Abstract: The "dual carbon" policy requires refining and chemical companies to pursue the path of green and low-carbon transition. Carbon capture, utilization, and storage (CCUS) technology can help them to achieve this goal. This study selected ethylene carbonate as the target product for process retrofit. The carbon emissions of the facility before and after the retrofit were calculated using activity data and emission factors. This paper conducted an analysis from such two aspects as carbon emission reduction effectiveness and economic viability of the carbon mitigation project. This retrofit not only achieved carbon emission reduction, but also generated additional profits for enterprises, thereby providing a viable development strategy for corporate transformation and upgrading.

Key words: carbon capture utilization and storage/CCUS, refinery plant, ethylene glycol/ ethylene oxide, carbon reduction retrofit, carbon emission reduction evaluation