| 초록 |
Two process models for modular GTL process, mainly producing Fischer-Tropsch (F‒T) synthetic oils were developed by Aspen Plus. Both models mainly comprised a reforming unit, an F‒T synthesis unit, and a recycle unit, with the syngas generation and syngas ratio conditioning methods as the main difference. In the reforming unit, steam reforming or CO2/Steam-mixed reforming was selected to generate the desired syngas. Then, the Co-based microchannel F‒T synthesis was applied to convert the obtained syngas to synthetic oils. After F‒T synthesis, a portion of the unreacted syngas was recycled to improve energy efficiency, and reduce CO2 emissions. Both technical and economic analysis were implemented to investigate the two modular GTL options. It was shown that the increased energy efficiency and reduced CO2 emissions were achieved by recycling. Meanwhile, both options were economically viable at 2,500 BPD, and were more competitive in case of high carbon tax. |
