Question

A fuel gas that contains mole% methane and the balance ethane is burned completely with pure oxygen at °C, and the products are cooled to °C.

Suppose that the reactor is continuous. Take a basis of calculation of mol/s of the fuel gas, assume some value for the percent excess oxygen fed to the reactor (the value you choose is not going to affect the results), and calculate -Q⋅ (kW), the rate at which heat must be transferred from the reactor if the water vapor condenses before leaving the reactor and if the water remains as a vapor.

Answer 1

Fuel = 1 mol/see Chu = 6.4 mol/sec, ehhane (CH2 = 0.6mol/see 20 Reactor /> 204 Chy=0.4 nasce {Mc = 0 Gnolsee Chyto Co₂+240 Cho +70, 200, +3H₂0 - I from Stoichionery with 0.4 molsce , 2 mol/cec On reactedd Ima/see.com form! & 2 gully the formed both 0-6mreliec G Me, I tool/ce o resched, zoaVse con formal & 3000 no formal Co formed a 142230oy see Ho forord Total O, reacted a 2+ 7 2 11 mol/sen Total See 3+2 z 5 mol/sec 226.19 rollen

For 1 Product Chy 235.52k1, a46252.49KI lef Ol fed 40% extra a fed = 1.4x4 1.4 x 27.7 mol/ree On left a fed- O reacted 7.7-5.5 > 2.2 mol/sen In product co= 3onolsee O z 2.2 molsa H₂O = 5 mol/se Any reaction (7) Reautant (7) (25) Reactant Here 8, 20, as T2 =25€ Kroolk Kinolk lood mo= l kmol Chy20.0355k2 Caffe 0.05249 kJ molk molk 0.4 gol 0.0355k1 529)x(35) Tran Produrl 2509 Droon g. -Q,+Athanh 8 = -8, + Droxy Heat Capauties & = medte (ou )+(0.6x00ger mol cu si 20.228 k]

a H2O².-2011.8 los moj 2 mol snahandust 2 Reactant - 560.267 kJ/mol Foro.uno sec See For wath Heat of formation Caz-393.5 kJ Chhy -74.533 ] mol Gry = -83.8 kJ/mol for reaction EDHE -(-393-5-241-9)-(-74.533) 2-560.267x0.4 kg -224.106 kJ For reaction form = 2*(-313-5) + 3x (-24-3) -(-838) - 1428.6 kJ/mol For O.G. 6 mode -857 16 kJ 92 -0.228 – 857-16 kg 18 = - 857.388k I Sec Afther -857.388 - 204 Water cordespation 8 -1061.388 k] 2 C - Kryn: n see It water is in vapour Latent heat of laborisation of water to 2 90.8 kJ x & During condereation wahr will relare heat so g Wille be tre Heal reloce. my relare by wahn wahe vapour to condence a 25ml mox x 40.8k] sec 2-204 kJ Z Ligwa
from heat balance and mole balance all the values are calculated. And if water is condensed then it releases some amount of heat to condense.