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Air is passing through a bubble-cap plate at a superficial vapor velocity of 2 ft/s. Water is flowing across the tray at a rate of 0.1 ft3/(s)(ft diameter). The water and air are at a temperature of 70"F, and the pressure is 1 atm. Assuming stable operation of the plate and a liquid gradient of 0.4 in., estimate the percent of the total pressure drop across the tray due to the head of liquid above the slots. The following specifications apply to the unit:
Inside diameter = 6 ft
Minimum total cross-sectional area of riser, direction-reversal space in cap, or annular cap space = 15 percent of tower cross-sectional area
Total slot area = 10 percent of tower cross-sectional area
Length of chord weir = 0.7 X tower diameter
Slots in caps are triangular, and slot width at base = 0.4 in.
Slot height = 1.5 in.
Static submergence = 1.0 in
in gas-shy-solid fluidization it is frequently common to have a wide size distribution of particles present in the
A 100-liter fed-batch fermenter was successfully operated for 200 h using an aeration rate of 14 l/s and a 5 W agitator. It is proposed to scale the fermentation up to 10,000 liters. What agitator power consumption is required?
A waste with a concentration of 0.1 gram per liter is to be introduced to a hazardous waste reactor that is to achieve 90% destruction. A reactant
Chlorine has two isotopes 35Cl and 37 Cl, for the anion Cl- , of the isotope 37 Cl, specify the number of protons np ,number of electrons ne and numbers of neutrons nn
Identify the ionic compounds in solution A and solution B. Identify the blood-red precipitate. Calculate the concentration (molarity) of all ions in the original solutions.
Draw T-S diagram of the cycle.
One of the classical methods for the determination of the manganese content in steel is to convert all the manganese to the deeply colored permanganate ion and then to measure the absorption of light.
Using the concept of a mass balance describe how environmental engineers and scientists model the carbon cycle in the earth's atmosphere allowing them to predict build up of CO2 over time.
Natural gas composed of 60. mol% methane, 30. mol% ethane, and 10. mol% propane at 25 °C and 500. psia is fed at a rate of 50. m3/hr into a boiler. In the boiler it is blended with enough air to provide 20% excess oxygen and combusted.
Calculate the molarity of each of the following aqueous solutions. a. 5.0 ppb Hg in H2O b. 1.0 ppb CHCl3 in H2O c. 10.0 ppm As in H2O d. 0.10 ppm DDT (C14H9Cl5) in H2O.
In the chlorination of ethylene to produce dichloromethane (DCE), the conversion of ethylene is reported as 99.0%. If 94 mol of DCE are produced per 100 moll of ethylene reacted, calculate the selectivity and the overall yield based on ethylene. T..
Dependence of measured energy on temperature for a pyrometer - Plot the volumetric flow rate vs. height
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