磁化复配表面活性剂与压风细雾喷嘴耦合协同雾化降尘的性能研究

Synergy effect on dust reduction performance by coupling atomization with magnetized compound surfactant and pressure-air atomizing nozzle

为了提高雾化降尘性能、实现有效防控煤尘危害,基于磁化复配表面活性剂与压风细雾喷嘴耦合协同降尘机理,开展了关于溶液表面张力及雾化效率的实验研究。通过对阴离子和非离子单体活性剂溶液进行测试,发现当溶液质量分数为0.06%时其表面张力趋于稳定;之后进行了阴离子表面活性剂和非离子表面活性剂复配优化实验,当阴离子表面活性剂SDS和非离子表面活性剂FMEE的复配质量比为6∶4时复配溶液的表面张力达到最小值,所需最优溶液质量分数由0.06%降到0.03%;在复配表面活性剂的基础上进行了磁化测试,其最佳磁感应强度为400 mT;将磁化复配表面活性剂与压风细雾喷嘴结合实现耦合协同雾化增效的作用,耦合协同雾化效果高达74.8%,雾化效果比水提高了49.3%。

In order to improve the performance of atomization and dust reduction and realize effective prevention and control of coal dust hazards,the experimental study on solution surface tension and atomization efficiency was carried out based on the coupling mechanism of magnetized compound surfactant and pressure-air atomizing nozzle.By testing anionic and nonionic surfactant solutions,it was found that the surface tension tended to be stable when the mass fraction of the solution reached0.06%;then the optimization experiment of the combination of anionic surfactant and nonionic surfactant was carried out,the surface tension was minimized when the mass ratio of SDS to FMEE was 6∶4,meanwhile,the optimal solution mass fraction was reduced from 0.06%to 0.03%;the magnetization test was carried out on the basis of the compound surfactant,and the optimum magnetic induction strength was 400 m T;the coupling synergistic atomization effect was achieved by combining the magnetized surfactant and pressure-air atomization nozzle,the coupling synergistic atomization effect was up to 74.8%,which was 49.3%higher than that of water.