Кафедри
Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/35393
Переглянути
6 результатів
Результати пошуку
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, AndreyThe 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.Документ The prospects of obtaining plastic greases from secondary hydrocarbon raw material(2018) Grigorov, Andrey; Zelenskii, Oleg; Sytnik, AlexeyThe 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.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, MikhailThe 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.Документ Possibility of producing plastic lubricants by thermal destruction of solid domestic wastes(2020) Grigorov, Andrey; Zelenskii, Oleg; Sytnik, Alexey; Nahliuk, IvanThe results of non-catalytic thermal destructive processing of solid domestic waste at atmospheric pressure and temperature of 360°C, which are represented by products of low pressure polyethylene, are presented. The products obtained during degradation can be divided into fuel products (gas, liquid hydrocarbon fraction, coke residue) and fraction (with the beginning of boiling in the temperature range 200-320°C), which can be used in the production of greases. After the heat treatment and cooling of these fractions, a product with properties similar to NYCO 65 VASELINE (Technical petrolatum (GREASE)) can be obtained. For the production of plastic lubricants with other properties and a large temperature interval of application, a scheme has been proposed, it provides for the addition of fillers and additives of different functional purpose to the lubricant obtained.Документ Adhesion properties of recycling greases(2019) Grigorov, Andrey; Sytnik, Alexey; Karchakova, Valeriia; Ponomarenko, Vitaliy; Rudniev, VasylThe results of the study of the adhesion properties of recycling greases expressed in terms of the residual amount of grease that is stored on a metal plate after testing in a laboratory centrifuge are presented. It was established that the investigated samples of recycling greases in the range of the thickness of the deposition layer up to 1.0 mm, by their adhesion properties, are fully suitable for using in all types of bearings operated with a rotation speed of up to 2500 rpm. From the number of investigated grease samples, samples with a deposition layer thickness of 0.1 mm o have evidence of fairly high values of the rotational speed when the threshold value of the residual amount of grease is reached.Документ Ways of improving the equipment for primary petroleum refining(2019) Sater, Nabil Abdul; Grigorov, Andrey; Tulskaya, Alena; Ovsiannikova, Tatiana; Sytnik, AlexeyThe general ways of improvement the primary petroleum refining rigs have been described in this article. It has been proposed to consider the operational control of primary petroleum refining processes as the most perspective branch of petroleum industry due to its comparatively cheap implementation. Operational control has a significant influence on the safe operation of equipment, products quality and amount of harmful emissions. Electrical conductivity and relative permittivity have been defined as the specific parameters for effective operational control.Primary oil refining rigs are the most important part of any petroleum refinery. Despite the Nelson complexity index which is only 1,0 for refineries it should be considered that they have a strong impact on the secondary refining rigs. That’s why one of the most important task in the petroleum refining industry worldwide is improvement of primary oil refining rigs.