中国煤中氟燃烧排放特征与排放限值

为了确定中国煤中氟燃烧捧放特征和捧放限值，通过大样本测试与统计，得到了中国煤中氟含量的分布特征；通过典型电站锅炉、工业锅炉和流化床锅炉的煤、飞灰、底灰样品的采样测定，提出了煤中氟在燃烧产物中的总量分配模式，得到中国不同炉型燃煤氟捧放基本特征；比照大气污染物综合捧放标准和工业窑炉大气污染物捧放标准的规定，初步得到了中国燃煤氟化物排放限值和超标煤种的比例。结果表明：比照大气污染物综合捧放标准（GB16297-1996）和工业窑炉大气污染物排放标准（GB9078-1996）中对氟化物捧放限值的规定，中国煤在各种燃烧设备的燃烧过程中，大部分煤种的氟含量是超标的，若在燃烧过程中不采取相应措施，将会对环境造成一定程度的大气氟污染。

Fluorine emission characteristics and limitation quantity of fluorine contents in Chinese coals during coal combustion

On the basis of sample measurement and statistics technique, the paper obtains the distribution characteristics of fluorine in Chinese coal, presents the distribution pattern of fluorine in coal, flying ash, bottom ash and flue gas, and gains the basic emission characteristics of fluorine in different types of furnaces such as electric power plant boiler, industrial boiler and the fluized bed boiler during coal combustion. According to China national standards GB16297-1996 and GB9078-1996, the paper obtains the limitation quantity of fluorine contents and proportion of fluorine content exceeding the limit in Chinese coals during coal combustion in different types of furnaces. Experimental results indicate that the fluorine content for greater part of Chinese coal exceeds China national standards GB16297-1996 and GB9078-1996 during coal combustion process in different types of combustion equipment. If we don't take appropriate measures, it will cause the atmospheric fluorine pollution to a certain extent.