Catalytic cracking of carinata oil for hydrocarbon biofuel over Zn/Na-ZSM-5

Abstract

Abstract. . Catalytic cracking of carinata oil over Zn/Na-ZSM-5 catalyst in a fixed-bed reactor at 450 °C was carried out to produce hydrocarbon biofuel. The effect of Zn/Na-ZSM-5 catalyst on the yield and quality of the hydrocarbon biofuel was discussed. The yield of hydrocarbon biofuel, distillation residual, coke and gas was analyzed. Characterization of the hydrocarbon biofuel including density, moisture content, viscosity, higher heating value (HHV) and main components was carried out. In addition, the components of gas were analyzed. The yield of hydrocarbon biofuel and gas was 43.66% and 18.84%, respectively. After the carinata oil upgrading, some properties of the hydrocarbon biofuel including density, viscosity and HHV were improved. The hydrocarbon biofuel contained more than 90% hydrocarbons while it still contained a small amount of oxygenated compounds such as aldehyde, ether and ester. The produced distillation residual might be recycled for further catalytic cracking to increase the hydrocarbon biofuel yield. The produced gas including H 2 , CO and light hydrocarbons might be reused as syngas for ether power generation or production of value chemicals.