Bi-objective Synthesis of CCUS System Considering Inherent Safety and Economic Criteria

Carbon capture, utilization, and storage (CCUS) is a carbon management strategy to mitigate CO 2 emissions from point sources. It is a crucial technology for local low-carbon development. Regional source-sink models have been developed based on the carbon life cycle. In this work, a bi-objective mixed-integer nonlinear programming model is developed for optimizing the carbon management network of a regional CCUS system. The goal is to develop a set of solutions that achieve various trade-offs between economic and safety criteria, with the latter based on overall annual risk. The model considers different point sources of CO 2 emissions, multiple capture technologies, and four utilization sinks (e.g., greenhouse, urea synthesis, methanol production, and enhanced oil recovery). The model was applied and demonstrated in Dongying, China.