RECONSTRUCTION OF THE AERO-MIXTURE CHANNELS OF THE PULVERIZED COAL PLANT OF THE 100 MW POWER PLANT UNIT

Abstract

After the last revitalization of thermal power block of 100 MW in TPP "Kostolac A", made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture channels. Deposition phenomenon manifested itself in places ahead of spherical compensators in the direction of flow of pulverized coal to the burners, due to unfavorable configuration of these channels. Coal dust deposited in the channels dried and spontaneously combusted, causing numerous damage to channels and its isolation as well as the frequent stoppage of the operation for necessary interventions. The paper presents the original solution of reconstruction of aero-mixture channels which prevented deposition of coal dust and its eventual ignition. In this way the reliability of the mill plant is maximized and higher availability of boiler and block as a whole is achieved.

Keywords

Dates

  • Submission Date2010-04-12
  • Revision Date2010-05-20
  • Acceptance Date2010-05-25

DOI Reference

10.2298/TSCI100412013I

References

  1. Lj. Brkić, T. Živanović, D. Tucaković: Steam Boilers Thermal Calculation, Faculty of Mechanical Engineering, Belgrade, 2006, (In Serbian)
  2. OAO Sibenergomash: Summary table calculations results of steam boiler BKZ 200-100 PP, Kostolac, 03.0904.098 РРT (In Russian) 1999
  3. Lj. Brkić, T. Živanović: Steam Boilers, Faculty of Mechanical Engineering, University of Belgrade, Belgrade, 2006 (In Serbian)
  4. T. Živanović: Pulverized coal system with fan mills, Monograph, Faculty of Mechanical Engineering, University of Belgrade, Belgrade, 2000 (In Serbian)
  5. Aerodynamic calculation of boiler plants (Normative method), Leningrad, (In Russian) 1977
  6. Idelchik I.E.: Handbook of hydraulic resistance, Springer, ISBN 0-89116-284-4
  7. Volkovinsky B. A. et al: Mill - Fan, Energiya, Moscow, (In Russian) 1971
  8. T. Živanović, Lj. Brkić, D. Tucaković: Selection of mill plant for 100 MW block in PP Kostolac, Faculty of Mechanical Engineering, Belgrade, Study (In Serbian) 2004
  9. T. Živanović Lj. Brkić, D. Tucaković: Pulverized coal system calculation, Faculty of Mechanical Engineering, University of Belgrade, Belgrade, 2005 (In Serbian)
  10. M. Gulič et al: Fan mill calculations, ZEP, Belgrade, (In Serbian) 1982
  11. T. Živanović, D. Tucaković, Lj. Brkić, V Ivanović: Solutions for aero-mixture channel reconstruction for greater reliability and availability of pulverized plant system of block A1, Innovation Center of Faculty of Mechanical Engineering, Study (In Serbian), Belgrade, 2008
  12. M. Bogner, D. Vuković: Problems of mechanical and hidromechanical operations, Faculty of Mechanical Engineering, Belgrade, 1991 (In Serbian) Thermotehnical testing of boilers A1 and A2 of block A1 in TPP KOstplac; Vinča - TENT, Belgrade, 2007 (In Serbian)
Volume 15, Issue 3, Pages663 -676