化工进展 ›› 2018, Vol. 37 ›› Issue (06): 2166-2174.DOI: 10.16085/j.issn.1000-6613.2017-2157

• 能源加工与技术 • 上一篇    下一篇

生物柴油浸没喷吹的雾化特性

邓伟鹏1,2, 张小辉1,3, 冯立斌2, 王华1   

  1. 1 昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室, 云南 昆明 650093;
    2 昆明理工大学冶金与能源工程学院, 云南 昆明 650093;
    3 云南省复杂有色金属资源综合利用协同创新中心, 云南 昆明 650093
  • 收稿日期:2017-10-22 修回日期:2017-11-25 出版日期:2018-06-05 发布日期:2018-06-05
  • 通讯作者: 张小辉,博士,副教授,从事冶金过程节能减排研究。
  • 作者简介:邓伟鹏(1994-),男,硕士研究生。
  • 基金资助:
    国家自然科学基金联合基金项目(U1602272)。

Atomization characteristics of biodiesel immersion blown

DENG Weipeng1,2, ZHANG Xiaohui1,3, FENG Libin2, WANG Hua1   

  1. 1 State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
    2 Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
    3 Yunnan Synergy Innovative Center for Comprehensive Utilization of Complex Nonferrous Metal Resources, Kunming 650093, Yunnan, China
  • Received:2017-10-22 Revised:2017-11-25 Online:2018-06-05 Published:2018-06-05

摘要: 以生物柴油替代柴油进行浸没喷吹熔池熔炼是发展低碳铜冶炼的重要途径。针对该过程建立生物柴油浸没喷吹雾化流动过程计算模型,本文模拟计算了喷枪在水模型中浸没深度为20mm时不同油气比条件下生物柴油雾化颗粒的雾化特性,并实验验证了计算模型。研究结果表明:油滴颗粒的贯穿距随着空气流速的增加而增大;在气泡内油滴颗粒以一定的雾化半角向前扩散;当油滴颗粒到达气泡底部时,油滴颗粒以气泡底部平面为中心向整个空间扩散;气泡内距离喷枪轴向越远的观察面内大颗粒数目越多;油滴颗粒的索特平均直径(SMD)沿喷枪轴向先增大后减小;气泡内距喷枪口越远油滴颗粒SMD越大,进入水区域的油滴颗粒SMD逐渐减小;雾化空气流速越大,油滴颗粒SMD最大值的位置距喷口越远。

关键词: 生物柴油, 浸没喷吹, 雾化特性, 数值模拟

Abstract: It is an important way to develop low-carbon copper smelting by using biodiesel instead of diesel oil. The calculation model of biodiesel immersion atomization flow process was established and the immersion depth of the spray gun was calculated in the water model. The atomization characteristics of the biodiesel atomized particles under different oil/gas ratios were studied and the calculation model was verified by experiments. The results indicated that the penetration of oil droplets increased with the increase of air flow rate. In the bubble the oil droplets spread with a certain half radius of smoke. When the oil droplets particles reached the bottom of the bubble, the oil droplets diffused from the bubble bottom plane as the center to the entire space. The farther from the axis of the gun in the area of interest, the more the number of large particles within the bubble. The SMD of the oil droplet particles increased first and then decreased along the axial direction of the spray gun. The greater the distance between the bubble and the nozzle, the larger the oil droplets SMD, and the droplet particles SMD in the water area gradually decreased. The higher the atomization air flow rate, the greater the position of the oil droplet particle SMD farther from the nozzle.

Key words: biodiesel, immersive blown, atomization characteristics, numerical simulation

中图分类号: 

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