蒸馏-超滤法处理杨木自催化乙醇法蒸煮废液的研究  

Study on Treatment of Auto-catalyzed Ethanol-water Pulping Waste Liquor of Aspen by Distillation-ultrafiltration

作　　者：崔鑫[1,2] 周景辉[1,2] 杨瑞丰[1,2] 

机构地区：[1]大连工业大学化工与材料学院 [2]辽宁省制浆造纸工程重点实验室,辽宁大连116034

出　　处：《林产化学与工业》2008年第4期93-98,共6页Chemistry and Industry of Forest Products

基　　金：辽宁省教育厅资助项目(20060157)

摘　　要：针对杨木自催化乙醇法蒸煮废液成分复杂,副产物价值高等特点,采用蒸馏-超滤法分离回收废液中的乙醇和木质素副产物,降低废液污染程度。实验分析了多种因素对分离回收过程的作用规律,确定了最佳的工艺条件。结果表明,在浓缩体积比值0.5、截留相对分子质量(Mr)10000、压力0.20MPa、搅拌速度600r/min、温度30℃的最优条件下,该法能有效回收废液中有用组分,并能显著降低废液污染程度。The waste liquor of auto-catalyzed ethanol-water pulping of aspen had complex components and high value of by products. Ethanol and lignin products were separated from waste liquor by distillation-ultrafiltration in order to reduce degree of waste liquor pollution markedly. The effects of different factors on the process of separation were studied to confirm optimal technical conditions. The results showed that the optimal conditions were ： volume ratio of concentration 0.5, Mr of interception 10000, pressure 0.20MPa, stirring rate 600 r/min, temperature 30 ℃. This method could recover useful components effectively and reduce degree of waste liquor pollution markedly.

关 键 词：杨木自催化乙醇法 超滤 污染阻力 截留率 

分 类 号：TQ351[化学工程] TS74[轻工技术与工程—制浆造纸工程]