文章摘要
张宇,郭继香,杨矞琦,吴艳华,高秋英,赵清.耐高温抗H2S/CO2缓蚀剂的合成及评价[J].精细化工,2019,36(11):0
耐高温抗H2S/CO2缓蚀剂的合成及评价
Synthesis and evaluation of high temperature resistant H2S/CO2 corrosion inhibitor
投稿时间:2019-01-07  修订日期:2019-04-24
DOI:
中文关键词: 井筒腐蚀  缓蚀剂  硫化氢/二氧化碳腐蚀  壳寡糖
英文关键词: Wellbore corrosion  Corrosion inhibitor  H2S/CO2 corrosion  Chitooligosaccharide
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
张宇 中国石油大学(北京)非常规油气科学技术研究院 zhangyu_1020@outlook.com 
郭继香 中国石油大学(北京)非常规油气科学技术研究院 guojx002@163.com 
杨矞琦 中国石油大学(北京)非常规油气科学技术研究院  
吴艳华 中国石油大学(北京)非常规油气科学技术研究院  
高秋英 中国石油化工股份有限公司西北油田分公司 新疆 乌鲁木齐  
赵清 中国石油大学(北京)非常规油气科学技术研究院  
摘要点击次数: 95
全文下载次数: 0
中文摘要:
      采用天然大分子壳寡糖、缩水甘油三甲基氯化铵、苯甲醛为原料,合成了绿色壳寡糖衍生物缓蚀剂BHC。通过红外光谱、核磁共振波谱对缓蚀剂BHC结构进行了表征。采用失重法、电化学法、扫描电镜、原子力显微镜、接触角等对缓蚀剂BHC进行缓蚀性能评价和机理分析。结果表明,优化的缓蚀剂BHC的合成条件为m(HTCOS): m(苯甲醛)=1:2.4,反应温度80℃,反应时间24h。在总压为15MPa(H2S、CO2、N2分压分别为1MPa、5MPa和9MPa)条件下,缓蚀剂BHC质量浓度为100 mg/L时,P110钢片在140℃、含H2S/CO2腐蚀介质中的缓蚀率为85.62%,与市售缓蚀剂相比,BHC缓蚀效率提高16.90%,可有效减缓高温高含H2S/CO2腐蚀环境下钢材的腐蚀速率。缓蚀剂BHC是一种偏阴极保护的混合型缓蚀剂,在金属表面的吸附行为符合Langmuir吸附等温式,与钢表面形成稳定共价键,能很好保护钢管。
英文摘要:
      The chitosan oligosaccharide derivative BHC as a green corrosion inhibitor for corrosion inhibition was synthesized using natural macromolecular chitosan oligosaccharide, glycidyltrimethylammonium chloride and benzaldehyde as raw materials. The corrosion inhibitor BHC was characterized by FTIR and 1HNMR. The inhibition performance and mechanism of BHC were evaluated by weight loss method, electrochemical analysis, scanning electron microscope (SEM), atomic force microscopy (AFM) and contact angle measurement. The results showed that the optimized synthesis conditions of BHC were obtained as follows:m(HTCOS): m(benzaldehyde)=1:2.4,reaction temperature 80℃ and reaction time 24 h. When the total pressure was 15 MPa (the partial pressures of H2S, CO2 and N2 were 1 MPa, 5 MPa and 9 MPa, respectively), the corrosion inhibition rate of BHC (100 mg/L) on P110 steel corrosion at 140℃ in H2S/CO2 corrosive medium was 85.62%, 16.9% higher than that of commercial corrosion inhibitors corrosion inhibitors, which can effectively reduce the corrosion rate of P110 steel under high temperature and high H2S/CO2 corrosion environment. Corrosion inhibitor BHC was a mixed type corrosion inhibitor with predominant control of cathodic reaction. The adsorption of BHC on the P110 steel surface obeyed the Langmuir adsorption isotherm. And it formed a stable covalent bond with the steel surface, which can well protect the steel pipe.
  查看/发表评论  下载PDF阅读器
关闭