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HW3 - Department of Chemical Biochemical Engineering...

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Department of Chemical & Biochemical Engineering Rutgers, The State University of New Jersey 98 Brett Road Piscataway, NJ 08854 14:155:201 Chemical Engineering Analysis I Homework Assignment 3 (due 9/25/08) 1. As part of a gasohol manufacturing process, a mixture of 10 wt% ethanol and 90% water is distilled to yield a product stream consisting of 60 wt% ethanol and a waste stream with a lower ethanol content. The mass flow rate of the feed stream is 1000 kg/h and the ratio of the feed stream to product stream mass flow rates is 10:1. (a) Draw and label a flowchart of this process, and do the degree-of-freedom analysis. (b) Find the mass flow rate and composition (component mass fractions) of the waste stream, and the mass flow rate of the product stream. 2. The flowchart below represents a continuous, steady state process in which no reaction occurs. The components in each stream are as indicated. (1) Pure A
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