乙醇-水体系在马铃薯粉中的气相吸附性能研究  

Investigation on the Vapor Absorption by Potato Powder in Ethanol-water System

作　　者：李清明[1,2] 谭兴和[1,2] 熊兴耀[2,3] 田开忠[2] 肖森文 唐艳红[1] 张艳艳[1] 

机构地区：[1]湖南农业大学食品科技学院,湖南长沙410128 [2]湖南省作物种质创新与资源利用重点实验室,湖南长沙410128 [3]湖南农业大学园艺园林学院,湖南长沙410128 [4]湖南龙山县金山实业有限责任公司,湖南龙山416800

出　　处：《酿酒科技》2009年第10期22-24,28,共4页Liquor-Making Science & Technology

基　　金：国家科技支撑计划项目(2007BAD41B03)

摘　　要：利用固定床对乙醇-水体系在马铃薯粉中的气相过程进行了研究,研究了床层加热温度、床层高度、气速、进料浓度等不同条件下马铃薯粉的吸附透过曲线。结果表明,在本固定床试验装置上,马铃薯粉对水的吸附分离能力随粒径的增大而变小,随着温度的升高而增大。吸附过程是自发进行的吸热反应,适当降低床层温度有利于吸附过程。马铃薯粉具有良好的吸附性能,可作为吸附剂制备无水乙醇。The vapor absorption by potato powder in ethanol-water system was studied by use of fixed bed.The absorption passing curves of potato powder under different bed heating temperature,bed height,gas velocity,and inlet ethanol content etc.were investigated.The results indicated that the aborption capability of potato powder to water decreased with the increase of particle size and increased with temperature rise.The absorption process is a spontaneous endothermic reaction. Accordingly, adequate drop of bed temperature is helpful for the absorption. Potato powder could be used as the absorbent for the preparation of anhydrous ethanol because it has satisfactory absorption performance.

关 键 词：乙醇 马铃薯粉 水 气相吸附 

分 类 号：TQ223.122[化学工程—有机化工]