REVIEW OF WORKS ON THE PREPARATION OF COAL WATER FUEL AND ITS COMBUSTION IN BOILERS

  • S. V. Alekseenko Institute of Thermophysics named after S.S. Kutateladze SB RAS, Akademika Lavrentiev Ave., 1, Novosibirsk, Russia
  • L. I. Maltsev Institute of Thermophysics named after S.S. Kutateladze SB RAS, Akademika Lavrentiev Ave., 1, Novosibirsk, Russia
  • I. V. Kravchenko OOO «PROTEN-K», st. Tvardovsky, 3, Novosibirsk, Russia
  • А. А. Dekterev Institute of Thermophysics named after S.S. Kutateladze SB RAS, Akademika Lavrentiev Ave., 1, Novosibirsk, Russia; Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, Russia
  • V.А. Dekterev Institute of Thermophysics named after S.S. Kutateladze SB RAS, Akademika Lavrentiev Ave., 1, Novosibirsk, Russia; Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, Russia
Keywords: coal-water fuel (WCF), WCF preparation, WCF combustion, cavitation treatment, coal waste.

Abstract

In the process of coal enrichment, huge volumes of waste are generated, which, as a rule, are thrown into the surrounding space, polluting it. The waste may contain up to 50% carbon. Small industrial power generation, municipal boiler houses mainly use layered combustion of coal. At the same time, the carbon burnout coefficient is 50–60%, the efficiency of boilers often does not exceed 60%, and their environmental performance does not meet modern requirements. An effective way to solve the problem of coal waste disposal can be the conversion of boilers to the combustion of coal in the form of coal-water suspension (CWS). The article presents the results of the authors on the technology of preparation of water-coal fuel (WCF) and its combustion in vortex furnaces of boilers. The data on new equipment necessary for the implementation of the technology is presented. It is shown that ordinary coal, anthracite, coal sludge, as well as coal preparation waste can serve as the basis for the production of CWF. Examples of pilot-industrial application of water-coal technology are given. At the same time, the fuel burnup coefficient reaches values of the order of 95%, and the efficiency of the boilers exceeds 85%.

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Published
2021-12-26
How to Cite
Alekseenko, S., Maltsev, L., Kravchenko, I., DekterevА., & Dekterev, V. (2021). REVIEW OF WORKS ON THE PREPARATION OF COAL WATER FUEL AND ITS COMBUSTION IN BOILERS. Combustion and Plasma Chemistry, 19(4), 265-277. https://doi.org/10.18321/cpc464