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8339805 
Meetings & Symposia 
Combined pre-concentrator/recovery column design for ethanol dehydration process 
Arifin, S; Chien, IL 
2007 
Houston, TX 
2007 AIChE Spring National Meeting 
English 
Ethanol dehydration process is important in producing high-purity ethanol from renewable biomass resources. The optimal design flowsheet to produce high-purity ethanol via heterogeneous azeotropic distillation is presented. A classical example of ethanol dehydration system is to use benzene as entrainer to aid the separation. However, because benzene is a known carcinogen, the design concept is demonstrated using cyclohexane or n-hexane as entrainer. This is an abstract of a paper presented at the AIChE Spring National Meeting (Houston, TX 4/22-27/2007). 
Design and control; Ethanol dehydration; Heterogeneous azeotropic distillation; Pre-concentrator column; Recovery column