4给水的氧化处理(OT).ppt

North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * North China Electric Power University * 讨论题 AVT与OT有何不同？ NCEPU * NCEPU * 加氧位置 在氧化性水化学运行方式中，加氧位置时必须认真选择的，为的是保持所要求的氧浓度。 对于无铜系统机组(凝汽器管除外)，加入点最好是在凝结水处理装置和除氧器两者的下游；有的电厂是安排在紧靠除氧器排汽处以防氧从该点逸出。这种往系统中加氧的方式，必须有排气条件，以便排出由补给水中除掉的有机物而生成的二氧化碳。对加热器和除氧器都要作此考虑。 对于有铜系统机组(即低压加热器为铜合金管)，应在给水泵的吸入侧的加氧点进行加氧。 NCEPU * 日本采用CWT 法时,氧气从凝汽器除盐装置出口(或低压加热器入口)和除氧器出口同时注入;氨水从凝汽器除盐装置出口( 或低压加热器入口) 注入。 采样监测点有: 除氧器出入口, 省煤器入口, 过热器出口, 凝结水泵出口, 低压加热器入口和疏水出口等。下图为加氧系统示意图。 氧气的储存设备，一般选用承压15MPa、容积40L的钢瓶。 日本的加氧系统 定州电厂加氧间 NCEPU * NCEPU * 加氧系统示意图(S: 采样点) NCEPU * CWT and AVT of Ratchaburi Power Pla