Adsorption process development for CO2 capture
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Purpose
The work aims to develop and test novel adsorption cycles/processes and adsorbents for capture of CO2 from a variety of synthetic flue gas feed stocks.
It aims to determine the impact of process parameters (cycle time, cycle configuration, temperature) on the CO2 capture efficiency and use lab/pilot scale data to validate simulation tools. Sufficient process performance data (including power requirements) will be determined from models for the adsorption processes developed to permit technical and economic assessment of viability of adsorption technology.
The project also aims to evaluate the effect of process impurities on system performance to enable realistic assessment of the application to pre- and post-combustion capture.
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Summary
This project has examined the application of vacuum swing adsorption to capture of CO2 primarily from post combustion flue gases. Since its inception in 2004, we have developed a pilot scale PSA unit and used it to generate engineering data to evaluate the technical feasibility of the process. In addition, a large number of simulations have been conducted and additional models developed to permit economic assessment of the technology.
With the technical feasibility established, attention is now turning to examining engineering issues associated with contaminants and moisture. In addition, novel cycles and energy recovery aspects must be examined with a view to reducing capture cost to reach the target of $20/t avoided.
