It was studied the physicochemical properties of diesel fuel with a content of 1-5% dehydrated (99.5%) and watered (93%) n-butanol. To obtain homogeneous mixtures, a rotary-type mixer was used at temperatures of 0-25 ° C. It was found that the stability of diesel fuel containing 3% mass. dehydrated n-butanol at room temperature is 60 days. An increase in the content of n-butanol to 5% leads to a decrease in the stability of the prepared mixture up to 45 days. The stability of the diesel fuel mixture with 3% 93% n-butanol is 5 days at normal, and not more than 3 days at a temperature of 0 ° C. Adding to this mixture a 1% emulsifier obtained on the basis of propylene oxide esters with petroleum acids makes it possible to obtain homogeneous diesel fuel while preserving all its physicochemical properties. In addition, it was found that when this mixture is burned, the content of toxic gases, such as carbon oxides, nitrogen and sulfur, in the exhaust gas composition decreases by 24%, 16% and 12%, respectively, in comparison with the burning of butanol-free diesel fuel.
1. INTRODUCTION. Last trends in environmental restrictions make it necessary to upgrade the usage of alternative types of raw materials used for transportation purposes such as motor fuels, bio-based alcohols and other oxygen containing components. Based on that by using environmentally friendly raw materials for producing automotive fuels such as diesel is the main objective of today’s industry. Compared to other lighter fossil derived fuels diesel engine produce more particulate matter-PM, more smoke, and nitrogen oxides-NOx with high thermal efficiency and lower carbon monoxide-CO and hydrocarbon-HC emissions. Specifically, the reduction of NOx and smoke emissions by Exhaust Gas Recirculation (EGR), the variety of catalytic converters, high-pressure injection systems and as well as oxygenated fuels were investigated by many researchers. The major challenge associated with diesel engine is the use of different alcohols in higher percentage mixed with diesel fuel. But the limited capability of miscibility at a lower temperature and the required minimum modification in fuel delivery systems restrict the use of alcohols in diesel fuel. By looking to the statistics, the automobile engines provide more than 80% of emissions to the atmosphere while the share of road transport in the emission of harmful substances reached up to 5 kton per day [1]. Ethers of fatty acids and alcohols are one of alternative ways of using oxygen containing components where the indicative parameters of the engine fuels can be improved. Indeed, the presence of oxygen atoms in these….
Adil's blog 