Efficient recovery of ultrafine catalysts from oil/water/solid three-phase system by ceramic microfiltration membrane

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• 作者：Yang Zou ; Hong Jiang ; Huanxin Gao ; Rizhi Chen
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：33
• 期：8
• 页码：2453-2459
• 全文大小：789 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220
• 卷排序：33

文摘

A submerged ceramic membrane filtration system was constructed for the filtration of oil/water/solid three-phase mixture, where hexane acted as the oil phase and beta zeolite as the solid phase. The effects of the phase composition and transmembrane pressure on the filtration performance of ceramic membrane were investigated. The liquid composition in the feed and transmembrane pressure greatly affected the filtration rate and the proportion of oil/water in the permeate. Only aqueous phase passed through the membrane at lower pressures, both water and oil phases could permeate through the membrane with a lower water yield at higher pressures, and the lower water content in the feed promoted the earlier discharge of oil. The hydrophilic nature of ceramic membrane should be responsible for the filtration behavior. A combined process applying low pressure for water permeation and high pressure for oil permeation was proposed for the filtration of oil/water/solid three-phase mixture, and an efficient separation of oil/water/solid three phases was achieved.KeywordsUltrafine CatalystsRecoveryOil/Water/Solid Three-phaseCeramic MembraneFouling