Recycle TSA regen gas to boiler for oxyfuel operations

摘要

NO2 may be removed from a carbon dioxide feed gas comprising NO,, and at least one "non-condensable" gas as contaminants by passing the feed gas at a first elevated pressure through a first adsorption system that selectively adsorbs at least NO2 5 to produce at least substantially N02-free carbon dioxide gas. The adsorption system is at least partially regenerated using a carbon dioxide-rich gas recovered from the substantially N02-free carbon dioxide gas after purification. The invention has particular application in removing NO,, and water from flue gas generated by oxyfuel combustion. 34E101 401 M101 E103 E102----- C102 6256 64 V102 76 86 4 t- b C103 36- K101 y -