Errors in Measurement of Interfacial Area and Mass Transfer Coefficient in Liquid in Apparatus with Mobile Packing

The paper deals with an analysis of errors of measurement of interfacial area and mass transfer coefficient in liquid in an absorber with mobile packing. The system of CO2-NaOH has been used for the testing with recirculation of the adsorption solution. The error of measurement of the absorption solution temperature, CO2 concentration in the gas, the composition of absorption solution, the mass transfer coefficient in gas, and the volume of absorption solution at the beginning and at the end of the measurement have been investigated with regard to their effects upon the resulting values of specific interfacial area and mass transfer coefficient in liquid. From the simulation calculations if follows that the interfacial areas most strongly affected by the error of measurement of CO2 concentration in gas, whereas the mass transfer coefficient in liquid is considerably affected by inaccuracies in measuring the volume of absorption solution at the beginning and at the end of experiment.