摘要
介绍了超临界水的物理化学性质,包括密度、离子积、介电常数、氢键和扩散系数等方面的特性.阐述了超临界火电机组的金属腐蚀特点和沉积规律,并通过实例加以说明.提出了抑制超临界机组金属腐蚀与沉积的措施,即机组投产前对高压给水系统进行充分、有效的化学清洗和机组投产后给水处理尽快转入加氧处理(OT)方式.
The physiochemical properties of supercritical water including density, ion product, dielectric constant, hydrogen-bonding as well as diffusion coefficient were introduced. The characteristics of metal corrosion and deposit law for supercritical units were elaborated and illustrated by actual examples. The measures were proposed for supercritical units to inhibit metal corrosion and deposit. Namely the feed water system of the unit should be chemically cleaned sufficiently and effectively before commissioning, and water treatment should shift to oxygenation treatment as soon as possible after commissioning.
出处
《动力工程》
CSCD
北大核心
2009年第3期210-217,共8页
Power Engineering
关键词
超临界机组
金属腐蚀
沉积
全挥发处理
加氧处理
supercritical unit
metal corrosion
deposit
all volatilized treatment
oxygenation treatment
