Peculiarities of Dewatering Technology for Heavy High-Viscosity Crude Oils of Eastern Region of Ukraine

Self Cite

The characteristics of initial crudes of Yablunivske field (Poltava, Ukraine) and the properties of blended crudes have been examined to select the ways of their further processing. The crude oils were found to be heavy high-sulfuric oils without light distillates. The possibility of obtaining paving bitumen from blended crudes under study has been considered. Distilled bitumen obtained through distillation of this blend was found to meet the requirements for commercial paving bitumen 100/150. To improve the durability and resistance to aging of resulting bitumen, a polymeric modifier was added. The modifier amount of 3 wt.% was found to be appropriate to improve the operational characteristics of obtained bitumen to those of BMW 60/90 grade.

Section: Resultsmentioning

confidence: 99%

Production of Distilled Bitumen from High-Viscosity Crude Oils of Ukrainian Fields

Yarmola¹,

Topilnytskyy²,

Gunka³

et al. 2022

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“…), also to introduce the development of HHO and bitumen deposits, and most importantly, to start the search and exploration of heavy oil deposits and natural bitumen within the above-mentioned zones with the prospective discovery of their significant reserves at shallow depths. 16 One such deposit of high-viscosity oil in Ukraine is the Yablunivske field, it is located in the Poltava region, 17 km from Lokhvytsia. 3 At present, the explored oil reserves of the Moscow and Bashkir deposits of the Yablunivske field amount to about 50 million tons, where more than 90 % of all explored oil reserves of the field are concentrated.…”

Section: Production Of Heavy High-viscosity Oil In Ukraine and The Worldmentioning

confidence: 99%

“…This type of oil is extremely relevant for Ukraine because it is a complex raw material for a number of the national economy sectors though today it is not given enough attention. 3,[13][14][15][16] For example, components of motor fuels and distilled bitumen which are obtained from HHO and properly modified, may be used in various industries, e.g. for road construction.…”

Section: Introductionmentioning

confidence: 99%

Disruption of Yeast Cells Xanthophyllomyces Dendrorhous (Phaffia Rhodozyma) by Vibration Resonant Low-Frequency Cavitator

Stefanyshyn¹,

Hunchak²,

Starchevskyy³

et al. 2023

The goal of the study is to optimize the mode of disruption of the yeast Phaffia rhodozyma KNH 1 by a vibration-resonant low-frequency cavitator (VLC). The destruction of the cell biomass of yeast culture P. rhodozyma strain KNH 1 was carried out in VLC with water cooling, the capacity of 800 W, and resonant frequencies of vibrations of 30 Hz, 35 Hz, 37 Hz, 37.8 Hz, 39 Hz, 50 Hz, and in the presence of nitrogen in the reaction medium. Our data suggest that the yield of processed biomass by the treatment of yeast culture in VLC depends on the culture age and the mode of the treatment. Thus, for the six-day culture, we got the highest yield by its processing in VLC at 35 Hz for 75 min. The highest yield from the five-day culture was obtained after the treatment in VLC for 1 h at 37-37.8 Hz. The lowest yield of the disrupted yeast cells was obtained after 5 h of treatment in VLC at 37.8 Hz. The high level of yeast cell disruption can be used for the preparation of glucans aqueous solutions. Our data show that for such a level of disruption to treat five-day culture of P. rhodozyma in VLC at 37 Hz resonance frequency with nitrogen gas, bubbling through the reaction medium is economically profitable. For the first time, this study demonstrates the established optimal mode of destruction of yeast cells of P. rhodozyma strain KNH1 for the action of the vibration-resonance low-frequency cavitator or VLC. Ana¬lysis of the presented data indicates that the claimed me¬thod is convenient, efficient, and technologically justified.

“…The understanding of the initial components mutual influence on the density and viscosity of oil mixtures was based on studies of simple ideal solutions, and as a result, errors occurred in the calculations of technological regimes. [1][2][3][4][5] There is a problem with predicting the viscosity of the formed oil mixtures. The linear law of mixing with respect to viscosity is not applicable.…”

Section: Introductionmentioning

confidence: 99%

“…

1 The deviation of density and viscosity values of oil mixtures from those calculated according to the additivity rule has been examined. Mathematical models have been developed for determining the properties of mixtures with different compositions taking into account the group composition of the source components.

…”

mentioning

confidence: 99%

Simulation of Change in Density and Viscosity of Crude Oil When Mixing

Zamikula¹,

Tertyshna²,

Tertyshny³

et al. 2022

Self Cite

The deviation of density and viscosity values of oil mixtures from those calculated according to the additivity rule has been examined. Mathematical models have been developed for determining the properties of mixtures with different compositions taking into account the group composition of the source components. Mixtures containing components with a high content of alkanes and a low content of arenes have been found to be characterized by extreme deviations of density towards the maximum and kinematic viscosity towards the minimum. The created models were validated and compared with existing methods of describing the oil physicochemical properties. An approach to the creation of optimal from a technological point of view formulation for compounding oil of different types is proposed.