CAJ | 학술논문

针对某气田集输管道腐蚀极为严重这一状况,研究了适合该气田生产条件的缓蚀剂.首先,采用失重法对9种商品缓蚀剂进行了初步筛选,然后在模拟实际工况条件下对筛选出的缓蚀剂进行了复配研究,最后采用动电位极化曲线对具有较好缓蚀率的复配缓蚀剂进行了最佳添加量测试.实验结果显示:在9种不同类型的缓蚀剂中,以咪唑啉类缓蚀剂和季铵盐类缓蚀剂的缓蚀效果最好;咪唑啉类缓蚀剂和季铵盐类缓蚀剂在本实验条件下具有很好的协同效应,且复配比为60:40时的缓蚀效果最好可达97%;复配缓蚀剂属于阴极抑制型缓蚀剂,其添加量为200mg/L时,缓蚀率可达99%以上.
침대모기전집수관도부식겁위엄중저일상황,연구료괄합해기전생산조건적완식제.수선,채용실중법대9충상품완식제진행료초보사선,연후재모의실제공황조건하대사선출적완식제진행료복배연구,최후채용동전위겁화곡선대구유교호완식솔적복배완식제진행료최가첨가량측시.실험결과현시:재9충불동류형적완식제중,이미서람류완식제화계안염류완식제적완식효과최호;미서람류완식제화계안염류완식제재본실험조건하구유흔호적협동효응,차복배비위60:40시적완식효과최호가체97%;복배완식제속우음겁억제형완식제,기첨가량위200mg/L시,완식솔가체99%이상.
The corrosion of the gathering pipeline in a gas field was extremely serious and the corrosion inhibitor for this gas field was studied. Firstly,weight loss method is performed in this study for preliminary selection among 9 corrosion inhibitors. Then,corrosion inhibitors which are selected are remixed under the imitation operating mode condition. Finally,by measurements of potentiodynamic polarization curve some compounding inhibitors that inhibit the corrosion rate well are investigated for reaching optimum addition quantity. The result shows imidazoline corrosion inhibitor and quaternary-ammonium-salt corrosion inhibitor have better inhibition effect. In this experimental system, these two kinds of inhibitor have good synergistic effect and when compound ratio is 60:40, the best inhibition effect is shown that the inhibition rate is 97%. Compounded inhibitor is cathodic type inhibitor while the inhibition rate is above 99%when add up to 200mg/L.