• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of loss prevention in the process industries >Dust explosion risk moderation for flocculent dusts
【24h】

Dust explosion risk moderation for flocculent dusts

机译：絮凝粉尘的粉尘爆炸风险控制

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The research presented in this paper is focused on dust explosions of coarse and fine flocculent (or fibrous) samples of wood and polyethylene. Hybrid mixtures of fibrous polyethylene and admixed ethylene were also studied. Experimentation was conducted by following standardized test procedures and using standardized apparatus for determination of maximum explosion pressure, size-normalized maximum rate of pressure rise, minimum explosible concentration, minimum ignition energy, and minimum ignition temperature. A general trend was observed of enhanced explosion likelihood and consequence severity with a decrease in material diameter, as well as enhanced consequence severity with admixture of a flammable gas to the combustion atmosphere. The same phenomena are well-established for dusts composed of spherical particles; this highlights the importance of inherently safer design and the principle of moderation in avoiding the generation of fine sizes of flocculent dusts and hybrid mixtures of such materials with flammable gases. In addition to presenting experimental findings, the paper describes phenomenological modelling efforts for the flocculent polyethylene using four geometric equivalence models: radial equivalence, volumetric equivalence, surface area equivalence, and specific surface area equivalence. The surface area equivalence model was found to yield the best estimates of maximum rate of pressure rise for the flocculent polyethylene samples investigated experimentally.
机译：本文提出的研究重点是木材和聚乙烯的粗，细絮状（或纤维状）样品的粉尘爆炸。还研究了纤维状聚乙烯和混合乙烯的混合混合物。通过遵循标准化的测试程序并使用标准化的设备进行实验，以确定最大爆炸压力，尺寸归一化的最大压力上升率，最小爆炸浓度，最小着火能量和最小着火温度。观察到了总体趋势，即随着材料直径的减小，爆炸的可能性和后果的严重性增强，以及将易燃气体与燃烧气氛混合后的后果严重性增强。对于由球形颗粒组成的粉尘，已经建立了相同的现象。这突出了固有安全设计和适度原则在避免产生细小尺寸的絮状粉尘以及此类材料与易燃气体的混合混合物中的重要性。除了提供实验结果外，本文还使用四个几何当量模型描述了絮凝聚乙烯的现象学建模工作：径向当量，体积当量，表面积当量和比表面积当量。发现表面积等效模型可以对实验研究的絮凝聚乙烯样品产生最大压力上升速率的最佳估计。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号