As the conventional model of gasifier, the model based on the lumped slag layer method can only give the lumped parameters in gasifier. However, the distribution characteristics of the various parameters in gasifier is obvious. To remedy the defect in conventional model, this paper presents a compartment-slag layer model in the modeling of the shell gasifier, which takes the advantage of the lumped slag layer method and the compartment method used in the simulation of the CWS gasifier. The simulation results were validated by the experimental data. The dynamic results show that the new model can reflect the response of some key parameters. This could provide references for the future investigation of the dynamic characteristics of the IGCC system.

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