Patent ID: 8623307

Claim:
A method of removing non-volatile compounds from a circulating ammoniated solution stream of a CO2 removal system, the system being arranged to remove carbon dioxide (CO2) from a gas stream by bringing the gas stream into contact with the circulating ammoniated solution stream such that CO2 is removed from the gas stream by the circulating ammoniated solution stream, wherein the CO2 removal system includes: a CO2 capture arrangement comprising a CO2 absorber configured to receive the gas stream containing CO2 and contacting the gas stream with the ammoniated solution stream such that CO2 is removed from the gas stream by the circulating ammoniated solution stream to form a CO2 rich ammoniated solution stream; and a regeneration arrangement comprising a regenerator configured to receive the CO2 rich ammoniated solution stream from the CO2 capture arrangement, and to separate CO2 from the ammoniated solution to form a CO2 lean ammoniated solution stream, and to return said CO2 lean ammoniated solution stream to the CO2 capture arrangement; said method comprising: providing a portion of the circulating ammoniated solution stream having non-volatile compounds into a gas-liquid separating device; separating the portion of the circulating ammoniated solution stream into an ammonia rich gas phase and a liquid phase comprising the non-volatile compounds; and providing the ammonia rich gas phase into the circulating ammoniated solution stream provided to the regenerator.