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Problem 2 CH 25 C Products 150 C Air 100 25 C Cooling water Methane (CH4) is oxidized with air to...
Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C...
Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C and is mixed with the air. The products of combustion leave this reactor at 0.9 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables. CH4 Combustion 25℃ CO, HO 1600 K 30%acess 25 C The amount of carbon dioxide...
CaCO 25°C C (i.e., carbon) 25°C Flue gases 320°C Kiln Air 25°C CaO, CaCO3 950°C A vertical kiln i...
CaCO 25°C C (i.e., carbon) 25°C Flue gases 320°C Kiln Air 25°C CaO, CaCO3 950°C A vertical kiln is charged with pure limestone (CaCO3) and pure coke (not that kind... pure carbon), both at 25°C. Air (21% 02,79% N2) is blown at the bottom. The reaction between 02 in air and coke provides the heat for decomposition of the CaCO3. Combustion reaction: C02g) > CO2(e) Limestone decomposition reaction: CaCO3) -> Ca0s)+ CO2(g Coke is burned with 20% excess air. The...
Nitric oxide (NO) can be produced by partially oxidizing ammonia (NH3) with oxygen via the following...
Nitric oxide (NO) can be produced by partially oxidizing ammonia
(NH3) with oxygen via the following reaction:
2NH3 + 2.5O2 = 2NO + 3H2O (1)
Ammonia can also react with oxygen via the following
reactions:
2NH3 + 1.5O2 = N2 + 3H2O (2)
2NH3 + 3.5O2 = 2NO2 + 3H2O (3)
Ammonia is fed to a reactor at 25 °C and 500 kg/h. Dry air (21
mol % O2, 79 mol % N2) enters at 8000 kg/h. Eighty percent (80%)...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel and air enter the combustion chamber at 250 C and atmospheric pressure, determine (a) Air fuel ratio (b) the dew point of the products and (c) the heat transfer from the combustion process for 1 kmole of CH4 Substance hr, 700 K kJ/kmol he, 298 K kJ/kmol kJ/kmol CH4 02 N2 CO2 H2O -74,850 8.682 8,669 -393,520 9,364 -241,820 9,904 21,184 20,604 27,125 24,088...
78. Natural gas is primarily methane, CH4, and is used to heat homes. A typical home...
78. Natural gas is primarily methane, CH4, and is used to heat homes. A typical home is approximately 2000 ft^2 and the ceilings are 8 ft high. How many grams of methane are required to raise the temperature in the home from 40 degree F to 70 degree F? How many grams of CO2 does this reaction produce? The following data may be helpful: The heat capacity of air is 1.01 J/g.K and the enthalpy of combustion of methane is...
AH CO t H20 AR CHA -398-5 t CHAG) 203 6 + 74-5 2AI Question 3...
AH CO t H20 AR CHA -398-5 t CHAG) 203 6 + 74-5 2AI Question 3 The combustion of methane is given by: CH (g)+ 2 O2 (g)-CO2 (g) + 2 H20 (g) The flue gases leave the reactor at 800°C. (a) Calculate the heat of reaction at 800°C? (5 point) 5c0 -8K Substance AHP298.15 (kJ/mol) C,IR=A A CH4 -74.5 1.13 3.64 CO2 -393.5 5.46 -241.8 3.47 OH (b) Calculate the amount of heat needed (kJ) to raise the temperature...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a temperature of 25 °C. A 200% theoretical air is supplied at a temperature of 400K. At the middle of methane combustion process (i.e., after 50% of methane gas is burnt), liquid propane (C3H8) at 25°C is injected at a rate that produces neither CO nor O2 in the flue gases. Assume steady state and adiabatic process at 1 atm, calculate the following i. The...
Problem: Bapco needs to burn natural-gas fuel that contains 75 mol% methane, 15 mol% ethane, and ...
Problem: Bapco needs to burn natural-gas fuel that contains 75 mol% methane, 15 mol% ethane, and 10 mol% nitrogen. The following two reactions takes place: CH4(g) 20209) CO2(0) 2H2o) C2H6 (g) + 3.502(g) 2C02(g)3H20 (g) a) What is the standard heat of combustion (kJ/mol) of the fuel at 25 oC with water(g) as a product b) The fuel is supplied to a furnace with 60% excess air, both entering at 250C. The products leave at 600°C. If the combustion is...
The heater in a house burns natural gas with x% excess air according to the reaction: CH4 2 02>CO2 2 H2O The flue gas leaves the burner at Tout. The air and the natural gas (CH4) enter the burner...
The heater in a house burns natural gas with x% excess air according to the reaction: CH4 2 02>CO2 2 H2O The flue gas leaves the burner at Tout. The air and the natural gas (CH4) enter the burner Prepare a spreasheet for this system using a basis of one mole of methane feed to deter at standard conditons of 25°C and 1 atm pressure. mine: a) The standard heat for the combustion for the reaction above, b) The required...
