Intensification of phase transition on multiphase reactions

Chemical reactions, generally conducted under full gas or liquid phases, ar e problematic for volatile liquid reactants. For such reactants, the presen ce of phase transition can be favorable, since evaporation of the liquid co uld not only balance the reaction heat but improve the effectiveness factor of the porous catalyst. This principle was applied to engineering applicat ions. Experiment was carried out to investigate effects of catalyst activit ies flow directions, operation pressures, gas and liquid flow rates, and re actant concentrations on the reactor behavior. Quench operation with a cold -injection side stream was initiated to prevent an excessive temperature ri se, which was shown to be effective and flexible. With this novel optimizin g method, the reactor temperature could be kept around 270 degreesC under 1 .0 MPa, even with a benzene concentration of 35%. Research on phase transit ion of benzene hydrogenation proved successful and could be extended to rea ction systems with a similar range of process intensification.