Bogdanov, Ilya Aleksandrovich

Morozova, Yana Pavlovna

Electronic archive of Tomsk Polytechnic University

Том 2 XXIII Международная конференция «Химия и химическая технология в XXI веке»2200.5–1.0 mm. Zeolite was provided by “Novosibirsk chemical concentrates factory”. Table 2 shows the zeoforming products (ZP) properties data.The table 2 data shows the increasing octane number of the product in comparison with the feed-stock by an average of 27 %, which sets these ob-tained products as promising blending components for production of various brands of passenger cars gasoline, despite of exceeding the passenger cars gasoline and slightly exceeding the benzene con-tent, as well as low density values.References1. USS 32513-2013 Automotive fuels. Unleaded petrol. Specifications. – М.: Standardinform, 2014 – 16 p.2. NCCF. [Web course]. – Website URL: http://www.nccp.ru/products/zeolite_catalysts, free. – Date of application 27.02.2022.INFLUENCE OF THE N-PARAFFIN MOLECULE HYDROCARBON CHAIN LENGTH IN THE COMPOSITION OF DIESEL FUEL ON THE EFFECTIVENESS OF THE DEPRESSANTY. P. Morozova, I. A. BogdanovLinguistic advisor – researcher I. A. BogdanovNational Research Tomsk Polytechnic University Russia, Tomsk, Lenin avenue, 30, yana_morozova@tpu.ruAccording to the Ministry of Energy in the Russian Federation, there is an increased need for the production of diesel fuel (DF) especially of winter and arctic brands. Such method of obtaining low-freezing brands of diesel fuel as the use of de-pressant additives makes it possible to avoid signif-icant costs in the development of fuel and simplify the production process. It is known that the content of n-paraffin hydrocarbons in the composition of diesel fuel affects the effectiveness of the depres-sant additive, and to a greater extent this effect de-pends on the structure of hydrocarbons [1]. Thus, the aim of this work is to study the effect of the of the n-paraffin molecule hydrocarbon chain length in the composition of diesel fuel on the effectiveness of the depressant.In the course of the work, the cold filter plug-ging point (CFPP) was determined for two sam-ples of diesel fuel of various compositions (DF1 and DF2) with the depressant additive (Ad). Next, blends of diesel fuel samples with an additive and the addition of n-paraffin hydrocarbons (n PH) were prepared and CFPP was determined for them. The representatives of n-paraffins were chosen: cetane (С16Н34), heptadecan (С17Н36), heneicosane (С21Н44) and docosane (С22Н46). Changes in CFPP of DF/Ad/n-PH blends relative to CFPP of DF/Ad blends are shown in Figures 1 and 2.Based on Figure 1, it can be seen that the ad-dition of small concentrations (1 and 3 % vol.) of Table 1. Properties of SGC samplesProperty SGC 1 SGC 2 SGC 3RON, points 66.4 69.0 66.5MON, points 63.5 65.7 63.4RVP, kPa 74.1 67.2 58.7Density under 15 °C, kg/m3 678.8 685.4 685.5Benzene content, vol. % 0.14 0.10 0.14Table 2. Properties of zeoforming productsProperty ZP 1 ZP 2 ZP 3RON, points 88.4 86.1 82.6MON, points 84.1 81.3 77.8RVP, kPa 153.6 168.5 127.3Density under 15 °C, kg/m3 681.8 690.6 703.2Benzene content, % vol. 1.14 1.05 0.93Fig. 1.  Changes in CFPP of DF1/Ad/n-PH blends relative to the properties of DF1/Ad blends Секция 7.  Химия и химическая технология на иностранном языке (английский)221heavy n-paraffins (heneicosane and docosane) has a positive effect on the effectiveness of the additive, and with the addition of 3 % vol. heneicosane to the DF1/Ad blend, the greatest positive effect was observed.Based on Figure 2, it can be seen that with an increase in the concentration of heavier n-paraffins, the positive effect on the effectiveness of the de-pressant additive decreases and turns into a negative one. It is also seen that the addition of cetane in any amount has a positive effect on the effectiveness of the additive, and at a cetane concentration of 5 % vol. the greatest improvement in the efficiency of the additive is observed. Thus, it is shown that the depressant addiive with the same addition of pure hydrocarbons to diesel fuel samples gives a different effect, which is due to the difference in the initial composition of diesel fuel samples.References1. Study of the influence of the composition of straight-run diesel fuels on the effectiveness of low-temperature additives / I. A. Bogdanov, A. A. Altynov, N. S. Belinskaya, M. V. Kirgina // Oil refining and petrochemistry. Scientific and technical achievements and best practices, 2018. – № 11. – P. 37–42. (In Russ.).OBTAINING DIESEL FUELS WITH IMPROVED LOW TEMPERATURE PROPERTIES BY ADDING PETROLEUM RESINS, n-PARAFFINS AND A DEPRESSANTA. M. OrlovaSupervisor – Associate Professor of School of Earth Sciences & Engineering M. V. KirginaNational Research Tomsk Polytechnic University 30 Lenina Avenue, Tomsk, 634050, Russia, orlovaalina41@gmail.comNowadays the search for technologies and methods for obtaining diesel fuels with improved low temperature properties (DF) for regions locat-ed in the Arctic climatic zone has not lost its rele-vance [1]. Low-temperature characteristics, such as cloud point (Cp), Cold filter plugging point (CFPP) and pour point (Pp) of diesel fuel, mostly depend on the hydrocarbon composition of the fuel, especially on the content of long-chain alkanes (n-paraffins) having a high crystallization temperature [2]. The introduction of depressants, both synthetic (Ds) and natural (petroleum resins, Dn), allows diesel fuel to remain mobile at lower temperatures, blocking the growth of crystals during interactions with the ini-tial crystallization centers of n-paraffins.The research presents the results of studies of the effect of adding depressants of various nature on the low-temperature properties of the mixtures of DF and depressants (Table 1).As can be seen from the results of the determi-nation of low-temperature properties in Table 1, the addition of depressants of different nature leads to an improvement in cold filter plugging point (Δ16 °C and 1 °C, respectively) and pour point (Δ29 °C and 8 °C, respectively). Simultaneous addition of de-pressants of synthetic and natural origin gives the best result in relation to CFPP (Δ19 °C).The effectiveness of low temperature additives is determined by the content of n-paraffins (P) in Fig. 2.  Changes in CFPP of DF2/Ad/n-PH blends relative to the properties of DF2/Ad blendsTable 1. Low-temperature properties of diesel fuel with depressants mixturesSampleCp CFPP Pp°CF 0 0 –8FDs –2 –16 –37FDn 0 –1 –16FDsDn –2 –19 –36

Influence of the n-paraffin molecule hydrocarbon chain length in the composition of diesel fuel on the effectiveness of the depressant

http://earchive.tpu.ru/bitstream/11683/72664/1/conference_tpu-2022-C27_V2_p220-221.pdf

Influence of the n-paraffin molecule hydrocarbon chain length in the composition of diesel fuel on the effectiveness of the depressant

Abstract

Similar works

Full text

Available Versions

Electronic archive of Tomsk Polytechnic University