Abstract
Industrialisation is trending manufacturing revolution vector, an urgent task is to increase the energy efficiency and environmental safety of small-volume furnaces processes, which are widely applied in the agricultural industry, asphalt concrete plants, etc. In many countries, there are practically no working coal mines or open-pit mines left. However, in a number of regions, coal waste remained in the form of coal dust, ash or in the form of sludge. Utilization of coal dust by preparation of coal-water fuel (CWF) with subsequent combustion of the mixture is currently being applied as the most suitable method. The article discusses improvement of the technology for the preparation of coal-water fuel by applying the effects of hydrodynamic cavitation and adding waste from the livestock complex.
Highlights
Successful adoption fuels based on coal-water slurry (CCS) into the industry provides for preliminary work on finding the optimal conditions for obtaining CCS, working out the compositions and selecting the appropriate additives so that the resulting fuels have the physicochemical properties necessary for technological application
This paper presents the results of studies on the development of a technology for producing coal-water fuel (CWF) based on brown coals of the Kansk-Achinsk coal basin and its subsequent use as a composite fuel in low-power boilers
The processing of the captured coal dust at TPPs into cavitation water-coal fuel for subsequent combustion in low-power boilers makes it possible to increase the efficiency of fuel preparation and minimize energy consumption for its preparation
Summary
Successful adoption fuels based on coal-water slurry (CCS) into the industry provides for preliminary work on finding the optimal conditions for obtaining CCS, working out the compositions and selecting the appropriate additives so that the resulting fuels have the physicochemical properties necessary for technological application. The standard technological scheme for the production of CWF provides for the putting in of coal and industrial water; impurities in the form of additives and oil production wastes are not excluded. There are operating plants for the preparation of coal-water fuel. Beijing Coal Institute together with the company China coal technology and Engineering Group Clean Energy Co., Ltd, and specialized companies have already developed several generations of CWF preparation technology.
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