DLN燃烧系统运行维护特点

摘要

With the DLN combustion system is generally applied to the gas turbine to reduce NOx emission, and in order to improve the operation reliability and availability of DLN combustion system, it is necessary to understand and grasp the characteristics of the opera-tion and maintenance.According to the mechanism of DLN combustion technology to reduce NOx emission, the reason of narrow win-dow and common operation problems of DLN combustion system were analyzed, and it was discussed to avoid these common operation problems by DLN tuning in this paper.In addition the influence of some key transmitters on DLN combustion system temperature con-trol line and fuel split were analyzed also.It was pointed out that the characteristics of DLN combustion system of multiple nozzles burn-er discharge orifices being susceptible to plugging or fouling.Understand and master these features help to guide the DLN combustion system operation and maintenance.%随着DLN燃烧系统普遍应用于燃气轮机来降低NOx 的排放，有必要了解和掌握其运行维护的特点，以提高其运行可靠性和可用率。本文根据DLN燃烧技术降低NOx排放的机理，分析了DLN燃烧系统运行窗口狭窄的原因，以及常见的运行问题，探讨通过DLN调整来避免这些问题的产生；另外还分析了几个关键变送器对DLN燃烧系统运行温控线及燃料分配比例的影响；指出了DLN燃烧系统多喷嘴燃烧器排气孔易被堵塞和沾污的特点，了解和掌握这些特点有助于指导DLN燃烧系统的运行维护。