印刷线路板废弃物的热解与动力学实验研究

分别应用管式炉反应器和热重分析手段对印刷线路板废弃物的热解行为和热解动力学进行了实验研究。在管式炉中，研究不同的热解温度：700～950℃，对产物分布和气体成分分布的影响。实验结果表明：PCB热解气体的主要成分是H2和CO2，气体的热值较低，仅为2.09～5.41MJ/m^3，PCB不适合以气体产物为目标的能源利用方式。应用Friedman方法对PCB的热解动力学进行了研究，求得PCB的热解动力学参数分别是：表观活化能190.92kJ/mol，反应级数5.97，指前因子lnA47.14min^-1。 <hr /> A tubular furnace and thermogravimetry analysis （TGA） was used to investigate the characteristics of printed circuit＇boards （PCB） pyrolysis and its kinetics,respectively. The effect of different temperatures： 700 ～950℃ on the products distribution and gas composition of PCB pyrolysis was explored. The results indicate that the main components of the gas derived from PCB are H2 and CO2 and the gas has a lower heating value （LHV） ： 2.09～5.41 MJ/m^3. It can be concluded that PCB is not favorable for energy application directed at gas production. Friedman method was utilized to analyze the pyrolysis kinetics of PCB. The kinetic parameters obtained were： apparent activation energy 190.92 kJ/mol, reaction order 5.97 ,pre-exponential factor lnA 47.14 min^-1.

广东省环保局科技研究开发基金项目（2001-13）;广东省自然科学基金团队项目（003045）