标准规格滤筒除尘器运行阻力及脉冲清灰实验研究

Experiment of filtering resistance and pulse-jet dust-cleaning of standard type cartridge filters

对比了下进风和侧进风方式下除尘器的阻力以及滤筒水平和竖直安装时清灰后的阻力,测试了采用不同喷嘴型式时滤筒侧壁的正压力峰值。结果表明,侧进风时滤筒除尘器阻力较大;卧式滤筒除尘器上侧表面不能有效清灰,清灰后阻力比立式滤筒除尘器大;脉冲清灰时粉尘从滤筒壁面上部到下部依次脱落,采用高效诱导喷嘴可以获得更好的滤筒内部流场,解决了滤筒上部清灰难的问题,提高了清灰效率,延长了滤筒使用寿命。

Compares the resistance of filters with bottom/side dust air inlets, and the resistance of horizontal/vertical cartridge filters installed and tests the peak positive pressure inside the filters with different types of nozzles. The results show that the resistance of cartridge filter with bottom dust air inlet is greater, that the horizontal filtering cartridge cannot remove dust effectively from the top surface of the filter, therefore its resistance after dust-cleaning is greater than that of the vertical one, and that the order of dust separation is from top to bottom of the cartridge in turn, suggesting that adopting induce nozzles can obtain a better flow distribution inside the cartridge filter, solving the dust-cleaning problem of the upper cartridge, improving the dust-cleaning efficiency and increasing the service life of the filtering cartridge.