HW03.docx - HW03 Due Jan 30 by 2pm Points 100 Available after Jan 23 at 2pm Reading Wankat 3.0 – 3.4*Answer in back of text Concept questions 1 Given

HW03.docx - HW03 Due Jan 30 by 2pm Points 100 Available...

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HW03 Due Jan 30 by 2pm *Answer in back of text Points 100 Available after Jan 23 at 2pm Reading: Wankat 3.0 – 3.4
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Concept questions: 1. Given a typical McCabe-Thiele diagram ( attached here , and shown below), sketch the new operating line when the following changes are made. Also describe the change in exiting vapor and liquid compositions (increase, decrease, stay the same). a) L/F increases, z 1 stays the same b) Temperature increases, z 1 stays the same c) L/F increases, temperature stays the same d) z 1 increases, temperature stays the same
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2. What are the purposes of reflux? How does reflux differ from recycle? Please give your answer in a couple of sentences.
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3. In a countercurrent distillation column at constant pressure, where is the temperature highest? Where is it the lowest? Please give your answer in a sentence or two.
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Analytical problems: 4. 2D9 * hint: assume feed is a liquid
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5. We have a liquid feed that is 19 mol% propylene, 43 mol% n-butane, and the balance n-hexane. The feed rate is 1250 kmol/h, the feed temperature is 45 °C, and
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  • Spring '18
  • Distillation, 1.0 kg, Continuous distillation, 20°C, 45 °C, 100.0 kg

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