(90b) Advancing Chemical Industrial Decarbonization through System Integration for CO2 Utilization

The utilization of carbon dioxide (CO₂) to produce chemical products stands as a pivotal strategy in achieving chemical industrial decarbonization, addressing both environmental concerns and industrial sustainability. By harnessing CO2 as a feedstock, industries can mitigate their carbon footprint by effectively recycling a greenhouse gas into valuable commodities. This approach not only reduces CO2 emissions but also pay the way for cleaner and more resource-efficient manufacturing processes. In this paper, three well-known process systems have been effectively and efficiently integrated to accomplish the CO2 utilization based on green hydrogen to produce valuable hydrocarbons. First, the green hydrogen feedstock will be produced by a water electrolysis system empowered by renewable energy resources. Next, a reverse water-gas shift process will utilize both CO2 and green hydrogen to produce syngas as an intermediate product. Finally, the syngas will be further processed to produce various hydrocarbons via a Fischer-Tropsch manufacturing system. This integrated industrial complex has been virtually demonstrated by rigorous modeling and simulations. Its economic performance has also been thoroughly investigated.