Skip to main content
SpringerLink
Log in

Analysis of Cyclic Load Capability of Boilers According to Conditions of Slag-Tap Removal

  • Published:
Power Technology and Engineering Aims and scope

Abstract

Original software that makes it possible to predict the viscosity of coal slag from data on its chemical composition as applied to results of domestic measurements is presented. The predictions are more accurate than those ensured by known domestic and foreign methods. The reliability of results is increased without changing the computational procedure by widening and amending the databank. A refined algorithm and software are suggested for computing the cyclic load capability of boilers from conditions of slag-tap removal. The method is based on integral computation of heat exchange in the combustion zone. The software has been tested for TP-87 and PK-40 boilers firing Kuznetskii coals of grades SS and T and for BKZ-320-140PT boiler firing Kansko-Achinskii coals.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

REFERENCES

  1. A. N. Alekhnovich, “Computation of viscosity of slag melts and its use for analyzing the applicability of ‘foreign’ coals,” Teploenergetika, No. 12 (2003).

  2. B. C. Folkedahl and H. H. Schobert, “Viscosity modeling of coal ash and slag using neutral networks, ” in: Preprint Eng. Foundation Conf. “Impact of Mineral Impurities in Solid Fuel Combustion,” Kona, USA, Nov. 2–7 (1997).

  3. D. P. Kalmanovich and M. Frank, “An effective model of viscosity for ash deposition phenomena,” in: Proc. Conf. on Mineral Matter and Ash Deposition from Coal (1988).

  4. C. L. Senior and S. Srinivasachar, “Viscosity of ash particles in combustion systems for prediction of particle sticking,” Energy & Fuels, 9(2) (1995).

  5. A. Kondratiev and E. Jak, “Predicting coal ash slag flow characteristics (viscosity model for the Al2O3-CaO-FeO-SiO2 system),” Fuel, 80 (2001).

  6. W. L. Sage and J. B. Mcllroy, “Relationship of coal-ash viscosity to chemical composition,” J. Eng. Power Ser. A, 82(2) (1960).

  7. E. Kh. Verbovetskii and N. G. Zhmerik (eds.), Methodical Recommendations on Design of Furnace Devices for Power Boilers [in Russian], Izd. VTI-TsKTI, St. Petersburg (1966).

    Google Scholar 

  8. V. E. Maslov and A. N. Alekhnovich, “Experience in firing Kuznetskii mineral coals in TP-87 boilers, ” Energetik, No. 10 (1968).

  9. A. N. Alekhnovich, V. I. Timchenko, and I. Ya. Zalkind, “A study of heat exchange and of conditions of evacuation of liquid slag in firing of Kuznetskii coals,” Teploenergetika, No. 1 (1976).

  10. A. N. Alekhnovich and L. I. Zel', “Computational analysis of cyclic load capability of a furnace from conditions of reliable slag-tap removal” in: Abstrs. of the III All-Russia Conf. “Effect of the Mineral Part of Power Fuels on Operating Conditions of Steam Generators,” Sec. 3 [in Russian], Tallinn (1980).

  11. A. N. Alekhnovich and Yu. L. Marshak, “Analysis of cooling and hardening of films of poorly crystallizing tapped slag,” Teploenergetika, No. 12 (1978).

  12. Thermal Design of Boiler Units (Standard Method) [in Russian], Energiya, Moscow (1973).

  13. V. V. Bogomolov, N. V. Artem'eva, A. N. Alekhnovich et al., Power Coals of the Eastern Part of Russia and Kazakhstan. A Reference Book [in Russian], Izd. UralVTI, Chelyabinsk (2004).

    Google Scholar 

  14. M. M. Rubin and S. N. Eglit, “Results of a study of operation of BKZ-320-140PT-1 boilers with half-open furnaces firing Irsha-Borodinskii and Nazarovskii coals” in: Power Utilization of Coals of the Kansko-Achinskii Basin [in Russian], Energiya, Moscow (1970).

    Google Scholar 

  15. I. A. Maksimov, B. P. Ustimenko, U. T. Kulatov et al., “A study of different variants of reconstruction of the furnace of the BKZ-320 boiler of the Irkutsk cogeneration plant-6 with the help of a firing model” in: Combustion of Power Coals of Kazakhstan in Boiler Furnaces [in Russian], ENIN, Moscow (1987).

    Google Scholar 

  16. L. I. Pugach, Problems of Harmonious Use of Kansko-Achinskii Coals at Thermal Power Plants [in Russian], Izd. NEI, Novosibirsk (1992).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Ural Thermal Engineering Laboratory, Russia

    A. N. Alekhnovich

Authors
  1. A. N. Alekhnovich
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Elektricheskie Stantsii, No. 6, June 2005, pp. 16 – 21.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Alekhnovich, A.N. Analysis of Cyclic Load Capability of Boilers According to Conditions of Slag-Tap Removal. Power Technol Eng 39, 228–233 (2005). https://doi.org/10.1007/s10749-005-0313-5

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10749-005-0313-5

Keywords

Search

Navigation