Post-combustion capture and regeneration of CO2 : Component configurations

The separation of carbon dioxide (CO2) from flue gas is a highly energy-intensive operation and requires a large capital investment. In a post-combustion capture system, the process takes place in two stages: CO2 is captured from the flue gas using chemical solvents or sorbents, and it is regenerated before compression and transportation to storage[1], [2].The objective of this work is to design configurations of separation of CO2 that can be adapted in an industrial cluster with various emission sources. Firstly, an in-depth literature review was carried out to understand several topics under CO2 capture methods, solvent-based CO2 separation and its components, carbon dioxide capture and transport infrastructures, and transport costs through pipelines and trucks. The configurations were developed based on different locations of capture and regeneration of CO2 with respect to the emission source in an industrial cluster.Three primary configurations for solvent-based post-combustion separation of CO2 were identified: (a) Onsite capture, regeneration and temporary storage, in which CO2 is captured, regenerated and stored temporarily at the source of emission; (b) Onsite capture offsite regeneration and storage, in which CO2 is captured from the flue gas locally at the source of emission and the solvent is regenerated and stored temporarily elsewhere; and (c) Offsite capture and regeneration, in which CO2 is captured, regenerated and stored temporarily in a location away from the source of emission. Overall, this paper explores various component configurations for post-combustion CO2 separation and temporary storage process with respect to the location of the source of emission. Further understanding of the costs for CO2 separation from each configuration and the viability of implementing them in the real world is required