Patent ID: 8236921

Claim:
An integrated process for simultaneously producing at least two different dicarboxylic acids, said process comprising: (a) oxidizing a first aromatic compound in a first oxidation reactor to thereby produce a first dicarboxylic acid product and a first vapor; (b) oxidizing a second aromatic compound in a second oxidation reactor to thereby produce a second dicarboxylic acid product and a second vapor, wherein the production rate of said first dicarboxylic acid product from said first oxidation reactor is at least 5 times greater than the production rate of said second dicarboxylic acid from said second oxidation reactor; and (c) introducing at least a portion of said first vapor and at least a portion of said second vapor into a common solvent recovery system; wherein said first aromatic acid product is terephthalic acid; wherein said second aromatic acid product is isophthalic acid.