Patent ID: 9493387
Filing Date: 2016-11-15
CPC Classification: C07C

Claim Text:
1. A process for making terephthalic acid and/or isophthalic acid in a terephthalic acid and/or isophthalic acid production facility through which water is generated as byproduct and/or added to an oxidizer, said process comprising: (a) oxidizing an aromatic compound in at least one oxidizer of said production facility to thereby produce an oxidizer off-gas and an oxidizer product comprising an aromatic dicarboxylic acid, wherein the at least one oxidizer comprises a bubble column reactor, and wherein the aromatic compound is at least one member selected from para-xylene and meta-xylene, wherein said oxidizing is performed at a temperature of from 140 to 170° C. at a pressure of less than 8 bara; and (b) venting said water from the production facility to the ambient external environment as a vapor, wherein the amount of water vented from said production facility to the ambient external environment as a vapor is at least 0.3 kilograms per kilogram of aromatic compound fed to said oxidizer.