【摘要】 对胜利油田湿蒸汽发生器爆管原因的分析得知 ,爆管为氢腐蚀所致 ;腐蚀坑的形成是引起氢腐蚀的先决条件 ,而氧腐蚀是最终氢蚀的先决条件 ;炉管腐蚀因素有氧化腐蚀和电化学腐蚀 ,两者是互相伴随进行的。为此 ,提出 5种综合防止炉管腐蚀的方法 :脱氧防腐法、牺牲阳极保护法、调节介质的酸碱度保护法、控制运行参数防腐法和停炉保护法。从湿蒸汽发生器的使用和管理上提出 4项建议 :(1)严把水的处理质量关 ;(2 )防止发生器腐蚀不能单纯依赖除氧 ,还必须严格控制 pH值、碱度和含盐量等给水指标 ,将炉水碱度控制在 9～ 12mg L ,pH值在 8 5～9 5能有效防腐 ;(3)严格水管理制度 ;(4)选用先进的含氧分析设备和控制检测仪器 ,保证湿蒸汽发生器用水含氧量达到使用标准更多还原

【Abstract】 The reasons of the crack of tubes on the wet steam generator used in Shengli Oilfield are analyzed. The tube crack is caused by hydrogen corrosion; the forming of corrosion pits is the precondition of hydrogen corrosion, while oxygen corrosion finally leads to the forming of hydrogen corrosion; and the factors of tube corrosion include oxygen corrosion and electrochemical corrosion. Methods for preventing the corrosion of the tubes are thereby put forward, including deoxygenating anticorrosion method, sacrificial anode protection method, medium pH value regulating protection method, operating parameter controlling protection method and boiler shutdown protection method. And suggestions for use and management of the wet steam generator are proposed.更多还原