[화학공학] 증류탑 Distillation Column
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- 2012.03.19 / 2019.12.24
- 35페이지 / pptx (파워포인트 2007이상)
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추천 연관자료
- 목차
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1.Objective
2.Introduction
3.Background
4.Experimental
5.Procedures
6.References
- 본문내용
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To understand the principle of laboratory distillation
To separate a binary mixture with different boiling points through fractional distillation
Practice the application of distillation devices
Measure the efficiency of distillation column
Calculate the minimum ideal plates
Superheated vapor feed(q<0)
Saturated vapor feed(q=0)
Partially vaporized feed(q=0.5)
Saturated liquid feed(q=1)
Subcooled liquid feed(q>1)
Plate Efficiency
To calculate the number of plates in a nonideal case, instead of the ideal equilibrium line.
Murphree Efficiency
yn = real vapor composition of passing through Nth plate
yn+1 = real vapor composition of passing into Nth plate
y*n = vapor composition in vapor-liquid equilibrium with the tray liquid
Procedures
9. Start the reflux pump and set the reflux ratio to 0.8 using a control knob attached to the pump.
(Reflux ratio 0.8 means the amount of flow entered in top production tank is 100% while amount of reflux flow which returned in column is 80%)
10. Start the feed pump and calculate feed supply liquid by mass balance. At that time, record the concentration of supply liquid. When feed supplies liquid by mass balance. At that time, record the concentration of supply liquid. When feed supplies liquid, it should be saturated.
11. Control the pre-heater in order to set the temperature at 50mol%-73.1 (40mol%-75.3 ).
- 참고문헌
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Apparatus
Microchronometer -http://shop.reagecon.com/b1webtools/catalog/partdetail.aspx?partno=9260187
Mass cylinder 100ml, Erlenmeyer Flask - http://rebochem.yolasite.com/general-laboratory-and-glassware.php
Specific Gravity Balance -http://www.coloradogem.com/index.php?display=gems
Reagents
http://en.wikipedia.org/wiki/Methanol
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