Mass Transfer
Bollman extractor

Is used for extraction of oil from oilseed
Is a static bed leaching equipment
Is a centrifugal extractor
Employs only counter-current extraction

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Water has a high latent heat of evaporation
They are always equal under all circumstances
Solubility of the components of air in water is very small
Lewis number is close to unity

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Mass Transfer
Flash distillation is

Used for multicomponent systems like crude refining
Same as differential distillation
Most useful for handling binary systems
Same as simple distillation

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