Full scale measurements to validate mathematical models and to monitor the combustion behavior of bituminous and brown coal-fired boilers
In recent years, the Institute for Process Engineering and Power Plant Technology (IVD) carried out measurement campaigns on three full-scale-bituminous- and brown-coal-fired boilers between 80 and 500 MW{sub el}. One boiler was designed as a boxer firing system, configured with swirl burner, and the other two were tangentially fired with jet burner. Aim of the measurement campaigns was to evaluate the suitability of bituminous- and brown-coal-fired boilers (500 and 320 MW {sub el}) for alternative coals and their blends. To monitor changes in the combustion and emission behavior, suction probes to measure flue gas concentrations and temperatures along the furnace were inserted. Shifts in heat transfer between the radiative and convective part of the boiler were correlated with the kind of coal, the injected water mass flow in the superheater steam and the flue gas temperature. Also changes with the unburned carbon and of the NO{sub x}, SO{sub 2} and CO emission behavior were measured and correlated with coal types and their variable share. The second objective of the measurement campaigns in the bituminous-coal-fired boilers (500 MW{sub el} and 80 MW{sub el}) was the acquisition of combustion data to validate the mathematical combustion model AIOLOS, which has been successfully developed by the IVD during the last ten years. For this purpose flue-gas-concentration and temperature measurements have been carried out at IVD in the near burner zone and in front of the superheaters. Furthermore, the suitability of 3-color pyrometry, thermocouples and acoustic temperature measurement systems will be compared and discussed in this paper.
- Research Organization:
- Univ. of Stuttgart (DE)
- OSTI ID:
- 20013414
- Resource Relation:
- Conference: 24th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, FL (US), 03/08/1999--03/11/1999; Other Information: PBD: [1999]; Related Information: In: The proceedings of the 24th international technical conference on coal utilization and fuel systems, by Sakkestad, B.A. [ed.], 1091 pages.
- Country of Publication:
- United States
- Language:
- English
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