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NaY Zeolite Membrane Pervaporation for Dehydration from Ethylacetate Manufacturing Process  

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)
Publication Information
Korean Chemical Engineering Research / v.43, no.3, 2005 , pp. 366-370 More about this Journal
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.
Keywords
Zeolite Membrane; NaY Zeolite; Water Separation; Pervaporation; Esterification;
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