Electrochemical Anti-scale Effect of Special Brass Alloy Used for N80 Steel
摘 要
用高温熔炼方法制备含稀土铈的特殊黄铜合金,并将该合金和C7701合金分别浸泡于模拟油气田产出水中对产出水进行处理,之后采用EDTA络合滴定方法和失重法分别测定产出水中Ca2+的浓度;然后将N80钢片分别浸泡于经两种合金处理前后的模拟油气田产出水中,72h后计算N80钢片表面的结垢率,并分别观察和分析水垢的形貌和物相;结合金属阳离子及原电池作用对N80钢片表面水垢的影响,研究了特殊黄铜合金的防垢效果。结果表明:特殊黄铜合金在模拟油气田产生水中能够析出更多的Zn2+,阻碍CaCO3晶体形核;在经特殊黄铜合金处理过的模拟油气田产出水溶液中浸泡72h后,N80钢片表面的结垢率下降了20%;特殊黄铜合金能够将更多的方解石型CaCO3转变为文石型CaCO3,故其比C7701合金具有更好的防垢效果。
Abstract
A special brass alloy contained rare earth cerium was prepared by high temperature melting method, and the brass alloy and C7701 alloy were immersed in simulated oil gas field production water, and then Ca2+ concentration in the production water was measured by EDTA complex formation titration method and the weight loss method. N80 steel sheet was immersed into simulated oil gas field production water with the two alloys treatment for 72 h to calculate the scaling rate on the surface of N80 steel sheet. The microstructure of the scale was observed, and the phase of the scale was analyzed. Anti-scale effect of special brass alloy was studied by combining with the effect of metal cations and galvanic cell action on the scale. The results show that, in the simulated oil and gas field production water, a relatively large amount of Zn2+ was produced by the special brass alloy, which hindered the nucleation of CaCO3 crystals; after immersing in simulated oil gas field production water with special brass alloys for 72h, the scaling rate on N80 steel sheet surface decreased by 20%. More calcite calcium carbonate can transform into aragonite calcium carbonate with the special brass alloy's action, so the special brass alloy has a better anti-scale effect than C7701 alloy.
中图分类号 TB34 DOI 10.11973/jxgccl201704010
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51474181);西南石油大学研究生创新基金资助项目(CXJJ2015004)
收稿日期 2016/3/15
修改稿日期 2017/3/2
网络出版日期
作者单位点击查看
备注范舟(1971-),男,湖北荆门人,副教授,博士.
引用该论文: FAN Zhou,FU Jin-wen,LIU Jian-yi,HU Xiao-gang,LI Jia-lian. Electrochemical Anti-scale Effect of Special Brass Alloy Used for N80 Steel[J]. Materials for mechancial engineering, 2017, 41(4): 44~48
范舟,伏进文,刘建仪,胡晓刚,李佳莲. 特殊黄铜合金用于N80钢的电化学防垢效果[J]. 机械工程材料, 2017, 41(4): 44~48
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【4】李斌, 张耀亨, 胥聪敏. X80管线钢在延安地区水饱和土壤中的电化学腐蚀行为[J]. 机械工程材料, 2010,34(10):65-67.
【5】GHIZELLAOUI S, EUVRARD M, LEDION J,et al. Inhibition of scaling in the presence of copper and zinc by various chemical processes[J]. Desalination, 2007, 206(1): 185-197.
【6】汤庆国, 王丽娟, 梁金生, 等. 水垢晶体的形成及变化规律研究[J]. 人工晶体学报, 2009, 38(3): 602-607.
【7】何旭, 付传起, 杨萍, 等. 稀土铈对化学镀 Ni-P-PTFE 复合镀层防垢性能的影响[J]. 功能材料, 2013, 44(20): 2923-2926.
【8】GHIZELLAOUI S, EUVRARD M, LEDION J,et al. Inhibition of scaling in the presence of copper and zinc by various chemical processes[J]. Desalination, 2007, 206(1): 185-197.
【9】GABRIELLI C, MAURIN G, FRANCY-CHAUSSON H, et al. Electrochemical water softening: principle and application[J]. Desalination, 2006, 201(1): 150-163.
【10】MARUYAMA S, MATSUMOTO Y. Intrinsicnature of interfacial interactions between ionic liquids and rutile TiO2 single crystal surfaces studied by in situ contact angle measurement in a vacuum[J]. The Journal of Physical Chemistry C, 2015, 119(31): 17755-17761.
【11】DING Y, NIE L, LIANG J S, et al. Effects of copper-zinc alloy doped with rare earth elements on crystal of calcium carbonate[J]. Journal of Rare Earths, 2007, 25(1):448-451.
【12】CHOI D J, YOU S J, KIM J G. Development of an environmentally safe corrosion, scale, and microorganism inhibitor for open recirculating coolingsystems[J]. Materials Science and Engineering A, 2002, 335(1/2): 228-235.
【13】丁燕, 高明霞, 汤庆国, 等. 铜锌合金对碳酸钙水垢晶体结构的影响[J]. 河北工业大学学报, 2009, 38(4): 1-4.
【14】LIPUS L C, DOBERSEK D. Influence of magnetic field on the aragonite precipitation[J]. Chemical Engineering Science, 2007, 62(7): 2089-2095.
【15】KNEZ S,POHAR C. The magnetic field influence on the polymorph composition of CaCO3 precipitated from carbonized aqueous solutions[J]. Journal of Colloid and Interface Science, 2005, 281(2): 377-388.
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