超临界机组汽水系统腐蚀产物迁徙过程研究
发布时间：2019-06-21 16:05
【摘要】：从汽水系统腐蚀产物迁徙过程入手,探讨了超临界机组汽水系统腐蚀产物的来源,即低压加热器和高压加热器等部件发生流动加速腐蚀产生大量腐蚀产物,进入工质随工质进行迁徙。由于工质物性参数的变化,腐蚀产物溶解度降低,大量腐蚀产物沉积在高温管道。研究发现,炉管氧化皮的生成一方面来源于自身高温氧化,另一方面来自腐蚀产物沉积。结果表明,汽水系统不同部件内腐蚀形式不同,可以通过提高给水品质来抑制腐蚀产物迁徙对机组的影响,保证机组安全稳定运行。
[Abstract]:Starting from the migration process of corrosion products in steam and water system, the source of corrosion products in steam and water system of Supercritical Unit is discussed, that is, the flow accelerated corrosion of low pressure heaters and high pressure heaters produces a large number of corrosion products, and the working fluid moves with the working fluid. Due to the change of physical parameters of working fluid, the solubility of corrosion products decreases, and a large number of corrosion products are deposited in high temperature pipes. It is found that the formation of furnace tube oxide scale comes from its own high temperature oxidation on the one hand and corrosion product deposition on the other. The results show that the corrosion forms in different components of the steam-water system are different, and the influence of corrosion product migration on the unit can be suppressed by improving the quality of feed water, so as to ensure the safe and stable operation of the unit.
【作者单位】： 华北电力大学电站设备状态监测与控制教育部重点实验室;宁夏电力公司电力科学研究院;
【基金】：国家自然科学基金项目(51471069) 北京市自然科学基金项目(2152029) 中央高校基本科研业务费专项资金项目(2015ZD005)资助
【分类号】：TG172
，
本文编号：2504198
[Abstract]:Starting from the migration process of corrosion products in steam and water system, the source of corrosion products in steam and water system of Supercritical Unit is discussed, that is, the flow accelerated corrosion of low pressure heaters and high pressure heaters produces a large number of corrosion products, and the working fluid moves with the working fluid. Due to the change of physical parameters of working fluid, the solubility of corrosion products decreases, and a large number of corrosion products are deposited in high temperature pipes. It is found that the formation of furnace tube oxide scale comes from its own high temperature oxidation on the one hand and corrosion product deposition on the other. The results show that the corrosion forms in different components of the steam-water system are different, and the influence of corrosion product migration on the unit can be suppressed by improving the quality of feed water, so as to ensure the safe and stable operation of the unit.
【作者单位】： 华北电力大学电站设备状态监测与控制教育部重点实验室;宁夏电力公司电力科学研究院;
【基金】：国家自然科学基金项目(51471069) 北京市自然科学基金项目(2152029) 中央高校基本科研业务费专项资金项目(2015ZD005)资助
【分类号】：TG172
，
本文编号：2504198
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