Question

A gas contains 80.0 wt% propane, 15.0 wt% -butane, and the balance water. a. Write out...

A gas contains 80.0 wt% propane, 15.0 wt% -butane, and the balance water.

a. Write out the balanced stoichiometric equations for complete and incomplete combustion.

b. If 100 kg/h of this fuel is to be burned with 30% excess air, what is the required air feed rate (kmol/h)? Calculate the molar composition of the feed gas on both a wet and a dry basis and the ratio (mol H2O/mol dry gas).

c. If 100 kg/h of this fuel is to be burned with 30% excess air and all the fuel is consumed with 75% complete combustion for both fuels, calculate the molar composition of the outlet gas on both a wet and a dry basis and the ratio (mol H2O/mol dry gas).

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a gas conatins 75.0wt% methane, 10.0% ethane, 5.0% ethylene, and the balance water a) calculate the...
a gas conatins 75.0wt% methane, 10.0% ethane, 5.0% ethylene, and the balance water a) calculate the molar composition of this gas on both wet and dry basis and the ratio (mol h2o/mol dry gas) b ) if 100kg/h of this fuel is to be burned with 30% excess air, what is the required air feed rate (kmol/h)? how would the answer change if the combustion were only 75% complete?
A stream of pure propane (C3H8) and a stream of pure butane (C4H10) are both fed...
A stream of pure propane (C3H8) and a stream of pure butane (C4H10) are both fed to a continuous combustion chamber, where they are burned with pure oxygen. Gas analysis indicates that the product gas from the combustion chamber contains 47.4 mole% H2O. The combustion gases are then fed to a condenser, where all of the water vapour is removed (as condensate) to give a gas stream containing 69.4 mole% CO2 and the balance is O2. basis of 100 mol/min...
1. A combustion chamber is fed with 50 kmol/h of butane and 2000 kmol/h of air....
1. A combustion chamber is fed with 50 kmol/h of butane and 2000 kmol/h of air. Calculate the % excess air used and composition of the gases leaving combustion reactor, assuming complete combustion of butane. 2. In manufacture of chlorine, feed containing hydrochloric acid gas and air are fed to the reactor. The product gases leaving the reactor are found to contain 13.2% HCl, 6.3% 02, 42.9% N2, 30% Cl2 and 7.6% H2O (by weight). Calculate: i) The percent excess...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7 mole% H2O. After all the water is removed from the products, the residual gas contains 68.8 mole% CO2 and the balance O2 a. What is the mole percent of propane in the fuel? % b. It now turns out that the fuel mixture may contain not only propane and butane but also other hydrocarbons. The fuel does not contain oxygen. However, the dry combustion...
ChE question A fuel oil is analyzed and found to contain 87 wt% carbon, 11 wt%...
ChE question A fuel oil is analyzed and found to contain 87 wt% carbon, 11 wt% hydrogen, 1.6 wt% sulfur and the remainder incombustible matter. The oil is burned with 20% excess air based on complete combustion of carbon to CO2, hydrogen to H2O and sulfur to SO2. The oil is burned completely but 5% of the carbon forms CO. Calculate the molar composition of the stack gas.
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It is to be fed to the combustion chamber in 10% excess air at 25ºC, where it is completely burnt to carbon dioxide and water. The flue gases produced are to be used to generate 5 bar steam from water at 90ºC. (a) Write balanced equations for the combustion of each component of the fuel gas. (b) Explain the need for excess air....
A natural gas mixture of methane (CH4) and ethane (C2H6) are used for the fuel source...
A natural gas mixture of methane (CH4) and ethane (C2H6) are used for the fuel source for generation of steam in a refinery plant.In this process,The gas stream mixture 1000kg/min having 70wt% CH4 and 30wt% C2H6 is burned with 100% excess air.Gas analysis shows that the CH4 and 85% C2H6 are completely burned into carbon dioxide , while 10% C2H6 is partially burned into carbon monoxide and the remaining C2H6 is unreacted. Assume the air stream feed to the furnace...
mixture of 35 mole% pentane (C5H12) and 65 mole% butane (C4H10) is burned with 30% excess...
mixture of 35 mole% pentane (C5H12) and 65 mole% butane (C4H10) is burned with 30% excess air in the furnace of a boiler. Fractional conversions of 0.95 for the pentane and 0.90 for the butane are reported. The mole ratio of CO/CO2, in the combustion gases is found to be 0.05. (a) List the major components that will be present in the product gas stream from the process. [5%] (b) Draw and label fully a PFD for this process. [10%]...
A natural gas contains 80.0 wt% CH4 and the balance C2H6. Five hundred cubic meters per...
A natural gas contains 80.0 wt% CH4 and the balance C2H6. Five hundred cubic meters per hour of this gas at 40.0°C and 1.30 bar is to be burned with 25.0% excess air. The air flowmeter is calibrated to read the volumetric flow rate at standard temperature and pressure. What should the meter read (in SCMH — standard cubic meters per hour) when the flow rate is set to the desired value?
Butane (C4H10) is burned with excess air. The exhaust gas from the combustion is analyzed and...
Butane (C4H10) is burned with excess air. The exhaust gas from the combustion is analyzed and has the following composition: 4.5 mole% O2, 73.8 mole% N2, 11.824% H2O, 0.236 mole% C4H10, 8.48 mole% CO2, 1.16 mole% CO. Determine: 1. (8 points) The fractional conversion of C4H10 2. (8 points) The ratio of exhaust produced to C4H10 fed 3. (9 points) The percent excess air fed to the process. Draw a flow chart.