Сучасні технології переробки пальних копалин : міжнародна науково-технічна конференція
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Документ Additives to petroleum bitumen from brown coal of Ukraine(Національний технічний університет "Харківський політехнічний інститут", 2024) Lysenko, Liudmyla; Bogoyavlenska, Olena; Miroshnichenko, Denis; Miroshnychenko, Mykhailo; Pyshyev, Serhiy; Chipko, Taras; Donchenko, Myroslava; Prysiazhnyi, YuriyIt is known that there are significant deposits of lignite (brown coal) in Ukraine. Therefore, new methods of using lignite and processing its products are necessary. The latter includes humic acids. The main reason for adding humic acids to road bitumen under the specified conditions is to improve its resistance to technological aging compared to the original binder.Документ Coke segregation in the dry coke quenching unit(Національний технічний університет «Харківський політехнічний інститут», 2023) Kravchenko, Serhii; Miroshnichenko, Denis; Borisenko, OleksandrThe main reasons for the appearance of coke segregation when it is loaded into the chamber of a dry coke quenching unit (DCQU) are considered. The formation of the distribution of coke particles of different size along the height and cross-section of the quenching chamber begins already when the coke is unloaded into the DCQU prechamber and is determined by segregation processes. In the quenching chamber, zones with coke of different fractional composition and with different hydraulic resistance are formed, which, in the end, leads to different final temperatures of the quenched coke and, as a rule, to the need to increase the flow rate of the coolant. It is shown that the segregation of coke is already formed when it is discharged from the coking chamber into the coke carrier and then transferred to the DCQU prechamber. Methods for suppressing coke segregation occurring in a coke carrier when loading into a prechamber were tested on a scale model of the DCQU.Документ Transfer of operating coke battery to loading with stamped charge(Національний технічний університет "Харківський політехнічний інститут", 2024) Kravchenko, Sergiy; Miroshnichenko, Denis; Koval, Valentinе; Soloviev, Mykhailo; Kogtin, Artem; Abdullin, Sergiy; Grankin, OlexanderIt is known that the production of blast furnace coke using stamping technology allows the use of a large amount of cheap gas coal without reducing the quality of the blast furnace coke obtained. However, despite the fact that this coking technology has been used for a long time, the literature data as per the effect of increasing density on coke quality parameters are very scarce and outdated. Furthermore, the findings in these articles are sometimes contradictory. Taking into account the above, the purpose of the study was to verify the appropriate costeffectiveness and efficiency of coke production while optimizing the consumption of scarce raw materials, which would allow optimizing production in the conditions of an operating coke chemical enterprise. The article describes the main technical solutions for transferring the operating coke battery from the technology of loading coking chambers by gravity to the technology of loading stamped coal cake and gives the results of the reconstructed coke battery. This project was developed and implemented by the companies SE GIPROKOKS and HuDe. It is shown that during the control observation period (19 months) of the enterprise's operation, the mechanical strength of coke M25 increased from 85.2 to 87.4% on average; the coke strength after reaction CSR - from 48.9 to 53.9%; at the same time, the index M10 was decreased from 8.0 to 5.9%; and CRI - from 38.0 to 37.2%, respectively, when working with the stamping technology compared to operation with the gravity method technology. Also, coke obtained using the charge stamping method is characterized by lower values of ash content and total sulfur content.