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Organic coal-water fuel: Problems and advances (Review)

  • Steam Boilers, Power-Plant Fuel, Burner Facilities, and Boiler Accessories
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Abstract

The study results of ignition of organic coal-water fuel (OCWF) compositions were considered. The main problems associated with investigation of these processes were identified. Historical perspectives of the development of coal-water composite fuel technologies in Russia and worldwide are presented. The advantages of the OCWF use as a power-plant fuel in comparison with the common coal-water fuels (CWF) were emphasized. The factors (component ratio, grinding degree of solid (coal) component, limiting temperature of oxidizer, properties of liquid and solid components, procedure and time of suspension preparation, etc.) affecting inertia and stability of the ignition processes of suspensions based on the products of coaland oil processing (coals of various types and metamorphism degree, filter cakes, waste motor, transformer, and turbine oils, water-oil emulsions, fuel-oil, etc.) were analyzed. The promising directions for the development of modern notions on the OCWF ignition processes were determined. The main reasons limiting active application of the OCWF in power generation were identified. Characteristics of ignition and combustion of coal-water and organic coal-water slurry fuels were compared. The effect of water in the composite coal fuels on the energy characteristics of their ignition and combustion, as well as ecological features of these processes, were elucidated. The current problems associated with pulverization of composite coal fuels in power plants, as well as the effect of characteristics of the pulverization process on the combustion parameters of fuel, were considered. The problems hindering the development of models of ignition and combustion of OCWF were analyzed. It was established that the main one was the lack of reliable experimental data on the processes of heating, evaporation, ignition, and combustion of OCWF droplets. It was concluded that the use of high-speed video recording systems and low-inertia sensors of temperature and gas concentration could help in providing the lacking experimental information.

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Authors and Affiliations

  1. National Tomsk Research Polytechnic University, Tomsk, 634050, Russia

    D. O. Glushkov & P. A. Strizhak

  2. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    M. Yu. Chernetskii

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  1. D. O. Glushkov
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  2. P. A. Strizhak
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Correspondence to P. A. Strizhak.

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Original Russian Text © D.O. Glushkov, P.A. Strizhak, M.Yu. Chernetskii, 2016, published in Teploenergetika.

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Glushkov, D.O., Strizhak, P.A. & Chernetskii, M.Y. Organic coal-water fuel: Problems and advances (Review). Therm. Eng. 63, 707–717 (2016). https://doi.org/10.1134/S0040601516100037

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