三种添加剂对松木屑/LDPE微波共热解研究  

Study on Co-pyrolysis of Pine Sawdust and LDPE with Three Additives by Microwave Heating

作　　者：汪娟[1] 陈明强[1] 隋倩倩[1] 杨忠连[1] 王君[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2013年第2期39-43,共5页Journal of Anhui University of Science and Technology:Natural Science

基　　金：高等学校博士学科点专项科研基金资助项目(20093415110003)

摘　　要：早期热重分析研究表明,聚烯烃热解的温度比生物质温度高,生物质和塑料的热行为是独立的。在微波加热条件下,研究了三种添加剂(海泡石、Al2O3、Fe2(SO4)3)在松木屑/LDPE质量比为10∶1的混料中进行共热解时,对共热解液相产率和化学成分的影响。通过方差分析发现,微波功率较添加剂对液相产率影响更为显著,600～1 000 W较为适宜共热解;GC-MS分析发现,海泡石抑制了愈创木酚及其衍生物的生成,但对1-羟基-2-丙酮和乙酸(酐)可实现富集,平均含量分别达20.10%和27.84%;Al2O3可使1-羟基-2-丙酮平均含量高达22.47%,而紫丁香酚及其衍生物平均含量低至1.97%;Fe2(SO4)3可促进热解产物定向转化为糠醛,平均含量最高可达15.75%。Early thermal gravimetric analysis showed that pyrolysis temperature of polyolefin is higher than bio- mass, and thermal behavior between biomass and plastic is independent. Influence of three additives - sepiolite, Al2O3 and Fe2 （ SO4 ） 3 - on the yields and chemical compositions of co - pyrolysis liquids （ bio - oil） from the pine sawdust and low -density polyethylene （LDPE） mixed at weight ratio 10：1 using microwave heating was studied. Variance analysis showed that microwave power has more significant impact than these additives and the appropriate co - pyrolysis power is between 600 and 1 000 W. The liquids were analysised by GC - MS and the experimental data showed that sepiolite decreases generation of guaiacols, but enriches relative amount of 1 - hy- droxy -2 -acetone and acetic acid （anhydride） in co -pyrolysis liquids, at 20.10% and 27.84% on average. Al2O3 maxed 1 -hydroxy-2 -acetone at 22.47% on average, and down eugenols to minimum at 1.97%. Fe2 （ SO4 ） 3 has directionality effect on 2 - furanearboxaldehyde from the co - pyrolysis products which content maxed at 15.75% on average.

关 键 词：生物能 微波热解 共热解 固体废物利用 

分 类 号：TK6[动力工程及工程热物理—生物能]