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(一)燃烧部分:1.燃料:美国煤的分布是:西部为10500Btu/1b,含水量低于1%,挥发分20%的烟煤。中西部为10000Btu/1b,含硫4～5%,含灰20%年代近些的烟煤。南部是含硫低于1%的典型褐煤,仅近几年在美国才开始利用。北部与加拿大相邻地区,是高挥发分、年代最早的褐煤。目前美国国内燃煤电站主要是用烟煤,因此南部地区电站用煤存在北煤南运问题。灰的特性温度用IT、ST、HT、FT 四种表示:
(A) Combustion: 1. Fuel: The distribution of coal in the United States is: bituminous coal with a moisture content of less than 1% and a volatile content of 20% in the west of 10500Btu / 1b. Midwest for the 10000Btu / 1b, sulfur 4 ~ 5%, containing 20% of bitter ash bituminous coal in recent years. The south is a typical lignite with less than 1% sulfur, only used in the United States in recent years. Adjacent to the North and Canada, is the highest volatile, oldest lignite. At present, the domestic coal-fired power station in the United States mainly uses bituminous coal, so that there exists the problem of the north-south coal transportation of coal in power stations in the southern region. Gray characteristic temperature with IT, ST, HT, FT four said: