China Petroleum Processing & Petrochemical Technology ›› 2021, Vol. 23 ›› Issue (3): 30-39.
• Scientific Research •
In order to explore the effect of particle position on the electrocatalytic reaction rate in three-dimensional electrocatalytic reactor,methylene blue was used as the simulated organic wastewater, and spherical graphite particles were used as the electron electrode, COMSOL Multiphysics software were used to simulate potential distribution in three dimensional electrocatalytic reactor. The logarithmic regression model was established with the particle size, potential and position as independent variables and the first-order kinetic constant as dependent variable. Combined with the model, the degradation efficiency of the particle electrodes at different positions in the reactor was predicted, the simulation results show that the reaction efficiency of particle electrode for pollutant degradation is uneven in the three-dimensional electro catalytic oxidation reactor, the increasement of the electric field intensity can change the distribution of electrocatalytic efficiency of particle electrode, the closer the particle electrode is to the anode position, the higher the ability of degradation of pollutants. The difference of electrocatalytic reaction rate between different positions in the particle is large. According to the degree of difference, it can be roughly divided into three regions, and the distribution of electrocatalytic reaction efficiency at different positions in the particle electrode is simulated.
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