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US 2018/0290954 A1Published application
METHOD FOR RECOVERING PHENOL AND ACETONE FROM CRACKING REACTION PRODUCT OF BISPHENOL-A RESIDUE (As Amended)
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 hydro peroxide which is prepared by an oxidation reaction of cumene, and separating phenol and acetone;
- (B) a step of separating bisphenol-A which is prepared by reacting the separated phenol and acetone, and cracking a purge stream comprising unseparated bisphenol-A, or a further concentrated purge stream by discharging and recovering a portion of or entire phenol in an aqueous alkaline solution;
- and
- (C) a step of separating phenol and acetone by feeding the reaction product by the cracking reaction to a separation process of phenol and acetone,
- wherein step (A) and step (C) are conducted at the same time.
2 more elements
Dependencies are inferred from the claim text.