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The composition of the feed to a debutaniser is given below. Make a preliminarydesign for a column to recover 98 per cent of the n-butane overhead and 95 percent of the isopentane from the column base. The column will operate at 14bar and the feed will be at its boiling point. Use the short-cut methods andfollow the procedure set out below. Use the De Priester charts to determine therelative volatility. The liquid viscosity can be estimated using the data given inAppendix D
(a) Investigate the effect of reflux ratio on the number of theoretical stages
(b) Select the optimum reflux ratio.
(c) Determine the number of stages at this reflux ratio.
(d) Estimate the stage efficiency.
(e) Determine the number of real stages.
(f) Estimate the feed point.
(g) Estimate the column diameter.Feed composition:kg/hpropane C3 910isobutane i-C4 180n-butane n-C4 270isopentane i-C5 70normal pentane n-C5 90normal hexane n-C6 20
Hydrogen gives off 120. J/g of energy when burned in oxygen, and methane gives off 50. J/g under the same circumstances. If a mixture of 5.0 g of hydrogen and 10. g of methane is burned, and the heat released is transferred to 50.0 g of water at 2..
Give the relation for strain energy in a rubber as a function of the extension ratios, and from this develop equations developing the extension ratio and the engineering stress for uni-axial extention
Why is it important - where does galvanising fit into possible corrosion protection strategies?)
Determine the speed at which the machine runs as a motor.
Calculate equilibrium products at 500K for the reaction of 1 mole CO and 1 mole H2O according to the water-gas shift reaction (CO • H2O CO2 • H2) as a function of temperature four ways
The resulting products are cooled and passed over a medium-temperature shift catalyst that gives an outlet composition corresponding to equilibrium at 350 °C.
A mixture of ethanol and benzene is separated in a network of distillation and membrane separation steps. In one intermediate step, a near-azeotropic liquid mixture of 8,000 kg/h of 23 wt% ethanol in benzene is fed to a pervaporation membrane cons..
If the transmitted beam is reversed, so that it impinges on the interface from the glass side, calculate what the transmitted angle will be through the tissue. Does this make sense? Explain
Calculate the mass percent of magnesium chloride in the mixture. Determine the minimum volume of silver nitrate that must have been added to ensure complete formation of the precipitate.
If one of the machines has its field excitation adjusted such that it delivers 125 A lagging current, determine the armature current, power factor, excitation voltage, and power angle of each machine.
1 when a thermocouple is moved from one medium to another medium at a different temperature the thermocouple must be
An effluent disposal contractor is considering entering the recycled field. At present he incinerates an organic waste containing recoverable solvents and dumps the aqueous based effluent containing acids and metals.
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