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US 11,084,771 B2Granted
Method for purifying phenol
AssigneeLG Chem, Ltd.
InventorsHyun Nam, Young Ho Lee, Ki Yong Yoon, Jun Hyuk Lim, Kyung Moo Lee
Life of this patent
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Abstract
The present invention relates to a method for purifying phenol, which comprises: contacting a phenol stream comprising hydroxyacetone, 2-methylbenzofuran, 3-methylbenzofuran and phenol with an acyl chloride in the presence of an organic sulfonic acid to convert one or more selected from the group consisting of hydroxyacetone, 2-methylbenzofuran and 3-methylbenzofuran into a high boiling point compound having a boiling point higher than that of the phenol; and recovering the high boiling point compound from the phenol stream.
Claims8
A method for purifying phenol, comprising:
- contacting a phenol stream comprising hydroxyacetone, 2-methylbenzofuran, 3-methylbenzofuran and phenol with an acyl chloride in the presence of an organic sulfonic acid to convert one or more selected from the group consisting of hydroxyacetone, 2-methylbenzofuran and 3-methylbenzofuran into a high boiling point compound having a boiling point higher than that of the phenol;
- and
- recovering the high boiling point compound from the phenol stream.
Dependencies are inferred from the claim text.