A chemical absorption technology was adopted for its simplicity and ease of operation and placed in the Fujiwara plant for the small-scale trials. Demonstration trials have been carried out to evaluate the performance of CO
2 separation and capture from cement kiln exhaust gas since January 2019.
Through the trials, stable CO
2 capture performance and recovery of high-purity CO
2 gas were verified, which demonstrated the applicability of the chemical absorption technology to the cement kiln exhaust gas generated in our existing cement plants.
As it was also found that some components in the kiln exhaust gas degraded the CO
2 capture performance, effects of minor components in the kiln exhaust gas on the CO
2 absorption performance and the optimal operation conditions for effective CO
2 recovery should be studied at future scaled-up trials.
View full abstract