加酸与阻垢剂联合处理控制电厂循环冷却水系统的结垢与腐蚀
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摘要
通过静态试验和动态模拟试验研究了某电厂循环冷却水系统的加酸与阻垢剂联合处理方案。静态试验结果显示,该电厂原水加酸中和2.0 mmol·L~(-1)碱度后,浓缩倍率≤6的情况下,水样不存在结垢趋势,电化学测试表明该条件下不锈钢电极极化曲线显示过钝化,不锈钢在该处理条件下的耐蚀性能较好;动态模拟试验结果显示,阻垢剂浓度为1 mg·L~(-1),加酸调节pH值在7.8~8.3范围内,循环水浓缩倍率可以提高到4,并且维持循环水稳定运行。
引文
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[3]周本省.工业冷却水处理的物理方法及工程应用[M].北京:化学工业出版社,2008.
[4]Lipus L C,Acko B,Hamler A.Electromagnets lor high-flow water processing[J].Chemical Engineering and Processing,2011(50):952-958.
[5]Marek Gryta.The influence of magnetic water treatment on CaCO;scale formation membrane distillation process[J].Separation and Purification Technology,2011(80):293-299.
[6]Marcelo I P.Reis,Aline D Goncalves,Fernando de C da Silva.Synthesis and evaluation of D-gluconamides as green mineral scales[J].Carbohydrate Research,2012(35)3:6-12.
[7]Ketrane R,Saidani B,Gil O.Efficiency of five scale inhibitors on calcium carbonate precipitation from hard water:Effect of temperature and concentration[J].Desalination,2009(249):1397-1404.
[8]Shi W Y,Zhang SG,Xia M Z,et al.Quantum chemistry studies on the scale inhibition mechanism of methylene phosphonic acid[J].Technology of Water treatment,2006,32(1):37-40.
[9]Cefalas A C,Kobe S,Drazic G.Nanocrystallization of CaCO_3 at solid/liquid interfaces in magnetic field:A quantum approach[J].Applied Surface Science,2008(254):6715-6724.
[10]黄娟.循环冷却水新型加酸工艺配方研究[D].天津:天津大学硕士学位论文,2008.
[11]裴利华,闫秀珍,包书坤.循环冷却水加酸处理在乌海热电厂的研究与应用[J].内蒙古电力技术,2007(25):26-28.
[12]张燕.高硬度、高碱度循环冷却水加酸处理技术[J].高新技术,2007(9):3.
[13]Mahbuboor R Choudhury,Hsieh MingKai,Radisav D Vidic.Corrosion management in power plant cooling systems using tertiary-treated municipal wastewater as makeup water[J].Corrosion Science,2012(4):42.
[14]张广文.循环冷却水浓缩倍率计算方法的试验研究[J].热力发电,2008,37(12):90-93.
[15]鲍其鼐.我国冷却水处理剂廿年[J].工业水处理,2000,20(增刊):5-8.
[16]杨武,顾睿祥,肖景光.金属的局部腐蚀[M].北京:化学工业出版社,1995.
[17]葛红花,陈霞,张慧鑫,等.不同水质稳定剂对凝汽器不锈钢管的缓蚀性能[J].中国电力,2007,40(11):72-74.
[18]Ge H Ha,Guo R F,Guo Y S,et al.Scale and corrosion inhibition of three water stabilizers used in stainless steel condensers[J].Corrosion,2008,64(6):553-557.