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Modification of the inlet to the tertiary air duct in the cement kiln installation

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Rotary kiln installation forms a very complex system, as it consists of various components which affect cement production. However, some problems with particle settling are encountered during operation of tertiary air installation. This paper reports on the results of a study into gas-particle flow in a tertiary air duct installation. This flow was calculated using Euler method for air motion and Lagrange method for particle motion. The results in this paper demonstrate that study focus on the tertiary air installation is a practical measure without the analysis of other processes in the rotary kiln. A solution to this problem offers several alternatives of modifying the inlet to the tertiary air duct. As a result of numerical calculations, we demonstrate the influence of geometry of a rotary kiln modification on the number of large particles transported in the tertiary air duct. The results indicate that in order to reduce large particles, rotary kiln head geometry needs to be modified, and a particle settler should be installed at its outlet.
Rocznik
Strony
517--527
Opis fizyczny
Bibliogr. 15 poz., rys., tab., wykr.
Twórcy
autor
  • Opole University of Technology, Department of Thermal Engineering and Industrial Facilities, Mikołajczyka 5, 45-271 Opole, Poland
autor
  • Opole University of Technology, Department of Thermal Engineering and Industrial Facilities, Mikołajczyka 5, 45-271 Opole, Poland
  • Opole University of Technology, Department of Thermal Engineering and Industrial Facilities, Mikołajczyka 5, 45-271 Opole, Poland
Bibliografia
  • 1. Akili H., Levy E.K., Sahin B., 2001. Gas-solid flow behavior in a horizontal pipe after a 90° vertical-to-horizontal elbow. Powder Technol., 116, 43-52. DOI: 10.1016/S0032-5910(00)00360-0.
  • 2. ANSYS Fluent, Release 15.0, ANSYS Inc.
  • 3. Borsuk G., Dobrowolski B., Nowosielski G., Wydrych J., Duda J., 2016. Numerical simulation of thermal-hydraulic processes in the riser chamber of installation for clinker production. Arch. Thermodyn., 37, 127-142. DOI: 10.1515/aoter-2016-0009.
  • 4. Borsuk G., Dobrowolski B., Wydrych J., 2006. Gas - solids mixture flow through a two - bend system. Chem. Process Eng., 27, (3/1), 645-656.
  • 5. Borsuk G., Wydrych J., Dobrowolski B., 2014. Optimization of particle settler in tertiary air duct in the cement kiln installation, In: Aktualne Zagadnienia Energetyki, Politechnika Wrocławska, 115-124.
  • 6. Fidaros D.K., Baxevanou C.A., Dritselis C.D., Vlachos N.S., 2007. Numerical modelling of flow and transport processes in a calciner for cement production. Powder Technol., 171, 81-95. DOI: 10.1016/j.powtec.2006.09.01.
  • 7. Hu Z., Lu J., Huang L., Wang S., 2006. Numerical simulation study on gas-solid two-phase flow in pre-calciner. Commun. Nonlinear Sci. Numer. Simul., 11, 440-451. DOI: 10.1016/j.cnsns.2004.07.004.
  • 8. Kuan B., Yang W., Schwarz P., 2007. Dilute gas–solid two-phase flows in a curved 90° duct bend: CFD simulation with experimental validation. Chem. Eng. Sci., 62, 2068–2088. DOI: 10.1016/j.ces.2006.12.054.
  • 9. Laín S., Sommerfeld M., 2012. Numerical calculation of pneumatic conveying in horizontal channels and pipes: Detailed analysis of conveying behaviour. Int. J. Multiphase Flow, 39, 105–120. DOI: 10.1016/j.ijmultiphaseflow.2011.09.006.
  • 10. Lederer H., 1996. A new rotary kiln burner technology. World cement, 27 (12), 45-48.
  • 11. Levy A., Mason D.J., 1998. The effect of a band on the particle cross-section concentration and segregation in pneumatic conveying systems. Powder Technol., 98, 95-103. DOI: 10.1016/S0032-5910(97)03385-8.
  • 12. Saidura R., Hossaina M.S., Islama M.R., Fayazb H., Mohammed H.A., 2011. A review on kiln system modelling. Renewable Sustainable Energy Rev., 15, 2487-2500. DOI: 10.1016/j.rser.2011.01.020.
  • 13. Wang J., Shirazi S.A., 2001. A CFD based correlation for mass transfer coefficient in elbows. Int. J. Heat Mass Transfer, 44, 1817-1822. DOI: 10.1016/S0017-9310(00)00222-2.
  • 14. Wydrych J., 2010. Comparative analysis of the methods of simulation of flow in boiler dust systems. Chem. Process Eng., 31 (4), 603-656.
  • 15. Zhou Z., Zhu H., Wright B., Yu A., Zulli P., 2011. Gas-solid flow in an ironmaking blast furnace-II: Discrete particle simulation. Powder Technol., 208, 72-85. DOI: 10.1016/j.powtec.2010.12.005
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e237d09b-9cd5-4380-85c0-e0df6f7f89ba
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