脉搏(音乐)
脉冲持续时间
喷射(流体)
沉积(地质)
脉冲激光沉积
材料科学
滤波器(信号处理)
体积流量
光学
脉冲重复频率
除尘器
环境科学
机械
物理
激光器
电气工程
地质学
电信
工程类
古生物学
沉积物
探测器
热力学
雷达
作者
Quanquan Wu,Xiaohai Li,Zhenqiang Xing,Qin Kuang,Jianlong Li,Shan Huang,Hong Huang,Zhifei Ma,Daishe Wu
出处
期刊:Atmosphere
[Multidisciplinary Digital Publishing Institute]
日期:2023-07-20
卷期号:14 (7): 1173-1173
被引量:2
标识
DOI:10.3390/atmos14071173
摘要
The re-deposition of detached dust during online pulse-jet cleaning is an important issue encountered during filter regeneration. To reduce dust re-deposition, multi-pulsing jet cleaning schemes were designed and experimentally tested. A pilot-scale pulse-jet cleaning dust collector was built with one vertically installed pleated filter cartridge. The effects of pulse duration and interval on the pulse pressure were tested, and the dust re-deposition rate and mechanism were studied and analyzed. It was found that, for the single-pulsing jet, the pulse duration had a critical value of approximately 0.080 s in this test, above which the pulse pressure remained at approximately 0.75 kPa and did not increase further. For the multi-pulsing jet with a small pulse interval (less than approximately 0.10 s), the pulse flows superimposed and reached a higher pulse pressure with a slight inhibition of dust re-deposition. For the multi-pulsing jet with a long pulse interval (over 0.15 s), dust re-deposition was clearly inhibited. The re-deposition rate decreased from 63.8% in the single-pulsing scheme to 24.4% in the multi (five)-pulsing scheme with the same total pulse duration of 0.400 s. The multi-pulsing scheme lengthens the duration of reverse pulse flow, resulting in more elapsed time for the detached dust to freely fall, and inhibiting the re-deposition of dust. The elapsed time in the five-pulsing jet scheme with the recommended pulse duration of 0.080 s and interval of 0.25 s was 2.8 times higher than that of the single-pulsing jet with the same total pulse duration.
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