在高6000 mm、直径300mm的循环流化床上进行了含水率为79%的湿污泥与煤/石油液化气(LPG)的混烧试验.试验结果表明:无论用煤还是LPG作为辅助燃料,试验都能在设定的工况条件下稳定运行;向炉内加入石灰石的量达到钙硫摩尔比为3.4:1时,二氧化硫和氯化氢的排放达标,脱硫效率和脱氯效率分别为75%和94%;在试验中,烟气中NOx排放、烟气中汞含量和二恶英类排放都不超标;试验产生的飞灰含碳量低,飞灰中痕量元素的浸出毒性不超标;计算表明,如果利用余热干燥污泥和预热空气可有效地减少辅助燃料的消耗量.
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