| The intensification of chemical engineering process is one of the important developments that go beyond traditional chemical engineering. Frequently the absorption rate of sparingly soluble gas reactant to liquid phase limits the reaction rate. While the adsorption rate can be significantly enhanced by the presence of fine particles.The experiments of isobutene hydration reaction and isobutene solubility in mixed solvents of water and tertiary butyl alcohol were carried out in a stirred autoclave reactor. The volume of reactor is 1 dm3. The size of catalyst particles ranges from 1.11μm to 300μm. The reaction rates catalyzed by various catalyst particle size, various catalyst solid contents, various beginning concentration of tertiary butyl, various stirred speeds were studied at 350Kand 0.74MPa. Isobutene solubility in water-alcohol mixtures has been correlated for alcohol concentration up to 2.0 kmol/m3 and temperature range from 335.15K to 358.15K at pressure of 0.74MPa.In order to study the effect of catalyst particles on gas-liquid mass transfer in reaction system, the solid contents were changed. The gas-liquid mass transfer coefficients in the presence of various particle sizes were obtained by using correlated equation. The results agreed with well the experimental data. The analysis of the results indicate that the volumetric mass transfer coefficient increase with decreasing size of catalyst particles. The gas-liquid mass transfer coefficient increases with decreasing size of catalyst particles and the effect at the smaller size of particle range is more notable than the larger size of particles.The controlling step of isobutene hydration reaction with different catalyst particle sizes were discussed in this paper. The results indicate that as to small size particles(1.1μm |
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