废弃香烟过滤嘴辅助增强木质素微波解聚特性  

Enhancement of the Microwave-assisted Pyrolysis of Lignin by Adding Used Cigarette Filter

作　　者：王文亮 黄佳乐[1] 陈磊 赵兴金 马振浩 王旭彪 李新平 WANG Wenliang;HUANG Jiale;CHEN Lei;ZHAO Xingjin;MA Zhenhao;WANG Xubiao;LI Xinping(Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi’an,Shaanxi Province,710021;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi’an,Shaanxi Province,710021;The 2nd Sub-institute of Industrial Engineering,Planning and Design Institute of Forest Products Industry,National Forestry and Grassland Administration,Beijing,100010)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021 [2]轻化工程国家级实验教学示范中心(陕西科技大学),陕西西安710021 [3]国家林业和草原局林产工业规划设计院工业二所,北京100010

出　　处：《中国造纸》2020年第9期25-30,共6页China Pulp & Paper

基　　金：国家自然科学基金(31800497);国家级大学生创新创业训练计划(201910708041)。

摘　　要：木质素微波解聚存在转化效率偏低、二次反应剧烈等问题。本研究通过在木质素中添加一定比例的废弃香烟过滤嘴(UCF)颗粒来辅助增强木质素的快速解聚和调控产物组分分布。结果表明,随着UCF添加量的增大,生物油产率逐渐增加,生物炭产率呈下降趋势。与理论产率相比,UCF的加入更有利于生物油和生物炭的生成。对生物油化学成分定量分析发现,UCF的加入能够通过脱甲氧基或脱羟基作用来降低愈创木基酚类化合物的产量。当UCF添加量为60%(相对于木质素)时,对羟苯基酚类化合物(127.53 mg/g)和芳香烃类物质(22.28 mg/g)的产量达到最高。对固体产物分析发现,生物炭比表面积随着UCF添加量的增大而逐渐增加,同时UCF加入能够形成炭纤维结构并在木质素炭上附着和生长。本研究发现UCF和木质素在微波解聚过程中发生了显著的协同效应,对于木质素的高效转化和废弃资源高值化利用具有积极意义。Microwave-assisted pyrolysis of lignin exists some problems of low conversion efficiency and severe secondary reaction.In this study,used cigarette filter(UCF)particles were used to assist the fast pyrolysis of lignin and control the distribution of pyrolysis products.Results showed that with the increase of UCF adding proportion in lignin,the yield of bio oil increased gradually,and the yield of biochar de⁃creased.Compared with the theoretical yield,the addition of UCF was conducive to the generation of bio oil and biochar.The adding of UCF reduced the yield of guaiacols from lignin pyrolysis by demethylation or dehydroxylation reaction.The highest yields of P-hydroxyphenols(127.53 mg/g)and aromatic hydrocarbon(22.28 mg/g)were obtained with 60%mass ratio of UCF to lignin.The analysis of solid products showed that the specific surface area of biochar increased gradually with the increasing of the proportion of UCF in lignin.UCF could form the structure of carbon fiber and attached and grew on the surface of lignin carbon.In this study,the remarkable synergistic effect between UCF and lignin was observed in the process of microwave-assisted pyrolysis which had great significance for the conversion efficiency of lig⁃nin and the high-value utilization of waste resources.

关 键 词：木质素 微波解聚 废弃香烟过滤嘴 酚类化合物 协同效应 

分 类 号：X793[环境科学与工程—环境工程]