Process for the production of dinitrotoluene

Details Process for the production of dinitrotoluene Process for the production of dinitrotoluene

1985-03-12

1987-05-05

Miller, Edward A.

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

Organic compounds

Oxygen containing

568939, C07C 7910

Patent

active

046634908

ABSTRACT:
In the production of dinitrotoluene by a two-stage reaction of toluene with nitric acid in the presence of sulphuric acid, wherein toluene is nitrated to mononitrotoluene in the first stage using spent acid from the second stage, and the mononitrotoluene is nitrated to dinitrotoluene in the second stage using concentrated spent acid from the first stage, the improvement which comprises concentrating spent acid under vacuum in an indirectly-heated evaporator and feeding mononitrotoluene into the superheated vapor of the evaporator.

REFERENCES:
patent: 2256999 (1941-09-01), Castner
patent: 3178481 (1965-04-01), Hauze
patent: 4091042 (1978-05-01), Alexanderson et al.
patent: 4274910 (1981-06-01), Forter et al.
patent: 4367347 (1983-01-01), Sawicki
patent: 4496782 (1985-01-01), Carr
patent: 4600702 (1986-07-01), Schumacher

Affiliated with

Also associated with

Rating

Process for the production of dinitrotoluene 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 the production of dinitrotoluene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of dinitrotoluene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2400452