Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

Philip Edward Gibson

Kenny Randolph Parker

Robert Lin

Ronald Buford Sheppard

Ruairi Seosamh O'Meadhra

Howard Wood Jenkins, Jr

Alan George Wonders

Charles Edwan Sumner, Jr

Marcel De Vreede

Thomas Earl Woodruff

Brian Edison Maxwell

Raymond Elbert Fogle, Iii

Martin De Boer

Eric Jackson Fugate

Johannes Wilhelmus Sluijmers

Ernest William Arnold, Iii

Ardie Heijblom

Kenny Rendolph Parker

Arnoldus Leunis Jan Heijblom

Disclosed are methods and apparatus for use in producing a low-moisture carboxylic acid wet cake. Such a low-moisture wet cake can comprise less than about 12 weight percent liquid and can be achieved by washing a carboxylic acid wet cake in a product isolation zone with a wash stream having an initial temperature of at least about 40&#xb0; C.

Methods and apparatus for producing a low-moisture carboxylic acid wet cake

Disclosed is a method and apparatus for drying a wet cake in a carboxylic acid production process. The method comprises employing a contact dryer for drying solid particles of carboxylic acid, where the solid particles can have a residence time of less than about 7 minutes in the dryer and an exit temperature of less than about 250&#xb0; C. upon exiting the dryer.

Method and apparatus for drying carboxylic acid

A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. This invention also relates to a process and the resulting compositions for removing catalyst from a carboxylic acid composition to produce a post catalyst removal composition.

Enriched terephthalic acid composition

Disclosed is a process and apparatus for treating a purge stream in a carboxylic acid production process. The process employs a purge process that allows for the separation of oxidation byproducts into benzoic acid and non-benzoic acid oxidation byproducts, thus providing flexibility in the treatment and use of such oxidation byproducts.

Versatile oxidation byproduct purge process

Process to produce an enriched composition through the use of a catalyst removal zone and an enrichment zone

Process to produce an enrichment feed

Process to produce a post catalyst removal composition

Process to produce an enriched composition

Disclosed are processes and apparatus for producing a carboxylic acid. The processes employ a concentration section disposed before and/or after a product isolation section, which allows for oxidation byproducts produced in the process to exit the product isolation section with the isolated carboxylic acid product and/or to be combined with the isolated carboxylic acid product downstream of the product isolation section at a rate of at least about 15 percent of the net make rate of the oxidation byproducts in the production process.

Carboxylic acid production process

Growing community of inventors

Kingsport, TN, United States of America

Philip Edward Gibson