Used 60 MM SCFD Carbon Dioxide removal plant (Benfield Low Heat process) built in 1997. The process is designed to treat 60MM SCFD of incoming natural gas with a hot 35% potassium carbonate solution to remove the remaining CO2 from an upstream Ucarsol process. This gas treating process removes CO2 down to a 1.2 mol % level. The incoming gas is treated by 2,770 gpm of 35% potassium carbonate at 218 degF.
The advantage of the Benfield Low Heat process over an amine process is the lowest possible energy consumption by requiring approximately 50% less duty than a typical amine process.