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Application field

Technical background

Isopropanol is an important chemical product and raw material, mainly used in pharmaceutical, cosmetics, plastics, spices, coatings and so on. Isopropanol is widely used as solvent or extraction agent in the pharmaceutical industry. Isopropanol can form azeotrope with water (12.6wt% water content). The traditional production and recovery of isopropanol adopts azeotrope distillation and extraction process, which has high energy consumption and serious pollution. Pervaporation technology can significantly improve separation efficiency and reduce process energy consumption.

Technical comparison

 

The production process

The energy consumption

Cost of equipment

Operational complexity

Azeotropic distillation of benzene

high

high

complex

Membrane dehydration

low

low

simple

Extractive distillation

high

higher

complex

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