DLN1.0+与LEC-NextGen燃烧系统对比

Comparison of DLN1. 0 + and LEC-NextGen combustion system

对比了GE公司与PSM公司最新开发的应用于燃气轮机的DLN1.0+与LEC-NextGen燃烧系统的设计特点,分析了2种燃烧系统在提高燃料预混均匀度、降低火焰温度、提高冷却效率、降低流动损失、减小接触面磨损等方面采取的设计方法。2种燃烧系统NOx排放质量浓度均不到DLN1.0燃烧系统的一半,检修间隔延长了1~2倍,LEC-NextGen燃烧系统CO排放质量浓度可低于1.25 mg/m^3。

The design features of DLN1.0+and LEC-NextGen combustion systems for gas turbines newly developed by GE and PSM are compared.The design methods of the two combustion systems in improving fuel premixing uniformity,reducing flame temperature,improving cooling efficiency,reducing flow loss and reducing contact surface wear were analyzed.NOx mass concentration discharged by either combustor above is less than half of that discharged by DLN1.0 combustor,and the maintenance interval is doubled or tripled.The CO mass concentration discharged by LEC-NextGen combustor is lower than 1.25 mg/m^3.