对火电厂循环冷却水浓缩倍率的分析研究

Analysis and Study of the Concentration Rate of the Circulating Cooling Water in a Thermal Power Plant

内蒙古某电厂循环冷却水系统实际运行时浓缩倍率只有1.9,现对其进行更换药剂试验。进行药剂筛选试验时,先对两种不同药剂进行静态模拟试验,确定当两种药剂加药量均为10mg/L时,阻垢效果最好;通过动态模拟试验确定JD～211A药剂的阻垢缓蚀性能要优于JD～211B药剂,并确定在不加酸时其安全浓缩倍率可达2.5,因此使用JD～211A药剂可节约大量补充水。最后对更换药剂所产生的经济性进行计算,验证了提高浓缩倍率每年会为企业带来124万多元的经济效益。

When the circulating cooling water system of a thermal power plant in Inner Mongolia was in actual operation,its concentration rate would be only 1.9.As a result,a chemical agent replacement test was performed.When a chemical agent sifting test was being performed,a static simulation test was first performed of two kinds of chemical agent.It has been determined that when the dosages of the two chemical agents are 10 mg/L,the fouling resistance effectiveness will attain its best.Through a dynamic simulation test,it has been verified that the fouling-resistance etching-retarding performance of JD^211A chemical agent is superior to that of JD^211B chemical agent.When no acid is added,the safe concentration rate can reach 2.5.Therefore,to use JD^211A chemical agent can save a large amount of makeup water.Finally,the cost-effectiveness by replacing the chemical agent was calculated.It has been verified that to enhance the concentration rate can bring about an economic benefit of more than RMB 1.24 million yuan each year to an enterprise.