化工学报Issue(8)：2889-2895,7.DOI:10.3969/j.issn.0438-1157.2014.08.005
吸收膜蒸馏的传热传质过程
Heat and mass transfer in osmotic distillation
摘要
Abstract
Considering that the temperatures between the both sides of the membrane are quite close or even the same in osmotic distillation system, there is no phase inversion heat loss in this process. It is possible to achieve a lower energy consumption of membrane distillation process. Therefore, the study on seawater desalination by osmotic distillation was carried out. Firstly, the osmotic distillation experiments were proceeded with the seawater as feed solution, the glucose solution and calcium chloride solution as extractant in seawater desalination. The result showed that the membrane flux of calcium chloride solution as extractant was higher than that of glucose solution. Then the heat and mass transfer model of osmotic distillation was founded, based on which the calculation was carried out. The result showed that the model predictions were in good agreement with the experimental data. Thirdly, The impact of glucose solution or calcium chloride solution as extractant to mass transfer coefficient and polarization phenomenon was calculated. The result revealed that the mass transfer coefficient of calcium chloride solution as extractant is 1.7 times of glucose solution and the reduced value of the steam pressure difference by polarization phenomenon is a quarter of that for the latter.关键词
吸收膜蒸馏/吸收液/海水淡化/膜通量/传热/传质/膜Key words
osmotic distillation/extractant/seawater desalination/membrane flux/heat transfer/mass transfer/membrane分类
化学化工引用本文复制引用
王攀,赵洁,陈华艳,吕晓龙..吸收膜蒸馏的传热传质过程[J].化工学报,2014,(8):2889-2895,7.基金项目
国家自然科学基金项目（21176188，21106100）；高等学校博士学科点专项科研基金(20111201110004)；天津市应用基础及前沿技术研究计划项目（11JCYBJC04700，12JCQNJC05500）。@@@@supported by the National Natural Science Foundation of China (21176188,21106100), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20111201110004) and the Project of the Research in Application Base and Cutting-Edge Technologies of Tianjin (11JCYBJC04700,12JCQNJC05500) （20111201110004）
