Research Of Producing Second Generation Biofuels Via FCC Co-Processing And Hydroprocessing

With the rapid development of industry, the demand for fuel keep increasing in businesses. At the same time, China's reserves of oil is constantly diminishing due to mining, and we had to rely on imported oil to solve the energy shortage problem. Unstable international oil prices directly interfere with China's economic development. Vigorously develop new energy technologies is a solution to the human energy crisis, and current research of new energy has reached a certain height and depth and has attracted more and more attention.The use of processing and hydrodeoxygenation to prepare deoxy second generation biofuels in recent years.In this paper, CGP-1HN catalyst and Endurance catalyst were used, in combination with catalytic cracking preparing biofuels by waste cooking oil. We used laser particle size analyzer, SEM, N2-adsorption/desorption, XRD, Py-IR characterization and micro-reactor activity, loss on ignition, chemical composition analysis, etc to test Endurance catalyst and catalyst CGP-1HN,in according to explore the structure of the two catalysts and impact on the nature of the reaction products. The results showed that Endurance catalyst has a higher yield on gasoline and diesel, and CGP-1HN catalyst has a higher yield simultaneously on gasoline and LPG, but the preparation diesel slightly lower yield, and lower yield of heavy oil. CGP-1HN Catalyst B acid sites mainly in the main, have produced beneficial light components. The Endurance also contains L acid sites, more conducive to the production of diesel fuel.We also discusses the impact of blending different proportions of Hainan refining vacuum gas oil of products at different temperatures. The results show that:When used Endurance, reaction temperature on the catalytic cracking biofuel more obvious, at480?, the light oil, the total liquid yield, conversion rates are highest, and for heavy oil, coke yield declined slightly. When used CGP-1HN as catalyst, the reaction temperature had no significant effect on the catalytic cracking biofuel. Hainan Refinery minus three lines oil. and added biodiesel does not have much impact on the Hainan refinery FCC minus three line oil product distribution, so biodiesel is a good catalytic cracking feedstock.We take hydrothermal synthesis method for the Si/Al ratio of10,20,40of Al-MCM-41, Si/Ti ratio of Ti-MCM-41and Si/Zr ratio of50,100,200Zr-MCM-41. Using XRD, FT-IR, N2-adsorption/desorption, SEM, TEM, Py-IR for characterization, and preparing a hexagonal structure with different specific surface area, highly ordered, there is a certain acidity (mainly L acid sites) mesoporous molecular sieve.In the reaction, we take use of ammonium sulfide and ammonium paramolybdate synthetic method as a safer way for the synthesis of a reactive intermediate four ammonium thiosulfate, and it is characterized by XRD, FT-IR, SEM, TG-DTG test. The results show that the product is synthesized ammonium tetrathiomolybdate relatively pure, has highly crystalline. The decomposition of the product is an active MoS2ingredient at500?, N2atmosphere. By incipient wetness impregnation method, the ammonium tetrathiomolybdate impregnated onto different catalyst, then calcining it under N2atmosphere. The decomposition was used to obtain MoS2/Al-MCM-41, MoS2/T1-MCM-41, MoS2/Zr-MCM-41catalyst for hydrogenation, and its XRD, XPS characterization was performed. The results show that the catalyst after impregnation keep the original one-dimensional hexagonal pore structure, but with the entry of the active ingredient, the size of the hole decreased. Impregnated on the support of the active component having hydrogenation activity of M0S2.We took jatropha oil as raw material, high-pressure reactor as the reaction apparatus,350?,5Mpa under hydrogenation conditions evaluated the effect of different catalysts. The results show that the product is mainly C8?20saturated hydrocarbons, in hydrodeoxygenated also accompanied by decarboxylation reaction, deoxygenation effect of the product is very good, the higher the yield of which Ti-doped liquid catalyst.