济钢焦化厂循环冷却水系统运行管理及效果

Operation Management and Effect of Recycle Cooling Water System in the Coking Plant of Jinan Steel

由于循环冷却水系统在运行过程中会产生水垢附着、设备腐蚀和微生物滋生的危害,济钢焦化厂根据水质判断和成本运行比较,选取阻垢缓蚀剂CW-19304,通过分析其阻垢、缓蚀效果,浓缩倍数应控制在2.0～2.5,投加浓度为30～40mg/L。交替使用氧化性杀菌剂和非氧化性杀菌剂,控制系统中的菌藻滋生,优氯净1次/周,控制余氯在0.5～0.8 mg/L;异噻唑啉酮1次/月,100～200 mg/L。检测结果表明,循环水各项质量指标稳定。

Scale deposition, equipment eroding and microbe multiplication may occur within the recycle cooling water system. With the consideration of the water quality and cost of Jinan Steel Coking Plant, corrosion and the scale inhibitor CW- 19304 was adopted. Analyzing result shows that the concentration rate should be 2.0 to 2.5 and the concentration 30 to 40 mg/L Oxidizing and non-oxidizing bactericide are cast alternately to controlling breeding of bacteria and algae of the system. The cast includes that sodium dichlomisocyanurate was once a week, controlling residual chlorine 0.5 to 0.8 mg/L and isothiazolone was once a month and 100 to 200 mg/L Then the quality indexes of recycle water are reliable.