高压柱塞泵在线水冲洗技术在脱硝空预器上的应用

Application of High-Pressure Piston Pump Online Water Wash Technology in the Denitrification Air Pre-heater

利用以高压柱塞泵为核心设备的在线高压水冲洗技术成果,解决了回转式空预器突发堵灰的异常情况。针对脱硝空预器堵灰严重的现象,尝试了空预器在线进行高压水冲洗的方法,冲洗效果证明,高压水在线冲洗可使空预器烟气侧的差压下降,解决了空预器的堵灰问题,并提出了防范措施。同时,对采用柱塞式高压泵进行在线水冲洗,提出了冲洗操作时需注意的事项及应用中存在的问题。

This paper describes the use of high-pressure piston pump for the core equipment online high-pressure water wash technology achievements,which solves 600 MW unit rotary air preheater sudden blockage.As to the ash clogging of the denitrification air preheater,air preheater online high pressure washing method is attempted.The result shows the high pressure water online washing can decrease the pressure difference of air preheater on gas side,resolve the ash blocking.A precaution is proposed.Meanwhile notices and problems of application is proposed when piston pump needs online water washing.