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Зараз показуємо 1 - 10 з 20
  • Ескіз
    Документ
    Dielectric Control of Motor Fuel Compounding Plants
    (2022) Sater, Nabil Abdel; Grigorov, Andrey; Neustroieva, Gelena; Bondarenko, Oleksandr; Matukhno, Vasyl; Vavreniuk, Sergii
    The article proposes the use of operational dielectric control system to increase the efficiency of operation of automatic compounding of motor fuels. These plants are used at oil refining enterprises in Ukraine and are an integral part of the technological chain of the commercial fuels production. It is established that all the main components and additives used for the production of commercial gasoline brands A-92, A-95 and A-98 have higher values (εmix) than straight run base gasoline. And this, in turn, can be used for operational control of the gasoline compounding process. This control can be carried out on the basis of the information received from capacitive sensors which are located in pipelines of the main material streams. Moreover, the control is carried out on the content of components (X, %) or on the value of the octane number (ON, point) of the mixture on the basis of experimentally obtained dependences 𝜀𝜀mix=𝑓𝑓(𝑋𝑋) and ОN=𝑓𝑓(𝜀𝜀mix).
  • Ескіз
    Документ
    Modern Trends in The Use of Additives in Fuel and Oil Materials (Overview)
    (2022) Trotsenko, Oleksandr; Grigorov, Andrey; Nazarov, Valerii; Nahliuk, Mikhail
    Domestic and foreign literature data were reviewed on the conditions and features of additives use, their required content in fuel and oil materials, and the study of their characteristics in order to systematize data on additives used to improve the operational properties of fuel and oil materials. The use of additives in the composition of fuel and oil materials can significantly increase the level of their operational properties, without serious production costs associated with deep cleaning and preliminary preparation of raw products, compounding of raw products, technical re-equipment of production, etc. A list of additives was offered to fuel and oil materials used in the world practice of their production and application, added with dyes. These additives should be included in the main package of production branded premium fuel and oil materials, create their classification, simplify the procedure for identifying different batches, simplify the procedure for transportation, storage and distribution of fuel and oil materials. At the same time, among all the variety of dyes that are currently used for coloring to fuel and oil materials, the most appropriate is to use those that carry out multifunctional properties. These properties, depending on the type of materials, along with the color, can be density, detonation resistance, anti-corrosion. This approach, on one hand, will allow to balance the amount and properties of additives included in the overall package, on the other hand - will reduce production cost of the fuel and oil materials.
  • Ескіз
    Документ
    Recycling of Polymer Waste into Plastic Lubricants
    (2022) Grigorov, Andrey; Sinkevich, Irina; Ponomarenko, Natalia; Bondarenko, Oleksandr; Usachov, Dmytro; Matukhno, Vasyl; Shevchuk, Oleksandr
    A technology for the production of greases from polymeric household waste has been proposed, including the stage of boiling the polymer in a solvent, which is used as a used motor oil SAE10W-40. In the production of greases using this technology, a significant amount of used polymer products is utilized, while the share of waste from low-pressure polyethylene and polypropylene (PP) is, respectively, 20-50% of the mass and 50-75% of the mass. This approach makes it possible to significantly expand the raw material base of the specified technological process and, due to the involvement of relatively cheap raw materials, significantly reduce the cost of finished products. The results of the study of the adhesive properties of the obtained lubricants allow us to give the following recommendations: for lubricants based on low-pressure polyethylene with a polymer: oil ratio of 1: 1, the rational rotation speed was no more than 2850 rpm, with a ratio of 1: 3 - about 3950 rpm and with a ratio of 1 : 5 - up to 5300 rpm; rational rotation speed for lubricants based on PP at a polymer: oil ratio of 1: 1 does not exceed 3600 rpm, at a ratio of 2: 1- 4900 rpm and at a ratio of 3: 1 - 6000 rpm.
  • Ескіз
    Документ
    Compatibility of Recycling Plastic Lubricants
    (2023) Grigorov, Andrey; Ponomarenko, Vitaliy; Slepuzhnikov, Yevhen; Bondarenko, Oleksandr; Artemev, Sergey; Ilinskyi, Oleksii; Bryhada, Olena
    The compatibility of recycled greases thickened with 5 % (wt.) polyethylene and polypropylene solid waste was studied. It was found that according to the values of the dropping point and adhesive properties, recycled greases, regardless of the base oil and thickener, are compatible. However, when 10 % (mass) of recycled lubricants are added to Solidol "Zh", its adhesion properties deteriorate by 300-400 rpm, due to the negative effect of the aging products of base oils on its structure, which indicates their incompatibility.
