蒸馏-超滤法处理杨木自催化乙醇法蒸煮废液的研究

林产化学与工业 ›› 2008, Vol. 28 ›› Issue (04): 93-98.

蒸馏-超滤法处理杨木自催化乙醇法蒸煮废液的研究

崔鑫, 周景辉, 杨瑞丰

大连工业大学化工与材料学院;辽宁省制浆造纸工程重点实验室, 辽宁大连, 116034

收稿日期:2007-08-23 修回日期:1900-01-01 出版日期:2008-08-30 发布日期:2008-08-30

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

CUI Xin, ZHOU Jing-hui, YANG Rui-feng

College of Chemistry and Material, Dalian Polytechnic University;Liaoning Province Key Laboratory of Pulp and Paper Engineering, Dalian 116034, China

Received:2007-08-23 Revised:1900-01-01 Online:2008-08-30 Published:2008-08-30

摘要/Abstract

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(M_r)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.

关键词: 杨木自催化乙醇法, 超滤, 污染阻力, 截留率

Abstract: 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, M_r 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.

Key words: auto-catalyzed ethanol-water pulping of aspen, ultra-filtration, contamination resistance, retain rate

中图分类号:

TQ351
TS74

崔鑫;周景辉;杨瑞丰. 蒸馏-超滤法处理杨木自催化乙醇法蒸煮废液的研究[J]. 林产化学与工业, 2008, 28(04): 93-98.

CUI Xin;ZHOU Jing-hui;YANG Rui-feng. Study on Treatment of Auto-catalyzed Ethanol-water Pulping Waste Liquor of Aspen by Distillation-ultrafiltration[J]. , 2008, 28(04): 93-98.

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