| 摘要 |
PURPOSE: A method for removing sulfuretted hydrogen, hydrogen cyanide and ammonia of coke gas is provided to solve the problem of waste-water treatment by using a cyanic compound as the useful chemical material and to solve the problem of waste-gas generated in the progress of oxidizing sulfuretted hydrogen into sulfur. CONSTITUTION: In the method for removing sulfuretted hydrogen, hydrogen cyanide and ammonia of coke gas, a few progresses are included. In the first progress, the ratio of absorbing ammonia is risen by fixing ammonia with a method of oxidizing sulfur by using high pressure oxygen(18) saturation water with injecting high pressure oxygen(18) into a part of absorption fluid recycled to a top(13) for absorbing ammonia and sulfuretted hydrogen from an ammonia distillatory top(5). In the second progress, sulfuretted ammonium generated in oxidizing sulfuretted hydrogen and ammonia generated from the ammonia distillatory top(5) and sulfur generated in a claus progress(15) are added and thiocyanate ammonium is manufactured by absorbing hydrogen cyanide with using sulfuretted ammonium. In the third progress, ammonia steam generated from the ammonia distillatory top(5) is added to hydrogen cyanide and sulfuretted hydrogen reagent before the claus progress(15) and the ratio of absorbing hydrogen cyanide and sulfuretted hydrogen is risen.
|
