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Chemical absorption (DRI)


Technology Description

Direct reduced iron plants - in which iron ore is reduced to iron without melting, typically using natural gas or coal - could be equipped with chemical absorption-based CO2 capture, a common process operation based on the reaction between CO2 and a chemical solvent (e.g. amine-based). The CO2 is released at temperatures typically in the range 120 °C to 150 °C and the solvent is regenerated for further operation.

Relevance for Net Zero

This technology has good potential for emissions reductions. However, its use is likely to be limited to regions with high availability of inexpensive natural gas. Otherwise the process would likely be more expensive than other potential alternatives based on coal or even hydrogen-based renewables.

Key Countries

Mexico, United Arab Emirates, Venezuela

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