Dynamic modeling and simulation of shell gasifier in IGCC |
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| Authors: | Bo Sun Yongwen LiuXi Chen Qulan Zhou Ming Su |
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| Affiliation: | a Department of Power Machinery and Engineering, Shanghai Jiaotong University, Shanghai 200240, Chinab Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, USAc School of Aerospace, Xi''an Jiaotong University, Xi''an 710049, Chinad Department of Civil & Environmental Engineering, Hanyang University, Seoul, 133-791, Koreae State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China |
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| Abstract: | A dynamic model of the Shell gasifier in an integrated coal gasification combined cycle (IGCC) is established based on physical principles, focusing on the time-dependent accumulation and flow on the walls. Numerical simulations are carried out to explore the system dynamic performance with respect to step changes in the inlet oxygen-to-coal ratio and steam-to-coal. The dynamic responses of key outlet variables, including the gas temperature, exiting slag mass flow rate, thicknesses of the solid and fluid slag layer, volume percentages of H2, CO2 and CO in syngas etc., are obtained. Three different coals are analyzed in this paper, and similar trends in their dynamic behaviors are found by using the gasifier model. The model and simulation method may be useful for providing insights to the operation and control of the IGCC process with respect to complex varying working conditions. |
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| Keywords: | Dynamic simulation Shell Gasification |
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