Notes on Chapter Four

4lb m 1ft 3 3841lb m 207 gal 3 unknowns n1 n2 n3 2

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Unformatted text preview: , n3 ) – 2 balances 1 DF g 0.0403 mol C3H 8 / mol b n3 mol / s 0.9597 mol air / mol b 2195 lb m n2 mol air / s g 0.0205 mol C3H 8 / mol g 0.9795 mol air / mol 0.21 mol O 2 / mol 0.79 mol N 2 / mol b. Propane feed rate: 0.0403n1 Propane balance: 0.0403n1 Overall balance: 3722 n2 c. b g 150 n1 3722 mol / s 0.0205n3 n3 7317 mol / s 7317 n2 3600 mol / s b b g g . The dilution rate should be greater than the value calculated to ensure that ignition is not possible even if the fuel feed rate increases slightly. 4- 5 4.12 a. b m kg / h g 0.960 kg CH3OH / kg 1000 kg / h 0.500 kg CH 3OH / kg 0.500 kg H 2O / kg 2 unknowns ( m, x ) – 2 balances 0 DF 0.040 kg H 2O / kg 673 kg / h b g x b kg H O / kgg x kg CH 3OH / kg 1 b. Overall balance: 1000 m 673 bg Methanol balance: 0.500 1000 2 m 327 kg / h b g xb673g 0.960 327 Molar flow rates of methanol and water: 67...
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This document was uploaded on 03/06/2014 for the course CHE 2172 at LSU.

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