitly fast therefore the concentration of SO2 doesnt exist in liquid phase. However the diffusivity of SO2, as well as NO2, in the mixture is required.

How to estimate the diffusivity of SO2 in the mixture?

Is diffusivity of SO2 neccessary to calculate mass transfer flux by liquid side?

How to estimate diffusivity of component in mixture of two electrolytes and phisically dissolved gas, in general?

Is there any other practical way to estimate the fluxes?

 

Thanks in advance,

Sorry for my english.