PFBC/CC燃机叶片的腐蚀/冲蚀机理研究

MECHANISM STUDY ON CORROSION/EROSION OF BLADES IN PFBC/CC GAS TURBINES

一、引言 增压流化床燃烧燃气/蒸汽联合循环(PFBC/CC)发电技术中关键问题之一,是燃机叶片的腐蚀和冲蚀。PFBC出口烟气是腐蚀性的含尘气流,叶片受到腐蚀/冲蚀的复合作用,不仅会使叶型变化,叶栅压损增加,降低燃机效率,而且会使动叶强度降低,寿命缩短,威胁机组安全。本文综合了前人的研究成果,就腐蚀机理作了探讨,并着重就冲蚀现象进行了冷态试验研究,得到了一些有用的结论。

The blade corrosion/erosion in gas turbine is a crucial problem in the pressurized fluidized bed combined steam-gas cycle generation technology. A series of experiments were conducted under room temperatures in a special test rig. The mechanism of blade corrosion/erosion were discussed.