气水喷嘴雾化特性实验研究
发布时间：2018-10-12 17:49
【摘要】：为研究不同类型气水喷嘴的雾化效果及气体流量和水流量对雾化效果的影响,基于实验室自行设计的气水喷雾实验系统,利用JL-3000型激光粒度分析仪及电磁流量计和转子流量计对气水喷嘴流量特性及最佳工况条件进行了实验研究。采用origin软件对数据进行分析得到雾化粒径及雾滴相对尺寸ΔS随气体流量及水流量的变化曲线,并以此衡量喷嘴的雾化效果。利用喷雾学、流体力学及多相流等理论对实验现象进行分析并得到喷嘴的最佳工况条件。实验结果表明:当水流量一定时,随着气体流量的增加,雾滴粒径减小速度由快变慢。当气体流量为80 L/min时,水流量为5 L/h即气液比为960时干雾喷嘴雾化效果最好,扇形喷嘴和锥形喷嘴气水流量分别为100 L/min,5 L/h和140 L/min,5 L/h,即气液比分别为1 200和1 680时其雾化效果最好。通过对比最佳雾化效果发现干雾喷嘴的雾滴粒径及雾滴相对尺寸最小,可以达到更好的雾化效果和经济效益。
[Abstract]:In order to study the atomization effect of different types of gas-water nozzles and the effect of gas flow and water flow on the atomization effect, the air-water spray experimental system was designed by the laboratory. JL-3000 laser particle size analyzer, electromagnetic Flowmeter and rotor Flowmeter are used to study the flow characteristics and optimal operating conditions of air-water nozzle. The change curves of atomization particle size and relative size of droplet 螖 S with gas flow and water flow were obtained by origin software, and the atomization effect of the nozzle was measured. The experimental phenomena were analyzed by using the theories of spray, hydrodynamics and multiphase flow, and the optimum operating conditions of the nozzle were obtained. The experimental results show that when the water flow rate is constant, the droplet size decreases from fast to slow with the increase of gas flow rate. When the gas flow rate is 80 L/min and the water flow rate is 5 L / h, that is, when the gas-liquid ratio is 96, the atomization effect of the spray nozzle is the best. The best atomization effect is obtained when the gas-water flow rate of sector nozzle and conical nozzle is 100 L / min 5 L / h and 140 L / min 5 L / h respectively, that is, the gas-liquid ratio is 1 200 and 1 680 respectively. By comparing the optimum atomization effect, it is found that the droplet size and the relative size of the droplet are the smallest, which can achieve better atomization effect and economic benefit.
【作者单位】： 北京科技大学教育部金属矿山高效开采与安全重点实验室;
【基金】：国家自然科学基金项目(51604018) 北京市自然科学基金项目(8164060)
【分类号】：TD714.4
本文编号：2267047
[Abstract]:In order to study the atomization effect of different types of gas-water nozzles and the effect of gas flow and water flow on the atomization effect, the air-water spray experimental system was designed by the laboratory. JL-3000 laser particle size analyzer, electromagnetic Flowmeter and rotor Flowmeter are used to study the flow characteristics and optimal operating conditions of air-water nozzle. The change curves of atomization particle size and relative size of droplet 螖 S with gas flow and water flow were obtained by origin software, and the atomization effect of the nozzle was measured. The experimental phenomena were analyzed by using the theories of spray, hydrodynamics and multiphase flow, and the optimum operating conditions of the nozzle were obtained. The experimental results show that when the water flow rate is constant, the droplet size decreases from fast to slow with the increase of gas flow rate. When the gas flow rate is 80 L/min and the water flow rate is 5 L / h, that is, when the gas-liquid ratio is 96, the atomization effect of the spray nozzle is the best. The best atomization effect is obtained when the gas-water flow rate of sector nozzle and conical nozzle is 100 L / min 5 L / h and 140 L / min 5 L / h respectively, that is, the gas-liquid ratio is 1 200 and 1 680 respectively. By comparing the optimum atomization effect, it is found that the droplet size and the relative size of the droplet are the smallest, which can achieve better atomization effect and economic benefit.
【作者单位】： 北京科技大学教育部金属矿山高效开采与安全重点实验室;
【基金】：国家自然科学基金项目(51604018) 北京市自然科学基金项目(8164060)
【分类号】：TD714.4
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1 孙秋爽;除尘器组合喷嘴雾化特性分析[D];华北理工大学;2015年
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