Carbon capture and utilization (CCU) technology can be used to reduce carbon dioxide (CO₂) emissions and mitigate climate change. CCU technology efficiencies and regional characteristics were evaluated by integrating process simulation and carbon footprint estimation to determine the optimal social implementation scenarios from the CO₂ emissions reduction perspective. Methanol (MeOH) was chosen as the CCU product, and the energy efficiency of MeOH synthesis under various conditions was assessed. For social implementation scenarios, location of each technology, capacity of renewable energy and H₂ manufacturing method, process configuration, CO₂ source, and separation/recovery technology were used as conditions for the evaluation. Based on 11 cases with varying conditions, the partial oxidation and dry reforming of CH₄ was determined to exhibit the greatest CO₂ emission reduction potential. However, when considering renewable energy expansion, direct MeOH synthesis exhibited a greater CO₂ reduction potential. Based on the results, CCU optimal social implementation scenarios evaluation guidelines were determined. These guidelines can be implemented at a large scale to determine the viability and effectiveness of CCU technologies.

碳捕获和利用（CCU）技术可用于减少二氧化碳（CO ₂）排放并缓解气候变化。通过集成过程模拟和碳足迹估算来评估CCU技术效率和区域特征，以便从减少CO ₂排放的角度确定最佳的社会实施方案。选择甲醇（MeOH）作为CCU产物，并评估了各种条件下MeOH合成的能量效率。对于社会实施方案，每种技术的位置，可再生能源的产能和H _2的制造方法，工艺配置，CO ₂来源和分离/回收技术被用作评估的条件。基于11个条件不同的案例，确定了CH ₄的部分氧化和干重整过程显示出最大的CO ₂减排潜力。但是，考虑可再生能源膨胀时，直接合成MeOH表现出更大的CO ₂还原潜力。根据结果​​，确定了CCU最佳社会实施方案评估指南。这些准则可以大规模实施，以确定CCU技术的可行性和有效性。