欢迎访问《生物质化学工程》,

生物质化学工程 ›› 2012, Vol. 46 ›› Issue (4): 42-46.

• 研究报告 • 上一篇    下一篇

乙醇-水体系在马铃薯粉吸附剂上的 气相吸附过程研究

李清明1,3, 谭兴和1,3, 苏小军2, 熊兴耀2, 田开忠2   

  1. 1. 湖南农业大学 食品科技学院, 湖南 长沙 410128;2. 生物质醇类燃料湖南省工程实验室, 湖南 长沙 410128;3. 食品科学与生物技术湖南省重点实验室, 湖南 长沙 410128
  • 收稿日期:2011-09-07 修回日期:1900-01-01 出版日期:2012-07-30 发布日期:2012-07-30

Study on Vapor Adsorption Process of Ethanol-water System on Potato Powder

LI Qing-ming1,3, TAN Xing-he1,3, SU Xiao-jun2, XIONG Xing-yao2, TIAN Kai-zhong2   

  1. 1. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China;2. Hunan Engineering Laboratory for Alcohol Fuels from Biomass, Changsha 410128, China;3. Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, China
  • Received:2011-09-07 Revised:1900-01-01 Online:2012-07-30 Published:2012-07-30

摘要: 利用固定床吸附柱(Φ25 mm×900 mm)对乙醇-水体系在马铃薯粉吸附剂中的气相吸附过程进行了研究,研究了不同条件下乙醇-水体系在马铃薯粉中吸附的透过曲线。结果表明,在本试验条件下,生产能力和透过时间随温度降低、粒径变小、进料流量降低和床层高度增加而增大。在乙醇-水体系进料流量为 3 mL/min 左右、床层温度 80℃、吸附剂粒径245~350 μm、床层高度 700 mm 和进料乙醇体积分数 94.5% 条件下,每 1 000 g 马铃薯粉吸附剂可脱水得到无水乙醇 205.1 g。马铃薯粉吸附性能良好,再生容易,具备作为生物质吸附剂制备无水乙醇的潜力。

关键词: 马铃薯粉, 乙醇-水, 气相吸附

Abstract: Experiments have been carried out in a fixed bed adsorption column (Φ 25 mm×900 mm) packed with potato powder. The effects of different adsorption process conditions were investigated. The results showed that under the experimental conditions, the production capacity and breakthrough time of potato for alcohol-water systems increases when the temperature falls, reduce, the size of adsorbent become smaller and the bed depth increases. The adsorption capacity was 205.1g/1 000 g adsorbent at 80℃, inlet ethanol concentration 94.5% (volume fraction), the size of adsorbent 245~350 μm, the bed depth 700 mm and vapor superficial velocity 3 mL/min. The potato powder is a potential biomaterial for removing water from ethanol-water mixtures.

Key words: potato powder, ethanol, water-vapor adsorption

中图分类号: