HZSM-5催化条件下反应温度对热解油品质影响规律  

Effect of reaction temperature on pyrolysis oil quality over HZSM-5 catalyst

作　　者：李萍 王丽红[2] 司慧[1] 王一青 LI Ping;WANG Lihong;SI Hui;WANG Yiqing(School of Technology,Beijing Forestry University,Beijing 100083,China;Shandong Research Center of Engineering and Technology for Clean Energy,Shangdong University of Technology,Zibo 255091,Shandong,China)

机构地区：[1]北京林业大学工学院,北京100083 [2]山东理工大学山东省清洁能源工程技术研究中心,山东淄博255091

出　　处：《化工进展》2018年第9期3379-3385,共7页Chemical Industry and Engineering Progress

基　　金：北京市科技计划(Z161100001316004);国家自然科学基金青年项目(51406109)

摘　　要：在酸性分子筛HZSM-5催化条件下,以玉米秸秆粉为原料,考察了反应温度对热解油品质的影响。在自制流化床热裂解装置上,选取了5种反应温度(450℃、500℃、550℃、600℃及650℃),进行催化热裂解实验,探究热解油含水率、pH和化学组分的变化规律。结果表明:在HZSM-5催化剂作用下,热解油含水率与pH随反应温度线性增加,酸性随着含水率的升高而减弱(pH增大);热解油中酸类、酚类、酯类及醇类相对含量比酮类、醛类及糖类受反应温度影响更加明显;在HZSM-5催化剂与物料质量比1∶10,反应温度为500℃时,热解油品质较好,腐蚀性低、稳定性高,酚类物质种类丰富、相对含量高。研究结果为HZSM-5催化条件下反应温度调控、改善热解油品质提供了一定的科学依据,有利于热解油后续高值化、环保化利用。The effect of reaction temperatures on the quality of pyrolysis oil was investigated over acidic HZSM-5 zeolite,using corn stalk powder as raw material.In the self-made fluidized bed pyrolysis device,five reaction temperatures(450℃,500℃,550℃,600℃and 650℃)were tested in the catalytic pyrolysis experiments to study the moisture content,pH and chemical composition of pyrolysis oil.The results showed that,under the action of HZSM-5 catalyst,the moisture content and pH of pyrolysis oil increased linearly with the reaction temperature,and the acidity decreased with the increase of water content(pH increased);the content of phenols,esters and alcohols was more sensitive than that of ketones,aldehydes and sugars by the reaction temperature;under the conditions of HZSM-5 catalyst and material mass ratio of 1∶10,the reaction temperature was 500℃,oil quality was in a good state,corrosive low,high stability,rich phenolic species and high relative content.The results provided a scientific evident that the reaction temperature controlled and improved the quality of pyrolysis oil over HZSM-5 catalyst,which will be beneficial to the subsequent high-value and environmental protection utilization of pyrolysis oil.

关 键 词：生物质 流化床 热解油 催化作用 反应温度 组分分析 

分 类 号：TK6[动力工程及工程热物理—生物能]