煤与混合废塑料共热解固体产物中氯的赋存形态及在燃烧时的释放特性  

Occurrence mode of chlorine in solid products from co-pyrolysis of coal and waste plastic and its emission characteristic during combustion

作　　者：李震[1] 刘泽常[1] 赵莹[1] 侍玉苗[1] 

机构地区：[1]山东科技大学化学与环境工程学院

出　　处：《燃料化学学报》2006年第6期660-664,共5页Journal of Fuel Chemistry and Technology

基　　金：山东省自然科学基金(Y2002B13)

摘　　要：通过红外光谱、热重-质谱及燃烧-水解实验,研究了煤与废塑料共热解固体产物中氯的赋存形态及在燃烧过程中氯的释放特性。结果表明,温度低于600℃热解的半焦中存在有机氯化合物;600℃以上热解的半焦(或焦炭)中氯主要以无机盐类存在。燃烧过程中氯的释放率与燃烧温度,煤与废塑料共热解的温度以及共热解时废塑料的加入量有关。燃烧温度越高,氯的释放率越大,900℃燃烧时,氯的释放率都在94%以上;在同一温度燃烧时,热解温度越高,氯的释放率越低。400℃热解的半焦最高释放率达99.86%,而1 000℃热解的焦炭的最高释放率为94.35%。The occurrence mode of chlorine in solid products from co-pyrolysis of coal and waste plastic was studied by IR and TG-MS. In addition, the emission characteristic of those solid products during combustion was studied. The results indicates that when co-pyrolysis temperature is below 600 ℃, there are some organic as well as inorganic chlorine compounds in coke; when the temperature is above 600 ℃, there is only inorganic one in the coke. The emission ratio of chlorine is relative to combustion temperature, the co-pyrolysing temperature as well as the percentage of PVC. The emission ratio of chlorine increases with the rising temperature of combustion. When the combustion temperature is 900 ℃, the emission ratio is up to 94%. On the contrary, the emission ratio is lower for the solid product from higher co-pyrolysis temperature as the combustion temperature is the same. The highest chlorine emission ratio from pyrolysis at 400 ℃ is 99.86%, but that from 1 000 ℃ pyrolysis is 94.35 %.

关 键 词：混合废塑料(WP) 氯 赋存形态 燃烧 释放特性 

分 类 号：X784[环境科学与工程—环境工程]