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Adiabatic nitration of benzene, comprises reacting nitric acid and benzene in presence of sulfuric acid to nitrobenzene, concentrating the diluted sulfuric acid, cooling and purifying crude nitrobenzene and distilling washed nitrobenzene
Adiabatic nitration of benzene, comprises reacting nitric acid and benzene in presence of sulfuric acid to nitrobenzene, concentrating the diluted sulfuric acid, cooling and purifying crude nitrobenzene and distilling washed nitrobenzene
Adiabatic nitration of benzene, comprises: (a) reacting nitric acid (1) and benzene (2) in a reactor in presence of sulfuric acid (3) to obtain nitrobenzene; (b) separating the hot reaction mixture in a separator; (c) concentrating the diluted sulfuric acid obtained during the reaction; (d) cooling the crude nitrobenzene (5); (e) purifying the crude nitrobenzene in a multi-step washing process; and (f) distilling the washed nitrobenzene to separate the low boilers and remaining water. The separation of crude nitrobenzene and sulfuric acid is carried out under pressure. Adiabatic nitration of benzene, comprises: (a) reacting nitric acid (1) and benzene (2) in a reactor in presence of sulfuric acid (3) to obtain nitrobenzene; (b) separating the hot reaction mixture in a separator; (c) concentrating the diluted sulfuric acid obtained during the reaction; (d) cooling the crude nitrobenzene (5); (e) purifying the crude nitrobenzene in a multi-step washing process; and (f) distilling the washed nitrobenzene to separate the low boilers and remaining water. The separation of crude nitrobenzene and sulfuric acid is carried out under pressure. The pressure is maintained using a pressure maintaining siphon. The benzene and low boiling mixture obtained during the distillation are separated from the remaining water. A portion of the resulting benzene and the low boiling mixture are discharged and the benzene and the low boiling mixture are then recycled for nitration.
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