学 术 报 告
CO2 Utilization Technology in KRICT:CO2 Reforming and CO2 Hydrogenation
Prof. Ki-Won Jun
Korea Research Institute of Chemical Technology, Korea
Utilization of CO2 into by chemical conversion to clean fuels and bulk chemicals has attracted much attention in terms of the necessity of large-scale reduction of greenhouse gas emissions. For that, in KRICT, we are doing effort to develop the technologies for methanol production and hydrocarbons employing CO2 reforming and hydrogenation.
We have developed a CO2-utilizing Gas-to-Methanol (CGTM) process, which is composed of CO2/steam-mixed reforming and methanol synthesis via CO2 and CO hydrogenation. Experimental apparatus at different scales, ranging from lab to demonstration, have been established to pursue an efficient CGTM process with enhanced energy efficiency and reduced CO2 emissions. The proposed CGTM process employs a proprietary coke-resistant Ni-based catalyst in the reforming section, which is very stable under a 1000-h accelerated stability test. Based on the results of the process simulation and optimization obtained by using Aspen Plus, a CGTM demonstration plant with a methanol-production capacity of 10 t/day is designed and constructed, which comprises a reforming section (co-feeding CO2 into the reformer), a methanol synthesis section, and a recycling section. During the continuous operation for 1000 h, the CGTM demonstration plant exhibited a satisfactory performance, which is in good agreement with the design values. The overall thermal efficiency is shown to be superior to that of the conventional Gas-to-Methanol (GTM) processes, and the CGTM process is economically feasible given that the NG price, methanol price, and the plant scale are located in the following range of 1–5 $/MMBTU, 350–500 $/Mt, and 2500–5000 TPD, respectively. Furthermore, the proposed CGTM process would be even more competitive in the case of a higher carbon tax.
Dr. Ki-Won Jun obtained his Ph.D. from the Korea Advanced Institute of Science and Technology. He is the leader of “Next Generation Carbon Upcycling Project”, Korea Research Institute of Chemical Technology (KRICT). His research interests focus on catalysis for CO2 utilization and catalysis and process for alternative chemicals/fuel research.