Question

A mixture of fuel containing 0.500 mol CH4/mol, 0.340 mol C3Hg/mol, and 0.160 mol C5H12/mol at 51.0°C and 117 kPa (gauge) enters a furnace at a rate of 66.0 L/min where it reacts with 16.0% excess air. Determine the volumetric flow rate of air to the furnace in SCFM (standard cubic feet per minute) by following the steps below. Assume that the gases behave ideally. its with 16,0% excess alle What is the molar flow rate of fuel entering the furnace? Number mol fuel/ min What is the molar flow rate of CH4 entering the furnace? Number 1 mol CH / min What is the molar flow rate of C3H8 entering the furnace? Number mol C,H,/ min III 10-

Answer 1

miAua of fuel containing T- SIOC=324-1SI 34 md1. C3ne P-117 kpa fabsaude =117+1o112y = a16.3251pa At 1 STP ২२.५ +/»d Sn ideal gas eqaion Tr T2 a18.325x V 01.395 x22.4 324.15 273.15 12.33 lit/mal Vg= G6 LitImiim feed flow at total fuel gas molar flsu at of fuel entering the fuunace 66 12.33 s 353 mellmih 1 molar flow rat of Hy entering the funace O.SX 5.353 2 676 mel CHy mm )mslar flow rat of Che entring the fmnace 1.69mal (gite Min O.34x 5353 mdar tow at of GHI entoing the furance o. 8548 mel sh in O.16X S.353 17
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CHyt 20s Cog t 300 +YH0 total thertical egured (29. 676x9 + 129XS + 0.3565x8) 21.304 mol og /min 91.304 ) total thetical r Regired e lo1.us mel Ar n a.91 Vi) 16% Excess fir s used Pctual Phr floo rat (malaar) 1ol. 45 x116 17.68 mol/Ar din md 12.33 Jit/m of thr vdumehic floo 17.66x12.33 1450.98 tit/mim 1sit = o.0353 147 S1-24 9/mim Volumetic flow aate of Ahr (sCF)