Xu Menghao1 ，Gong Qinglei2 ，Zhu Xuanyu1 ，Zhu Guangchun1 ，Pang Hao1 ，Lin Longyuan1
1. School of Environment and Resource， Southwest University of Science and Technology， Mianyang 621000， China；
2. China Metallurgical Construction Engineering Group Co. ， Ltd. ， Chongqing 401335， China
Abstract
Objective In the designed small cyclone tube group-cartridge composite dust collector， filter cartridges adopt a dust collection configuration of lateral air intake， which easily causes high-speed airflow to directly scour the filter cartridge surface， resulting in accelerated wear of filter materials and shortened service life. Uneven airflow organization causes local dust accumulation on the filter cartridge， leading to filter cartridge clogging and increased system resistance. To address these problems， baffle plates with different angles are introduced to optimize the uniformity of internal airflow organization in small cyclone tube group-cartridge composite dust collectors.
Methods Using Space Claim software， five models of the small composite dust collector were designed， including one without a baffle plate and four with baffle plate angles of 90°， 95°， 100°， and 105°， respectively， under the condition that the airflow cha-racteristics of the cyclone tube group were not disturbed without increasing the filter chamber size. Computational fluid dynamics software Fluent was adopted to conduct numerical simulation of the dust removal process. The RNG k-ε turbulence model was used to describe the airflow state. Reasonable boundary conditions and grid division schemes were established to ensure the accuracy and reliability of the simulation results. Through simulation， the flow field distribution characteristics， airflow velocity distribution patterns， and pressure variations inside the dust collector at different baffle plate angles were analyzed to determine the effect of the baffle plates on the uniformity of internal airflow organization in the dust collector. Meanwhile， a particulate phase was introduced to analyze the influence of the baffle plates on the dust removal efficiency of the cyclone tube group.
Results and Discussion At baffle angles of 90°， 95°， and 100°， the baffle plates effectively blocked the dispersed lateral intake airflow and solved the problem of airflow scouring on the filter cartridges. The internal airflow velocity in the filter chamber decreased by 75%， significantly improving the uniformity of airflow organization inside the dust collector. When the baffle plate angle increased to 105°， non-uniform airflow organization reappeared in the filter chamber during the dust removal process. Comparing the uniformity of airflow organization at different baffle plate angles， the best uniformity was achieved when the baffle plate angles were 95° and 100°. With the addition of particulate matter， it was found that the baffle plates did not affect the coarse particle separation of the cyclone tube group， demonstrating the feasibility of practical application. Under the condition with baffle plates， the dust removal efficiency was optimal at a baffle plate angle of 100°， reaching 91.855%， which was 0.252%， 0.144%， and 0.446% higher than those at baffle plate angles of 90°， 95°， and 105°， respectively.
Conclusion In the cyclone tube-cartridge composite structure， arranging baffle plates at a proper angle can effectively solve the airflow scouring problem and improve the uniformity of internal airflow organization. However， the baffle plate angle should not be excessively large， as an overly large angle tends to strengthen the airflow guiding effect of the baffle plates， leading to uneven airflow organization within the filter chamber. When the baffle plate angle is set to 100°， the uniformity of internal airflow organization in the filter chamber is optimal without affecting the primary dust removal performance of the cyclone tube group. This angle can serve as the optimal configuration for the small composite dust collector under the conditions of this study.
Keywords： compound dust collector； baffle plate； airflow organization； dust removal efficiency
Get Citation: Xu Menghao， Gong Qinglei， Zhu Xuanyu， et al. Simulation and optimization of airflow organization in small composite dust collectors［J］. China Powder Science and Technology， 2026， 32（4）： 1-11.
Received: 2025-12-21, Revised: 2026-05-20, Online: 2026-06-05.
Funding：The research was supported by the National Natural Science Foundation of China (Grant No. 52463026) and the Sichuan Science and Technology Plan Project (Grant No. 2024ZHCG0121).
DOI：10.13732/j.issn.1008-5548.2026.04.002
CLC No.：TB44；X964
Type Code: A
Serial No.：1008-5548（2026）04-0001-11
