复合型P110钢盐酸缓蚀剂的性能测试与作用机理研究
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- 英文论文题名：Corrosion Inhibition Mechanism Investigation of Hydrochloric Acidulate Corrosion Inhibitor GW-120 for P110 Steel
- 论文作者：王红艳 ; 卢永斌 ; 尹成先 ; 白真权
- 英文论文作者：WANG Hong-yan ; LU Yong-bin ; YIN Chen-xian ; BAI Zhen-quan ; Tubular Goods Research Institute of CNPC ; Research Institute of Shaanxi Yanchang Petroleum Company Ltd.
- 年：2014
- 作者机构：中国石油集团石油管工程技术研究院;陕西延长石油(集团)有限责任公司研究院;
- 论文关键词：P110钢 ; 高温缓蚀剂 ; 电化学法 ; 扫描电镜 ; 机理分析
- 英文论文关键词：P110 steel ; high-temperature corrosion inhibitor ; electrochemical ; scanning electron microscopy ; mechanism analysis
- 会议召开时间：2014-07-28
- 会议录名称：第十八届全国缓蚀剂学术讨论会论文集
- 语种：中文
- 分类号：TE39;TG174.42
- 学会代码：ZGHA
- 会议名称：第十八届全国缓蚀剂学术讨论及应用技术经验交流会
- 会议地点：中国四川成都
- 主办单位：中国腐蚀与防护学会缓蚀剂专业委员会
- 学会名称：中国腐蚀与防护学会缓蚀剂专业委员会
- 页数：7
- 文件大小：6353k
- 原文格式：O
- 会议级别：全国
摘要
室内合成了两种酸化缓蚀剂主剂KL-1和MNX--1,通过复配优化研制出高温缓蚀剂GW--120。应用高温高压动态失重法对其性能进行了评价,并考察了缓蚀作用机理。结果表明,该缓蚀剂在不同盐酸浓度、不同缓蚀剂加量和不同温度下对P110钢试片均具有较好的缓蚀性能,可以满足石油行业标准SY/T5405—1996中120℃时一级酸化缓蚀剂产品的指标。电化学极化曲线显示主剂KL-1和碘化钾主要抑制腐蚀反应的阳极反应,作用机理属于"负催化效应"模型;主剂MNX-1主要抑制阴极反应,符合"负催化效应"作用机制;高温增效剂和复配后的缓蚀剂GW-120则对腐蚀阳极反应表现出明显的抑制,其机理属于"几何覆盖效应"模型。电化学阻抗研究、扫描电镜研究和缓蚀剂机理分析均表明该缓蚀剂在P110钢试片表面形成了多层、完整、致密的保护膜,有效地减缓了试片在酸液中的腐蚀。
Two corrosion pesticides KL-1 and MNX-1 were synthesized in the laboratory,followed by an optimal optimum allocation to combine into an high-temperature corrosion inhibitor GW-120.The effectiveness of the obtained corrosion inhibitor in the presence of acid was tested by high temperature and high pressure dynamic weight loss method,along with the investigation of corrosion inhibition mechanism.The observation indicates that the inhibitor plays an evident corrosion resistance for P110 steel specimens with different concentration of hydrochloric acid,inhibitor dosage as well as different temperatures,which allows it to meet the first-class demands for acidulate corrosion inhibitor in petroleum and natural gas industry standard SY/T 5405-1996.The electrochemical polarization curves exhibit that the pesticide KL-1 and KI inhibited the anodic corrosion reaction,ascribed to the "negative catalytic effect" mechanism.The pesticide MNX-1 inhibited the cathodic reaction,following "negative catalytic effect" mechanism.However,high-temperature additive and inhibitor GW-120 displayed the dramatic inhibitory action to the anodic reaction,in line with the "geometric coverage of the effects" mechanism.Moreover,a multilayers,complete,adhere and dense protective film formed on the P110 steel specimen surface was analyzed using electrochemical impedance spectroscopy,scanning electron microscopy,along with inhibitor mechanism,which congruously reveals the enhancement of corrosion inhibitor for the anti-corrosion properties of specimen in the acidic solution.
Two corrosion pesticides KL-1 and MNX-1 were synthesized in the laboratory,followed by an optimal optimum allocation to combine into an high-temperature corrosion inhibitor GW-120.The effectiveness of the obtained corrosion inhibitor in the presence of acid was tested by high temperature and high pressure dynamic weight loss method,along with the investigation of corrosion inhibition mechanism.The observation indicates that the inhibitor plays an evident corrosion resistance for P110 steel specimens with different concentration of hydrochloric acid,inhibitor dosage as well as different temperatures,which allows it to meet the first-class demands for acidulate corrosion inhibitor in petroleum and natural gas industry standard SY/T 5405-1996.The electrochemical polarization curves exhibit that the pesticide KL-1 and KI inhibited the anodic corrosion reaction,ascribed to the "negative catalytic effect" mechanism.The pesticide MNX-1 inhibited the cathodic reaction,following "negative catalytic effect" mechanism.However,high-temperature additive and inhibitor GW-120 displayed the dramatic inhibitory action to the anodic reaction,in line with the "geometric coverage of the effects" mechanism.Moreover,a multilayers,complete,adhere and dense protective film formed on the P110 steel specimen surface was analyzed using electrochemical impedance spectroscopy,scanning electron microscopy,along with inhibitor mechanism,which congruously reveals the enhancement of corrosion inhibitor for the anti-corrosion properties of specimen in the acidic solution.
引文
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[2]吴奇,邹洪岚,张汝生,等译.酸化增产技术[M].北京:石油工业出版社,2004:10-13
[3]邱海燕,李建波.酸化缓蚀刑的发展现状及展望[J].腐蚀科学与防护技术,2005,17(4):255-258
[4]李谦定,李恒娟,卢永斌.一种盐酸酸化缓蚀剂的合成及性能评价[J].油田化学,2011,28(2):206-209.
[5]四川石油管理局.油气井酸化读本[Z].成都:西南石油学院,1978:38.
[6]邱海燕.酸化缓蚀剂的合成及机理研究[DI.成都:西南石油学院硕士论文,2004.1-2.
[7]曹楚南.腐蚀电化学原理[M1.北京:化学工业出版社,2004,361-364.
[8]曹楚南.腐蚀电化学[M1.北京:化学工业出版社,1994:127-149
[9]张鉴清,曹楚南.交流阻抗数据分析系统[J].腐蚀科学与防护技术,1990,2(3):9-15.
[10]FEITLER H.Materials performance[J].Corrosion,1972(11):29-33.
[11]颜红侠,张秋禹,张军平,等.咪唑啉型缓蚀剂的合成及其抑制CO_2腐蚀性能的研究[J].石油与天然气化工,2002,31(6):319-320.
[12]汪的华,甘复兴,姚禄安,等.缓蚀剂吸附行为研究进展与展望[J].材料保护,2000;33(1):29-33
[13]王静,汤兵,陈欣义.酸洗缓蚀协同机理研究与进展[J].腐蚀与防护,2007,28(5):217-219.