FREE FULL TEXT (PDF)

UDC 665.6		DOI: https://doi.org/10.31617/tr.knute.2020(34)07
Nina MEREZHKO   E-mail: n.merezhko@knutе.edu.ua ORCID: 0000-0003-3077-9636		Doctor of Sciences (Technical), Professor, Head of the Department of Commodity and Customs Affairs, Kyiv National University of Trade and Economics 19, Kyoto str., Kyiv, 02156, Ukraine
Valentyna TKАCHUK   E-mail: Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. ORCID: 0000-0001-5793-5227		PhD in Technical Sciences, Associate Professor at the Department of Commodity Science and Expertise in Customs Affairs at Lutsk National Technical University, 75, Lvivska str., Lutsk, Volyn region, Ukraine, 43000
Volodymyr KОMAKHA   Е-maіl: v.kоmakha@knutе.edu.ua ОRCІD: 0000-0001-6498-9047		PhD in Technical Sciences, Senior Lecture at the Department of Commodity and Customs Affairs, Kyiv National University of Trade and Economics 19, Kyoto str., Kyiv, 02156, Ukraine

OPTIMIZATION OF THE COMPOSITION OF HIGH-OCTANE GASOLINES WITH BIOADDITIVES

 
Background. The influence of the composition (gasoline of catalytic reforming, hydrotreated catalytic cracking, raffinate of benzene production, petroleum solvent, straight-run gasoline, bioisobutyl alcohol, methyl tert-butyl ether) on the performance properties of gasoline was studied. Mathematical models of the "composition – properties" type have been developed, which made it possible to optimize the ratio of the components of the composition of high-othane gasoline and bioadditives.
The aim of the article is to optimize the composition to obtain high-octane gasoline for spark ignition engines using bioadditives.
Materials and methods. Mathematical descriptions of the dependence of gasoline properties on the content of components and their ratios were obtained by the method of regression analysis of experimental data using the central composite rotatable plan. Mathe­matical processing of the experimental results was performed using STAT-SENS software.
Results. The adequacy of the obtained mathematical models was checked accor­ding to Fisher’s test. Since the calculated values of the Fisher test are smaller than their tabular values (at a significance level of 0.05), the obtained models adequately describe the studied process.
The obtained models were used to find the optimal composition of high-octane gasoline. When determining the optimal content of components, it was taken into account that the content of aromatic hydrocarbons in the gasoline composition should not exceed 35 vol.%, Sulfur content – not more than 10 mg / kg, benzene content – not more than 1.0 vol.%, And octane number – in the ranges corresponding to the brand of gasoline: A-92 (92–93), A-95 (95–96), A-98 (98–99). By the method of multicriteria optimization of the data array according to the obtained mathematical models, the values ​​of factors corresponding to the optimal compositions of high-octane gasoline with bioadditives were obtained in coded units and natural values.
Conclusion. The optimal compositions of high-octane gasolines of different brands with the use of bioadditives were obtained. The consumption of bioisobutyl alcohol and methyl tert-butyl ether in a mixture of high-octane gasoline with bioadditives is calculated. The optimal compromise area for obtaining gasolines with specified parameters with the possibility of regulating the content of bioadditives in the studied compositions is established.
Keywords: gasoline, bioadditives, mathematical modeling, octane number, bio­isobutyl alcohol, methyl tert-butyl ether, optimal composition.

