Coal-tar and Ammonia: Ammonia

absorbed according action added alkali allowed ammonia ammoniacal liquor ammonium chloride ammonium sulphate amount apparatus aqueous atmospheres boiling bottom calcium carbonate carried causes cent chamber Chem chloride coal coke column completely compounds concentrated containing continuous converted cooling crystals cyanide decomposed described dilute dioxide direct dissolved distillation employed escape evaporation excess filter fixed formation formed furnace gas-liquor gases give heating hydrogen increased iron latter lead lime liquid liquid ammonia manufacture means metallic method mixed mixture nitrate nitride nitrogen obtained ordinary oxide passed patent pipe plant precipitate prepared present pressure produced pure quantity reaction recovered remaining removed retorts salt saturator separated shows soda sodium solution steam substances sulphide sulphuric acid taken takes temperature tons treated tube usual vapours vessel volatile washing yield