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US 2015/0083578 A1Published application
Method and apparatus for preparing isopropyl alcohol
AssigneeLG Chem, Ltd.
InventorsSung Kyu Lee, Jong Ku Lee, Joon Ho Shin
Life of this patent
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Abstract
The present application relates to an apparatus for purifying isopropyl alcohol. The present application enables isopropyl alcohol to be obtained in a high purity from a feed comprising water and isopropyl alcohol with a minimum amount of energy consumption.
Claims15
A method for preparing isopropyl alcohol, comprising:
- supplying a feed including isopropyl alcohol and water and having a water content of 1,000 ppm to 10,000 ppm to a dehydration means including molecular sieves;
- removing the water with the dehydration means to adjust the water content of the feed to 300 ppm or less;
- and
- supplying the feed of which the water content is adjusted to 300 ppm or less to a divided wall column to carry out purification.
1 more element
An apparatus for preparing isopropyl alcohol, comprising:
- a dehydration means including molecular sieves and installed to adjust a water content of a feed to 300 ppm or less and to discharge the feed when the feed including isopropyl alcohol and water and having the water content of 1,000 ppm to 10,000 ppm is supplied to the dehydration means;
- and
- a divided wall column installed to allow the feed passed through the dehydration means to be introduced and purification process to be carried out.
Dependencies are inferred from the claim text.