REFERENCES

1. Bojchenko, S. V., Ivanov, S. V., & Burlaka, V. G. (2005). Motorni palyva i masla dlja suchasnoi’ tehniky [Motor fuels and oils for modern technology]. Kyi’v: NAU [in Ukrainian].
2. Topil’nyc’kyj, P. I., Grynyshyn, O. B., Lazorko, O. I., &  Romanchuk, V. V. (2015). Fizyko-himichni ta ekspluatacijni vlastyvosti tovarnyh naftoproduktiv [Physico-chemical and operational properties of commercial petroleum products]. L’viv: Vydavnyctvo L’vivs’koi’ politehniky [in Ukrainian].
3. Golych, Ju. V., Bojchenko, S. V., Topil’nyc’kyj, P. I., & Romanchuk, V. V. (2015). Zalezhnist’ znevodnennja naft vid i’h fizyko-himichnoi’ harakterystyky [Dependence of oil dehydration on its physicochemical characteristics]. Naftogazova galuz’ Ukrai’ny – Oil and gas industry of Ukraine, 1, 25-30 [in Ukrainian].
4. Gajdaj, O. O., Zubenko, S. O., Polunkin, Je. V., & Pyljavs’kyj, V. S. (2011). Ekolo­gichni ta ekspluatacijni harakterystyky palyva motornogo biologichnogo E-85 [Eco­logical and operational characteristics of E-85 motor biological fuel]. Materialy zbirnyka naukovyh statej III Vseukrai’ns’kogo z’i’zdu ekologiv – Materials of the collec­tion of scientific articles of the III All-Ukrainian Congress of Ecologists. Vinnycja: VNTU. (Vol. 1), (pp. 308-310) [in Ukrainian].
5. Gajdaj, O. O., Zubenko, S. O., Starzhyns’ka, L. I., Polunkin, Je. V., & Kovtun, O. G. (2011). Palyvna sumish dlja dvyguniv vnutrishn’ogo zgorjannja [Fuel mixture for internal combustion engines]. Patent UA N 63041 [in Ukrainian].
6. Sazonov, A. S., Ushakov, A. I., & Oreshenkov, A. V. (2006). Kachestvo avtomobil’nyhtopliv [Automotive fuel quality]. Saint Petersburg: NPIKC [in Russian].
7. Tkachuk, V. V. (2014). Ocinka jakosti svitlyh naftoproduktiv [Quality assessment of light petroleum products]. Mizhnar. nauk.-prakt. zhurnal "Tovary i rynky" – Inter­national scientific-practical journal "Commodities and markets", 1 (15),131-138 [in Ukrainian].
8. Tkachuk, V., Rechun,O., & Melnic, Iu. (2019). Study of operational properties of motor biofuels. Mechanization in agriculture &conserving of the resources. (Vol. 65). (Issue 2), (pp. 70-71) [inEnglish].
9. Merezhko, N., Tkachuk, V., & Zinchenko, O. (2019). Ekspluatacijni vlastyvosti ben­zyniv z bagatofunkcional’nymy dobavkamy [Performance properties of gasolines with multifunctional additives]. Mizhnar. nauk.-prakt. zhurnal "Tovary i rynky" – International scientific-practical journal "Commodities and markets", 4 (32), 50-61. doi: 10.31617/tr.knute.2019(32)05 [in Ukrainian].
10. Gajdadin, A. N., Efremova, S. A., & Nistratov, A. V. (2008). Metody optimizacii v tehno­logicheskoj praktike [Optimization methods in technological practice]. Volgograd: VGTU [in Russian].
11. Tehnichnyj reglament shhodo vymog do avtomobil’nyh benzyniv, dyzel’nogo, sudno­vyh ta kotel’nyh palyv [Technical regulations on requirements for motor gasoline, diesel, marine and boiler fuels]. Retrieved from https://zakon.rada.gov.ua/laws/show/927-2013-%D0%BF [in Ukrainian].
12. Benzyny avtomobil’ni Jevro. Tehnichni umovy [Automobile gasoline Euro. Speci­fications]. (2015). DSTU 7687:2015. Kyi’v: Derzhspozhyvstandart Ukrai’ny. Retrieved from http://online.budstandart.com/ua/catalog/doc-page.html?id_doc=62187 [in Ukrainian].
13. Halafjan, A. A. (2007). Statisticheskij analiz dannyh [Statistical Data Analysis]. Moscow: Binom [in Russian].