Recovery of Sizing Agent by Gas Sparging Ultrafiltration

以氣體分散式超過濾回收漿料

鄭東文(Tung-Wen Cheng) ； 潘帥宇(Shai-Yu Pan)

《Journal of the Chinese Institute of Chemical Engineers》 32卷5期 (2001/09) Pp. 431-436

https://doi.org/10.6967/JCICE.200109.0431

摘要

本研究主要以實驗操作探討使用多通道薄膜進行聚乙烯醇(PVA)溶液超過濾時，通入氣體及加裝氣體分散器對回收聚乙烯醇之影響。實驗結果顯示當超過濾操作於低液體流速下，氣體之加入可促進其濾速；加裝氣體分散器可增進氣體於溶液中之分散而更進一步促進濾速。在多通道薄膜模組中，氣體能均勻分散於各通道愈形重要。本研究中顯示以通氣超過濾回故聚乙烯醇時, 30μm孔洞之氣體分散器最有助於降低過濾阻力而增加濾速。

並列摘要

Effects of gas introduction and the addition of a gas distributor on ultrafiltration of PYA solution in a multi-channel membrane module were investigated experimentally in this work. Experimental results show that the introduction of gas enhances the permeate flux of ultrafiltration operated at a lower liquid velocity. The addition of a gas distributor can improve the sparging of gas in the liquid stream and further enhance the permeate flux. A well distribution of gas between the channels is important in a multi-channel membrane module. The use of a 30μm pore size gas distributor is effective in reducing the filtration resistance and increasing the penne ate flux of PYA recovery by ultrafiltration.

並列關鍵字

Ultrafiltration ； Gas sparging ； Gas distributor ； PYA solution ； Recovery