ELEMENTARY PRINCIPLES OF CHEM. PROCESS.
4th Edition
ISBN: 9781119249214
Author: FELDER
Publisher: INTER WILE
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Chapter 9, Problem 9.65P
Methane is burned completely with 40% excess air. The methane enters the combustion chamber at 25°C, the combustion air enters at 150°C. and the stack gas [CO2, H2O(v), O2, N2] exits at 450°C. The chamber functions as a preheater for an air stream flowing in a pipe through the chamber to a spray dryer. The air enters the chamber at 25°C at a rate of 1.57 × 104m3(STP)/h and is heated to 181°C. All of the heat generated by combustion is used to heat the combustion products and the air going to the spray dryer (i.e., the combustion chamber may be considered adiabatic).
- Draw and completely label the process flow' diagram and perform a degree-of-freedom analysis.
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To evaluate the use of renewable resources, an experiment was carried out with rice hulls. After pyrolysis, the product gas analyzed 6.4% CO2, 0.1% O2, 39% CO, 51.8% H2, 0.6% CH4, and 2.1% N2. It entered a combustion chamber at 90 °F and a pressure of 35.0 in. Hg and was burned with 40% excess air (dry) at 70 °F and an atmospheric pressure of 29.4 in. Hg; 10% of the CO remains.
a. How many cubic feet of air were supplied per cubic foot of entering gas?
b. How many cubic feet of product gas were produced per cubic foot of entering gas if the exit gas was at 29.4 in. Hg and 400 °F?
Producer gas is a fuel that is manufactured from the reaction of coal, steam and air. A producer gas has the following composition by volume (dry basis): 20.35% CO, 11.03%, CO2, 15% H2, 51.43% N2, 1.98%O2 and 0.21 % CH4. The gas is flowing at 6000 cfm. It has a temperature of 200℃ , a pressure of 21 cm Hg and a partial pressure of 50 mm Hg for H2O. The atmospheric pressure is 758 mm Hg. The gas is delivered from the source to the furnace by means of a pipe. It cools down to 50 ℃ and is compressed to 2 atm pressure. At this condition, calculate:1. the volumetric flow ate2. the mass flow rate3. the partial pressure of each component/including water)4. complete analysis of the mixture
The boiler in an apartment building uses propane (C3H8) to heat
water that circulates throughout the building as steam. 1.00
m'/s of propane gas at 25°C and 1 atm is combusted with 10%
excess air at 25°C and 1 atm. After all of the propane is
combusted, the product gas contains a 10.0:1 molar ratio of
CO2 to CO and leaves the boiler at 25°C. Heat from the boiler
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Molecule
(Formula)
(kJ/mol)
-393.5 (g)
Carbon
dioxide
(CO2)
Carbon
-110.52 (g)
monoxide
(CO)
Hydrogen
(H2)
Nitrogen
(N2)
Охуgen
(O2)
Propane
(C;Hs)
Hot Water (out).
Flue
Gas Shutoff Valve -
Cold Water (in)
-119.8(1)
-103.8(g)
-285.84(1)
Gas Supply Line-
Cold Water
Shutoff Valve
Water
(H20)
-241.83(g)
Temperature /
Pressure Relief
Valve
Water Line
Overflow Pipe.
Tank Insulation
- Dip Tube
Drain Valve
Gas Burner Control-…
Chapter 9 Solutions
ELEMENTARY PRINCIPLES OF CHEM. PROCESS.
Ch. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.2PCh. 9 - Prob. 9.3PCh. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.5PCh. 9 - Prob. 9.6PCh. 9 - Prob. 9.7PCh. 9 - Prob. 9.8PCh. 9 - The standard heat of combustion of gaseous ethane...Ch. 9 - The standard heat of combustion (AH°) of liquid...
