Split_00069 - 9.57(cont'd Summary of component mass flow...

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9- 69 b. c. d. Summary of component mass flow rates Stack gas at 600 F, 1 atm 2978 lb - moles CO h 131000 lb CO h 1352.5 lb - moles H O h 24400 lb H O h 56.4 lb - moles SO h 3620 lb SO h 943 lb - moles O h 30200 lb O h 17150 lb - moles N h 48100 lb N h lb fly ash h 2m 2 2 2 2 2 m ° 4130 674,350 lb m stack gas/h Check : 50000 21710 29 674350 2540 +⇔ + bg b g in out 679600 676900 in out (0.4% roundoff error) Total molar flow rate 22480 lb - moles h at 600 F , 1 atm (excluding fly ash) ⇒= ° ° V 22480 lb - moles 359 ft STP R h1 l b - m o l e R ft h 3 3 a f 1060 492 174 10 7 . References : Coal components, air at 77 ° F nH ii in ± 0 Stack gas: nH ± . . = −° ⋅° 674350 lb 7.063 Btu 1 lb - mole F h lb - mole F lb Btu h m m 600 77 28 02 890 10 7 Slag: nH ± . = ⋅° 2540 lb 0.22 Btu F hl b F Btu h m m 600 77 292 10 5 Energy balance: QH n H n H n H == ° + ΔΔ coal burned
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