典型牺牲阳极在脱硫催化液中的性能研究
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摘要
通过恒电流实验法测试了6种常用牺牲阳极材料在不同温度的硫回收催化剂溶液中的电化学性能。结果表明,高硅铸铁牺牲阳极开路电位、工作电位稳定,表面溶解均匀,在较高温度下电流效率最高,尤其是在60℃时达到89.7%,综合性能最好;溶解的产物Fe~(2+)不会对原有催化剂造成影响,是一种比较理想的硫磺回收装置保护用牺牲阳极材料。
By galvanostatic experiment, the electrochemical performances of six kinds of common sacrificial anodes in sulfur recovery catalyst solutions of different temperatures were tested. The results showed that the high-silicon cast iron sacrificial anode had the best overall performance. The open circuit potential and working potential of the high-silicon cast iron were stable, its surface dissolved evenly, and the current efficiency was the highest at relatively high temperature, with 89.7% at 60 ℃. What's more, the dissolved production Fe~(2+) had no negative effect on the performance of the catalyst. Therefore, the high-silicon cast iron is an ideal sacrificial protection anode material for sulfur recovery unit.
By galvanostatic experiment, the electrochemical performances of six kinds of common sacrificial anodes in sulfur recovery catalyst solutions of different temperatures were tested. The results showed that the high-silicon cast iron sacrificial anode had the best overall performance. The open circuit potential and working potential of the high-silicon cast iron were stable, its surface dissolved evenly, and the current efficiency was the highest at relatively high temperature, with 89.7% at 60 ℃. What's more, the dissolved production Fe~(2+) had no negative effect on the performance of the catalyst. Therefore, the high-silicon cast iron is an ideal sacrificial protection anode material for sulfur recovery unit.
引文
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[3] LI J D,MA G W,HAO H,et al.Optimal blast wall layout design to mitigate gas dispersion and explosion on a cylindrical FLNG platform [J].Journal of Loss Prevention in the Process Industries,2017,49:481—492
[4] 侯岱宗,谭博墉,杨昊鋆.某海上油气田腐蚀因素分析[J].全面腐蚀控制,2013,27(1):57—62.
[5] 张颖,阚振江,江浩,等.油气田开发中H2S成因及其生物治理方法初探[J].石油化工安全环保技术,2010,26(5):60—64.
[6] 常宏岗,熊钢.大型高含硫气田安全开采及硫磺回收技术[J].天然气工业,2012,32(12):85—91.
[7] 武明明.天然气净化厂硫磺回收单元运行风险评价技术研究[D].成都:西南石油大学,2016.
[8] 蒋大伟,朱波.硫磺回收装置腐蚀机理分析及防护措施[J].广东化工,2009,36(11):220—221.
[9] 杨朝晖,刘斌,李向阳,等.牺牲阳极在舰船阴极保护中的应用和进展[J].中国材料进展,2014,33(Z1):618—622.
[10] 张艳禹,李雨,倪慧.阴极保护原理及应用[J].全面腐蚀控制,2015,29(03):22—24.
[11] BAHADORI.1-Principle of electrochemical corrosion and cathodic protection[M].Boston:Gulf Professional Publishing,2014:1—34.
[12] SINGH R.Chapter seven-cathodic protection of offshore pipeline risers and associated equipment[M].Boston:Gulf Professional Publishing,2014:89—111.
[13] 闫广宏.天然气络合铁脱硫装置设计与应用[D].青岛:中国石油大学(华东),2015.
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