1.definination
NaA membrane is an energy efficient combination of membrane permeation and evaporation. It's considered an attractive alternative to other separation methods for a variety of processes.
For example, with the low temperatures and pressures involved in pervaporation, it often has cost and performance advantages for the separation of constant-boiling azeotropes.
Pervaporation is also used for the dehydration of organic solvents and the removal of organics from aqueous streams.
Additionally, pervaporation has emerged as a good choice for separation heat sensitive products.
2.characteristics
Characteristics of the pervaporation process include:a. Low energy consumptionb.No entrainer required, no contaminationc.Permeate must be volatile at operating conditionsd. Functions independent of vapor/liquid equilibrium 3.purpose and function
Pervaporation technology can be used for the following products:MethanolEthanolPropanol & IPAButanol & IBAPentanol Cyclohexanol Benzyl alcohol Benzene Toluene PhenolAcetone Butanone Methyl isobutyl ketone (MIBK) Triethylamine Pyridine Aniline Chlorinated hydrocarbons Dichloro methane Perchloroethylene Methyl tert-butyl ether (MTBE) Ethyl tert-butyl ether (ETBE) Di-isopropyl ether (DIPE) Tetrahydro furan (THF)
inorganic pervaporation NaA membrane