Effect of the Nonuniformity of the Inlet Liquid Distribution on the Trickle-Bed Reactor Output in an Exothermic Reaction Accompanied by Evaporation

摘要

The effect of the inlet liquid distribution on the operation of a trickle-bed reactor is experimentally investigated, and the observed phenomena are analyzed using a one-dimensional mathematical model with non-equilibrium approaches to describing phase transitions. The modeling shows that, if the fraction of the wetted surface at the reactor inlet is below unity, then, along a sufficiently long bed, there is always a stationary front of complete evaporation and complete conversion. The main conclusion within the framework of the considered one-dimensional model with separate evaporation (on completely wetted granules) and gas-phase hydrogena-tion (on dry granules) is that safe operation (the absence of a thermal explosion) can be ensured by complete suppression of the reaction in the gas phase.