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为了解气化炉变工况运行的动态特性,基于气化炉气化过程的简化和假设,考虑了附在水冷壁面上固态渣层及熔融态渣层的影响,在Matlab/Simulink仿真平台上建立了气化炉的一维动态仿真模型,对3种煤进行了动态仿真研究,得到了动态过程气化炉中气化温度、底部出口渣质量流量、熔融/固态渣层厚度及煤气组分等气化参数的变化规律.结果表明:氧量对气化参数的影响远大于水蒸气的影响;当气化参数相同时,3种煤呈现相似的变化规律;渣层对气化炉的动态过程具有较长时间的惯性影响.
In order to understand the dynamic characteristics of gasifier operating in variable working conditions, the influence of solid slag layer and molten slag layer attached to water-cooled wall was considered, based on the simplification and assumption of gasifier gasification process, which was established on Matlab / Simulink simulation platform The one-dimensional dynamic simulation model of gasifier was used to study the dynamic simulation of the three kinds of coal. The gasification temperature in the process gasifier, the mass flow rate of the bottom outlet slag, the thickness of the molten / solid slag layer and the gas composition were obtained. The results show that the effect of oxygen content on gasification parameters is much larger than that of water vapor. When the gasification parameters are the same, the three kinds of coal show similar variation rules. The influence of slag layer on gasifier dynamic process Has a longer time inertia effect.