Kinetic Study of the Reformation of Military Logistic Fuel (JP-8) in Supercritical Water

摘要

A global first-order kinetic study was conducted for the supercritical water gasification of jetfuel. Experiments were performed non-catalytically in a continuous mode of operation usingsupercritical water in a specially designed 100 mL Haynes 282 tubular reactor at temperatures varyingfrom 770 to 1050 K and at a pressure of 24.26 ± 0.05 MPa. The kinetics of this process were modeled asthree reactions in series: pyrolysis of the jet fuel, reformation of the smaller pyrolysis fractions, and thesubsequent forward water gas shift of the resulting carbon monoxide. Global first order kinetics wereassumed throughout. Using a first-order Arrhenius plot, the activation energy and frequency factor wasdetermined for each of the three reactions. In this paper, the chemical kinetics of this novel processwere elucidated based on the experimental data. The percentage of carbon converted to gas was thehighest, 69%, at the highest temperature of 1050K, as were the methane, hydrogen, carbon monoxideand carbon dioxide yields.