Abstract
This study investigates a new air-washing cleaning system that directly injects compressed air on the filter surface for filter regeneration in a fabric filter (FF) dust collector. A pilot-scale FF is designed to test the new system and to compare it with the conventional pulse-jet cleaning system with regard to filter clogging by fume particles. A pleated filter with a filtration area of 2.4 m2 is installed in the FF and a thermal steel spraying gun is used to supply the fume particles. Pressure drop and particle emission concentration are monitored to examine the effect of the new system on filter regeneration and collection efficiency. The results show that the air-washing cleaning is effective for filter regeneration, as it allows the FF to operate stably for a long time, whereas the pulse-jet cleaning fails to achieve filter regeneration, resulting in a continuously increasing pressure drop. In addition, air-washing cleaning shows better performance on collection efficiency than the pulse-jet cleaning method, as it reduces the outlet particulate matter concentration to less than half that of the pulse-jet cleaning.
| Original language | English |
|---|---|
| Article number | 121186 |
| Journal | Journal of Hazardous Materials |
| Volume | 383 |
| DOIs | |
| State | Published - 5 Feb 2020 |
Bibliographical note
Funding Information:This work was funded by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2017R1C1B1008811) and funded by the Korea Ministry of Environment (MOE) as “the Environmental Health Action Program (2016001360005).
Publisher Copyright:
© 2019 Elsevier B.V.
Keywords
- Fabric filters
- Filter clogging
- Filter collection efficiency
- Filter regeneration
- Pulse-jet cleaning
- Submicron fume particles