Thermooxidative Regeneration of Used Mineral Motor Oils

Korchak, Bohdan; Grynyshyn, Oleg; Chervinskyy, Taras; Shapoval, Pavlo; Nagurskyy, Andriy

doi:10.23939/chcht14.01.129

Cited by 8 publications

(8 citation statements)

References 4 publications

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“…Research conditions for studying the water influence on the process of oxidative purification of kerosene and diesel fractions are given in Table . The value of process factors is based on previous studies. − Experimental results are presented in Tables and .…”

Section: Resultsmentioning

confidence: 99%

“…The proposed technology can also be used for refining oil fuels or regeneration of spent mineral motor oils produced on a small scale, especially when hydrotreating is uneconomical or technologically impossible. Finally, the process can also be used for further treatment of hydrogenates and partial desulfurization of straight-run fractions to obtain fuel components with improved lubricating properties. − The chemistry of the oxidation process of sulfur compounds has also been studied in sufficient detail under proposed conditions …”

Section: Introductionmentioning

confidence: 99%

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Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

et al. 2022

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The noncatalytic oxidative desulfurization process of straight-run kerosene and diesel fractions with high sulfur contents due to their treatment with air without using expensive catalysts and strong oxidants is considered. The research was carried out in a periodic mode in a bubble-type reactor with a volume of 1 × 10 –3 m 3 under the following conditions: 180–200 °C; 2.5–3.0 MPa; the process lasted for 20–30 min; the air/raw material ratio was 1.6–2.2 m 3 /min per 1 m 3 of raw material. The process can be used to obtain industrial jet fuels and diesel fuel components with good lubricating properties. The possibility and expediency of carrying out the process in the presence of water have been studied. The ratio of water/raw materials (vol.) varied from 0:1 to 2:1. It was proven that the water presence in the reaction medium has a positive effect on the studied process and decreases the oxidation intensity of hydrocarbon medium by 2–4 times. This is due to both the slowing of oxidation reactions by water during peroxide decomposition and chain growth and branching and the partial change in chemical oxidation with the formation of phenols and/or tertiary alcohols, which are inhibitors of oxidation reactions. On the other hand, water has almost no effect on the removal degree of sulfur compounds.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

et al. 2022

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“…-thermooxidative regeneration [13]: temperature 473 K, pressure 2 MPa, time 2 h; -regeneration with urea [14]: temperature 413 K, time 80 min, the amount of urea is 5 wt % raw materials.…”

Section: Integrated Methods For Ummo Regenerationmentioning

confidence: 99%

“…The regeneration of UMMO obtained from gasoline and diesel combustion engines involves analysis of their aging products and changes in physico-chemical properties, as well as the requirements for regenerated oils to ensure the economic feasibility and obtaining high quality regenerated oil. According to the results represented in [12][13][14], UMMO were regenerated by three different methods.…”

Section: Introductionmentioning

confidence: 99%

“…In our opinion, it is possible to create a new complex process of UO regeneration on the basis of combined technologies [12][13][14], which will include the thermooxidative regeneration and the purification of regenerated oil with urea. The resulting regenerated oil, in terms of its operational properties, will correspond to the component of the base oil, which after the introduction of additives can be reused according to its destination.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Extraction Conditions on Qualitative Composition of Vegetable Oils

Іващук¹,

Hlukhaniuk²,

Semenyshyn³

et al. 2021

ChChT

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The influence of the production conditions for rapeseed and soybean oils obtained by extraction in the system “solid – liquid” on the qualitative composition of the obtained vegetable oils has been studied. The main chemical values (acid value, iodine value, ester value, saponification value) and optical properties (refractometric refractive index and UV-Vis spectroscopy) for rapeseed and soybean oils obtained by extraction using methylene chloride as a solvent from different plant raw materials (grade of grinding is 0.2, 0.5 and 1.0 mm) and mixtures of crushed grain fractions have been determined. It has been shown that the grade of grinding of the raw material affects the quality of the obtained product.

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Integrated Regeneration Method for Used Mineral Motor Oils

Korchak¹,

Grynyshyn²,

Chervinskyy³

et al. 2021

ChChT

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The scheme of the integrated regeneration method for used mineral motor oils (UMMO) has been developed, according to which M-10DM and NORMAL 15W40 used oils were regenerated. A study on changes in physico-chemical properties, qualitative and elemental composition was carried out, and a mathematical model of the process was built. The further applications of the obtained products were proposed. Based on the obtained results, the technological scheme and flow chart of UMMO integrated regeneration were developed, and the process material balance was calculated.

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Thermooxidative Regeneration of Used Mineral Motor Oils

Cited by 8 publications

References 4 publications

Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

Influence of Water on Noncatalytic Oxidative Desulfurization of High-Sulfur Straight-Run Oil Fractions

Influence of Extraction Conditions on Qualitative Composition of Vegetable Oils

Integrated Regeneration Method for Used Mineral Motor Oils

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