欢迎访问《林产化学与工业》,

林产化学与工业 ›› 2015, Vol. 35 ›› Issue (5): 143-148.doi: 10.3969/j.issn.0253-2417.2015.05.023

• 研究报告 • 上一篇    下一篇

纳滤分离甲基葡萄糖苷和甘油水溶液

解则安, 赵丽丽, 李露, 刘仕伟, 于世涛   

  1. 青岛科技大学 化工学院, 山东 青岛 266042
  • 收稿日期:2014-09-25 出版日期:2015-10-25 发布日期:2015-10-24
  • 通讯作者: 于世涛,教授,博士生导师,主要从事天然资源利用、精细化工;E-mail:yushitaoqust@126.com E-mail:yushitaoqust@126.com
  • 作者简介:解则安(1989—), 男, 山东日照人,硕士生,主要从事精细化工研究工作

Separation of Methyl Glucosides and Glycerol Aqueous Solution by Nanofiltration

XIE Ze-an, ZHAO Li-li, LI Lu, LIU Shi-wei, YU Shi-tao   

  1. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • Received:2014-09-25 Online:2015-10-25 Published:2015-10-24

摘要: 以甲基葡萄糖苷和甘油水溶液为模拟生物质液化油水溶液,采用纳滤膜对其进行分离。通过单因素试验,考察了各操作参数对NF400~600卷式纳滤膜分离模拟生物质液化油的影响,确立了较优纳滤工艺条件:操作压力0.4 MPa,总进料浓度(甘油与甲基葡萄糖苷质量之比为3:1)10 g/L,操作温度45 ℃。此时,膜通量为48.6 L/(m2·h),甲基葡萄糖苷截留率为95.4%,甘油透过率为81.0%;以阻力叠加模型为原型,探索了纳滤中膜通量与操作工艺参数的数学模型,得到J的公式为J=0.625ΔP/(0.005 28+3.37×10-4ΔP0.017 7C0.901)。经验证试验表明该模型的拟合效果较好,平均相对误差小于6%,最大相对误差小于10%。

关键词: 甲基葡萄糖苷, 甘油, 纳滤, 膜分离

Abstract: Nanofiltration membrane was used to separate simulative biomass liquefaction oil solution consisting of glycerol and methyl glucosides(Meg). The effects of the parameters on NF400-600 spiral-wound nanofiltration membrane separation process were examined during the separation of glycerol and methyl glucosides. The optimum nanofiltration conditions established by single factor test were operating pressure 0.4 MPa, initial concentration 10 g/L, operating temperature 45 ℃. Under the above conditions, the permeate flux was 48.6 L/(m2·h), the retention ratio of methyl glucosides was 95.4%, and the penetration ratio of glycerol was 81.0%. Resistance model was used as the prototype to explore the mathematical models between membrane flux and operating parameters in the process of nanofiltration. The formula of J was J=0.625ΔP/(0.005 28+3.37×10-4ΔP0.017 7C0.901). The results of verification test showed the fitting effect of model agreed well with the average relative error < 6% and maximum relative error < 10%.

Key words: methyl glucosides, glycerol, nanofiltration, membrane separation

中图分类号: