Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

Eastman-kodak Company

Gropo Petrotemex, S.a. De C.v.

Grupo Pretrotemex, S.a. De C.v.

Lee R Partin

Kenny Randolph Parker

Mesfin Ejerssa Janka

Ashfaq Shahanawaz Shaikh

Alan George Wonders

Wayne Scott Strasser

Marcel De Vreede

Bradford Russell Bowers

Michael Charles Morrow

Paula Moody

Puneet Gupta

Charles Edwan Sumner, Jr

David Lange

Melvin Glenn Mitchell

Robert Lin

Howard Wood Jenkins, Jr

Shane Kipley Kirk

Jason Christopher Jenkins

Tim J Frederick

Thomas Shanks

Marcel deVreede

Charles Sumner

Ronald Buford Sheppard

Alan Kent Wilson

James John Krutak, Sr

Kevin John Fontenot

Fred D Barlow, Jr

Victor H Agreda

Richard D Neal

Raymond Elbert Fogle, Iii

Martin De Boer

Ashfaq Schahanawaz Shaikh

Thomas Vernon McCray

Edwin Taylor Boyd

Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.

Furan-2, 5-dicarboxylic acid purge process

Furan-2,5-dicarboxylic acid purge process

A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130&#xb0; C. to 225&#xb0; C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi.

Purifying crude furan 2,5-dicarboxylic acid by hydrogenation and a purge zone

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

Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH-furfural where R is alkyl, cycloalkyl, or aryl), 5-HMF ethers (5-R'OCH-furfural where R&#x2032; is alkyl, cycloalkyl, or aryl), 5-alkyl furfurals (5-R&#x2033;-furfural where R&#x2033; is alkyl, cycloalkyl, or aryl), mixed feedstocks of 5-HMF and 5-HMF esters, mixed feedstocks of 5-HMF and 5-HMF ethers, and mixed feedstocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA.

Oxidation process to produce a purified carboxylic acid product via solvent displacement and post oxidation

A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130&#xb0; C. to 225&#xb0; C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA).

Growing community of inventors

Kingsport, TN, United States of America

Lee R Partin