Method for purifying phenol
US10532968B2 · kind B2 · utility
0Cited by
6References
6Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 10, 2017 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for purifying phenol, which comprises: supplying a feed comprising phenol, acetone, hydroxyacetone and water to a distillation column at 60° C. to 95° C.; separating the feed into a first fraction, which comprises the acetone, and separates to the upper part of the distillation column and a second fraction, which comprises the phenol, and separates to the lower part of the distillation column; and recovering the first fraction and the second fraction, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.