PROCESS FOR REDUCING THE CONCENTRATION OF CARBON DIOXIDE IN AN EXHAUST GAS

摘要

The invention provides a process for reducing the concentration of carbon dioxide in a gas comprising carbon dioxide and water vapour (preferably a flue gas, more preferably a cement plant flue gas) which process comprises contacting the gas with a particulate solid, which solid comprises an alkaline earth metal oxide or hydroxide and a promoter selected from an alkanolamine; an unsubstituted or substituted piperazine; an unsubstituted or substituted morpholine; and a polyethyleneamine oligomer.