造纸黑液提取物在超临界乙醇中液化制取生物质油  

Preparation of biomass oil from paper mill black liquor by liquefaction in supercritical ethanol

作　　者：宋璐 翟佳 马中正 王鑫玉 程舒曼 王卓雅 李世帅 刘红缨[1] SONG Lu, ZHAI Jia, MA Zhongzheng, WANG Xinyu, CHENG Shuman,WANG Zhuoya, LI Shishuai, LIU Hongying(School of Chemical and Environmental Engineering, China University ofMining and Technology （Beijing）, Beijing 100083, China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《中国科技论文》2018年第6期686-691,共6页China Sciencepaper

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB214901);中央高校基本科研业务费专项基金资助项目(2009KH06)

摘　　要：针对造纸黑液提取物液化转化产率低和解聚复杂的问题,采用超临界流体技术和HZSM-5催化剂处理复杂的生物质并使其液化制备燃料。以制浆造纸黑液木质素为原料,在超临界乙醇体系中采用正交试验法进行解聚,探讨反应温度、反应时间、催化剂用量对造纸黑液提取物液化率的影响,得到最佳反应条件(温度为285℃、时间为30min、催化剂用量为0.5g),其中原料转化率为69.98%,残渣得率为30.02%。采用热重(thermogravimetry,TG)分析法研究了造纸黑液木质素的热化学特性,通过气相色谱–质谱联用仪(gas chromatography-mass spectrometer,GC-MS)、发热量分析及傅里叶变换红外光谱仪(Fourier transform infrared spectroscopy,FTIR)对解聚产物进行表征。本研究对造纸黑液木质素大分子结构解聚制备生物油提供了一定的理论依据。Aiming at the problem of low liquefaction conversion efficiency and complex depolymerization of black liquor extract,the complex biomass was treated with HZSM-5 catalyst by supercritical fluid technology and liquefied to prepare fuel.In this paper,pulping papermaking black liquor lignin was used as the raw material and orthogonal experiment method was employed to depolymerization in the supercritical ethanol system.The effects of reaction temperature,reaction time,the amount of catalyst on liquefaction efficiency of papermaking black liquor extract were investigated,and the best reaction conditions（temperature：285 ℃,time：30 min,the amount of catalyst：0.5 g）were obtained,in which the feed conversion was 69.98% and the residue yield was 30.02%.Thermogravimetric（TG）analysis was used to study the thermochemical properties of lignin from papermaking black liquor.The depolymerization products of lignin from papermaking black liquor were characterized by gas chromatography-mass spectrometry（GC-MS）,calorific value analysis and Fourier transform infrared spectroscopy（FTIR）.This study provides a theoretical basis for the preparation of biooil from the depolymerization of lignin macromolecular structure in papermaking black liquor.

关 键 词：应用化学 木质素 乙醇 超临界 生物质油 

分 类 号：TQ351[化学工程]