PLANT FOR PRODUCTION OF AMMONIUM NITRATE Russian patent published in 2012 - IPC C01C1/18 

FIELD: process engineering.

SUBSTANCE: invention relates to inorganic chemistry, namely, to production of ammonium nitrate using neutralisation heat apparatuses (NHA) exploiting heat released in mixing nitric acid with gaseous ammonium. Proposed plant comprises NHA apparatus 1 with inner barrel 4, mixing pumping circuit , acid and gas feed and finished product discharge pipelines 19, 20, 21. NHA apparatus bottom is communicated with pumping circuit suction pipeline 9 while inner barrel 4 is communicated with delivery pipeline 10. Inner barrel 4 is arranged at apparatus bottom without face clearance. External tubular mixers 12, 13 are arranged in delivery pipeline 10 of circulation pump 11 upstream of apparatus 1 to mix reaction components. Ammonium suction pipeline 20 is connected to mixer 12 while nitric acid suction pipeline 19 is connected to mixer 13. Mixers 12, 13 may be replaced by integral injector double-suction mixer. Finished product is discharged via pipeline 21 connected to delivery pipeline 10 upstream of mixers 12, 13. Inner barrel 4 extends beyond apparatus 1 and is provided with deevaporation plate arranged at its top edge.

EFFECT: higher efficiency, reduced content of acid and nitrate in off vapors.

12 cl, 8 dwg, 1 ex