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Influence of the shape of soaring particle based on coal-water slurry containing petrochemicals on ignition characteristics

This paper examines the laws of stable ignition of organic coal-water slurry containing petrochemicals (CWSP). CWSP is based on the filter cake of coal and scavenge oil. The experiments are performed for individual CWSP particles soaring in a special setup. The temperature and velocity of an oxidizer flow are varied between 500-1200 K, and 0.5-3 m/s. The dimensions (longitudinal and transverse) of particles range are from 0.5 mm to 5 mm. The study indicates how the shape of a fuel particle (sphere, ellipsoid, and polyhedron) influences its ignition characteristics (delay time, minimum temperature, modes, stages). Based on the experimental results, the paper explains why the surface configuration of particles influences the conditions of heat transfer with an oxidizer. The results obtained for soaring particles are compared with the results for fixed CWSP particles having different surface configurations (sphere, ellipsoid, and polyhedron). In general, the study may contribute to the expansion of the fuel resource base. The experimental data may be used for the development of the technologies of burning CWSP prepared by recycling traditional fuels. As a result of this study, several recommendations for the practical application of research results are made.
PAPER REVISED: 2017-03-25
PAPER ACCEPTED: 2017-03-25
  1. Zasypkin, I. M., et al., Systems of ignition and combustion stabilization for water-coal fuel, Thermal Science, 16 (2012), 4, pp. 1229-1238
  2. Wilczyńska-Michalik, W., et al., Composition of coal combustion by-products: The importance of combustion technology, Fuel Processing Technology, 124 (2014), pp. 35-43
  3. Murko, V. I., et al., Investigation of the spraying mechanism and combustion of the suspended coal fuel, Thermal Science, 19 (2015), 1, pp. 243-251
  4. Jianzhong, L., et al., Pilot-scale investigation on slurrying, combustion, and slagging characteristics of coal slurry fuel prepared using industrial waste liquid, Applied Energy, 115 (2014), pp. 309-319
  5. Glushkov, D. O., et al., Influence of organic coal-water fuel composition on the characteristics of sustainable droplet ignition, Fuel Processing Technology, 143 (2016), pp. 60-68
  6. Glushkov, D. O., et al., Minimum temperatures for sustainable ignition of coal water slurry containing petrochemicals, Applied Thermal Engineering, 96 (2016), pp. 534-546
  7. Kontorovich, A. E., et al., Long-term and medium-term scenarios and factors in world energy perspectives for the 21st century, Russian Geology and Geophysics, 55 (2014), 5-6, pp. 534-43
  8. Coal Information, International Energy Agency, Luxembourg, 2015
  9. BP Statistical Review of World Energy, BP, London, England, 2015
  10. Zhao, H., et al., Breakup and atomization of a round coal water slurry jet by an annular air jet, Chemical Engineering Science, 78 (2012), pp. 63-74
  11. Tu, Y., et al., Method for evaluating packing condition of particles in coal water slurry, Powder Technology, 281 (2015), pp. 121-128
  12. He, Q., et al., The utilization of sewage sludge by blending with coal water slurry, Fuel, 159 (2015), pp. 40-44
  13. Umar, D. F., et al., Effect of dispersing and stabilizing additives on rheological characteristics of the upgraded brown coal water mixture, Fuel Processing Technology, 90 (2009), 4, pp. 611-615
  14. Khodakov, G. S., et al., Coal-slurry fuel, Solid Fuel Chemistry, 39 (2005), 6, pp. 12-27
  15. Khodakov, G. S., Coal-water suspensions in power engineering, Thermal Engineering, 54 (2007), 1, pp. 36-47
  16. Red'Kina, N. I., et al., Coal fuel slurry for internal combustion engines, Solid Fuel Chemistry, 47 (2013), 5, pp. 306-314
  17. Gajewski, W., et al., Analysis of cyclic combustion of solid fuels, Fuel, 88 (2009), 2, pp. 221-34
  18. Kijo-Kleczkowska, A., Combustion of coal-water suspensions, Fuel, 90 (2011) 2, pp. 865-77
  19. Valiullin, T.R., et al., Low temperature combustion of organic coal-water fuel droplets containing petrochemicals while soaring in a combustion chamber model, Thermal Science, Online First. 10.2298/TSCI151215221V
  20. Kuznetsov, G. V., et al., Numerical simulation of ignition of particles of a coal-water fuel, Combustion, Explosion and Shock Waves, 51 (2015), 4, pp. 409-415
  21. Syrodoy, S. V., et al., The influence of heat transfer conditions on the parameters characterizing the ignition of coal-water slurry particles, Thermal Engineering, 62 (2015), 10, pp. 703-707
  22. Belošević, S., et al., Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants, Applied Thermal Engineering, 74 (2015) 102-110
  23. Glushkov, D. O., et al., Numerical research of heat and mass transfer during low-temperature ignition of a coal particle, Thermal Science, 19 (2015), 1, pp. 285-294