Research of Change in Fraction Composition of Vehicle Gasoline in the Modification of Its Biodethanol in the Cavitation Field

Abstract

The influence of bioethanol content and parameters of the cavitation field on the quality indicators of motor gasolines: volatility and octane number is studied. Studying the effect of bioethanol and cavitation treatment of bioethanol-gasoline mixture will make it possible to produce automotive fuels for different climatic zones, or winter (summer) versions of gasolines. The use of bioethanol and cavitation treatment of a bioethanol-gasoline mixture affect the fractional composition of motor gasoline and its volatility. The optimal content of the biocomponent, at which there is an increase in the volatility of gasoline, is established Also the results of the octane number change are presented depending on the intensity of cavitation treatment for gas condensate with the addition of bioethanol. The influence of bioethanol content on the increase in octane number during cavitation treatment is determined. It is found that the introduction of bioethanol into the composition of gasoline leads to an improvement in its volatility. In this case, cavitation treatment makes it possible to obtain a mixture resistant to delamination. The addition of bioethanol leads to an adequate increase in light fractions during mechanical mixing and to a change in the fractional composition of the bioethanol-gasoline mixture during cavitation treatment. The addition of bioethanol in amounts up to 10% leads to a decrease in the saturated vapor pressure during cavitation treatment of bioethanol-gasoline mixtures, and an increase in the bioethanol content up to 20% leads to an increase in the saturated vapor pressure, which is explained by a change in the chemical composition of fuel components in comparison with the mechanical method of preparing mixtures. By cavitation treatment it is possible to change the fractional composition, the pressure of saturated vapors and the volatility of bioethanol-gasoline mixtures, making cavitation a promising energy-saving process for the production of gasoline for various climatic conditions

Determining the influence of cavitation treatment on the octane number of gas-condensate gasoline modified with isopropanol

“…Work [14] reports the composition of an alcohol-gasoline mixture before and after cavitation treatment, as well as suggests a path of chemical transformations, which explains the presence of ethers in a bioethanol-gasoline mixture. A similar scheme can be offered to explain the presence of ethers and olefins in the isopropanol-gas-condensate mixture.…”

“…However, the cited research does not provide any theory that could relate the time of cavitation to the intensity of the mechanochemical activation of gasoline and does not consider the effect of cavitation on gasoline when adding alcohols. Another work [14] studied the impact of cavitation treatment on the characteristics of the gasoline fraction modified with bioethanol. It is shown that cavitation can significantly improve the anti-detonation characteristics of alcohol-gasoline mixtures; however, no experimental data are given to investigate the effect of cavitation in the modification of gasoline with other single-atomic alcohols.…”

Use of additive test methods in the simulation of the methanol synthesis column for the creation of a control system from the model

“…Finding the peculiarities of the technological process found its justification and deep analysis in the work [7,8]. It is shown that the impossibility of a direct solution to the problem is related to the fundamental features of the object, namely, a large number of technological parameters, the change of each of which will shift the extremum of concentration.…”

Determining the possibility of using cold plasma for the oxidation of atmospheric nitrogen into nitrogen oxides and the influence of activating substances on the process

“…In [7], a traditional method is shown, which is effective, but the overall performance is limited by several disadvantages. The first drawback is that approximately 30 % of the total cost of producing nitric acid is ammonia as a feedstock, which limits the economic output from this feedstock source and includes environmental concerns.…”