Flow-Through Supercritical Installation for Producing Biodiesel Fuel
A flow-through installation was created and manufactured for the transesterification of triglycerides of fatty acids and production of biodiesel fuel under supercritical fluid conditions. Transesterification of rapeseed oil with ethanol was carried out according to two parameters: temperature and the ratio of alcohol/oil mixture at the constant pressure of 19 MPa. The kinetics of the yield of fatty acids ethyl esters (FAEE) was determined in the temperature range of 320-380 °C at the alcohol/oil molar ratio of 6:1-20:1. The content of the formed FAEE was determined by the method of correlation of the resulting biodiesel fuel by its kinematic viscosity. The maximum FAEE yield (about 90%) was obtained within 30 min at the ethanol/oil molar ratio of 12:1 and a temperature of 380 °C. When studying of transesterification of triglycerides, a kinetic model of an isothermal flow reactor was used. The reaction order implemented in the flow reactor has been determined. The first order of the reaction was confirmed by data on the conversion of FAEE during the reaction at different temperatures and the molar ratios of the initial reagents (ethanol/oil). Using the Arrhenius equation, the values of the effective constants of the transesterification reaction rate were calculated at different reaction temperatures. In addition, based on the experimental data, the activation energy and the pre-exponential factor of the transesterification reaction were determined.Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 218
 Vaclav Smil. Energy in the twentieth century: resources, conversions, costs, uses, and consequences. Annu. Rev. EnergyEnviron. - 2000, - 25: - P. 21-51.
 By 2030, energy consumption in the world will grow by 30% http://www.atomic-energy.ru/news/2017/01/27/72087.
 Chernysheva E Global warming warms up carbon dioxide
 Why is the level of CO2 in the atmosphere so alarming to scientists? https://www.bbc.com/russian/features-37769027
 Dubov A. Atmosphere Greenhouse Gas Reaches Record Levels// https://nplus1.ru/news/2017/10/30/greenhouse-gas-record
 Tyutyunnikov B.N., Buchstav Z.I., Gladky F.F. et al. // Chemistry of fats. M., "Kolos", - 1992, - P. 448.
 Gumerov F.M. Supercritical fluid technology. Economic expediency. Kazan, Academy of Sciences of Tatarstan - 2019, - P.440.
 He, H., Sun, S., Wang, T., Zhu, S. Transesterification kinetics of soybean oil for production of biodiesel in supercritical methanol. Journal of the American Oil Chemists' Society. - 2007, - 84, - P. 399-404.
 Gumerov F.M., Usmanov R.A., Mazanov S.V. et al. Biodiesel. Transesterification under supercritical conditions. Kazan, Academy of Sciences of Tatarstan - 2017. - P.360.
 Gabitova A.R., Mazanov S.V., Usmanov R.A., Zaripov Z.I., Gumerov F.M., Abdulagatov I.M. Viscometry as a method for determining concentration of fatty acid ethyl esters in biodiesel fuel / Chemistry and Technology of Fuels and Oils. – 2017. - V.53. - №1. - P. 77-86.
 Biktashev Sh.A., Usmanov R.A., Gabitov R.R., Gazizov R.A., Gumerov F.M., Gabitov F.R. et.al.//Biomass and Bioenergy. 2011. Vol.35. P. 2999-3011.
 Mazanov S.V., Gabitova A.R., Usmanov R.A.,.Gumerov F.M, Labidi S., Amar M.B., Passarello J-P., Kanaev A., Volle F., Le Neindre B.. Continuous production of biodiesel from rapeseed oil by ultrasonic assist transesterification in supercritical ethanol / The Journal of Supercritical Fluids. – 2016. - V.118. - P. 107–118.
 D’Iipolito S., Yori J.C., Ituria M.E., Pieck C.L., Vera C.R. Analysis of a two step, non-catalytic, supercritical biodiesel production process with heat recovery. Energy & Fuels. - 2007.- 21. -P. 339-346.
 Marchetti J.M., Miguel V.U., Errazu A.F. Possible methods for biodiesel production.// Renewable and Sustainable Energy Reviews. - 2007. - №11. - P.1300-1311.
 Ideal reactor models / https://studbooks.net/2401200/matematika_himiya_fizika/modeli_idealnyh_reaktorov
 Waite N. Chemical kinetics. M.: Mir, - 1974. -P.80.
 Zavarukhin S.G., Ivanova A.S., Kukushkin R.G., Lebedev M.Yu., Simonov A.N., Sherstyuk OV, Yakovlev V.A., Trusov L.I. Kinetics of transesterification of rapeseed oil on a heterogeneous barium-alumina catalyst with regard to methanol pressure // Catalysis in industry. -2013. -№. 3. -P. 67-74.
 Kusdiana and Saka. Kinetics of transesterification in rapeseed oil to biodiesel fuel as treated in supercritical methanol; Fuel. - 2001. - 80. - P. 693-698.