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Split_00087 - 9.68 b 1 mol natural gas yCH 4(mol CH 4 mol...

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9- 87 9.68 b. 1 mol natural gas y n y n y n n CH 4 CO 2 C H 2 6 H O 2 C H 3 8 N 2 O 2 4 2 2 6 2 3 8 2 2 (mol CH / mol) (mol CO (mol C H / mol) (mol H O) (mol C H / mol) (mol N mol O ) ) ) Humid air n a (mol air) y wo (mol H 2 0(v)/mol) (1-y wo ) (mol dry air/mol) 0.21 mol O 2 /mol DA 0.79 mol N 2 /mol DA Basis : 1 g-mole natural gas CH (g) O (g) CO (g) H O(v) C H (g) O (g) CO (g) H O(v) C H (g) O (g) CO (g) H O(v) 4 2 2 2 2 6 2 2 2 3 8 2 2 2 + + + + + + 2 7 2 2 3 5 3 4 Theoretical oxygen 2 mol O (mol CH 1 mol CH 3.5 mol O (mol C H 1 mol C H 5 mol O (mol C H 1 mol C H 2 CH 4 4 2 C H 2 6 2 6 2 C H 3 8 3 8 4 2 6 3 8 : ) ) ) y y y + + = + ( 2 +5 CH C H C H 4 2 6 3 8 y y y 35 . ) Excess oxygen: 100 ( 2 +5 mol O xs CH C H C H 2 4 2 6 3 8 0 21 1 1 35 . ( ) . ) n y P y y y a wo = + F H G I K J + = 100 ( 2 +5 1 0.21(1 mol air Feed components ( ( ( N in product gas: = ( mol N xs CH C H C H O in N in H O in 2 N N in 2 4 2 6 3 8 2 2 2 2 2 + F H G I K J + = = = n P y y y y n n y n n y n n y n n a w a wo a wo a wo 1 35 0 21 1 0 79 1 0 . ) ) ) . ( ), ) . ( ), ) ) CO in product gas 1 mol CO (mol CH
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