The calciner utilizes a high-temperature reactor in the thermochemical reduction of carbon dioxide, where at approximately 1,000 degrees Celsius, carbon dioxide decomposes into carbon monoxide through the influence of catalysts and reagents. Heated reagents (black spheres) and carbon dioxide (blue spheres) are fed into the reactor. The reaction produces ultra-pure carbon monoxide (yellow), which can be used as fuel in combustion processes or further refined into synthetic hydrocarbons with the addition of electrolytic hydrogen. Activated reagent (light grey) is also removed from the reactor, which can either be recycled back into the reactor or utilized as a valuable product in other applications.

Carbon looping at cement production

The following animation illustrates how carbon dioxide reduction can be integrated into cement production. The presentation shows how flue gas generated during cement manufacturing is directed to a carbon capture process, which produces a purified carbon dioxide stream (blue spheres) that is fed into the reduction unit. In the reactor, carbon dioxide is converted into carbon monoxide (yellow), and the resulting gas is fed back into the cement production process as fuel. During calcination, carbon monoxide reacts with combustion air, resulting in the formation of carbon dioxide once again. The animation demonstrates how carbon dioxide and carbon monoxide circulate within the process and how the reduction reactor generates fuel gas from the carbon dioxide emissions produced during cement manufacturing.

Carbon looping at quick lime production

The following animation illustrates how carbon dioxide reduction can be integrated into the production of quick lime. The presentation shows how the carbon dioxide stream (blue spheres) generated during the calcination process is purified and directed to the Calciner reduction reactor. In the reactor, carbon dioxide is converted into carbon monoxide (yellow), and the resulting gas is fed back into the calcination process as fuel. During the calcination process, carbon monoxide combusts with combustion air (cyan), producing carbon dioxide again. The animation demonstrates how carbon dioxide and carbon monoxide circulate within the process and how the Calciner reactor regenerates fuel from CO2 emissions using electricity.