  • Ескіз
    Документ
    Effect of expansion pressure of the coal blend in the process of coking on the refractory masonry of coke ovens
    (2019) Sytnik, Alexey; Zelenskii, Oleg; Fidchunov, Alexey; Desna, Natalia; Grigorov, Andrey
    The studies conducted on one of the coke batteries showed that as the pressure of the charge spreads, the amount of throughput of raw coke gas in the heating system of the oven increases, which indirectly confirms the relationship between the pressure of the load and the deflection of the heating wall.
  • Ескіз
    Документ
    Technological processing of oil waste
    (2016) Sinkevich, Irina; Grigorov, Andrey; Mardupenko, Aleksey
    Since oil waste is one of the most dangerous component of natural environment, the great attention should be paid for the problem of its keeping and processing. Oil waste may be processed in thermal, physical, chemical and biological ways. Present article describes the processing of oil waste by light thermal cracking. Products of thermal cracking of oil waste, due to their properties, may be widely used in motor oil and other kinds of fuel production.
  • Ескіз
    Документ
    Adhesion properties of modified bitumen
    (2020) Grigorov, Andrey; Mardupenko, Aleksey; Sinkevich, Irina; Tulskaya, Alena
    The article presents the results of determining the adhesion properties of bitumen modified with polymeric additives based on polypropylene and polystyrene foam with graphite additives. It has been found that a sample with the addition of 3% (mass.) Polypropylene (peel strength of the plate 2.47 N/cm²; peel of the coating from the marble plate at a speed of 7000 rpm; shift of marble plates by 5000 rpm) has the best adhesive properties. And at a polymer concentration of 10% (mass.), The best properties are manifested in a sample containing polystyrene foam with graphite additives (plate tear-off force 3.15 N/cm²; tear-off occurs at a speed of 8000 rpm; marble plates shift by 8000 rpm ).
  • Ескіз
    Документ
    Technological processing of oil sludge
    (ФОП Бондаренко М. О., 2017) Mardupenko, Aleksey; Grigorov, Andrey; Sinkevich, Irina; Tulskaya, Alena
  • Ескіз
    Документ
    The prospects of obtaining plastic greases from secondary hydrocarbon raw material
    (2018) Grigorov, Andrey; Zelenskii, Oleg; Sytnik, Alexey
    The paper presents the results of producing lubricating grease from industrial and household waste in the laboratory. Partially prepared diesel engine oil SAE 10W-40 was used as a dispersion environment, and high and low pressure polyethylene (household polyethylene bags used) was used as thickener. It has been established that by using selected base oil, thickener and anti-wear additive DF-11, recy-cling oils can be obtained, which will be classified according to DIN 51502 to K2PF-30 and K3PF-30. It is proposed to expand the raw material base for the production of recycling oils through the using of waste industrial, hydraulic, transmission oils, as well as high-boiling petroleum fractions extracted from oil sludge or acidic tar and selective waste distillate oils. On the basis of the analysis of the researching results, it was established that on the basis of exhausting motor oil and polyethylene with the addition of additives of different functional purpose, it is possible to obtain a number of antifriction plastic lub-ricants used in swing bearings, railway and protective greases that can be used in the range of oper-ating temperatures, on average up to 100ºC.
  • Ескіз
    Документ
    Selection of a dispersion medium for recycling plastic greases according to fire and explosion indicators
    (2020) Grigorov, Andrey; Sytnik, Alexey; Ponomarenko, Natalia; Neustroieva, Gelena; Nahliuk, Mikhail
    The article presents the results of determining fire and explosion hazard indicators for used lubricants, which are supposed to be used as a dispersion medium in the production of recycling plastic greases. Having determined the flash point of the oils, it is possible to calculate the values of the ignition temperature and self-ignition according to linear regression equations, with an error of up to 2 °C. The flash point can be a criterion when choosing raw materials and layout of the technological scheme for the production of recycling plastic greases.