Question
In: Chemistry
A fuel gas containing methane and ethane is burned with air in a furnace, producing a...
A fuel gas containing methane and ethane is burned with air in a furnace, producing a stack gas at 300.°C and 105 kPa (absolute). You analyze the stack gas and find that it contains no unburned hydrocarbons, oxygen, or carbon monoxide. You also determine the dew-point temperature.
(a) Estimate the range of possible dew-point temperatures by determining the dew points when the feed is either pure methane or pure ethane.
(b) Estimate the fraction of the feed that is methane if the measured dew-point temperature is 59.5°C
(c) What range of measured dew point temperatures would lead to calculated methane mole fractions within 5% of the value determined in Part (b).
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
A fuel gas containing methane and ethane is burned with air in a furnace, producing a...
A fuel gas containing methane and ethane is burned with air in a
furnace, producing a stack gas at 300 ° C and 105 kPa (absolute).
You analyze the stack gas and find that it contains no unburned
hydrocarbons, oxygen, or carbon monoxide. You also determine the
dew-point temperature.
(a) Estimate the range of possible dew-point temperatures by
determining the dew points when the feed is either pure methane or
pure ethane.
(b) Estimate the fraction of the feed that...
1.) A fuel gas containing 95mol% methane and the balance ethane is burned completely in a...
1.) A fuel gas containing 95mol% methane and the balance ethane
is burned completely in a furnace with 25% excess air (79mol% N2,
21mol% O2). The stack gas leaves the furnace at 900°C and is cooled
to 450°C in a waste heat boiler. Assume a pressure of 1atm
throughout the process.
(a) Draw a fully labeled flow diagram, and calculate the amount
of heat (in kJ) that must be transferred from the gas in the waste
heat boiler to achieve...
A fuel gas containing 75.0 mole% methane and the balance ethane is burned completely with 15.0...
A fuel gas containing
75.0 mole% methane and the balance ethane is burned completely with
15.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 450.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
Taking as a basis of
calculation 100.0 mol of the fuel gas fed to the furnace, calculate...
A fuel gas containing 75.0 mole% methane and the balance ethane is burned completely with 15.0...
A fuel gas containing 75.0 mole% methane and the balance ethane
is burned completely with 15.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 450.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
Taking as a basis of calculation 100.0 mol of the fuel gas fed
to the furnace, calculate...
A fuel gas containing 85.0 mole% methane and the balance ethane is burned completely with 25.0...
A fuel gas containing 85.0 mole% methane and the balance ethane
is burned completely with 25.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 350.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
"A".Taking as a basis of calculation 100.0 mol of the fuel gas
fed to the furnace, calculate...
A fuel gas containing 77% methane, 7% ethane and rest propane by volume. The fuel flows...
A fuel gas containing 77% methane, 7% ethane and rest propane by
volume. The fuel flows to a combustion chamber at the rate of 1321
m^3/h at 15C and 150 kPA (gauge) where it is burned with 8% excess
air entering at 20C. ROund your answer to the nearest whole
number.
a) WHat is the propane percent in the fuel gas?
b) What is the actual number of moles of fuel flowing into the
combustion chamber?
c) What is the...
Ethane gas (C2H6) is burned with air. The fuel flow rate is 0.1 kg/s and the...
Ethane gas (C2H6) is burned with air. The
fuel flow rate is 0.1 kg/s and the air flowrate is 2.2 kg/s.
Ethane’s enthalpy of formation is -84,680 kJ/kmol. Determine:
The equivalence ratio
Ethane’s lower heating value by deriving it from enthalpy of
formation data.
The heat release rate, in kW.
The mass fraction of oxygen in the products.
The mass of CO2 emitted per 1000 hours of operation.
The mass of fuel burned per 1000 hours of operation.
The adiabatic...
Methane at 25°C is burned in a boiler furnace with 10.0% excess air. The air enters...
Methane at 25°C is burned in a boiler furnace with 10.0% excess
air. The air enters the burner at a temperature of 100°C. Ninety
percent of the methane fed is consumed; the product gas is analyzed
and found to contain 10.0 mol CO2 per 1 mol of CO. The exhaust
gases exit the furnace at 400°C. Calculate the rate of heat
transferred from the furnace, given that a molar flow rate of 100
mol/s CH4 is fed to the furnace.
A furnace is burning natural gas (90% by mol methane and the balance ethane) at 20...
A furnace is burning natural gas (90% by mol methane and the
balance ethane) at 20 degrees C and 1 atm with 25% excess air at
150 degrees C and 1.1 atm. The product gases are at 600 degrees C
and 1 atm. 95% of each fuel gas forms CO2 while the balance forms
CO. a) What is the ratio of air supply volume to fuel volume? b)
What is the composition of the product gas mixture on a mol%...
A furnace is burning natural gas (90% by mol methane and the balance ethane) at 20...
A furnace is burning natural gas (90% by mol methane and the
balance ethane) at 20 Celsius degree and 1 atm with 25% excess air
at 150 Celsius degree and 1.1 atm. The product gases are at 600
Celsius degree and 1 atm. 95% of each fuel gas forms CO2 while the
balance forms CO. a) What is the ratio of air supply volume to fuel
volume? b) What is the composition of the product gas mixture on a
mol%...
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