松木屑乙二醇/甲醇复合溶剂液化及液化产物分析  

Liquefaction of pine sawdust with ethylene glycol-methanol mix solvents and reaction product analysis

作　　者：贺小亮[1,2,3,4] 蒋剑春[1,2,3,4] 姜小祥[1,2,3,4] 杨中志[1,2,3,4] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《可再生能源》2014年第11期1718-1723,共6页Renewable Energy Resources

基　　金：林业公益性行业科研专项经费项目(201204801)

摘　　要：以松木屑为原料,氢氧化钠为催化剂,乙二醇/甲醇复合溶剂为液化剂,考察了溶剂体积比(乙二醇/甲醇)、催化剂用量、液化温度、液化时间对液化转化率的影响,得到了较佳的液化条件:溶剂比(乙二醇/甲醇)50/150,NaOH用量为2 g、反应温度为320℃、液化时间为10 min,该条件下液化转化率为94.5%。利用GC-MS对液化油进行分析,结果显示,液化油组成非常复杂,主要含有烃、醇、醛、酮、酸、酯、酚类等物质。利用红外光谱对松木屑及其液化残渣和液化油进行了分析,分析表明,液化残渣中含有较多的木质素及其降解产物的缩合物,液化油中羟基含量较多。Pine sawdust was used as raw material, sodium hydroxide as catalyst, and ethylene gly- col and methanol mix solvents as liquid agent. The effects of solvent volume ratio （ethylene glycol/ methanol） ,NaOH dosage, reaction temperature and residence time on sawdust liquefaction were studied, and the optimal liquefaction conditions are as fellows： solvent volume ratio 50/150,catalyst dosage 2 g,reaction temperature 320 ℃ and residence time 10 mins, liquefaction conversion rate was 94.5%.GC-MS analysis showed that the liquid products were complicated, mainly included hydrocarbons, alcohols, aldehydes, ketones, acids, esters and phenols.The structure of sawdust, liquefied residue and liquid products were characterized by Infrared Spectrum. Results showed that residue contained much lignin and condensation compound of its degradation products, and liquid products had a higher hydroxyl content.

关 键 词：松木屑 复合溶剂 液化 产物分析 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]