乙酸乙酯法竹材木质素分离技术研究  

STUDY ON TECHNIQUES FOR SEPARATING LIGNIN FROM BAMBOO BY ETHYL ACETATE

作　　者：廖俊和[1] 罗学刚[1] 

机构地区：[1]西南科技大学,四川绵阳621010

出　　处：《林产化工通讯》2004年第4期19-21,共3页Journal of Chemical Industry of Forest Products

基　　金：国家高新技术研究发展计划(863计划)资助项目(2002AA322050)

摘　　要：在一定的温度、压力下,利用乙酸乙酯溶解竹材中的木质素,乙酸乙酯通过蒸馏回收后,可以反复利用;而得到的高纯度木质素是重要的化工原料,整个过程形成一个封闭循环系统,基本上无三废排放。研究结果表明:乙酸乙酯浓度为80%,液固比为10∶1,反应温度155℃下保温3h,木质素的分离效果最佳。A technology used ethyl acetate as cooking liquor for bamboo was studied in the paper.The effects of the concentration of cooking liquor,liquor-to-solid ratio,the maximum temperature of cooking,time at maximum temperature on cooking were discussed systematically.The results indicate that the optimum conditions to separate lignin from bamboo are:concentration of ethyl acetate 80%,liquor-to-solid 10∶1,cooking at temperature 155 ℃ for 3 h.

关 键 词：乙酸乙酯法 竹材 木质素 分离技术 

分 类 号：X793[环境科学与工程—环境工程]