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Research on model of purification of low unsaturated degree polyether polyols with membrane separation

Authors： YANG Liu1，Ma Weihua1，Qi Li2，Zhong Qin1

Units： 1. Department of Chemical Engineering，Nanjing University of Science ＆ Technology，Nanjing 210094，Jiangsu，China；

KeyWords： polyether polyols; membrane flux; concentration polarization; mathematical

ClassificationCode：

year,volume(issue):pagination： 2012,32(4):61-65

Abstract：

Flat membrane ultrafiltration was applied to purification of low unsaturated degree polyether polyols, which flat membrane prepared from polyethersulphone(PES). Crude polyether polyols were used as polyols/hexane miscella in a 1:1 proportion. Based on the studies on operating pressure and flow speed, a mathematic resistance model describing membrane flux as a function of pressure and flow rate was established, and the model parameters were got by fitting the experimental data. The resullts showed that the predicted results of membrane flux as a function were in good agreement with the experimental results well, with a relative error varying between 0.13%~14.02%, and the correlation coefficients were all around 0.99. Using this model, flux change can be predicted and the effective process parameters were prvided for the industrial purification process.

Funds：

江苏省科技成果转化专项资金项目（BA2009016）；南京理工大学自主科研专项计划资助（2010ZYTS018）

AuthorIntro：

杨柳（1987-），女，吉林梨树人，硕士生，从事聚醚多元醇方向的研究..＊联系人.

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