To absorb CH4 contained in nitrogen by using liquid ammonia. The inlet gas speed is 100 kmol/h, and the mole fraction of CH4 is 0.2%. It is intended to eliminate 98% of CH4 entering by using pure liquid ammonia as an absorbent. The absorption process operates at 253.2 K, 175 atm, where the equilibrium information of methane is yCH4 = 20 × xCH4. The total flow rate of gases and liquids is assumed to be constant within the absorption tower, and the absorption tower is filled with packing material. Find the following:
Design conditions: Operation (L/V) is set at 1.5 times (L/V)min.
a) Mole flux of liquid ammonia (L, in kmol/h)
b) the mole fraction of CH4 in outlet gases (yCH4,1, units:
%)
c) Equilibrium number of the absorption tower (valid number: 1
decimal place)
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To absorb CH4 contained in nitrogen by using liquid ammonia. The
inlet gas speed is 100...
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