Split_00025 - 9.23 (cont'd) b. Basis : 1000 kg CaCO3 fed...

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9- 25 b. c. Basis : 1000 kg CaCO 3 fed 10.0 kmol CaCO 3 CaCO s) CaO(s) + CO g) 2CO + O 2CO 32 22 (( 10 kmol CaCO 3 25 o C Product gas at 900 o C 200 kmol at 900 o C n 2 (kmol CO 2 ) n 3 (kmol N 2 ) 0.75 N 2 n 4 (kmol CO) 0.020 O 2 0.090 CO 0.14 CO 2 n 1 [kmol CaO(s)] 10 kmol CaCO react kmol CaO 3 ⇒= n 1 10 0 . n 2 014 200 100 4 46 =+ + = (. ) ( ) . kmol CaCO react 1 kmol CO 1 kmol O kmol O react 2 kmol CO 1 kmol O kmol CO 2 2 2 n 3 0 75 200 150 == ( . )( ) kmol N 2 C balance (10.0)(1) + (200)(0.09)(1) + (200)(0.14)(1) = 46(1) + kmol CO :( ) . nn 44 11 0 0 References : Ca(s), C(s), O g), N g) at 25 C D out in out in 31 2 23 24 4 ˆ ˆ Substance (mol) (mol) (kJ/mol) (kJ/mol) ˆ CaCO 10.0 CaO 10 587.06 CO 28 350.56 46 350.56 ˆˆ CO 18 10 ˆ O4 . 0 N 150 150 n n H H H HH H −− 3 2 Table B.1 oo f C a C O ( s ) Table B.1, Table B.8 o 1f C O ( g ) C O Table O CaCO (s, 25 C) : ( ) 1206.9 kJ/mol ˆ CO(g, 900 C) : ( ) (900 C) ( 110.52 27.49) kJ/mol
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