MASS BALANCES FOR THREE-PHASE REACTORS

The mass transfer of component i from the gas bulk to the liquid bulk is described by the flux, Ny, according to Equation 7.69 (Chapter 7)  

In physical absorption, the fluxes through the gas and liquid films are equal  

FIGURE 6.15 Schematic description of the concentration profiles in a three-phase reactor. 

The flux from the liquid bulk to the liquid film around the catalyst particle at steady state is equal to the generation rate of the component on the catalyst surface. The steady-state mass balance for a catalyst particle thus becomes 

The flux, N[-, through the liquid film surrounding the catalyst particle is described by the difference in the concentrations and the liquid-film coefficient fcp- 

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