Most of the current major carbon capture technologies in the cement industry are in the early stages of commercialization. The maturity of carbon capture technologies is expected to drive the large-scale application of low-carbon cement. Liquid chemical absorption technology is currently the only technology that has been commercialized. This technology utilizes the characteristics of acidic gases such as carbon dioxide, uses alkaline solutions to absorb them, and then releases carbon dioxide through heating and other methods. Membrane separation technology and oxygen-rich combustion technology are also in the pilot stage.
Chemical absorption technology, the reaction process is as follows:
CO, (q)→CO, (aq)
2NH, (aq) +H,O(1) +CO, (aq)
→(NH4),CO, (aq)
(NH4),CO, (aq)+H,O(1)+CO, (aq)
2NH,HCO, (aq)
(NH4),CO, (aq)NH,CO,NH (aq)+H,O(1)
As the technology matures and the scale effect is demonstrated, the emission reduction cost of CCUS can gradually be reduced and it will become one of the core technologies for the cement industry to achieve carbon neutrality.