Ch. 9 - Prob. 9.11PCh. 9 - Prob. 9.12PCh. 9 - In the production of many microelectronic devices,...Ch. 9 - Prob. 9.14PCh. 9 - Prob. 9.15PCh. 9 - Prob. 9.16PCh. 9 - Prob. 9.17PCh. 9 - Carbon monoxide at 25°C and steam at 150°C are fed...Ch. 9 - Prob. 9.19PCh. 9 - Prob. 9.20PCh. 9 - Ethyl alcohol (ethanol) can be produced by the...Ch. 9 - Prob. 9.22PCh. 9 - Prob. 9.23PCh. 9 - Prob. 9.24PCh. 9 - Formaldehyde is produced commercially by the...Ch. 9 - Prob. 9.26PCh. 9 - Prob. 9.27PCh. 9 - Prob. 9.28PCh. 9 - Prob. 9.29PCh. 9 - A gas mixture containing 85 mole% methane and the...Ch. 9 - Ethylene oxide is produced by the catalytic...Ch. 9 - Cumene (C6H5C3H7) is produced by reacting benzene...Ch. 9 - Ethylbenzene is converted to styrene in the...Ch. 9 - Prob. 9.34PCh. 9 - Prob. 9.35PCh. 9 - Prob. 9.36PCh. 9 - Prob. 9.37PCh. 9 - Coke can be converted into CO—a fuel gas—in the...Ch. 9 - Prob. 9.39PCh. 9 - Prob. 9.40PCh. 9 - Prob. 9.41PCh. 9 - The equilibrium constant for the ethane...Ch. 9 - You are checking the performance of a reactor in...Ch. 9 - Hydrogen is produced in the steam reforming of...Ch. 9 - Prob. 9.45PCh. 9 - Five cubic meters of a 1.00-molar aqueous sulfuric...Ch. 9 - Prob. 9.47PCh. 9 - Prob. 9.48PCh. 9 - Prob. 9.49PCh. 9 - Calcium chloride is a salt used in a number of...Ch. 9 - A dilute aqueous solution of sulfuric acid at 25°C...Ch. 9 - A 2.00 mole% sulfuric acid solution is neutralized...Ch. 9 - A 12.0-molar solution of sodium hydroxide (SG =...Ch. 9 - Citric acid (C6H8O7) is used in the preparation of...Ch. 9 - Ammonia scrubbing is one of many processes for...Ch. 9 - Various uses for nitric acid are given in Problem...Ch. 9 - A natural gas is analyzed and found to consist of...Ch. 9 - Prob. 9.58PCh. 9 - A fuel gas is known to contain methane, ethane,...Ch. 9 - A fuel gas containing 85.0 mole% methane and the...Ch. 9 - A mixture of air and a fine spray of gasoline at...Ch. 9 - The heating value of a fuel oil is to be measured...Ch. 9 - Methanol vapor is burned with excess air in a...Ch. 9 - Methane at 25°C is burned in a boiler furnace with...Ch. 9 - Methane is burned completely with 40% excess air....Ch. 9 - A gaseous fuel containing methane and ethane is...Ch. 9 - A coal contains 73.0 wt% C, 4.7% H (not including...Ch. 9 - A mixture of methane, ethane, and argon at 25°C is...Ch. 9 - Prob. 9.69PCh. 9 - Prob. 9.70PCh. 9 - Prob. 9.71PCh. 9 - A bituminous coal is burned with air in a boiler...Ch. 9 - Prob. 9.73PCh. 9 - A natural gas containing 82.0 mole% CH4and the...Ch. 9 - Prob. 9.75PCh. 9 - Liquid n-pentane at 25°C is burned with 30% excess...Ch. 9 - Methane is burned with 25% excess air in a...Ch. 9 - Methane and 30% excess air are to be fed to a...Ch. 9 - Prob. 9.79PCh. 9 - In Problem 9.79, the synthesis of methanol from...Ch. 9 - Natural gas that contains methane, ethane, and...Ch. 9 - Prob. 9.82PCh. 9 - The wastewater treatment plant at the Ossabaw...
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