纳滤分离甲基葡萄糖苷和甘油水溶液  

Separation of Methyl Glucosides and Glycerol Aqueous Solution by Nanofiltration

作　　者：解则安 赵丽丽[1] 李露[1] 刘仕伟[1] 于世涛[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《林产化学与工业》2015年第5期143-148,共6页Chemistry and Industry of Forest Products

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%。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%.

关 键 词：甲基葡萄糖苷 甘油 纳滤 膜分离 

分 类 号：TQ35[化学工程]