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金山热电厂于七九年开始在φ3000毫米的离子交换器上采用无压法逆流再生,运行至今情况良好。与应用空气顶压或水顶压的方法相比可节约电和水,并能简化附属设备、减少投资。最近,杨树浦发电厂对无压法逆流再生的条件进行了中型试验。试验的结果是:当排液管小孔流速在0.1米/秒左右、排液管上部压脂层高度大于70毫米时(大型设备为安全可靠起见可增加压脂层高度为100～200毫米),即可达到再生时树脂不乱层的效果。
Jinshan Thermal Power Plant began to use the non-pressure countercurrent regeneration on the φ3000 mm ion exchanger in 1979 and it has been operating in good conditions. Compared with the application of the air pressure or water pressure method, electricity and water can be saved, and the auxiliary equipment can be simplified and the investment can be reduced. Recently, the Yangshupu Power Plant conducted a mid-range test on the conditions of pressureless countercurrent regeneration. The result of the test is: when the drainage tube orifice flow rate is about 0.1 m/s, and the upper lip layer of the drainage tube is greater than 70 mm (the large equipment can increase the grease layer height by 100 to 200 mm for safety and reliability). , you can achieve the effect of the resin does not mess with the regeneration.