Open AccessModeling of the optimal component composition of biodiesel fuel
Author(s) -
Д. В. Варнаков,
Sergey A. Simachkov,
В. В. Варнаков
Publication year - 2020
Publication title -
agrarnaâ nauka evro-severo-vostoka
Language(s) - English
Resource type - Journals
eISSN - 2500-1396
pISSN - 2072-9081
DOI - 10.30766/2072-9081.2020.21.3.313-320
Subject(s) - cetane number , biodiesel , diesel fuel , rapeseed , lubricity , environmental science , component (thermodynamics) , gost (hash function) , process engineering , mathematics , waste management , chemistry , engineering , thermodynamics , statistics , organic chemistry , food science , physics , catalysis
The article presents the results of study to determine the component composition of rape-based biodiesel. Modelingof the optimal component composition taking into account low-temperature properties and cetane number was carried out. According to the studies, mathematical models of changes in the low-temperature properties of biodiesel fuel depending on the percentage of rapeseed oil were obtained, the optimal ratio of its components was determined and justified. The tests were conducted in 2012-2019. The studied temperature limits correspond to the extreme temperature values of the central and southern regionsof the Russian Federation. The second important task was to determine the optimal ratio of diesel fuel and rapeseed oil whilemeeting the requirements of GOST R52368-05 for the cetane number of biodiesel fuel. Studies of the optimal percentage ratio ofrapeseed oil and diesel fuel per cetane number showed that biodiesel, which contains rapeseed oil in a concentration of up to 30%, meets the requirements of GOST R52368-05 (EN 590:2009). Certified equipment was used in the studies, and the methodology met the requirements of the state standard for their implementation. To solve the problem of determining the optimal ratio ofbiodiesel components, a methodology for assessing temperature and cetane number properties, as well as foreign scientific literature was analyzed in the field of research data. According to the results of the research, hypotheses were put forward that the lowtemperature properties and cetane number of biodiesel fuel change with an increase in the proportion of rapeseed oil in it, as wellas the possibility of mathematical modeling of its optimal component composition corresponding to environmental temperatureconditions during operation of the equipment. The reliability of the approximation of the obtained dependences was 0.83...0.91when studying the low-temperature properties of biodiesel samples within the specified temperatures from -40 to 0 °C.