Separation Process Engineering, 5th Edition

Answers to Selected Problems

Chapter 2

2D1.	a. y = 0.77, x = 0.48
	b. V = 600.0 and L = 900.0
	c. V/F = 0.25, y = 0.58
	d. F = 37.5 kmol/h
	e. D = 1.94 ft. Use 2.0 ft. L ranges from 6.0 to 10.0 ft.
	f. V/F = 0.17
	g. x = 0.756, V = 16.18 mol/h, L = 33.82 mol/h
2.D2.	Hint: Work backward (start with stage 2).
	a. (V/F)1 = 0.148
	b. x1 = 0.51, y1 = 0.78, x2 = 0.25, y2 = 0.62
2.D9.	Tdrum ~ 88.2°C, xE = 0.146, yE = 0.617, V = 326.9
2.D15.	zethane = 0.4677, znC4 = 0.2957
2.D18.	Tdrum ~ 65.6°C, V/F ~ 0.57
2.D19.	Tdrum ~ 57.0°C, V/F = 0.293
2.F2.	x3 = 0.22, y3 = 0.461

Chapter 3

3.D2.	L/D = 2.77
3.D3.	V¯ = 1532.4 kg/h
3.D5.	a. B = 76.4 kg/min, D = 13.6 kg/min, Qc = −15,357 kcal/min, QR = 3635.3 kcal/min ...