Kelly Kerry E, Wagner David A, Lighty JoAnn S, Sarofim Adel F, Bretecher Brad, Holden Bruce, Helgeson Norm, Sahay Keshav, Nardi Zack
Department of Chemical and Fuels Engineering, University of Utah, Salt Lake City, Utah, USA.
J Air Waste Manag Assoc. 2004 Jan;54(1):83-92. doi: 10.1080/10473289.2004.10470884.
In-service diesel engines are a significant source of particulate matter (PM) emissions, and they have been subjected to increasingly strict emissions standards. Consequently, the wide-scale use of some type of particulate filter is expected. This study evaluated the effect of an Engelhard catalyzed soot filter (CSF) and a Rypos electrically heated soot filter on the emissions from in-service diesel engines in terms of PM mass, black carbon concentration, particle-bound polycyclic aromatic hydrocarbon concentration, and size distribution. Both filters capture PM. The CSF relies on the engine's exhaust to reach the catalyst regeneration temperature and oxidize soot, whereas the electrically heated filter contains a heating element to oxidize soot. The filters were installed on several military diesel engines. Particle concentrations and compositions were measured before and after installation of the filter and again after several months of operation. Generally, the CSF removed at least 90% of total PM, and the removal efficiency improved or remained constant after several months of operation. In contrast, the electrical filters removed 44-69% of PM mass. In addition to evaluating the soot filters, the sampling team also compared the results of several real-time particle measurement instruments to traditional filter measurements of total mass.
在用柴油发动机是颗粒物（PM）排放的一个重要来源，并且它们已经面临日益严格的排放标准。因此，预计某种类型的颗粒过滤器将得到广泛应用。本研究从PM质量、黑碳浓度、颗粒结合多环芳烃浓度和粒径分布方面，评估了恩格尔哈德催化烟灰过滤器（CSF）和里波斯电加热烟灰过滤器对在用柴油发动机排放的影响。两种过滤器都能捕获PM。CSF依靠发动机排气达到催化剂再生温度并氧化烟灰，而电加热过滤器包含一个加热元件来氧化烟灰。这些过滤器安装在几台军用柴油发动机上。在安装过滤器之前和之后以及运行几个月后再次测量颗粒浓度和成分。一般来说，CSF去除了至少90%的总PM，并且在运行几个月后去除效率提高或保持不变。相比之下，电过滤器去除了44 - 69%的PM质量。除了评估烟灰过滤器外，采样团队还将几种实时颗粒测量仪器的结果与传统的总质量过滤器测量结果进行了比较。
