Quantification of deposit formation rates as functions of operating conditions and fraction of biomass fuel used in a converted PC boiler (100 MW)
- Univ. of Umeaa (Sweden)
- Aabo Akademi Univ., Turku (Finland). Dept. of Chemical Engineering
Statistically designed experiments were carried out to study the potential effects of operating parameters on the extent of slagging, fouling and sulphur retention in a 100 MW PC boiler burning a combination of wood powder and oil. The influence of primary air, burner air distribution (secondary/tertiary air), secondary air (upper and lower burners), over fire air (east, west and rear), flue gas recirculation, fuel distribution, load and fraction of biomass fuel used were evaluated using first a screening design and then a face-centered composite design (CCF). Polynomial models were deducted from statistical analysis of the experiments. The general results from the study are that wood powder in combination with oil can be used in a safe way with relatively small amounts of deposits formed. The dominating influential factor was the fraction of biomass fuel used, where an increase resulted in somewhat higher sulphur retention but a slightly greater fouling. However, chemical analysis of samples collected during the tests did not indicate any severe corrosion tendencies and the fuel combination has been successfully used for more than two years now, without any ash related operational problems.
- Research Organization:
- Engineering Foundation, New York, NY (United States)
- OSTI ID:
- 305660
- Report Number(s):
- CONF-9507274-PROC.; ISBN 0-306-45376-2; TRN: IM9906%%340
- Resource Relation:
- Conference: Engineering Foundation conference on applications of advanced technology to ash-related problems in boilers, Waterville Valley, NH (United States), 16-21 Jul 1995; Other Information: PBD: 1996; Related Information: Is Part Of Applications of advanced technology to ash-related problems in boilers. Proceedings; Baxter, L. [ed.] [Sandia National Labs., Livermore, CA (United States)]; DeSollar, R. [ed.] [Central Illinois Public Service, Springfield, IL (United States)]; PB: 675 p.
- Country of Publication:
- United States
- Language:
- English
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