Single compression system and process for capturing carbon dioxide

摘要

The present disclosure provides a single compression system and a process for capturing carbon dioxide (CO2) from a flue gas stream containing CO2 The disclosure also provides a process for regeneration of the carbon dioxide capture media.

主权项

1. A single compression process for capturing carbon dioxide (CO2) from a flue gas stream containing CO2; said process comprising the following steps:
i. directing the flow of the flue gas stream through a first blower to obtain a pressurized flue gas stream with elevated temperature; ii. extracting the heat from the pressurized flue gas stream in a first heat exchanger using circulating thermic fluid to obtain a heated thermic fluid and a cooled pressurized flue gas stream; iii. directing the cooled pressurized flue gas stream to a CO2 adsorber; iv. passing in the adsorber (-A:4-a fluidized lean CO2 capture media to generate a stream comprising rich capture media and flue gas devoid of CO2; v. separating in a first cyclone said rich capture media and said stream of flue gas devoid of CO2; vi. directing the separated stream of flue gas devoid of CO2 to a stack for further treatment; vii. leading said separated rich capture media to a second heat exchanger where it is heated to near regeneration temperature, at least partially, using said heated thermic fluid to obtain a heated rich capture media; viii. feeding said heated rich capture media to a desorber; ix. heating the heated rich capture media in the desorber by circulating said heated thermic fluid to desorb CO2 from the heated rich capture media to generate a mixture of hot lean capture media and CO2 gas; x. separating CO2 gas from the hot lean capture media; and xi. cooling the separated hot and lean capture media in a third heat exchanger for adsorption in the adsorber for reiteration of the process to provide cooled lean capture media.