摘要
整体煤气化燃料电池(IGFC)发电是一项煤基低碳高效发电革命性前沿技术,在高效发电的同时可以实现CO_(2)富集。探讨了IGFC系统控制策略,提出了IGFC系统关键单元燃料电池发电和尾气纯氧燃烧主要控制参数及控制方法,建立了高温燃料电池发电单元热平衡模型和纯氧燃烧尾气CO_(2)体积分数预测模型,通过实验获得了模型的相关参数。利用高温燃料电池发电单元热平衡模型,电堆电压和发电功率预测相对误差小于5%,获得了20 kW级高温燃料电池发电单元不同发电功率下的主要参数控制值;进行了20 kW级IGFC发电尾气燃烧实验验证,在较低的过氧系数(1.05)条件下,尾气纯氧燃烧后CO_(2)干基体积分数达到93%以上,与尾气CO_(2)体积分数模型预测误差小于1%。通过建立的模型预测,结合常规PID控制,可以实现IGFC系统关键参数有效控制。
Integrated coal gasification fuel cell(IGFC)power generation is a revolutionary and frontier technology of coal based low carbon and efficient power generation,which can realize CO_(2)enrichment while efficient power generation.The control policy of IGFC system is discussed,and the main control parameters and control methods of fuel cell power generation and exhaust pure oxygen combustion are proposed.The heat balance model of high temperature fuel cell power generation unit and the CO_(2)concentration prediction model of pure oxygen combustion exhaust gas were established,and the relevant parameters of the model were obtained through experiments.Using the heat balance model of high-temperature fuel cell power generation unit,the relative error of stack voltage and power generation prediction is less than 5%,and the control values of main parameters of 20 kW high-temperature fuel cell power generation unit under different power generation are obtained.The combustion experimental verification of 20 kW IGFC power generation tail gas was carried out.Under the condition of low oxygen excess coefficient(1.05),the CO_(2)dry basis concentration after pure oxygen combustion of the tail gas reaches more than 93%,and the prediction error with the tail gas CO_(2)concentration model was less than 1%.Through the model prediction established,combined with conventional PID control,the key parameters of IGFC system can be effectively controlled.
作者
刘长磊
李初福
董斌琦
许明
LIU Changlei;LI Chufu;DONG Binqi;XU Ming(Guohua Energy Investment Co.,Ltd,Beijing 100007,China;National Institute of Clean and-low-carbon Energy,Beijing 102211,China)
出处
《洁净煤技术》
CAS
CSCD
北大核心
2024年第S02期289-293,共5页
Clean Coal Technology
基金
国家重点研发计划资助项目(2017YFB0601900)
关键词
IGFC
纯氧燃烧
控制策略
模型预测
IGFC
pure oxygen combustion
control policy
model prediction
