azeotropic distillation
TRANSCRIPT
I M P O R T A N C E O F A Z E O T R O P I CD I S T I L L A T I O N I N R E L E V A N C E T O
I N D U S T R I A L A P P L I C A T I O N
Azeotropic distillation
Azeotropic distillation is based on two different methods
I. Method with no Entrainer
a) Pressure swing distillationb) Hybrid method comprises of memebrane + distillation
II. Method with Entrainer
a) Homogeneous azeotropic (homoazeotropic) distillationb) Heterogeneous azeotropic (heteroazeotropic) distillationc) Extractive distillation
Method with no Entrainer
Presusure Swing distillation method is specifically employed in the distillation of Tetrahydrofuran/water purification or separation which works on the principle of changing pressure.
Hybrid method is employed in the processes like Dehydration of alcohols, removal Of Volatile Organic components, (VOC) from wastewater
Homogenous azeotropic distialtion is involved in the distioalltion of Hydrochloric acid/water + sulphuric acid , nitric acid/water + sulphuric water.
Heterogenous azeotropic distialltion comprises of the Dehydration of ethanol by using benzene , diethylether or pentane , separate acetic acid/water by using ethyl acetate.
Extractive distillation is usually involved ocarry pout the Acetone/methanol by using water
Industrial Relevance
Efficient and recovery and recycling of organic solvent in chemical based and other associated industry
Commonly used distillation method, because of its high performance and high o=purity solvent recovery
Employed in area where normal distillation does not works that is the azeotropic mixture.
Use of entrainer to produce the distillate effectively
Extractive distillation
It is one of the form of the Azeotropic Distillation which has been practiced since the traditional method of distillation has came no existence.
It is carried out in the presence of a miscible, high boiling, relatively non-volatile components
The component need to be separated using the extractive distillation involves removal of CO2 from natural gas, ‘‘break’’ the CO2/C2 azeotrope, etc.