METHOD AND APPARATUS FOR IMPROVED DISTILLATION OF AMMONIA FROM WEAK AMMONIA LIQUOR

摘要

METHOD AND APARATUS FOR IMPROVED DISTILLATION OF AMMONIA FROM WEAK AMMONIA LIQUOR Fouling of an ammonia still, used for removal of ammonia from weak ammonia liquor derived from a coal coking operation, is alleviated by pre-precipitating insoluble calcium salts form the ammonia liquor by treatment of the liquor with lime prior to introduction into a singleleg still.