Abstract
To use widespreadly the waste of coals and oils processing in the great and the small-scale power generation, the key parameter, which is sectional constancy of promising organic coal-water fuels (OCWF), was studied. The compo-sitions of OCWF from brown and bituminous coals, filter cakes, used motor, turbine and dielectrical oils, water-oil emul-sion and special wetting agent (plasticizer) were investigated. Two modes of preparation were considered. They are with homogenizer and cavitator. It was established that the constancy did not exceed 5–7 days for the compositions of OCWF with brown coals, and 12–15 days for that compositions with bituminous coals and filter cakes. The injection of used oils in a composition of OCWF led to increase in viscosity of fuel compositions and their sectional constancy.
Highlights
In the first half of the XXI century it is predicted the enhancement of the role of coal in power engineering
It was established that the constancy did not exceed 5–7 days for the compositions of organic coal-water fuels (OCWF) with brown coals, and 12–15 days for that compositions with bituminous coals and filter cakes
The injection of used oils in a composition of OCWF led to increase in viscosity of fuel compositions and their sectional constancy
Summary
In the first half of the XXI century it is predicted the enhancement of the role of coal in power engineering This is due to its large reserves and sufficiently intensive depletion at oil and deposits. The works [2, 3] describe the experimental investigations in determining the constancy of water-coal suspensions with adding different kinds of plasticizers as mazut, sodium humate, carboxymethylcellulose and lignosulphonate. It was established in [2, 3] that the constancy of suspensions with adding carboxymethylcellulose and lignosulphonate does not exceed 20 days [1], with mazut not more than 10 days [2]. Applying the sodium humate as a reagent-plasticizer allowed producing the coal-water suspensions with spatial reticulatus pattern which is not broken down during 30 days [2]
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