Process for cleaning at various stages of coruporentes acids from gas, Coke Oven gas by Ammonia washing Cycle.

摘要

Process for washing in various stages of acidic components from gases, especially from Coke Oven gas by Ammonia washing Cycle. In the released Ammonia washing is linked to the acid Components by Treatment of acidification.The Condensed Ammonia decomposes into a separator for high pressure Steam at a pressure of 10 to 25 bars in Pure Ammonia condensation, part of which was reintroduced as reflux in the steam Ejector, and in small amounts of water containing Ammonia.The Liquid Ammonia is returned to the washing process in an amount such that the molar ratio of acid components, especially the H S, with regard to Ammonia in the gas to be cleaned is 1: 2.5 to 1: 3.5. In the first phase of the washing is 60% to 90% of the total Ammonia and returned in the second phase is performed in part with the washing Water discharged in the process.