燃煤污染是我国首要污染 ,尤其是高硫煤的燃烧和利用过程造成的危害比低硫煤要严重得多。燃煤产生的ＳＯ2 已使我国 4 0 %以上的地区经受了酸雨的危害 ,西南地区酸雨的频率最高达 90 %以上 ,ｐＨ值最低可达 4 0 ,对人体健康、生态环境均具危害。煤中有害物质包括无机物质和有 Coal-fired pollution is the primary pollution in our country. In particular, the harm caused by the combustion and utilization of high-sulfur coal is much more serious than that of low-sulfur coal. SO2 from coal combustion has caused more than 40% of the country’s damage to acid rain. The frequency of acid rain in southwest China is up to over 90% and the pH value is as low as 40%, which is hazardous to human health and ecological environment. Hazardous substances in coal include inorganic substances and have