中压凝结水精处理系统高速混床偏流原因分析及防范

Analysis and Precautions for High-Speed Mixed Bed Flow Leaning of Condensate Polishing Treatment System

某电厂凝结水精处理系统高速混床偏流,投运后不久即出现周期制水量不达标问题。设备停运检查后发现,布水多孔板损坏。从混床设备本身结构、精处理系统配置和操作步序等多方面考察分析,查明布水多孔板损坏是"水锤"冲击所致。为此,更换了所有布水多孔板,并加强布水多孔板强度及其与混床本体联接强度。经过整改,设备性能恢复正常,彻底解决了偏流问题。此外,根据混床出现的这一问题,对新建凝结水精处理高速混床设备防止偏流提出了几点建议。

Shortly ＇after the commitment of the condensate polishing treatment system, the problem of insufficient cyclic water production emerged because of high-speed mixed bed flow leaning. Through the inspection after shutting down the equipment, the damaged water porous plate turned out to be the culprit. Subsequent analysis of the mixed bed equipment structure, the configuration of the polishing treatment system, and the operation procedures demonstrated that the water hammer shock caused the damage of water porous plate. Therefore, all of the water porous plates have been replaced with the water porous plates and their connection to the mixed bed strengthened. After such improvements, the system performance is back to normal and the problem of flow leaning is completely solved. Besides, in terms of the problem arising from the mixed bed, several suggestions are proposed to prevent flow leaning for the high-speed mixed bed equipment of newly-buih condensate polishing treatment systems.