Q2/ It is desired to reduce the concentration of pollutant gas in air to 10% of inlet concentration using scrubbing with pure water and the ratio of slops of operating line to equilibrium line is 1.5. 1- Calculate the actual No. of trays wih the 40% effeciency 2-Calculate the No. of gas transfer unite for packed column.

Q2/ It is desired to reduce the concentration of pollutant gas in air to 10% of inlet concentration using scrubbing with pure water and the ratio of slops of operating line to equilibrium line is 1.5. 1- Calculate the actual No. of trays wih the 40% effeciency 2-Calculate the No. of gas transfer unite for packed column.

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter8: Gases

Section: Chapter Questions

Problem 155CP: Methane (CH4) gas flows into a combustion chamber at a rate of 200. L/min at 1.50 atm and ambient...

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A fuel contains 78wt% carbon and 22wt% hydrogen (H). Combustion results in the following composition by volume (dry basis): CO2 : 9.41 CO : 1.69 O2 : 3.8 N2: 85.1 The following equations describe the chemical reactions taking place: CO+0.5 O2→ CO2 C+O2→ CO2 H2 + 0.5 O2 → H2O C+0.5O2→ CO On the basis of 120 lb moles of dry flue gas, the O2 required (lb moles) for complete combustion is most nearly. Find the amount of O2 needed for the completion of combustion
Producer gas analyzing 25% CO, 13.2% H2, 0.40% CH4, 5.4% CO2, 0.80% O2 and 55% N2 isburned in excess air at 250C, 745 mmHg and 70% RH. Partial Orsat analysis of the stack gasshows 16.13% CO2, 1.79% CO and 0.72% H2. Calculate:a. Partial pressure of H2O in the stack gas if the stack gas leaves at 1 atmb. Dew point of the stack gas
Calculate the partial pressure in atm of each gas in a mixture of gases. In a tank containing 16.00 grams of carbon dioxide, 26.50 g of nitrogen gas, and 8.00 grams oxygen gas for a total pressure of 80.0 kPa. Conversion: 1 atm = 101.325 kPa; MW(CO2) = 44.01 g/mol;MW(N2) = 28.0 g/mol; and MW(O2) = 32.0 g/mol. The pCO2, pN2, and pO2 in atm are .........., ............, and .............., respectively in 3 sig. figures.
A circular lake of diameter 2.5m is receiving wastewater with a flow rate of 25 L/sec from a village has phosphorus concentration of 0.5 mg/L. The lake receives Phosphorus point source concentration of 0.8 g/sec. If the wastewater is completely mixed in the pond and removes phosphorus with a removal rate of 12 m/year, find the concentration of phosphorus (mg/L) in effluent water stream? Assume steady state. (Round-off to one decimal place).
A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%. A mixture containing 9.0 mole% methane in air flowing at a rate of 7:00 x 102 kg/h is to be diluted with pure air to reduce the methane concentration to the lower flammability limit. Calculate the required flow rate of air in mol/h and the percent by mass of oxygen in the product gas. (Note: Air may be taken to consist of 21 mole% O2 and 79% N2 and to have an average molecular weight of 29.0.)
(a) Water in vadose zone contains chlorobenzene of concentration 40 mg/L. What is the equilibrium concentration soil air in contact with this solution? (b) An aquifer with porosity 0.3 has distribution coefficient of TCE as 100 L/kg. What fraction of TCE is in aqueous phase and sorbed phase of the soil?
stack gas analysis: 83.08% N2, 7.5% CO2, 2.3% CO, 1.12% H2, 6% O2 with a saturation temperature of 54°C at 400°C and 760mmHg. a) %excess of air (1000 m^3 of air is supplied, produced 3100 m^3 of stack gas) b) chemical formula of the fuel burned c) analysis of the fuel mixture
Cereal is being dried in a vertical drier by air flowing countercurrent to the cereal. To prevent breakage of the cereal flakes, some of the exit air from the drier is recycled back to mix with the the moist fresh air. For each 1000 kg/hr of wet cereal fed to the drier, calculate the input of moist fresh air in kg/hr and recycle rate in kg/hr. The available data on stream compositions is (fractions): For water: Fresh air: 0.0132 Wet cereal: 0.200 Exit air: 0.263 Dried Cereal: 0.050 Air entering Dryer: 0.066
The volume of HCI is 100 mL , mass of solid added is 1.008g, moles of solid 0.0276 Mol, mass of HCI is 100g, initial temperature is 21.8 degrees Celsius, Final temperature is 30.7 degrees Celsius, Calculate q rxn(= -mc Delta T of HCI),
The gas entering an NH3 reactor are in mole ratio of 4H2 :1N2 The mole ratio of the gases in the exit stream is 4.25H2 :IN2 The reaction is H2 +N2 NH3 Calculate a) the limiting reactant b) the moles of excess reactant c) percent excess reactant d) kmole of entering gas that must enter the reactor to produce 150,000 kg of pure NH3 per day e) volume in liters of entering gas measured at 500°C and 760 mmHg
A solution containing 100 lbm KNO 3/100 lbm H 2O at 80°C is fed to a cooling crystallizer operated at 25°C. Slurry from the crystallizer (KNO3 crystals suspended in saturated solution) is fed to a filter, where the crystals are separated from the solution. Use the solubility data in Figure 6.5-1 to determine the production rate of crystals (lbm/lbm feed) and the solid-to-liquid mass ratio (lbm crystals/lbm liquid) in the slurry leaving the crystallizer.
A mixture of He and N2 gas is contained in a tube at 298 K and 101.32 kPa total pressure. At one point the partial pressure of He is pA1=60.79 kPa and at a point 0.25 m distance away, pA2=20.26 kPa. If the total pressure is constant throughout the tube, calculate the flux of He at steady state if DAB of the He-N2 mixture is 0.687x10-4 m2/s.