week 5 305-2

week 5 305-2 - Stage Calculations Internal Balances...

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Unformatted text preview: Stage Calculations Internal Balances Sections 4.1-4.2 STARTED WITH EXTERNAL BALANCES ChE 305 Example 4-1 Q C D= 3333.333 kg/hr H V = 330 kcal/kg 94.88708 kmol/hr MW V= 379.5483 x D = 0.8 wt fract EtOH 46.07 0.610019 mol fract Water 18.016 h D = 60 kcal/kg RR= 3 L= 284.6612 F= 10000 kg/hr L/V= 0.75 453.6618 kmol/hr T F = 40 C P= 1 kg/cm 2 Z= 0.3 wt fract q= 1 0.143539 mol fract 738.323 h F = 30 kcal/kg 379.5483 1.945268 Q R B= 6666.667 kg/hr 358.7747 Kmol/hr x B = 0.05 wt fract 0.020167 mol fract h B = 90 kcal/kg Q C =-3600000 kcal/hr Q R = 4100000 kcal/hr = L = V = V L INTERNAL BALANCES 75 80 85 90 95 100 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Temp., C Composition, L&V Temperature-composition for Ethanol-water Liquid Vapor ( ) ( ) ( ) 2 2 2 1 1 1 1 1 1 1 1 2 2 1 1 2 2 1 2 : : : : : : y H H x h h Enthalpy y x x m Equilibriu Dh h L Q H V Energy x L Dx y V Component L D V Overall Balances D c D = = = + = + + = + = OCEEE Sets T 1 ( ) ( ) ( ) 3 3 3 2 2 2 2 2 2 2 2 3 3 2 2 3 3 2 3 : : : : : : y H H x h h Enthalpy y x x m Equilibriu Dh h L Q H V Energy x L Dx y V Component L D V Overall Balances D c D = = = + = + + = + = Sets T 2 ( ) ( ) ( ) 1 1 1 1 1 1 1 1 : : : : : : + + + + + + + + = = = + = + + = + = j j j j j j j j j D j j c j j j j D j j j j y H H x h h Enthalpy y x x m Equilibriu Dh h L Q H V Energy x L Dx y V Component L D V Overall Balances Sets T j ( ) ( ) ( ) 1 1 1 1 1 1 1 1 1 1 1 : : : : : : + + + + + + + + + + + = = = + = + + = + = f f f f f f f f f f f B R f f f f B f f f f y H H x h h Enthalpy y x x m Equilibriu H V Bh Q h L Energy y V Bx x L Component V B L Overall Balances Sets T f+1 ( ) ( ) ( ) k k k k k k k k k k k B R k k k k B k k k k y H H x h h Enthalpy y x x m Equilibriu H V Bh Q...
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This note was uploaded on 11/07/2011 for the course CHE 305 taught by Professor Rowell during the Fall '09 term at Drexel.

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week 5 305-2 - Stage Calculations Internal Balances...

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