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天然气集输管道高效泡排缓释剂的研究 被引量:3

Study on the foam releasion corrosion inhibitor for natural gas gathering and transferring metal pipe
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摘要 通过对松原油田高CO2含量天然气对集输管道材料X60钢腐蚀规律分析,研制出一种有机醇胺体系的高效泡排缓蚀剂。利用有机醇胺分子兼有亲水性和疏水性的双亲性特性,通过表面活性剂和扩散剂(泡排剂)协调缓释剂分子与天然气成分子之间的各种相互作用力,实现醇胺分子自发地穿梭通过传输介质天然气扩散到金属表面形成保护膜,阻止了金属与介质中CO2的接触,减少了金属与CO2腐蚀反应有关的电荷转移或物质转移。采用电化学阻抗、静态室温常压失重法和静态高压失重法评价了缓蚀剂的缓释效果。结果表明,室内实验液相缓蚀速率大于85%,气相缓蚀速率大于96%,X60钢试片的腐蚀速率从缓释前的0.732mm/a降低到0.076mm/a,提高了天然气集输管道的使用寿命和系统运行的安全性。 通过对松原油田高CO2含量天然气对集输管道材料X60钢腐蚀规律分析,研制出一种有机醇胺体系的高效泡排缓蚀剂。利用有机醇胺分子兼有亲水性和疏水性的双亲性特性,通过表面活性剂和扩散剂(泡排剂)协调缓释剂分子与天然气成分子之间的各种相互作用力,实现醇胺分子自发地穿梭通过传输介质天然气扩散到金属表面形成保护膜,阻止了金属与介质中CO2的接触,减少了金属与CO2腐蚀反应有关的电荷转移或物质转移。采用电化学阻抗、静态室温常压失重法和静态高压失重法评价了缓蚀剂的缓释效果。结果表明,室内实验液相缓蚀速率大于85%,气相缓蚀速率大于96%,X60钢试片的腐蚀速率从缓释前的0.732mm/a降低到0.076mm/a,提高了天然气集输管道的使用寿命和系统运行的安全性。
出处 《化工进展》 EI CAS CSCD 北大核心 2012年第S2期211-215,共5页 Chemical Industry and Engineering Progress
基金 国家863计划(2009AA050903)
关键词 天然气 集输金属管道 CO2腐蚀 缓蚀剂 缓释机理 natural gas gathering and transferring metal pipe carbon dioxide corrosion corrosion inhibitors inhibiting mechanics
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