Study Of The Kitchen Waste Oil Substrates To Synthesis The Bio-aviation Fuel And The Preparation For The Catalyst

The bio-aviation fuel refers to a series of renewable fuel derived from biomass that meets the relevant standards for aviation engines.The application of bio-aviation fuel in the industry not only requires little or no modification to the jet engine but also could benefit the earth by reducing carbon dioxide emissions and improving air quality.Nowadays,biomass such as algae oil,palm oil,straws and kitchen waste oil industry are often used as the raw materials in the manufacturing of the bio-aviation fuel.The kitchen waste oil is a renewable resource with a great potential,and through the study and development of its application of high additional value,not only the waste of resources can be avoided,but also could prevent it from returning to the dining Table,which in turn help reduce the food safety issues.And to industrialize the production of bio-aviation fuel from catering wastes,establishing highly efficient and high-quality manufacturing process while minimizing the energy consumption and the costs,are crucial.In this thesis,the catalysts used in the production of bio-aviation fuel with fat acid methyl ester from kitchen waste oil as the raw material is studied;the preparation and synthesis process of the catalysts are optimized to produce the bio-aviation fuel products that meet the standards of the aviation fuels.It is found that the endogenous hydrogen supply in the reaction between methanol and water,is a feasible process with self hydrogen supply,but needing optimization.Moreover,the hydrodeoxygenation function of Ni and Mo with ?-Al2O3 as the carrier is studied;the optimal loading ratio of Ni and Mo supported on ?-Al2O3 in the small reactor was determined;with catalyst being 5%Ni-20%Mo/?-Al2O3,a maximum rate for the hydrodeoxygenation of 33.60%and a ratio of aviation fuel of 8.03%can be achieved.A commercialized ZSM-5 catalyst supporting metal Ni and Mo was prepared,it has the function of both hydroeoxygenation and fracture isomerization,which realize the one-step conversion of fat acid methyl ester to bio-aviation fuel.The hydrodeoxygenation rate can be increased to 57.24%under optimum conditions,with the total content of the aviation fuel components reaching 22.64%,among which are the benzene series,reaching 21.02%.The preparation for the ZSM-5 molecular sieve is optimized.When the dosage of the template is controlled at 2.5:1(molTPABr:molaluminum oxide)and the crystallization time is set to 24 h,the hydrodeoxygenation reaction rate can reach 65.93%,with the total content of the aviation fuel components reaching 35.41%,among which the benzene series reaching 35.01%.Comparing to the commercialized ZSM-5 as the carrier catalyst,the content of benzene series can be increased by 13.99%and as a result the energy density of bio-aviation fuel is greatly improved.