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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 the amount (magnitude) of heat (MJ) that must be transferred from the gas in the waste heat boiler to accomplish the indicated cooling ?(...........MJ)
"B". How much saturated steam at 50.0 bar can be produced from boiler feedwater at 40.0 °C for the same basis of calculation?(...............) kg water
CAt what rate (kmol/s) must fuel gas be burned to produce 1080.0
kg/h of saturated steam (an amount required elsewhere in the plant)
in the waste-heat boiler?
What is the volumetric flow rate (m3/s) of the stack gas
leaving the boiler?
| n⋅feed = | ( .............)x 10–3 kmol/s |
| V⋅ Stack gas at 350.0 °C = | ( ..........)m3/s |
(Assume all the heat transferred from the gas goes into the steam production).
.... Please do not round any numbers....
Solutions
Amanda K answered 2 years agoRelated Solutions
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...
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 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...
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...
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...
A fuel consists of 75% mol methane 25% mole of ethane enters an oven with 80%...
A fuel consists of 75% mol methane 25% mole of ethane
enters an oven with 80%
excess air at 30 degrees Celsius. If 8 x 10 ^ 5 kJ per kg mol of
fuel is transferred as heat to the boiler tubes, at what
temperatures do the combustion gases from the furnace come out?
Assume combustion
complete
* The steps of the solution of the thermodynamics book
edition 7 are not accepted.
* Do the exercise step by step please....
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...
mixture of 75 mole% propane and the balance methane is burned with 25 % excess air....
mixture of
75 mole% propane and the balance methane is burned with 25 % excess
air. Fractional conversion of 90% of propane and 85% of the methane
are achieved; of the carbon that reacts, 95% reacts to form
CO2
and the
balance reacts to form CO. .
1- draw and completely label the flow chartfor
the process including labels for all unknown flow
rates.
2-calculate the molar flow rate os air to the
reactor per mol of fuel fed to...
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%...
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