| Popis: |
Laboratory experimental studies of the electrotechnological complex for the treatment of mixed biofuels have been developed, manufactured, and conducted. By functional purpose, the electrotechnological complex consists of three main parts: a block of operating mode switches, a microwave electromagnetic unit, and an ultrasonic unit. The main elements of the microwave unit are a high-voltage network transformer, rectifier, a unit of voltage doubling, a magnetron, and an antenna fan. The main elements of the ultrasonic unit are an ultrasonic generator, a magnetostrictive unit, a submagnet unit, a transformer, and a rectifier. Laboratory studies of the electrotechnological complex were carried out on mixtures of commercial mineral diesel fuel L-0.2-26 and methyl ester of rapeseed oil, which was produced at the enterprise LLC “Bionafta Ukraine” (Pavlograd, Ukraine). Experimental samples of the mixtures were prepared from rapeseed oil from diesel fuel and methyl ether in percentage terms: 90% diesel + 10% MERO (mixture 1), 80% diesel + 20% MERO (mixture 2), and 70% diesel + 30% MERO (mixture 3) in the amount of 100 L per sample. At the first stage, the viscosity and density of the control samples were measured. Then, the samples were processed in the electrotechnological complex for 5 min, and a measurement of the viscosity and the density of the treated samples was carried out. On the basis of the obtained data, the dependence of the viscosity on the time of observation for mixtures 1, 2, and 3 and density dependence on the concentration of methyl ester of rapeseed oil in diesel fuel were constructed. It was established that the co-processing of biofuel B10 and B20 by ultrasound and ultrahigh-frequency electromagnetic field in the electrotechnological complex for 5 min allowed to reduce its viscosity by 22.8 and 22.69%, respectively, in attitude to the untreated biofuel. |
