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Chemical absorption (full capture rates)


Technology Description

Chemical absorption of CO2 is 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. It can be applied to kilns, the main unit producing clinker for cement production.

Relevance for Net Zero

CO2 capture and storage is a key technology to reduce otherwise difficult to avoid process emissions from cement production. Most alternative CCS technologies are more costly and/or at earlier stages of development, while other lower emission alternatives for producing cement, such as alternative binding materials, face challenges such as low TRL or limitations in raw material availability.

Key Countries

Norway, Canada, India, China, Sweden, United Kingdom

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