| 초록 |
The upgrading technology of heavy oils and residue can classified into three processes, which are hydroprocessing, carbon rejection process, and gasification. The extra-heavy oil fractions upgrading process, which consists of a rapid thermal pyroylzer (RTP) of extra-heavy oil and gasifier of RTP residue to produce syngas as well as supply heat to the pyrolyzer are developed in KIER. For the RTP residue gasifier design, parameters such as reactor temperature, ER(Equivalence Ratio), and steam/fuel ratio should be determined. In this study, the continuous fluidized bed reactor (0.05 m I.D. x 1.2 m high) was constructed for petroleum coke/sand gasification. The air and steam were used as gasifying agents. The gasification performances such as product gas composition, carbon conversion, heating value of product gas are determined. In air-blown gasification, the HHV of product gas ranges from 450 to 1200 kJ/m3 which is lower than that of typical gasification. On the other hand, steam gasification shows better performance without nitrogen dilution and enhanced steam-carbon gasification reaction. |
