Elementary Principles 417 - 9.55 (cont'd) 10% excess O2 O 2...

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9- 65 b. 10% excess O 2 2 O fed=1.1(2000 mol/s)=2200 mol/s C balance: ( ) ( ) ( )( ) ( ) ( ) 44 3 3 3 32 1000 mol CH s 1 mol C mol CH 100 1 1 10 1 81.8 mol CO s 10 818 mol CO s nn n n =+ + = ⇒= ±± ± ± H balance : () ( ) ( ) ( ) 2 1000 4 100 4 2 1800 mol H O s = O balance : ( ) ( )( ) ( )( ) ( )( ) 22 2 2200 2 2 81.8 1 818 2 1800 1 441 mol O s + + = References :C s, H g , O g , N g at 25 C 222 a f bg D out in out in 4 2 2 2 2 ˆ ˆ Substance mo ls kJ mol kJ mol CH 1000 74.85 100 57.62 O 2200 2.24 441 11.72 N 8272 2.19 8272 11.15 CO 81.8 99.27 CO 818 377.2 H O 1800 228.63 n n H H −− ± ± for CH T) for others Table B.1 Table B.2 Table B.8 f o 4 f o i ² ² ² ² ( H H C dT H H p T B B B z Δ Δ 25 Energy balance: 5 out in ˆˆ 5.85 10 kJ s (kW) ii Q H nH =Δ = =−
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