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US 9,573,120 B2Granted
Furan-2,5-dicarboxylic acid purge process
AssigneeEastman Chemical Company
InventorsKenny Parker, Mesfin Janka, Ashfaq Shaikh, Lee Partin
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Abstract
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.
Claims6
A process to produce a purge mother liquor stream said process comprising:
- (a) contacting a mother liquor stream in a solvent recovery zone to form an impurity rich waste stream;
- wherein said mother liquor stream is produced in a 5-HMF oxidation process to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic;
- (b) routing a portion of said impurity rich waste stream to a solid-liquid separation zone to form a purge mother liquor stream.
Dependencies are inferred from the claim text.