Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

Bryan Wayne Davenport

Charles Edwan Sumner, Jr

Brent Alan Tennant

Gino Georges Lavoie

Alan George Wonders

Robert Thomas Hembre

Marcel De Vreede

David Lange

Joseph Nathaniel Bays

Daniel Burts Compton

Thomas Richard Floyd

Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

Optimized liquid-phase oxidation

Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125&#xb0; C. to about 155&#xb0; C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the weight ratio of cobalt to manganese in the reaction mixture is from about 10 to about 400. The processes provide improved conversion, while reducing the formation of carbon oxides and other by-products.

Processes for producing aromatic dicarboxylic acids

Growing community of inventors

Columbia, SC, United States of America

Bryan Wayne Davenport