MASS TRANSFER - ANSWER 4.2 : (a) S / G minimum = (0.086957

MASS TRANSFER - EXAMPLE 4.2 : In a non-dilute absorber, graphical method is used to represent the process. In an X - Y coordinate system, X-axis represents mole of carbon dioxide / mole of water and Y axis represents mole of carbon dioxide / mole of nitrogen. The inlet gas stream consists of 8 mol % of carbon dioxide in nitrogen. (a) Find the S / G minimum as a slope that goes through the point (0, 0.0304) and (0.0000488, 0.086957). (b) Find the actual slope of operating line when it is 1.5 times the S / G minimum! (c) Find the value of x for inlet gas stream when y = 1640 x, y is mole fraction of carbon dioxide in nitrogen.

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Answer Posted / kangchuentat

MASS TRANSFER - ANSWER 4.2 : (a) S / G minimum = (0.086957 - 0.0304) / (0.0000488 - 0) = 1160. (b) S / G actual = 1.5 (1160) = 1740. (c) Let x = y / 1640 = 0.08 / 1640 = 0.0000487805. The value of y corresponds to 8 % or 0.08. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

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