AC3 — a simple advanced process

Carbon capture is a demanding separation process. Conventional solutions are complex, costly and have high operating costs. The A3C process is radically different, using an elegant cryogenic separation, avoiding complexity while minimising operating costs and environmental hazards.

The two step process uses intensive cooling in successive circulating beds of fine metal beads. The first cools the process gas and dries it, while the second frosts the carbon dioxide out of the gas stream, recovering it in a separate section.

Carbon dioxide separation step

Close integration of the heating and cooling cycle of the moving bed with an advanced cryogenic refrigeration system delivers outstanding energy performance.

Minimal site interfaces for electricity and process gas to series produced compact standard modules will simplify application, cutting costs of manufacture and installation.

Patented by PMW Technology, the process has been validated in a 12 month feasibility study funded by Innovate UK with the Universities of Chester and Sheffield and industry partners WSP, DNV GL and Costain. The key separation step has been demonstrated in the laboratory and a process pilot is currently being designed and built at the University of Chester.

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