Flue gas from a furnace is 30 mol% SO2, 25 mol% O2, and remainder CO2. To...
Flue gas from a furnace is 30 mol% SO2, 25 mol% O2, and remainder CO2. To clean 1155 mol/hr of flue gas and remove SO2, it is to be reacted with pure methane (natural gas) such that for every 65 moles of SO2 in the flue gas, 67 moles of methane is used (supplied). The primary reaction between methane and SO2 is as follows CH4 + SO2 → H2S + CO2 + H2O A side reaction also occurs as...
Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C and is mixed with the air. The products of combustion leave this reactor at 0.9 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables. CH4 Combustion 25℃ CO, HO 1600 K 30%acess 25 C The amount of carbon dioxide...
CaCO 25°C C (i.e., carbon) 25°C Flue gases 320°C Kiln Air 25°C CaO, CaCO3 950°C A vertical kiln is charged with pure limestone (CaCO3) and pure coke (not that kind... pure carbon), both at 25°C. Air (21% 02,79% N2) is blown at the bottom. The reaction between 02 in air and coke provides the heat for decomposition of the CaCO3. Combustion reaction: C02g) > CO2(e) Limestone decomposition reaction: CaCO3) -> Ca0s)+ CO2(g Coke is burned with 20% excess air. The...
Nitric oxide (NO) can be produced by partially oxidizing ammonia
(NH3) with oxygen via the following reaction:
2NH3 + 2.5O2 = 2NO + 3H2O (1)
Ammonia can also react with oxygen via the following
reactions:
2NH3 + 1.5O2 = N2 + 3H2O (2)
2NH3 + 3.5O2 = 2NO2 + 3H2O (3)
Ammonia is fed to a reactor at 25 °C and 500 kg/h. Dry air (21
mol % O2, 79 mol % N2) enters at 8000 kg/h. Eighty percent (80%)...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel and air enter the combustion chamber at 250 C and atmospheric pressure, determine (a) Air fuel ratio (b) the dew point of the products and (c) the heat transfer from the combustion process for 1 kmole of CH4 Substance hr, 700 K kJ/kmol he, 298 K kJ/kmol kJ/kmol CH4 02 N2 CO2 H2O -74,850 8.682 8,669 -393,520 9,364 -241,820 9,904 21,184 20,604 27,125 24,088...
78. Natural gas is primarily methane, CH4, and is used to heat homes. A typical home is approximately 2000 ft^2 and the ceilings are 8 ft high. How many grams of methane are required to raise the temperature in the home from 40 degree F to 70 degree F? How many grams of CO2 does this reaction produce? The following data may be helpful: The heat capacity of air is 1.01 J/g.K and the enthalpy of combustion of methane is...
AH CO t H20 AR CHA -398-5 t CHAG) 203 6 + 74-5 2AI Question 3 The combustion of methane is given by: CH (g)+ 2 O2 (g)-CO2 (g) + 2 H20 (g) The flue gases leave the reactor at 800°C. (a) Calculate the heat of reaction at 800°C? (5 point) 5c0 -8K Substance AHP298.15 (kJ/mol) C,IR=A A CH4 -74.5 1.13 3.64 CO2 -393.5 5.46 -241.8 3.47 OH (b) Calculate the amount of heat needed (kJ) to raise the temperature...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a temperature of 25 °C. A 200% theoretical air is supplied at a temperature of 400K. At the middle of methane combustion process (i.e., after 50% of methane gas is burnt), liquid propane (C3H8) at 25°C is injected at a rate that produces neither CO nor O2 in the flue gases. Assume steady state and adiabatic process at 1 atm, calculate the following i. The...
Problem: Bapco needs to burn natural-gas fuel that contains 75 mol% methane, 15 mol% ethane, and 10 mol% nitrogen. The following two reactions takes place: CH4(g) 20209) CO2(0) 2H2o) C2H6 (g) + 3.502(g) 2C02(g)3H20 (g) a) What is the standard heat of combustion (kJ/mol) of the fuel at 25 oC with water(g) as a product b) The fuel is supplied to a furnace with 60% excess air, both entering at 250C. The products leave at 600°C. If the combustion is...
The heater in a house burns natural gas with x% excess air according to the reaction: CH4 2 02>CO2 2 H2O The flue gas leaves the burner at Tout. The air and the natural gas (CH4) enter the burner Prepare a spreasheet for this system using a basis of one mole of methane feed to deter at standard conditons of 25°C and 1 atm pressure. mine: a) The standard heat for the combustion for the reaction above, b) The required...
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