نوع مقاله : مقاله پژوهشی
نویسندگان
1 سازمان پژوهش علمی و صنعتی ایران
2 دانشکده علوم، دانشگاه یاسوج، یاسوج، ایران
3 1. سازمان پژوهش‌های علمی و صنعتی ایران، تهران، ایران
4 دانشکده مهندسی مواد و متالورژی دانشگاه آزاد واحد علوم و تحقیقات، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The consumption of carbon dioxide (CO₂) from cement factories and petrochemical processes has led to environmental issues such as climate change and the greenhouse effect, which pose serious risks to human life. Carbon capture, utilization, and storage (CCUS) technologies are one of the effective approaches in this area. This study introduces suitable sources for the integrated utilization of CO₂ gas and hydrogen produced through water electrolysis using renewable energy, such as solar power. CO₂ hydrogenation is one of the most advanced technologies for CO₂ consumption. The sustainability assessment of this process requires a comprehensive analysis of the primary material sources, especially CO₂ and H₂. This paper presents a multi-criteria framework for identifying the most suitable CO₂ and H₂ sources for conversion processes. Various CO₂ sources (from power plants to ethanol fermentation) and H₂ sources (from dedicated production to by-product hydrogen) were evaluated based on environmental, economic, and technical criteria. Then, using the Cu/Zn/Al₂O₃ catalyst, green methanol was produced. The reaction of three moles of hydrogen and one mole of CO₂ at 250°C and 70 bar pressure resulted in the production of green methanol. The results showed that CO₂ from steam methane reforming, the iron and steel industries, ethylene oxide production, and other high-concentration point sources are the best options for supplying the required CO₂ for this reaction in terms of sustainability. Additionally, it was found that H₂ is more sustainable when produced as a by-product of various processes or produced at low cost through water electrolysis using solar or wind energy. The methanol production efficiency was 70%, and the conversion of hydrogen and CO₂ gases to methanol was 20%.
کلیدواژه‌ها [English]
)