声波解堵提效技术在尿素热解炉上的应用

Application of acoustic blockage removal technique applied in urea pyrolysis furnaces

针对燃煤机组选择性催化还原脱硝系统尿素热解炉堵塞问题,以华电国际电力股份有限公司十里泉发电厂2×600MW燃煤机组为例,在声波解堵提效技术原理的基础上,根据电厂实际情况提出了在热解炉进口热风烟道布置可调频高声强声源的声波解堵提效改造方案。性能测试及实际应用表明,声波解堵系统投运后脱硝系统热解炉未再出现堵塞现象。

To solve the blockage of urea pyrolysis furnaces in selective catalytic reduction denitration systems in coal-fired plants,2×600 MW coal-fired units in Shiliquan Power Plant of Huadian Power International Corporation Limited was taken as an example.Base on the principle of acoustic blockage removal technique and operation situation of the power plant,an acoustic blockage removal system within adjustable-frequency high intensity acoustic source was installed in the hot air duct of a urea pyrolysis furnace to improve its efficiency.According to the performance test and operation efficiency,there has been no blockage in the furnace of denitration system after the application of the acoustic blockage removal system.