垃圾衍生燃料掺混污泥共热解特性及动力学分析

发布时间：2018-03-09 00:10

  本文选题：垃圾衍生燃料　切入点：污泥　出处：《化工进展》2017年10期 　论文类型：期刊论文

【摘要】：利用热重-红外联用分析仪(TG-FTIR)研究了垃圾衍生燃料(RDF)、污泥及混合热解的反应动力学和气体产物析出特性。研究结果表明,RDF与污泥混合热解过程存在协同作用。当污泥的掺混比例为50%时,整个热解过程表现为促进作用,且在500~1000℃温度段的促进效果最为明显。采用Coats-Redfern法对热解过程进行动力学分析发现,RDF与污泥混合热解反应在低温段(240~380℃)和高温段(670~740℃)符合2级反应规律,而在中温段(430~540℃)符合1级反应规律;相对于RDF单独热解,RDF掺混污泥共热解的活化能明显降低。FTIR分析发现,RDF掺混污泥共热解对CO_2和CO的析出影响不大,对CH_4的产生有明显促进作用。同时,共热解也导致HCl、NH_3和HCN等污染物析出增加。本研究结果可为RDF和污泥共热解工艺的开发与设计提供数据支撑。
[Abstract]:TG-FTIRs were used to study the reaction kinetics and gas product precipitation characteristics of waste derived fuel RDF, sludge and mixed pyrolysis. The results showed that there was a synergistic effect between RDF and sludge in the process of pyrolysis. When the mixing ratio of sludge is 50, The whole process of pyrolysis takes on a promotive effect, The kinetic analysis of the pyrolysis process with Coats-Redfern method showed that the mixed pyrolysis reaction between RDF and sludge at low temperature stage (240 鈩，

本文编号：1586143