分室脉冲引射袋式除尘器的清灰机理

分室脉冲引射除尘是一种新的除尘方式,它具有在线清灰、结构简单、运行可靠的优点.为了揭示分室脉冲引射袋式除尘器的清灰机理,首先运用可压缩气体绝热流动能量方程推导出喷口的流速和流量,继而根据自由射流理论推导出不同射流断面的平均动能计算公式,最终根据反吹风速与平均动能的关系,得到了反吹风速的计算方法.同时,根据实验模型的测定...

Dust-cleaningmechanism of a chamber-type jet injection bag filter

Chamber type jet injection is a new type of dust-cleaning, which has many advantages including an on-line cleaning system, simple structure and reliable performance. In order to demonstrate the mechanism of dust-cleaning, the coercible gas heat insulating energy equation was firstly used to deduce the velocity and air mass and then according to free-jet stream theory, the amount of air and average energy of the injecting profile were deduced. Thus the reversal air velocity was obtained. A bag filter model was suggested according to the theoretical investigation. And the relationship between detachment stress and dust-cleaning efficiency was obtained based on experiments. Accordingly, the reverse air velocity and the diameter required for the predetermined dust-cleaning efficiency could be calculated under a certain dust load. The investigation results provided a reference for the design of dust-cleaning systems.