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Experimental study on the hazards of the jet diffusion flame of liquefied dimethyl ether

机译：液化二甲醚射流扩散火焰危害的实验研究

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摘要

Dimethyl ether (DME) has been considered as a substitute for diesel fuel because it has a low auto-ignition temperature and produces less NO_x, SO_x, and particulate matter. However, the introduction of DME vehicles needs widely available DME supply stations. Moreover, the preparation of safety regulations for DME supply stations is very important, and so safety data is needed. Therefore, the present paper reports the hazards of the DME jet diffusion flame, which is one of several hazardous properties of DME, by studying the results of leaking gas and liquid DME. DME jets were released horizontally from circular nozzles whose diameters were 0.2, 0.4, 0.8 and 2 mm, and the release pressure was varied from the saturated vapor pressure to 2 MPa. When gaseous DME was released at the saturated vapor pressure, the flame was blown out. However, when liquefied DME was released, the flame formed. We obtained the experimental equations for estimating the scale and thermal hazards of DME diffusion flames.
机译：二甲醚（DME）被认为可以替代柴油，因为它的自燃温度低，并且产生的NO_x，SO_x和颗粒物更少。但是，引入DME车辆需要广泛使用的DME供应站。此外，为DME供应站准备安全法规非常重要，因此需要安全数据。因此，本文通过研究泄漏的气体和液体DME的结果，报告了DME射流扩散火焰的危害，这是DME的几种危险特性之一。从直径为0.2、0.4、0.8和2mm的圆形喷嘴水平释放DME射流，并且释放压力从饱和蒸气压变化至2MPa。当在饱和蒸气压下释放气态DME时，火焰被吹灭。但是，当释放出液化的DME时，形成了火焰。我们获得了用于估计DME扩散火焰的规模和热危害的实验方程式。

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  • 来源
    《Fuel》 |2011年第7期|p.2508-2513|共6页
  • 作者

    Toshio Mogi; Hiroumi Shiina; Yuji Wada; Ritsu Dobashi;

  • 作者单位

    Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

    Research Core for Explosion Safety, National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    Research Core for Explosion Safety, National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dimethyl ether; DME; jet diffusion flame; flame size; flame radiation;

    机译：二甲醚DME;射流扩散火焰火焰尺寸火焰辐射;

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