Process and system for cleaning a gas stream

In this study, the authors describe the process and system for cleaning a gas stream. This application relates to a system and a process for gas cleaning wherein (a) part of the carbon dioxide contained in the gas stream removed by bringing the gas stream into contact with a first ammoniated liquid; (b) a further part of the carbon dioxide contained in the gas stream removed by bringing the gas stream partly depleted in carbon dioxide into contact with a second ammoniated liquid to form a carbon dioxide depleted gas stream enriched in ammonia; and (c) at least a part of the ammonia of the gas stream removed by bringing the carbon dioxide depleted gas stream enriched in ammonia into contact with the liquid enriched in carbon dioxide formed in step (a) to absorb into the liquid ammonia from the gas stream, such that a carbon dioxide depleted gas stream at least partly depleted in ammonia and a liquid enriched in ammonia were formed, wherein the liquid enriched in ammonia is the first ammoniated liquid used in step (a).

Authors: Dube, Sanjay Kumar; Muraskin, David James ;Full Source: Application 2011/27,464, 15 Feb 2011; 13pp (English) ;