Reaction Kinetics for the Removing of Naphthenic Acid by Microwave Irradiation from Diesel Oil

The removing of naphthenic acid by microwave irradiation is studied under, a certain time the microwave power with a constant radiant pressure. The experimental results show that the pressure is 0. 05Mpa, the radiant time on the constant pressure is 5min, the microwave power is 375W, the removal rate of naphthenic acid and recovery can reach 99. 07% and 98.62%, respectively. The quality of the treated diesel oil is good enough to meet the specification of GB252 - 2000. The temperature rising behavior of oil-solvent system is determined. The non-isothermal kinetic model of the removing of naphthenic acid from diesel oil by microwave irradiation is proposed according to the changes of naphthenic acid content.