Question

Ethylene(C2h4) enters reactors at a rate of 1 kmole per minutes at a temperature of ( 25 C )and 1 atm of pressure. A stoichiometric amount of oxygen (O2) also enters the reactor at the same temperature and pressure. Complete combustion occurs within the reactor. the combustion products pass through a heat exchanger where some heat is transfer from the gases. the gases then exit the heat exchange with a temperature of 800 K and the pressure of 1 atm. at steady state, what is the rate of heat transfer in the heat exchange? assume that there is no heat than in the heat exchange and that there is no work done. Also, assume that kinetic energy and potential energy effect are negligible.

Answer 1

Soluthion Concepti ivnty we have t Caleuwlude produts of con bu tim faim the veachor which are oing in t ket eschmpr f win Mokensv -18 30 cリ min nin Lower coloyfe value of ethylene(C2H4) y 47.2 step② if wate r is 47,2 (517%) Can, se calculated as

ectie hess 6 0 C-내

het trog in heeat 521 C 25 C 2438 Co2- Con <S t2201. k

kcal/k Fuel Gas MJKg) Gross Heating Values 33889 142 13284 55.6 12400 51.9 12020 50.3 12000 50.2 12030 50.4 11700 49 11830 49.5 11810 49.4 11580 48.5 11600 48.6 11920 49.9 11932 50 2411 10.1 Net Heating Values 28555 120 11946 50 11350 47.5 11270 Methane Ethane thylene 11000 46.1 11080 48.4 10940 45.8 10930 45.8 10900 45.8 10830 45.3 10730 44.9 10997 46 11514 48.2 2411 10.1 Natural Gas - approximately Propane Propylene n-Butane Iso-Butane Butylene-1 Iso-Pentane (liquid) LPG (average) Acetylene Carbon Monoxide

Carbon Dioxide Gas CO Temperature Specific Heat deg F) 4