Method of treating natural gas with high carbon dioxide concentration using aqueous ammonia

摘要

A process for the treatment of a high-pressure hydrocarbon gas stream to make a carbon dioxide-rich product stream and a treated hydrocarbon gas product stream by contacting within a contactor the high-pressure hydrocarbon gas stream with a solvent containing aqueous ammonia and, optionally, a reaction product of a liquid ammonia-carbon dioxide-water system. A fat solvent containing precipitated solids is withdrawn from the contactor and is regenerated whereby carbon dioxide is released and the fat solvent and a lean solvent is provided for reuse as the solvent.