Trends in catalytic production of biodiesel from various feedstocks

Rationale for the parameters of equipment for production and use of biodiesel in agricultural production

“…Biofuel is produced at a temperature of 20-70 °С using catalysts in an amount between 0.3 % and 1.5 % by the weight of oil triglycerides [6]. Rational parameters of the transesterification process correspond to a temperature of about 40 °C, 6:1 methanol-to-oil molar ratio, catalyst concentration of 1 %, stirring intensity of 1.8 W/l, duration of up to 40 min [4,9].…”

“…Применение системы подогрева расширяет температурный диапазон использования чистого дизельного биотоплива и умень-шает его расход Ключевые слова: дизельное биотопливо, переэтерификация, смеситель, машинно-тракторный агрегат, система подогрева For biodiesel production, transesterification process is used [3]. For rapid and complete reaction, methanol and alkaline catalyst are used in the process of transesterification [4][5][6]. After the transesterification reaction, separation of a glycerol phase and a phase containing fatty acid methyl esters occurs.…”

“…After adding a methanol-catalyst solution in oil, the biphasic medium, which is unsuitable for the transesterification reaction is formed in the reactor. So, constant stirring is required for emulsification and reaction initiation [4,5]. A contact interphase surface is formed, which increases the reaction rate.…”

“…A contact interphase surface is formed, which increases the reaction rate. However, excessive stirring leads to the destruction of the contact surface, which prevents complete methanolysis reaction and requires significant energy consumption [4,5,7]. Reduction of energy consumption and maximization of the methanolysis reaction completeness are important for biodiesel production at facilities of agricultural enterprises [4,5].…”

“…The biodiesel produced in reactors is similar to diesel, but has a higher kinematic viscosity, cloud point and pour point, lower calorific value [4,7]. Therefore, the use of biodiesel leads to engine performance deterioration [8] and efficiency reduction of machine-tractor units.…”