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Chlorine is to be removed from a vent stream by scrubbing with a 5% w/w aqueous solution of sodium hydroxide. The vent stream is essentially nitrogen, with a maximum concentration of 5.5% w/w chlorine. The concentration of chlorine leaving the scrubber must be less than 50 ppm by weight. The maximum flow rate of the vent stream to the scrubber will be 4500 kg/h. Design a suitable packed column for this duty. The column will operate at 1.1 bar and ambient temperature. If necessary, the aqueous stream may be recirculated to maintain a suitable wetting rate.
Your dehumidifier removes water vapor from air by cooling the air to 12 °C. What fraction of water vapor is removed from the air?
How long must the tube be made if the outlet oil temperature is 60 C? The Nusselt number for oil side is 5.56. F. water side.
You are requested to flash the mixture so that the liquid stream is 85% of the inlet (by mol). If the pressure is 1.5 bar, what temperature should be used?
Make a list of the risks to society from the use of each type of power plant. With this knowledge, which type of radioactive decay has the net effect of changing a neutron into a proton? Which type of decay has the net effect of turning a proton i..
Is rusting a moderate reaction? Rusting is an example of what reaction?
Steam at 100°C is passed into a condenser at a rate of 500 kg/h and leaves as water at 60°C. If the condenser is supplied with cooling water which enters at 20°C and leaves at 40°C, calculate:- how much heat per hour is extracted from the steam.
Assuming the analyses are accurate, what do they show about the ratio by weight of each of the three fractions actually obtained? What is the overall effectiveness of each screen?
The process shown in Figure 6-19 is part of a chiller unit that uses water as the refrigerant. The following data are available: stream 1 is a vapor-liquid mixture at 0.5 bar; stream 5 is saturated vapor at 5 °C; stream 6 is at 500 °C; stream 7 is..
The biot modulus for a 3 cm diameter sphere at 100degree C subjected to a convective air flow resulting in an average convective heat transfer coefficient from the surface of 30W/m2
Hot air at 150 ºC is blown up through the dryer belt at a volumetric flow rate of 7200 m3 /hr per m2 of belt area. Will the bed of solids on the belt fluidize?
Defluorination & adhesion properties, Using ion bombardment-If Teflon is deflorinated to increase it's adhesion properties, then what would the changes in surface characteristics be?
The gas flow rate is 4000 kg/hr.sqm of air and the water entering is 6250 kg/hr.sqm. For this system, Henry's law holds good and y = 1.75 x, where y is the mole fraction of acetone in the gas in equilibrium with a mole fraction x in the liquid. Ho..
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