热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
12期
118-122
,共5页
孟龙%杨静%孙本达%张祥金%祁东东%倪瑞涛
孟龍%楊靜%孫本達%張祥金%祁東東%倪瑞濤
맹룡%양정%손본체%장상금%기동동%예서도
直接空冷%凝汽器%流动加速腐蚀%溶解氧%PH 值%流速%温度
直接空冷%凝汽器%流動加速腐蝕%溶解氧%PH 值%流速%溫度
직접공랭%응기기%류동가속부식%용해양%PH 치%류속%온도
direct air cooling%condenser%flow accelerated corrosion%dissolved oxygen%pH value%flow rate%temperautre
采用正交试验方法研究了空冷岛运行状态下温度、溶解氧含量、pH 值、碱化剂种类和流速对碳钢部件流动加速腐蚀(FAC)的影响.结果表明：温度对空冷岛FAC的影响最大,溶解氧量次之,流速影响较小；碱化剂的使用与 pH 值相关,其联合作用不可忽视；水中溶解氧含量较低时,由于会影响金属表面Fe2 O3保护膜的形成,使得金属易产生 FAC,此时,提高水中溶解氧量可有效抑制FAC.
採用正交試驗方法研究瞭空冷島運行狀態下溫度、溶解氧含量、pH 值、堿化劑種類和流速對碳鋼部件流動加速腐蝕(FAC)的影響.結果錶明：溫度對空冷島FAC的影響最大,溶解氧量次之,流速影響較小；堿化劑的使用與 pH 值相關,其聯閤作用不可忽視；水中溶解氧含量較低時,由于會影響金屬錶麵Fe2 O3保護膜的形成,使得金屬易產生 FAC,此時,提高水中溶解氧量可有效抑製FAC.
채용정교시험방법연구료공랭도운행상태하온도、용해양함량、pH 치、감화제충류화류속대탄강부건류동가속부식(FAC)적영향.결과표명：온도대공랭도FAC적영향최대,용해양량차지,류속영향교소；감화제적사용여 pH 치상관,기연합작용불가홀시；수중용해양함량교저시,유우회영향금속표면Fe2 O3보호막적형성,사득금속역산생 FAC,차시,제고수중용해양량가유효억제FAC.
By using the orthogonal test method,effects of dissolved oxygen content,pH value,different types of alkaline agent,and flow velocity on carbon steel flow accelerated corrosion (FAC)were discussed, under air cooling island working condition.Studies show that temperature has the largest influence on air cooling island FAC,dissolved oxygen takes the second place,and then is the velocity.The utilization of al-kaline agent is associated with the solution's pH value,the interaction between the two can not be neglec-ted.When the dissolved oxygen in water is low,the formation of Fe2 O3 protective film is affected,metals are prone to FAC.By this time,improving dissolved oxygen in water is the effective way to control FAC.
