Elementary Principles 198

# Elementary Principles 198 - 6.43 a. Basis: 100 mol feed gas...

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6- 32 6.43 a . Basis: 100 mol feed gas 100 mol 0.10 mol NH /mol 3 0.90 mol G/mol n 1 (mol H O( )) 2 l G = NH -free gas 3 n 2 (mol) y A (mol NH /mol) 3 y W (mol H O/mol) 2 y G (mol G/mol) n 3 (mol) x A (mol NH /mol) 3 x A (mol H O/mol) 2 (1 – ) in equilibrium at 10°C(50°F) and 1 atm Abs orber Composition of liquid effluent . Basis : 100 g solution Perry , Table 2.32, p. 2-99: T = 10 o C (50 o F), ρ = 0.9534 g/mL 0.120 g NH 3 /g solution 12 0 17 0 88 0 18 0 . (. , . g NH g/1mol) = 0.706 mol NH g H O g/1 mol) =4.89 mol NH 3 3 2 3 mole% NH aq), 87.4 mole% H O(l) 32 12 6 .( Composition of gas effluent p Tx p p y y yy y A Perry A W GA W NH o HO total 3 2 3 2 psia Table 2 - 23 F, psia Table 2 - 21 psia mol NH mol mol H O mol mol G mol = == ⎯= = U V | W | =− − = 121 50 0126 0155 14 7 121 14 7 0 0823 0155 14 7 0 0105 10 9 0 7 . .. . ./. . ./ . . . bg G balance: 100 mol b
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