CO2 reduction potential of coal-to-liquids (CTL) process: Effect of gasification technology

摘要: Abstract Coal-to-liquids (CTL) is a process of producing synthetic transportation fuels from coal. The involves gasification coal to produce synthesis gas which then catalytically converted liquid in Fischer-Tropsch (FT) reactor. A major concern CTL plants their emissions carbon dioxide (CO2) produced as part the process. significant fraction plant-level CO2 process, needs be separated before syngas fed into FT In this paper, processes using two different coal-feeding methods–slurry and dry–are studied for effect on performance, cost plant. slurry-fed dry-fed systems are modeled based commercially available GE Shell gasifier designs, respectively. Effect implementing CCS or constraints that impose price also studied. potential co-production configuration reduce overall by displacing conventional pulverized power investigated. It was found dry-feed more efficient, emits less has lower capital product costs compared plant slurry-feed gasifier. For both cases, liquids-only comparable crude oil prices seen past 2–3 years. Though much costlier than configurations terms cost, because high electricity revenues, case, at market electricity. Co-production efficient separate production liquids and, difference efficiency increases with addition CCS.