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为探究超声波对高炉循环冷却水的阻垢效应,采用正交试验方法研究超声频率、功率和循环水流速对高炉循环冷却水Ca2+浓度的影响。结果表明:影响主次顺序为超声频率>循环水流速>超声功率;阻垢效果最佳组合参数为超声频率30kHz,循环水流速0.6m/s,超声功率为400W(100W/cm2换能器与循环水管接触面积),此条件下作用8hCa2+浓度为84.2mg/L,阻垢效果明显;对超声波作用下模拟水样的电导率与时间的关系进行了曲线拟合;当超声功率为400W时,运行8h后的实际能耗为3.571kW.h,效率最高,达到89.6%。
In order to investigate the scale inhibition effect of ultrasonic wave on circulating cooling water of blast furnace, orthogonal test was used to study the effect of ultrasonic frequency, power and circulating water velocity on the concentration of Ca2 + in blast furnace cooling water. The results show that: the order of influence is ultrasonic frequency> circulating water velocity> ultrasonic power; the best combination of scale inhibition parameters is ultrasonic frequency 30kHz, circulating water flow rate 0.6m / s, ultrasonic power 400W (100W / cm2 transducer and The contact area of circulating water pipe), under this condition, the concentration of 8hCa2 + was 84.2mg / L, and the effect of scale inhibition was obvious. The relationship between the conductivity and the time of the simulated water sample under ultrasonic wave was curve fitted; when the ultrasonic power was 400W, The actual energy consumption after running 8h is 3.571kW.h, the highest efficiency, reaching 89.6%.