中国燃煤汞排放量估算

The estimation of mercury emission from coal combustion in China.

研究了中国煤炭的汞含量及主要用煤行业燃煤汞排放因子．结合有关统计资料计算了我国各行业和各地区燃煤汞的排放量．全国煤炭的平均汞含量为０ ．２２ ｍ ｇ／ ｋｇ ，主要燃煤行业中大气汞排放因子为６４ ．０ ％ ～７８ ．２ ％ ．１９９５ 年全国燃煤共排放汞３０２ ．９ｔ ，其中向大气中排汞量为２１３ ．８ｔ ，排入灰渣及产品中的汞为８９ ．０７ｔ ．１９７８（１９９５ 年全国燃煤大气汞排放量的年平均增长速度为４ ．８ ％ ，累积排汞量为２４９３ ．８ｔ ；北京、上海、天津等超大城市排汞强度较高；燃煤汞排放是中国面临的重要环境问题．

In this paper,the mercury emission of coal combustion and mercury content of coal were studied in China. The average mercury content of coal is 0.22mg/kg.By founding monitor program,the mercury emission factors of coal-fired boiler were measured,which were from 64.0% to 78.2%. Basing on other data,the total amount of mercury emission from coal combustion was 302.9 tons in 1995, including 213.8 tons in atmosphere and 89.07 tons in ash and cinder. From 1978 to 1995 mercury emission had been increasing at average 4.8% per year and 2493.8 tons mercury had been emitted into atmosphere during the process of coal combustion;and the mercury emission intensity is high in Beijing,Shanghai and Tianjin.Mercury emission from coal combustion is a important environmental problem in China.