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US 8,894,823 B2Granted
Method for manufacturing isopropyl alcohol
AssigneeLG Chem, Ltd.
InventorsSung Kyu Lee, Jong Ku Lee, Joon Ho Shin
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Abstract
The present application relates to a method of manufacturing isopropyl alcohol. Isopropyl alcohol with high purity is obtained from a feed including water and isopropyl alcohol. In addition, energy used in a process of obtaining the isopropyl alcohol, and investment cost for manufacturing facilities are reduced.
Claims8
A method of manufacturing isopropyl alcohol, comprising:
- introducing a feed comprising isopropyl alcohol and water into an upper supply area of a dividing wall column, wherein the water content of the feed is 1,000 to 10,000 ppm;
- distilling the feed while maintaining an operating temperature of an upper part of the dividing wall column at 40° C. to 140° C. and an operating temperature of a lower part of the dividing wall column at 170° C. or less;
- and
- obtaining a product comprising isopropyl alcohol from a lower outflow area of the dividing wall column.
1 more element
Dependencies are inferred from the claim text.