MODELS AND METHODS IN MODERN SCIENCE
International scientific-online conference
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IMPACT OF THE DEVELOPED ADDITIVE ON THE QUALITY
PARAMETERS OF DIESEL FUEL AT BUKHARA OIL REFINERY LLC
Fozilov Sadriddin Fayzullayevich
Doctor of Technical Sciences, Prof.
Rabbimov Jakhongir Shodmonkulovich
Assistant
Bukhara State Technical University
Karshi Engineering and Economic Institute
https://doi.org/10.5281/zenodo.14887591
Annotation.
Among the additives used for diesel fuels in the market of
most developed countries, additives that increase the cetane number are
widespread. Analysis of the existing range of promising cetane-increasing
additives showed that the main components of these additives are compounds
such as cyclohexylnitrate or 2-ethylhexylnitrate. The development of an additive
that increases the local cetane number based on cheap and available raw
materials is a pressing problem and has great practical significance.
Keywords:
additive, fuel, corrected wear spot, hydrotreated, mercaptan,
sulfur, concentration, kinematic viscosity, density.
We conducted a study of the influence of additives on the cetane number of
hydrotreated diesel fuel of the Bukhara Oil Refinery. The concentration range of
the additives was chosen in the range from 0 to 0.5% by mass, in which a
significant increase in the cetane number was observed, and with a further
increase in the additive concentration, the increase in the cetane number slowed
down. The dependence of the cetane number of diesel fuel on the concentration
of the synthesized additive is shown in Fig. 1.
To meet the modern requirements of Euro-3 and higher standards, the
value of the cetane number should not be less than 51.0 units. Fuels with a high
cetane number in the range of 51-55 are required for new generation engines.
Obtaining fuel with such a cetane number is associated with the production of
components with a high cetane number value or the use of additives that
increase the cetane number.
MODELS AND METHODS IN MODERN SCIENCE
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Figure 1. Dependence of the cetane number on the concentration of
the additive in the diesel fuel of the refinery.
Therefore, when the developed additive, as can be seen from Figure 1,
reaches 0.5% by weight in the fuel composition, it was possible to increase the
cetane number of hydrotreated diesel fuel with the additive to 3.0 units
compared to the initial hydrotreated diesel fuel.
As can be seen from Fig. 1, with an increase in the cetane number of diesel
fuel by 0.1% by mass, the increase in the cetane number is 1.4 units. Diesel fuel
cetane-increasing additive with a subsequent increase in the concentration of,
the increase in the cetane number significantly slows down. For example, with
an increase in the cetane number by 0.2% by mass, the increase is 0.8 units
compared to diesel fuel containing an increase of 0.1% by mass, then from 0.2 to
0.2% by mass, the increase is 0.55 units, from 0.3 to 0.4% by mass, the increase
is 0.3 units, and for the concentration interval from 0.4 to 0.5% by mass, the
increase is 0.15 units.
Thus, the developed cetane-increasing additive made it possible to improve
the operational properties of hydrotreated diesel fuel produced at the Fergana
Oil Refinery.
Studies conducted on the influence of foreign manufacturers' cetane-
increasing additives and the developed cetane-increasing additive on the quality
indicators of hydrotreated diesel fuel of the Fergana Oil Refinery showed
significant changes in the value of the cetane number. In this regard, we have
developed samples of additives No. 1-8 of foreign manufacturers and samples
cetane-increasing we summarized the experimentally obtained data on the
influence of additives on the cetane number of hydrotreated diesel fuel
produced at the FNPP.
It should be noted that the developed cetane-increasing additive in this
concentration range is not inferior in efficiency to the cetane-increasing
additives of foreign manufacturers. For example, the concentration of the
cetane-increasing additive in diesel fuel is 0.1 wt. %, the value of the cetane
number is 52.4 units.
Thus, when the synthesized additives are introduced into hydrotreated
diesel fuel at a concentration of 0.01-0.5% by mass, an increase in the cetane
number of diesel fuel from 51 to 54 is observed.
MODELS AND METHODS IN MODERN SCIENCE
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