TECHNOLOGIES OF ENVIRONMENTALLY FRIENDLY MATERIALS: DETERMINATION OF THE OPTIMAL COMPOSITION OF MIXED DIESEL FUEL

Abstract

The issue of improving the quality and finding alternative resources in the fuel sector leads to the use of environmentally friendly materials with improved characteristics. The article presents a calculation method, the purpose of which is to determine the engine-optimal composition of environmentally friendly mixed diesel fuel with improved ecological characteristics consisting of three main components: hydrotreated diesel fuel, biodiesel obtained by transesterification and biodiesel obtained by hydrotreating of vegetable oils. During the work, the individual characteristics of the components were determined. Those characteristics are required to be in compliance with the requirements for diesel fuels (density, viscosity, lubricating properties, sulfur content, cetane number). The qualitative and quantitative composition was investigated by chromatographymass spectrometry method. Classes of hydrocarbons and their specific representatives in each of the components were determined. Using the results of the previous stages, the calculation of the optimal composition of the components was performed using the Ansys Reaction Workbench software. The algorithm for entering the necessary initial data for working with the program, utility-aided calculation of the coefficients of dependencies of individual and thermodynamic properties of substances used in calculations were considered, thereby complementing the basic library of chemical compounds for Ansys Surrogate Blend Optimizer. As a result, a group composition for hydrocarbons was obtained that meets the requirements of the standards for further calculation of the optimal component composition. The usage of mixed diesel fuel that meets GOST R 52368-2005 "EURO diesel fuel Specifications" will not only improve the performance characteristics required in modern diesel vehicles, but also meet the standards of environmental parameters when using it. The appliance of mathematical models for calculating the optimal composition of fuels makes it possible to predict the properties of mixed compositions without experimental determination of the properties and without spending additional resources.