A METHOD AND AN APPARATUS OF MANUFACTURING THE HIGH PURITY NH3

摘要

PURPOSE: A method and an apparatus for manufacturing high purity ammonia are provided to continuously produce the ammonia and improve the purity of the ammonia based on a simply facility by installing three step distillation towers. CONSTITUTION: Low purity liquefied ammonia is introduced into a second step distillation tower composed of a reboiler(13), a column(14), and a cooler(15). Water and heavy metal from the low purity liquefied ammonia are moved to the column(18) of a first step distillation tower. The water and the heavy metal are eliminated. The ammonia through the first step distillation tower is introduced into the second step distillation tower. The ammonia passes through the second step distillation tower in order to eliminate low volatile materials from the ammonia. The ammonia is discharged through the discharging hole of a third step distillation tower. The ammonia is liquefied by a cooler(25) in the third step distillation tower and is transferred to a storing tank.