Inside the distillation columns, the
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Chemical Engineering · all questionsMass Transfer
Mass Transfer
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If moisture content of solid on dry basis is X, then the same on wet basis is
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According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, = gas viscosity)
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Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a
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An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
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The boiling points of pure components of a binary system __________ with increase in total pressure of the system.
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Humid volume is the total volume in m3 of 1 kg of
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The cooling effect in a cooling tower can not be increased by
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The most efficient cooling tower out of the following is
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Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is
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For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.
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Which of the following is the most suitable for extraction in a system having very low density difference?
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Pick out the correct statement.
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Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?
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An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is
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A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.
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For a binary mixture with low relative volatility,
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In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as
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At a fixed total pressure, humidity depends only on the
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Q100
Open questionWhich of the following is not fixed by the process requirements, in the design of absorbers?
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