Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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NaY Zeolite Membrane Pervaporation for Dehydration from Ethylacetate Manufacturing Process

에틸아세테이트 생산 공정의 탈수를 위한 NaY 제올라이트 분리막 투과증발

  • Ahn, Hyoseong (Department of Chemical Engineering, College of Engineering, Chungnam National University) ;
  • Lee, Hyeryeon (Department of Chemical Engineering, College of Engineering, Chungnam National University) ;
  • Lee, Yongtaek (Department of Chemical Engineering, College of Engineering, Chungnam National University)
  • Received : 2004.10.14
  • Accepted : 2005.03.17
  • Published : 2005.06.30
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Abstract

Pervaporation process using a NaY zeolite membrane was applied for separation of water generated in an esterification process as a byproduct. From the binary mixture of water and either ethyl acetate or acetic acid and the ternary mixture of water, ethanol and ethyl acetate which might be present in an esterification reaction for manufacturing ethyl acetate, water was separated by the membrane pervaporation. It was investigated how the operating parameters such as an organic concentration and a temperature affected the permeate flux and the separation factor of water. For the feed mixture of water/ethyl acetate, the total flux and the separation factor of water were observed to be $930-5,000g/m^2/hr$ and 3,700-8,000, respectively. Also it was found for ternary mixtures of water/ethanol/ethyl acetate that the total flux was $1,300-3,900g/m^2/hr$ and the separation factor was 530-1,600. A pervaporation process might be applied in an esterification process since both the total flux and the separation factor of water through the NaY zeolite membrane were shown to be very high.

에틸아세테이트를 생산하는 에스테르화 공정에서 부산물로 생성되는 물을 NaY 제올라이트 분리막 투과증발을 이용하여 선택적으로 분리하고자 하였다. 에스테르 반응 분리 공정에서 나타날 수 있는 이성분계 혼합물 및 삼성분계 혼합물로부터 물을 분리하였으며 공급되는 유기물의 농도 및 투과증발 실험 온도의 변화가 투과플럭스와 물 선택도에 미치는 영향을 고찰하였다. 물/에틸아세테이트 혼합물의 투과증발 결과 실험 농도 및 온도에 따라 NaY 제올라이트 분리막은 $930-5,000g/m^2/hr$의 총투과플럭스와 3,700-8,000의 물 선택도를 나타내었다. 물/에탄올/에틸아세테이트 삼중공비물의 경우 $1,300-3,900g/m^2/hr$의 총투과플럭스와 530-1,600의 물 선택도를 나타내었다. 본 연구를 통하여 합성된 NaY 제올라이트 분리막은 물에 대해 매우 높은 선택도와 투과플럭스를 나타내므로 에스테르화 반응 공정에 분리막 투과증발 공정을 적용할 수 있을 것으로 판단된다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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