Manufacture of Ammonium Nitrate: The Use of a Pipe Reactor and of a Total Air Recycle System for Prilling Tower Pollution Control

The paper describes the use of a pressure pipe reactor in the manufacture of ammonium nitrate liquor of concentration above 95% by feeding it with 50-53% nitric acid and ammonia. The second part describes a system to eliminate pollution of prilling towers by total recycling of the air. The system applies to dense and porous ammonium nitrate prills.