海管管线封存期间缓蚀剂筛选

摘要

海管在停运期间,所采用的封存介质对海管会造成腐蚀,影响海管解封后的使用.通过模拟海管的工作环境,利用极化电阻法和失重法对封存期间选用的缓蚀剂进行筛选,确定最佳缓蚀剂及最佳加注浓度.结果表明,封存介质为淡水时,HYH-1312B缓蚀剂效果最好,从缓蚀性和经济性方面考虑,HYH-1312B的最佳加注浓度为40 mg·L-1.%The mothballing media used for sea-pipelines will result in sea-pipeline corrosion and influence the seapipeline work after demothballing.By stimulating the environment of sea-pipeline and using polarization resistance method and weight-loss method,the kind and dosage of inhibitors used for mothballing were studied.The results show that the effect of HYH-1312B is the best if used in freshwater as the medium for mothballing.Considering both inhibition and economical efficiency,the best added concentration of HYH-1312B is 40 mg · L-1.