oxidative desulphurization

Temperature and water effect on the oxidative desulphurization of straight-run diesel fraction with a high sulphur content

The effect of temperature and water:raw material ratio on the oxidative desulphurization of straight-run diesel fraction 553–623 K has been examined. The optimum values of temperature and diesel fuel:water ratio for the fuel containing 0.87 wt % of sulphuric compounds have been determined.

Investigation of straight-run diesel oil fractions with sulfur high content oxidative desulphurization

The article deals with desulphurization of straight-run diesel fractions by selective oxidation of sulphuric compounds with their further separation. The possibility of commercial diesel fuels production with sulphur content up to 0.2 mas % from straight-run fractions with sulphur content of 0.25–0.67 mas % has been shown.

Desulphurization and Usage of Medium-Metamorphized Black Coal. 1. Determination of the Optimal Conditions for Oxidative Desulphurization

The conditions providing proceeding of the reactions between pyrite sulphur of medium-metamorphized coal and air-steam mixture in the kinetic area have been found. Experimental-statistical mathematical model has been designed. The optimal factors of medium-coalificated coal oxidative desulphurization have been determined on its basis. Under optimal conditions two samples of coking coal have been desulphurized. These samples will be used as components of the coal charge in the production of special types of coke.

Optimization of Oxidation Desulphurization of Power-generating Coal

An experimental statistic model of power-generating coal oxidative desulphurization has been developed and its adequacy has been proved. On the basis of the proposed model the desulphurization optimal conditions for three samples of power-generating coal were determined. The low-sulphur solid fuel with the content of general sulphur of 1.0–1.5 mas % was obtained under established optimal conditions.

Effect of Coal Quality on its Desulphurization. 2. Influence of the Inorganic Matter

The effect of pyrite size and distribution character, as well as the amount of inorganic matter on the removal degree of sulphur from coal during its oxidative desulphurization and benefication has been studied. The efficiencies of oxidative desulphurization processes for different types of the initial and concentrated black coal have been compared.

Effect of coal quality on its desulphurization 1. influence of the organic matter

The desulphurization process of different coal types has been studied. The coal was treated by air-steam mixture in the fluidized-bed reactor under the conditions similar to isothermal ones. The influence of temperature and oxidant composition affecting the pyrite (which is the coal component) chemical conversion on the desulphurization efficiency has been investigated for coals with different metamorphism degree.