Study On Enhancement Of Gas-Liquid Mass Transfer By Actiated Carbon Particles

The adsorptive particles can enhance the gas-liquid mass transfer process. The slurry system with adsorptive particles is widely used in petrol chemical and biochemical industries for their intensification effect on the processes. This work studies the enhancement effect of adsorptive particles on gas-liquid mass transfer.The enhancement behavior of fine particles on absorption of non-soluble gas was experimentally studied in a batch absorber. The fine particles used in the experiment are activated carbon and absorption systems are isobutene-water and hydrogen-water. The influence of rotate speed and the size of activated carbon particles on enhancement factor are experimentally studied by isobutene-water and hydrogen-water absorption system. A one-dimensional mass transfer model for absorption in slurry systems is developed and the enhancement factors were calculated by this model under experiment conditions, there is a good agreement between the experiments and predicted.Based on the results of experiments and model calculations, it was shown that the overall volumetric liquid-side mass transfer coefficient increases with the increase of the rotate speed. It was found that the enhancement factor increases with the decreasing of activated carbon particle size under the uniform mass concentration. The intensification effect of activated carbon on the mass transfer processes in isobutene-water is more distinct than in hydrogen-water.