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世界的煤炭资源丰富,约占整个有机矿物燃料储量的80%,估计到本世纪末世界煤炭的年产量将达到43亿吨。电力系统是煤炭的主要用户,大多数发达国家电力系统的耗煤尾都占其本国煤产量的一半以上。由于大量地采用煤发电,所以粉煤灰的排景很大。据估计目前每年的排量已超过4亿吨,而在今后相当长一段时间内将会持续增长。表1是各国粉煤灰的目前排放情况及本世纪末的预测排放量。大量的粉煤灰给各同的环境带来了严重的污
The world’s coal resources are abundant, accounting for about 80% of the total organic fossil fuel reserves. It is estimated that by the end of this century, the world’s annual coal output will reach 4.3 billion tons. The power system is the main user of coal, and the coal consumption of power systems in most developed countries accounts for more than half of its coal output. Due to the large number of coal power generation, the fly ash has a large number of rows. It is estimated that the current annual discharge has exceeded 400 million tons and will continue to grow for a long time to come. Table 1 shows the current emissions of fly ash in various countries and the predicted emissions at the end of this century. A large amount of fly ash brought serious pollution to the same environment