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Question: question flash drum 1000kgsecond of a mixture of ethanolwater is...

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Question flash drum 1000kg/second of a mixture of ethanol─water is to be separated in a flash drum at 101.3kpa. the feed contains 40 mole % ethanol

1) what is the maximum vapour equilibrium composition

2) what is the minimum vapour equilibrium composition

3) what is are the equilibrium compositions if 2/3 of the feed is vapourised Equilibrium data

T °C

Xethanol

Yethanol

100

0

0

95.5

0.019

0.170

89

0.0721

0.3891

86.7

0.0966

0.4375

85.3

0.1238

0.4704

84.1

0.1661

0.5089

82.7

0.2337

0.5445

82.3

0.2608

0.5580

80.7

0.3965

0.6122

79.7

0.5198

0.6599

78.7

0.6763

0.7385

78.41

0.7472

0.7815

78.15

0.8943

0.8943

78.15

1

1

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