油田排海污水中H_2S的分布及其对平台钢结构设施腐蚀行为的影响

THE CONCENTRATION DISTRIBUTION OF H_2S IN THE WASTE WATER FROM OIL PLATFORM AND ITS INFLUENCES ON THE CORROSION BEHAVIOR OF THE STEEL STRUCTURE OF PLATFORM

研究了W 11- 4油田A平台排海污水中H2 S、钢桩上附着生物状态以及白色沉积物对平台海域钢结构设施腐蚀与防护的影响 ,测定了H2 S的浓度、分布以及含H2 S海水的腐蚀特征 ,研究了各种附着生物和白色沉积物的状态及组成 .结果表明 ,H2 S主要集中在海面海流下方区域 ,并与海水流速密切相关 ,最大可能H2 S浓度低于 19mg/L ;白色沉积物为附着生物受硫化氢影响的生理分泌物 ,海水中的H2

In order to understand the effects of hydrogen sulfide and white deposit in discharged waste water from oil platform on the corrosion and protection of the steel structure of W11-4 oil platform,a study was made by collecting the water samples,analyzing the concentration and distribution of hydrogen sulfide in the samples and the composition of the white deposit in the sea around the platform,and investigating its impact on the corrosion behavior of carbon steel.The results indicate that hydrogen sulfide mainly concentrates in the region of the sea near the surface,with a maximum of 19 mg/L,and its concentration greatly depends on the sea flow.The white deposit is the secretion from the attached marine organisms on the platform structure.It is also clarified that hydrogen sulfide and white deposit have no impact on the corrosion and protection of the steel structure of the oil platform.