Process for continuous preparation of terephthalic acid

Details Process for continuous preparation of terephthalic acid Process for continuous preparation of terephthalic acid

1974-03-25

1976-04-13

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5133

Patent

active

039504093

ABSTRACT:
An improved process for continuously preparing terephthalic acid by a catalytic liquid-phase oxidation which comprises recycling a part of the mother liquor of the oxidation product to the catalytic liquid-phase oxidation zone either as such or after concentration, concentrating the remainder of the mother liquor, until the amount of acetic acid in the resulting bottoms becomes not more than 5% by weight based on the weight of the residual bottoms and the amount of benzoic acid bottoms becomes not less than 15% by weight based on the weight based on the weight of the residual bottoms, contacting the bottoms in the hot and molten state with 2 to 5 times their weight of water, and rapidly cooling the bottom to a temperature of not more than 50.degree.C., separating an aqueous solution containing the catalyst from the resulting granular solid mixture and recycling the aqueous solution to the catalytic liquid-phase oxidation zone.

REFERENCES:
patent: 2964559 (1960-12-01), Burney et al.

Affiliated with

Also associated with

Rating

Process for continuous preparation of terephthalic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for continuous preparation of terephthalic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for continuous preparation of terephthalic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-752225