METHOD OF SEPARATING ACIDIC GAS AND AMMONIA FROM DILUTE WATER SOLUTION CONTAINING THESE

摘要

A process is described for the removal of acid gases and ammonia from dilute aqueous solutions. This is achieved by two separate and successive distillations. In the first distillation, substantially all of the acid gases and free ammonia are removed. In the second distillation, substantially all of the fixed ammonia is removed. Exemplary aqueous solutions are waste waters from coke oven and coal conversion plants.