Isopropyl alcohol
Background technology
Isopropyl alcohol is an important chemical product and raw material, mainly used in pharmaceuticals, cosmetics, plastics, spices, coatings, etc. Isopropyl alcohol is widely used as a solvent or extractant in the pharmaceutical industry. Isopropyl alcohol can form an azeotrope with water (water content 12.6wt%). The traditional production and recovery of isopropyl alcohol use azeotropic distillation and extraction processes, which have high energy consumption and serious pollution. Molecular sieve adsorption dehydration cannot be used in industry due to high water content. Pervaporation technology can significantly improve the separation efficiency and reduce the energy consumption of the process.
Technical comparison
Comparison of different separation processes
| Production process |
Energy consumption |
Equipment cost |
Operational complexity |
| benzene azeotropic distillation |
High |
High |
Complicated |
| membrane dehydration |
Low |
Low |
Simple |
| extractive distillation |
High |
Higher |
Complicated |
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