Anthracite firing design for central stations: Ignition and emissions aspects
The most successful technology for firing pulverized anthracite coals in central station steam generators has accumulated more than 12,000 MWe of ordered capacity worldwide, over half of which is already operational. These units burn coals with less than 14% volatile matter. A recent contract is the 2,100 MWe Yangcheng Power Plant, which will fire a southeast Shanxi anthracite having only 5% volatile matter. Foster Wheeler`s technology ensures self-ignition by integrating, in a double-arch fired, water-wall furnace: (1) partial refractory coverage of the walls, (2) venting of cold primary (coal transport) air, (3) hot gas entrainment at the beginning of the jet-flame. Fuel systems applied to anthracite coals will be reviewed, including the one for the ongoing Hanfeng project in Hebei, which consists of two 660 MWe arch-fired units. Alternative means to improve ignition will also be presented. In addition, emissions from anthracites are characterized, including the effect of an over-fire air design suitable for arch-fired furnaces.
- OSTI ID:
- 324665
- Report Number(s):
- CONF-970931-; TRN: IM9911%%362
- Resource Relation:
- Conference: 14. annual international Pittsburgh coal conference and workshop: clean coal technology and coal utilization, Taiyuan (China), 23-27 Sep 1997; Other Information: PBD: 1997; Related Information: Is Part Of Fourteenth annual international Pittsburgh coal conference and workshop: Proceedings; PB: [1500] p.
- Country of Publication:
- United States
- Language:
- English
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