Patent Number: 6,486,365

Title: Production and purification of phenol: hydroxyacetone removal by hydrotalcite

Abstract: A process for converting carbonyl-type impurities contained in a phenolic solvent to high-boiling derivatives is provided by contacting the phenolic solvent with a hydrotalcite-type material (HTM). The phenol can be separated from the high-boiling derivatives using conventional separation techniques, such as distillation, so the invention also provides a process for separating carbonyl-type impurities, such as hydroxyacetone (HA), from a phenolic solvent. The process can be applied in the conventional industrial process for converting cumene to phenol to remove carbonyl-type impurities from the phenol product. A process and a facility for producing purified phenol by converting cumene to phenol are provided. In the conversion of cumene to phenol, the phenol often contains carbonyl-type impurities. The phenol and carbonyl-type impurities are reacted in the presence of an HTM to produce phenol and high-boiling derivatives. The phenol may be further purified using conventional separation techniques, such as distillation, to remove the high-boiling derivatives.

Inventors: Fulmer; John W. (Mt. Vernon, IN), Singh; Bharat (Bangalore, IN), Kumbhar; Pramod (Bangalore, IN), Tatake; Prashant Anil (Maharashtra, IN), Hasyagar; Umesh (Bangalore, IN)

Assignee: General Electric Company

International Classification: C07C 37/86 (20060101); C07C 37/00 (20060101); C07C 037/08 ()

Expiration Date: 11/26/2019