Formaldehyde is produced from the oxidation of methanol in a reactor, through the reaction: 2CH2OH(g) + O2(g) 2H2CO (9) +2H20 (9) Ah = -313,06 kJ/mol The reactor has two feeds, one of which contains pure methanol and the other is fed with air (assume 79% N2 and 21% 02, molar). The diagram below shows the system parameters. The reactor is designed for 68% conversion of the limiting reactant. Based on this information, determine: 100 mol CH OH/min 25 C k] min n (mol/min) 250C 600 mol/min 0,79 N 0,21 0 40C a) The percentage of excess reactant. b) The degree of advance and the composition of the output of the reactor (complete). c) The rate of heat transferred by the reactor per minute. MK = 39,098 u MMn = 54,938 u M1,0 = 18,0153 u MC= 35,45 u Mar(79%N2,21%02) * 29,0 u Mn = 14,007 u MH = 1,008 u Mo = 15,999 u MC = 12,011 u Ms = 32,06 u M Na = 22,99 u MHe = 4,003 u R = 8,3145 LkPa -1.mol-1 R = 8,3145 m. Pa K-1.mol-1 1 lb = 453,59 g kg.m.s-2 = N kg. m.s-2 = 1 1bar = 100 kPa kJ/s = kW Heat capacity and enthalpy of formation kJ Cp (T in C) for the constants : Cp = A +BT+CT2 + D 13 molec A x103 Bx10 Cx108 Dx1012 A; (kJ/mol) g 28,94 0,4147 0,3197 -1,965 1 75,4 0,0 0,0 0,0 -285,83 H2O g 33,46 0,688 0,7604 -3,593 -241,81 HCO g 34,28 4,268 0,0 -8,694 -115,9 CH4 g 34,31 5,468 0,3661 -11,00 -74,85 C2H5OH 1 158,8 0,0 0,0 0,0 -277,63 1 75,86 16,83 0,0 0,0 CH3OH -238,6 g 42,93 8,301 -1,83 -1.965 -201,2 N2 g 29,0 0,2199 0,5723 -2,871 0,0 02 g 29,1 1,158 -0,6076 1,311 0,0 Reference state at 25C and I atm, the Table should be used as 4x103 = 28.94 for air, for example. Equations = = p m v2 Ek = 2 A = (T, p) + X ni i - 2 ni = , . - , . n reacting X= n feeding out in AU + AEK +AEp = Q - W Ep = mgh ni = (ni), E vis out 117 = Cp + + , = Q W, Cp = Cv+R ni in Exi = - ni stoichiometric ni stoichiometric an = CV aTv