The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2022
Filed:
Oct. 15, 2019
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present disclosure relates to a method and an apparatus for decomposing a phenolic by-product generated in a bisphenol A preparation process, the method including: a step (S) of feeding the phenolic by-product to a multistage reactive distillation column; a step (S) of separating the phenolic by-product into an upper discharge stream containing an active component, a side discharge stream containing acetophenone, and a bottom discharge stream containing tar by the multistage reactive distillation column; and a step (S) of mixing the side discharge stream discharged from the multistage reactive distillation column and the bottom discharge stream discharged from the multistage reactive distillation column to form a mixed discharge stream.