Process for refining aqueous acid mixtures utilized in nitration

Details Process for refining aqueous acid mixtures utilized in nitration Process for refining aqueous acid mixtures utilized in nitration

1979-02-02

1981-03-24

Kyle, Deborah L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

423523, 423531, C07C 7910

Patent

active

042579864

ABSTRACT:
This invention relates to an improvement in a process for the manufacture of a nitroaromatic compound produced by the mixed sulfuric-nitric acid nitration method. The improvement resides in the refining of the aqueous acid mixture and comprises the following sequential steps: (a) contacting the mixed aqueous acid mixture, after nitration, with an oxidizing or a reducing agent under conditions effective for removing contaminant nitrous acid; (b) contacting the aqueous acid mixture in step (a) with feed aromatic compound to remove contaminant organics and residual nitric acid and then, if necessary, (c) contacting the remaining acid mixture with sufficient oxidizing agent under oxidizing conditions to remove residual organic components.

REFERENCES:
patent: 2355702 (1944-08-01), Brooks
patent: 2773911 (1956-12-01), Dubois et al.
patent: 2849497 (1958-08-01), Buchanan
patent: 2971819 (1961-02-01), Antelman
patent: 3204000 (1965-08-01), Samuelsen
patent: 3856673 (1974-12-01), La Mater
patent: 4155989 (1979-05-01), Miller
"Removal of Nitrose from Sulfuric Acid", Chem. Abstracts, vol. 53 (1959) Abstract #8557d.

Affiliated with

Also associated with

Rating

Process for refining aqueous acid mixtures utilized in nitration 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 refining aqueous acid mixtures utilized in nitration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for refining aqueous acid mixtures utilized in nitration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2407959