The Modeling of CO2 Conversion and Capture Techniques Using Aspen Plus

Progressively, in day-to-day life, the amount of carbon dioxide emitted into the atmosphere is increasing, thereby increasing the carbon footprint. It has become a serious issue that requires our attention. Carbon dioxide capture and conversion can be a solution to this issue. This is a process where large amounts of carbon dioxide are captured from various sources using different capture techniques and later converted into useful products. This work focuses on analyzing and comparing different carbon dioxide capture techniques and finding the most effective capture technique. This work also focuses on converting the captured CO2 into methanol, analyzing the methanol production plant by making changes in the physical, thermodynamic, and kinetic properties of the process, and finding the most efficient process conditions. Sensitivity analysis was carried out on different CO2 capture techniques, such as post-combustion capture, precombustion capture, oxy-fuel combustion technique, direct air capture method, chemical looping method, and downstream to the conversion of methanol from carbon dioxide capture, to find the effect of different parameters, such as pressure, temperature, energy requirement, and other properties, on the amount of CO2 captured and methanol conversion. The most effective CO2 capture and the methanol plant were then fitted into a thermal power generation plant, which is run by coal, in an attempt to achieve zero discharge. ASPEN PLUS software was used to simulate the problem.