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US 10,358,403 B2Granted
Method for recovering phenol and acetone from cracking reaction product of bisphenol-A residue
AssigneeLG Chem, Ltd.
InventorsSang-Beom Lee, Joon-Ho Shin, In-Yong Jeong, Jong-Hui Park, Myeong-Yeon Keum, Jeong-Ho Kim, Tae-Ho Kim
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Abstract
Disclosed is a method for recovering phenol and acetone from the cracking reaction product of bisphenol-A residue, by which economic feasibility and efficiency may be improved by utilizing a phenol/acetone purification process used for preparing bisphenol-A.
Claims14
A method for recovering phenol and acetone from a cracking reaction product of bisphenol-A residue, the method comprising:
- (A) a step of cracking cumene hydroperoxide which is prepared by an oxidation reaction of cumene, and producing phenol and acetone;
- (A-1) a step of separating phenol and acetone;
- (B) a step of separating bisphenol-A which is prepared by reacting the separated phenol and acetone, and cracking a bisphenol-A residue in a purge stream comprising unseparated bisphenol-A in an aqueous alkaline solution;
- and
- (C) a step of feeding the reaction product by the cracking reaction of the bisphenol-A residue to the step (A-1).
2 more elements
Dependencies are inferred from the claim text.