With the help of Aspen Plus, a two-dimensional unsteady CFD model is developed to simulate the coal gasification process in a fixed bed gasifier. A developed and validated two dimensional CFD model for coal gasification has been used to predict and assess the viability of the syngas generation from coal gasification employing the updraft fixed bed gasifier. The process rate model and the sub-model of gas generation are determined. The particle size variation and char burning during gasification are also taken into account. In order to verify the model and increase the understanding of gasification characteristics, a set of experiments and numerical comparisons have been carried out. The simulated results in the bed are used to predict the composition of syngas and the conversion of carbon. The model proposed in this paper is a promising tool for simulating the coal gasification process in a fixed bed gasifier.

借助Aspen Plus，开发了二维非稳态CFD模型，以模拟固定床气化炉中的煤气化过程。已开发和验证的二维CFD煤气化CFD模型已用于预测和评估使用上升气流固定床气化炉从煤气化产生的合成气的可行性。确定过程速率模型和气体生成的子模型。还考虑了粒径变化和气化过程中的焦炭燃烧。为了验证该模型并增加对气化特性的了解，已进行了一组实验和数值比较。床中的模拟结果用于预测合成气的组成和碳的转化。