基于Aspen Plus的气流床煤气化炉建模及其变工况特性研究
摘要：目的 研究整体煤气化联合循环(integrated gasification combined cycle，IGCC)电站中煤气化炉的运行机理，分析和优化煤气化炉的关键运行参数。 方法 基于Aspen Plus建立了气流床煤气化炉的稳态热力学模型，并与文献中数据进行比对，验证了模型准确性，在此基础上，开展了对煤气化炉关键参数敏感性的研究。 结果 热力学模型适合对稳态的煤气化过程进行模拟，具有模拟结果准确、建模简单和计算量不大的优点。 结论 敏感性分析的结果表明：氧煤比是影响煤气化过程的最主要的运行参数，氧气不足和氧气过多都会造成合成气有效成分的产量减少，建立的Shell气化炉模型的最佳氧煤比在0.85左右；水煤比也是影响煤气化过程的关键参数，气化炉内能量充足时，增加输入水的量可使合成气中含有更多的氢气，而能量不足时过多的水也会导致合成气有效成分的减少。
Abstract:Objectives This research aims to investigate the operational mechanism of a coal gasifier within an integrated gasification combined cycle (IGCC) power plant, with a focus on analyzing and optimizing key operational parameters. Methods A steady-state thermodynamic model of the gasifier was developed using Aspen Plus. The model’s accuracy was validated by comparing its simulation results with published data. A sensitivity analysis was then conducted to assess the impact of key gasifier parameters. Results The thermodynamic model demonstrates the suitability for simulating steady-state coal gasification processes. The model exhibits high accuracy, simplified structure, and efficient computational performance. Conclusions The sensitivity analysis reveals that the oxygen-to-coal ratio holds the most significant influence on the coal gasification process. Both insufficient and excessive oxygen levels result in a reduction of syngas active ingredient production. The optimal oxygen-to-coal ratio for the Shell gasifier model is determined to be approximately 0.85. Water-to-coal ratio also plays a critical role in the gasification process. When sufficient energy is present within the gasifier, increasing the water input leads to higher water content in the syngas, potentially increasing hydrogen concentration. However, excessive water input under energy-constrained conditions can decrease the effective composition of the syngas.
标题：基于Aspen Plus的气流床煤气化炉建模及其变工况特性研究
title:Research on Modeling and Variable Operating Condition Characteristics of Entrained Flow Coal Gasifier Based on Aspen Plus
作者：王轶男, 吕佳阳, 陈衡, 张国强, 徐钢, 翟融融
authors:Yinan WANG, Jiayang LÜ, Heng CHEN, Guoqiang ZHANG, Gang XU, Rongrong ZHAI
关键词：燃煤发电,整体煤气化联合循环(IGCC),煤气化,Aspen Plus,热力学模型,气流床煤气化炉,
keywords:coal-fired power generation,integrated gasification combined cycle (IGCC),coal gasification,Aspen Plus,thermodynamic model,entrained flow coal gasifier,
发表日期：2024-10-31
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