1036MW超超临界燃煤机组锅炉等离子点火系统的设计及应用  

Design and Applications of a Plasma Ignition System for a 1 036 MW Ultra-supercritical Coal-fired Boiler Unit

作　　者：钟斌 李庚 钱锋 刘彦涛 

机构地区：[1]深圳东方锅炉控制有限公司,广东深圳518057

出　　处：《热能动力工程》2015年第3期479-482,502,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：针对国内某电厂1 036 MW超超临界燃煤机组4号锅炉,设计了含低NOx等离子煤粉燃烧器的等离子点火系统,实现了等离子煤粉燃烧器的流场和煤粉浓度分布可调。Fluent模拟计算及实际应用效果表明:当等离子煤粉燃烧器为点火燃烧器时,等离子点火系统运行稳定,煤粉燃尽率高,锅炉升温、升压速率满足运行规程要求;当等离子煤粉燃烧器为主燃烧器时,很好地还原了锅炉原设计煤粉燃烧器的流场和煤粉浓度分布,保证了锅炉的性能达到设计要求。Described were the principles for the plasma ignition technology. For the Boiler No. 4 of a 1036 MW ultra-supercritical coal-fired unit in a domestic power plant,a plasma ignition system equipped with low NOxplasma pulverized coal burners was designed. On this basis,the authors made it realized that the flow field formed by using plasma pulverized coal burners and the pulverized coal concentration distribution is controllable. The simulation calculation results by using the software Fluent and the practical operation effectiveness show that when the plasma pulverized coal burners serve as the ignition ones,the plasma ignition system can maintain a stable operation and has a high burn-out rate of the pulverized coal,the temperature and pressure rise speed of the boiler meeting the requirements stipulated in the operation specifications. When the plasma pulverized coal burners serve as the primary ones,the flow field and the pulverized coal concentration distribution originally designed for the boiler can be restored very well,thus guaranteeing that the performance of the boiler can meet the design requirement.

关 键 词：等离子点火 煤粉燃烧器 等离子发生器 无油启动 

分 类 号：TK232.2[动力工程及工程热物理—动力机械及工程]