School of Safety Engineering, Heilongjiang University of Science and Technology
School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing

为实现高效捕尘和快速降尘,基于雾化降尘实验平台结合微纳米气泡发生器,研究了微纳米气泡协同活性水溶液的特性、雾化粒径分布及降尘效率,分析微纳米气泡协同增效活性水降尘的作用机制。研究结果表明:微纳米气泡降低纯水溶液表面张力4.1mN/m,降低活性水溶液表面张力3.0mN/m,微纳米气泡水表面张力随静置时间增加逐渐恢复至略低于不含有微纳米气泡的状态;微纳米气泡浓度随预混时间先上升后下降并逐渐趋于稳定,随静置时间逐渐下降;微纳米气泡活性水的预混稳定浓度高于微纳米气泡水,且随静置时间的气泡破灭速率低于微纳米气泡水;微纳米气泡添加如入雾化降尘用水中,随供水压力增大,雾化液滴的粒径减小;供水压力相同条件下,微纳米气泡水的降尘效率大;微纳米气泡水具有更强的微细粉尘捕集能力,对保护职工生命安全健康,提高安全生产效率具有重要研究意义和应用价值。

In order to realize efficient dust capture and rapid dust reduction, based on the experimental platform of atomization and dust reduction combined with the micro-nano bubble generator, we tested the characteristics of the micro-nano bubble synergistic active water solution, atomization particle size distribution and dust reduction efficiency, and analyzed the mechanism of the micro-nano bubble synergistic synergistic active water dust reduction. The results show that: the micro-nano bubbles reduce the surface tension of pure water solution by 4. 1 mN/ m, and reduce the surface tension of active water solution by 3. 0 mN/ m, and the surface tension of micro-nano bubbles water gradually recovers to a state slightly lower than that of the state that doesn’t contain micro-nano bubbles with the increase of the standing time; the concentration of micro- nano bubbles firstly rises and then decreases with the pre-mixing time, and then tends to be stable, which gradually decreases with the standing time; the pre-mixing stable concentration of micro-nano bubbles active water is higher than the pre-mixing stable concentration of micro-nano bubbles active water. The pre-mixed stable concentration of micro-nano bubble water is higher than that of micro-nano bubble water, and the bubble burst rate with the resting time is lower than that of micro-nano bubble water; micro-nano bubbles are added into the atomized dust reduction water, with the increase of the water supply pressure, the particle size of the atomized droplets decreases; under the same conditions of the water supply pressure, the efficiency of the micro-nano bubble water for dust reduction is large; the micro-nano bubble water has a stronger ability to capture fine dust, which is important research significance for the protection of the workers’ life safety and health and improve the efficiency of safe production and the safety of the workers. It has important research significance and application value to protect the life and health of workers and improve the efficiency of safe production.

黑龙江省“百千万”工程科技重大专项资助项目(2020ZX04A01);黑龙江省“揭榜挂帅”科技攻关项目(2021ZXJ02A03)

刘永立,全金峰,方磊,等.微纳米气泡协同活性水雾化降尘实验研究[J].煤炭工程,2025,57(1):169-176.