The use of Protodiakonov and Hardgrove methods to determine the effect of coal quality on its grinding ability.

The factors affecting the mechanical strength of coal and coal charges, deviations of the crushing capacity coefficients' actual values of coal charges from their calculated values, and the possibility of categorizing coal in relation to the degree of its resistance to crushing have been explored. The dependence permitting satisfactory precognition of the HGI value of the coal charge placed on the data of the crushing capacity coefficients of its ingredients was settled. The effect of the grinding ability of coal on its quality indicators, namely the degree of metamorphism, petrographic and elemental composition has been examined in this article.

Modeling of Coke Distribution in a Dry Quenching Zone.

Herein, a method for the coke dry quenching (CDQ) process has been proposed and its optimization has been carried out, which will minimize the disadvantages of this process. This optimization was carried out to develop a technology for uniform coke distribution in the quenching chamber. A model of the real charging device for quenching coke from the Ukrainian enterprise PrJSC "Avdiivka Coke" was developed, and several shortcomings of its operation were shown.

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

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 m under the following conditions: 180-200 °C; 2.5-3.