高温陶瓷过滤器循环过程的热态实验研究

在一套由3根滤管组成的高温陶瓷过滤实验装置上。在常温至573K范围内进行了过滤与脉冲反吹循环性能实验，分析了操作温度、过滤气速、反吹压力等操作参数对循环性能的影响。实验结果表明，过滤循环初始阶段滤管残余压降上升较快，随后上升趋势逐渐变缓；随着温度的升高，滤管的初始压降升高，形成的粉尘层也越疏松。过滤气速越低，滤管初始压降越低，反吹间隔越长。提高反吹压力有利于提高清灰效果，但压力过高反吹间隔反而变短。最后通过在573K下的连续循环实验得出了滤管残余压降，为高温陶瓷过滤器的工程设计提供了依据。

Thermal state experiment on cycle performance of high-temperature ceramic filters

A hot-model filter experimental apparatus with three ceramic filter candl/es was built. Filtration and pulse cleaning tests were carried out with the temperature range from ambient up to 573 K, The influences of gas temperature, filtration velocity and pulse-jet pressure on the filtration performance were investigated. The test results show that in the initial period of the filtration cycle, the residual pressure drop of the filter increases rapidly, and then increases slowly. When the temperature increases, the baseline pressure drop of the filter candles increases, and the dust cake becomes looser. A linear decrease in the baseline pressure drop was observed when the filtration velocity was increased. Higher pulse-jet pressure is beneficial to improving the regeneration of the filter candles, but the pulse interval is decreased if the pulse jet pressure is excessively high. On the basis of continuous filtration cycle experiment at 573K, the long term residual pressure drop was given. The test results can be used to design the hot gas ceramic filter.