Secondary Emissions Risk Assessment of Diesel Particulate Traps for Heavy Duty Applications
Secondary Emissions Risk Assessment of Diesel Particulate Traps for Heavy Duty Applications
复制标题
重型应用柴油颗粒捕集器的二次排放风险评估
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Wyser
中科院分区：
文献类型：
--
作者：
N. Heeb;A. Ulrich;L. Emmenegger;J. Czerwiński;A. Mayer;M. Wyser
大多数微粒捕集器都能有效地捕集柴油机排气中的碳烟，但其形成二次排放的潜在危害必须加以控制。柴油机微粒过滤器（DPF）的再生主要由金属添加剂或金属涂层支持。某些贵金属或过渡金属可促进有毒二次排放物的形成，如二恶英、多环芳烃（PAH）、硝基PAH或其他挥发性成分。此外，与添加剂金属相关联的颗粒捕集器可以穿透过滤器系统，或者涂层金属可以从涂层系统中释放。VERT测试程序是专门开发的，以评估在捕集器中形成二次污染物的潜在风险。本研究概述了VERT测试程序。将讨论不同燃料添加剂和涂层金属的适用性方面，并介绍捕集器和添加剂引起的有毒二次排放物形成的实例。
Most particulate traps efficiently retain soot of diesel engine exhaust but the potential hazard to form secondary emissions has to be controlled. The Diesel Particle Filter (DPF) regeneration is mainly supported by metal additives or metallic coatings. Certain noble or transition metals can support the formation of toxic secondary emissions such as Dioxins, Polycyclic Aromatic Hydrocarbons (PAH), Nitro-PAH or other volatile components. Furthermore, particulate trap associated with additive metals can penetrate through the filter system or coating metals can be released from coated systems. The VERT test procedure was especially developed to assess the potential risks of a formation of secondary pollutants in the trap. The present study gives an overview to the VERT test procedure. Aspects of suitability of different fuel additives and coating metals will be discussed and examples of trap and additive induced formation of toxic secondary emissions will be presented.