With the growing concern about environmental issues including high CO₂ emission, which is the main contributor to global warming resulting in climate change, CO₂ utilization technologies have received much attention. Among diverse technologies, renewable methanol synthesis using H₂ generated from the water electrolysis and the CO₂ captured from various industrial processes as well as the atmosphere has received significant attention. In this context, the technical and economic feasibility analysis of renewable methanol synthesis was conducted in this study. Using a commercial process simulation program, Aspen HYSYS®, parametric studies were conducted to investigate the effects of diverse operating parameters, such as the reaction pressure, temperature, and H₂/CO₂ ratio, on the technical performance of this process. Under the optimum conditions of 100 bar and 493 K derived from thermodynamic studies, an economic analysis was performed to estimate the unit methanol production costs at different methanol production capacities using itemized cost estimation, sensitivity analysis, and predictive cost analysis. Predictive cost analysis was conducted to determine how the unit methanol production cost could be rendered reasonable compared to the existing one, which indicated that decreasing the renewable H₂ production cost as well as increasing in the CO₂ tax credit for a methanol production capacity of 100 ton per day would make the renewable methanol synthesis an economically feasible process.

随着人们日益关注包括高CO ₂排放在内的环境问题，高CO ₂排放是导致全球变暖导致气候变化的主要因素，因此CO ₂利用技术受到了广泛关注。在各种技术中，利用水电解产生的H ₂和CO _2进行可再生甲醇合成从各种工业过程以及大气中捕获的污染物受到了极大的关注。在此背景下，本研究进行了可再生甲醇合成的技术和经济可行性分析。使用商业过程模拟程序AspenHYSYS®，进行了参数研究，以研究各种操作参数的影响，例如反应压力，温度和H ₂ / CO ₂比率，取决于此过程的技术性能。在热力学研究得出的100 bar和493 K的最佳条件下，进行了经济分析，以使用逐项成本估算，敏感性分析和预测成本分析来估算不同甲醇产能下的单位甲醇生产成本。进行了预测性成本分析，以确定与现有的相比，如何使单位甲醇的生产成本合理化，这表明，对于100吨的甲醇生产能力，降低可再生H _2的生产成本以及增加CO ₂税收抵免。每天每吨将使可再生甲醇合成成为经济上可行的过程。