Fundamental study of ash formation and deposition: Effect of reducing stoichiometry. Quarterly report No. 2, 1 July 1993--30 September 1993
- PSI Technology Co., Andover, MA (United States)
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
- Arizona Univ., Tucson, AZ (United States)
- Kentucky Univ., Lexington, KY (United States)
The technical objectives of this project are: To identify the partitioning of inorganic coal constituents among vapor, submicron fume, and fly ash products generated during the combustion of pulverized coal under a variety of combustion conditions. Fuel lean and fuel rich combustion conditions will be considered. To identify and quantify the fundamental processes by which the transformations of minerals and organically-associated inorganic species occur. Emphasis will be placed on identifying any changes that occur as a result of combustion under sub-stoichiometric combustion conditions. To incorporate the effects of combustion stoichiometry into an Engineering Model for Ash Formation based upon the understanding developed in (a) and (b). When completed, this model wig predict the particle size and chemical composition distributions of ash formed during the combustion of pulverized coal under a broad range of conditions. The work discussed in this report highlights the accomplishments of the second quarter of this two year project. This includes the final selection of coals by PSI PowerServe, the results of initial in-situ XAFS combustion measurements by the University of Kentucky, a review of the status of ash formation and deposition models by MIT, modeling of iron behavior during coal combustion by the University of Arizona, preliminary work on the redistribution of minerals within char during the early stages of combustion by PSI PowerServe, and the incorporation of a char fragmentation mechanism into the ash formation model by PSI PowerServe.
- Research Organization:
- PSI Technology Co., Andover, MA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-93PC92190
- OSTI ID:
- 10117726
- Report Number(s):
- DOE/PC/92190-T2; ON: DE94005786; BR: AA3535000
- Resource Relation:
- Other Information: PBD: Nov 1993
- Country of Publication:
- United States
- Language:
- English
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