Abst'/> Carbon dioxide not suitable for extinguishment of smouldering silo fires: Static electricity may cause silo explosion
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biomass & bioenergy >Carbon dioxide not suitable for extinguishment of smouldering silo fires: Static electricity may cause silo explosion
【24h】

Carbon dioxide not suitable for extinguishment of smouldering silo fires: Static electricity may cause silo explosion

机译：二氧化碳不适合扑灭阴燃的筒仓火：静电可能导致筒仓爆炸

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

AbstractSmouldering fires in wood pellet silos are not uncommon. The fires are often difficult to deal with and extinguishment is a lengthy process. Injection of inert gases to prevent oxygen from reaching the smouldering fire zone and suppress combustion is a new firefighting strategy. This article argues that injection of inert carbon dioxide (CO2) into the silo headspace is unsafe. Carbon dioxide is generally available as a liquid under high pressure. When discharged, small particles of dry ice are formed. The rapid flow of particles can generate considerable amounts of static electricity, which can act as a source of ignition if ignitable pyrolysis gases are present. This article discusses a serious wood pellet smouldering fire and silo explosion in Norway in 2010, which took place when firefighters discharged portable CO2fire extinguishers into the headspace. The attempt to suppress the fire may have ignited pyrolysis gases. The article examines selected guidelines, standards, wood pellet handbooks and other literature and argues that the electrostatic hazard is widely under-appreciated. In the past, major explosions have been attributed to electrostatic ignition of flammable vapours during the release of CO2for fire prevention purposes. There is evidence to suggest that those early lessons learned have at least partly passed out of sight.Highlights•Deep-seated smoldering fires in wood pellets generate pyrolysis gases.•Flammable pyrolysis gases can travel and accumulate, e.g. in the silo headspace.•Fires cannot be fought with water, novel approaches call for injection of inert gas.•Injection of carbon dioxide may generate static electricity, leading to silo explosion.•Industry standards and pellet handbooks largely silent on the hazard.
机译： 摘要 在木屑筒仓中闷燃着火并不少见。火灾往往难以应对，灭火是一个漫长的过程。注入惰性气体以防止氧气到达阴燃的火焰区并抑制燃烧是一种新的灭火策略。本文认为向筒仓顶部空间注入惰性二氧化碳（CO 2 ）是不安全的。二氧化碳通常在高压下为液体。排出时，会形成小颗粒的干冰。颗粒的快速流动会产生大量的静电，如果存在可燃的热解气体，则静电可作为点火源。本文讨论了2010年挪威发生的严重的木屑阴燃和筒仓爆炸，当时消防员将便携式CO​​ 2 灭火器排放到顶部空间。抑制火势的尝试可能点燃了热解气体。该文章检查了选定的指南，标准，木屑颗粒手册和其他文献，并指出静电危害被普遍低估了。过去，发生重大爆炸归因于为防火目的释放CO 2 期间可燃气体的静电点火。有证据表明，这些早期的学习经验至少已部分消失。 突出显示 • < ce：para id =“ p0010” view =“ all”>木屑中的深se闷烧会产生热解气体。 • 易燃热解气体会传播并积聚，例如 • 不能用水灭火，新颖的方法需要注入惰性气体。 • 注入二氧化碳可能会产生静电，导致筒仓爆炸。 • 行业标准和颗粒手册在很大程度上

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