Abstract

Tobacco dust represents a critical threat to the operators’ respiratory health. Even when wet scrubbers display high purification efficiencies and strong adaptability to dust, their potential applications in the tobacco industry have not been studied. In the present research, removal efficiency of wet scrubber for tobacco dust and fine dust were examined at laboratory and industrial level. Results showed that the dust removal efficiency of the wet scrubber under laboratory conditions reached a maximum value of 99.17%. In addition, the dust discharge concentration was reduced to a minimum value of 1.1 mg/m3. Our data indicated that after using the wet scrubber, large dust particles (≥10 μm) were more effectively removed than fine dust particles (≤5 μm). After the use of the wet scrubber at the industrial facility, the overall dust removal efficiency reached a value of 98.9%, and dust concentration at the discharge point was as low as 1 mg/m3. This value complies with the ultra-low discharge standard and industrial production requirements. Our study demonstrated the feasibility of using wet scrubbers in the removal of tobacco dust and provides new insights for dust suppression in the tobacco processing industry.

Highlights

  • Tobacco dust is a complex mixture of different components generated during tobacco processing

  • Tobacco dust is mainly produced during shredding, drying, stem pretreatment, flavoring and casing, stem pressing, expansion, roll-packing, and filter rod manufacturing

  • Inconcluconcluwhile sion, the wet scrubber used in the present investigation showed a higher removal sion, the wet scrubber used in the present investigation showed a higher removal ertheless, it is urgent to perform the related studies in order to determine their potential use for the removal of dust particles with sizes of 5 μm and below

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Summary

Introduction

Tobacco dust is a complex mixture of different components generated during tobacco processing. It is known that in enclosed environments, when tobacco dust is not promptly removed and air is not cleaned, turbulent flow causes particle resuspension. This situation may seriously affect the operators’ occupational health and safety [3]. Some scholars conducted different studies and concluded that tobacco dust can affect the pulmonary and ventilatory functions of exposed workers, and in some cases trigger pneumonia. The present study used different laboratory and industrial field tests that carried out the research on the comprehensive purification efficiency of tobacco dust and the purification of fine dust in order to determine the applicability of self-excited dust collectors for the removal of tobacco dust

Laboratory Experiments
Industrial
Total Dust Removal Performance
Dust Particle Size Distribution after Purification
Determination
Factors Influencing Wet Scrubbers Efficiency for the Removal of Tobacco Dust
Results in 0Figure 5a0indicated at a5liquid level
Size Distribution of Tobacco Dust Particles after Purification
Performance of Wet Scrubbers
Performance of Wet Scrubbers in Industrial Applications
Conclusions

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