聚丙烯与梧桐锯末干混合制备成型活性炭研究  

PREPARATION OF FORMED ACTIVATED CARBON WITH POLYPROPYLENE AND SAWDUST VIA DRY MIX PROCESS

作　　者：武晋州 马培勇[1] 张贤文 邢献军[1,2] 郭晓薇 Wu Jinzhou;Ma Peiyong;Zhang Xianwen;Xing Xianjun;Guo Xiaowei(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;Advanced Energy Technology and Equipment Research Institute,Hefei University of Technology,Hefei 230009,China;School of Automobile and Transportation Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学机械工程学院,合肥230009 [2]合肥工业大学先进能源技术与装备研究院,合肥230009 [3]合肥工业大学汽车与交通工程学院,合肥230009

出　　处：《太阳能学报》2019年第8期2113-2120,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51006031)

摘　　要：针对塑料及农林废弃物的处理,提出利用塑料及生物质干混合制备活性炭的方法,以达到以废治废的目的。以梧桐锯末为基体,聚丙烯塑料为填充剂,制作成型颗粒。采用K2CO3为活化剂,利用高温管式炉,研究城乡废弃物干混合制备成型活性炭工艺的可行性。通过4组独立的单因素实验阐析掺塑率、盐料比、活化温度以及活化时间对成型活性炭吸附性能的影响。研究表明:当掺塑率为5%、盐料比为2.0、活化温度为850℃、活化时间为60 min时,制备的成型活性炭具有较高的碘吸附值(1416.5 mg/g)。扫描电子显微镜(SEM)和Brunauer-Emmett-Teller比表面积测试法(BET)分析显示,成型活性炭具有发达的孔隙结构,比表面积为1738.7 m2/g,总孔容为0.958 cm3/g,平均孔径为3.1 nm。初步验证了此工艺的可行性。An activated carbon preparation method was proposed in this paper through the combination of hard template(the sycamore tree sawdust)and soft template(polypropylene plastics). To take the potassium carbonate as the activator and use the high temperature tube stove, the feasibility to get theformed activated carbon was exploredfrom urban and rural waste via dry mixed method. Theadsorptive property of formed activated carbon were investigated experimentally with single factor impact including the plastic percentage(%), salt/sawdust ratio, activation temperature(℃)and activation time(min). The study results indicate that optimal preparation conditions for formed activated carbon are 5%,2.0, 850 ℃ and 60 min, where the formed activated carbon obtains the best iodine adsorption value(1416.5 mg/g). The SEM and BET examinations show that the formed activated carbon sample has abundant pore structure and large specific surface area(1738.7 m^2/g). The total volume of the cavity is 0.958 cm^3/g and the average pore diameter is 3.1 nm, which preliminarily verities the feasibility of this technology.

关 键 词：聚丙烯 碳酸钾 活性炭 成型 孔结构 干混合 

分 类 号：TQ424.1[化学工程]