METHOD OF RECOVERY OF AMMONIA FROM REACTOR EFFLUENT AND METHOD OF RECYCLING

摘要

PROBLEM TO BE SOLVED: To provide a method of recovery of ammonia from reactor effluent and a method of recycling. SOLUTION: Gaseous reactor effluent containing ammonia is brought into contact with the first water ammonium phosphate solution so as to absorb practically all ammonia to generate the second water ammonium phosphate solution rich in ammonium ion. The second water ammonium phosphate solution is brought into contact with stripping gas substantially free from carbon dioxide to eliminate volatile impurity. The second ammonium phosphate solution is heated at a high temperature enough to return quantity of ammonium ion same as in the first water ammonium phosphate solution, then ammonia is recovered.