the bubble effectiveness in liquid phase cylohexane non-catalytic oxidation process is discussed in this paper. then the bubble effectiveness and a new proposed kinetic model are used in the mathematical model of the industrial reactor for the cyclohexane non-catalytic oxidation process. furthermore, simulation and optimization based on this reactor model are carried out. the results of simulat...

The bubble effectiveness in liquid phase cylohexane non-catalytic oxidation process is discussed in this paper. Then the bubble effectiveness and a new proposed kinetic model are used in the mathematical model of the industrial reactor for the cyclohexane non-catalytic oxidation process. Furthermore, simulation and optimization based on this reactor model are carried out. The results of sim...

A wide-ranging review is presented on the most focal aspects of gas-liquid-solid reactors to discuss fresh headways towards understanding slurry bubble column reactors' behavior. In more detail, in this critical review, published works' findings concerning effects solid particles characteristics (size, concentration and density) volumetric mass transfer coefficient, liquid-side gas-liquid inter...

Three – Phase Sparged Reactors are widely used in Chemical, Bio-Chemical and Petrochemical Industrial processes. The advantages of these reactors include high mass and heat transfer rates,isothermal conditions and on-line catalyst addition and withdrawl. The high heat transfer rates of Three-Phase Sparged Reactors are particularly attractive for highly exothermic reactions where substantial red...

a crude biosurfactant mixture was produced in a 1.4 l tubular reactor by a mixed culture; afterthe thermal treatment of the whole culture an increase in emulsification activity and surface tension wasobserved, with a main effect on the first one. the emulsification index of the mixture obtained was of 60.4 %. the crude mixed biosurfactant was used to enhance hydrocarbon biodegradation of intemp...

In hydrocracking and other foaming reactors, the foam rises to the top because it has a higher gas fraction than the bubbly mixture from which it comes. The high gas hold-up in foams is undesirable in chemical reactors because it strongly decreases the liquid residence time and in hydrocracking reactors also promotes the formation of coke. To study foams we built a cold slit bubble reactor whic...

Bubble columns (with and without suspended solids) have been used widely as chemical reactors, bioreactors and equipment for waste water treatment. The key design parameters in bubble columns are: • gas holdup; • gas-liquid interfacial area; • volumetric liquid-phase mass transfer coefficient; • gas and liquid axial dispersion coefficients; Despite the large amount of studies devoted to hydrody...