以城市污水处理厂剩余污泥为原料，制备了3种污泥基活性炭负载金属催化剂，在相同热解条件下，研究了其对产物特性的影响。利用剩余污泥热重分析（TGA）和油品分析（GC/MS）探讨了热解过程的反应机理，结果表明，热解主要发生在100~550℃之间，添加催化剂后产油率均有所提高，其中当催化剂SC-Cu的添加量为2%时，产油率由无催化剂时的20.36%提高到30.08%。此外，通过扫描电子显微镜（SEM）和氮气吸附脱附对3种负载型催化剂进行表征，结果表明，污泥表面不光滑，其形貌呈不规则孔道结构，有利于小颗粒粒子负载于其表面，两者相互作用为热解过程提供了有效的传质空间，有效增加了催化剂活性。

Three kinds of sludge-based activated carbon supported metal catalysts are prepared from residual sludge of municipal sewage treatment plant,and their effects on products characteristics of sludge pyrolysis are studied under the same pyrolysis conditions.The reaction mechanism of pyrolysis process is studied by using TGA and GC/MS.The results show that the pyrolysis mainly occurs between 100℃ and 550℃,and the oil yield increases after the addition of catalyst.If the addition amount of SC-Cu catalyst is 2%,the oil yield increases to 30.08% from 20.36% without catalyst.In addition,three kinds of catalysts are characterized by means of scanning electron microscope (SEM) and nitrogen adsorption/desorption.According to the results,the surface of the sludge is not smooth,its morphology shows irregular hole structure,which is beneficial for small particles to be loaded on its surface.The interaction between particles and hole supplies efficient mass transfer space,increasing the activity of catalyst effectively.

刘雯雯(1994-),女,硕士研究生,研究方向为污泥处理,1130081961@qq.com