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MULTIFACETED APPROACH FOR CHARACTERIZATION OF SOLID RESIDUES FROM SLUDGE INCINERATION

机译：污泥焚烧中固体残渣表征的多元化方法

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摘要

The Italian Water Research Institute (IRSA) carried out sludge incineration tests on a demonstrative plant equipped with a circulating fluidized bed furnace. Aim of this paper is to present the potential applicability of non-conventional techniques for solid residues characterization. Results of five tests performed under different operating conditions are discussed. Incineration solid residues were sampled from the cyclone, downstream the furnace (cyclone ash, CA), and from the bag filter (filter ash, FA). Different techniques were used by the Mechanical and Industrial Engineering Department of the "Roma TRE" University, which cooperated with IRSA in the research project, to characterize incineration products and to correlate with process parameters. The X-ray Diffraction (XRD) technique was used to estimate the amount of sand, lost from the furnace, in CA and FA samples. Particle size distribution was measured using Low Angle Laser Light Scattering (LALLS). Scanning Election Microscopy associated with Energy Dispersive Spectroscopy (SEM/EDS) was used to correlate size and shape of individual particles with chemical composition.This multifaceted approach to characterize incineration residues appears promising, providing additional and complementary information to the traditional chemical characterization.
机译：意大利水研究所（IRSA）对配备循环流化床炉的示范工厂进行了污泥焚烧测试。本文的目的是介绍非常规技术对固体残留物表征的潜在适用性。讨论了在不同操作条件下执行的五项测试的结果。从旋风分离器，炉子下游（旋风灰，CA）和袋式除尘器（滤灰，FA）中取样焚烧固体残留物。与IRSA合作的“ Roma TRE”大学机械与工业工程系采用了不同的技术来表征焚烧产品并与工艺参数关联。 X射线衍射（XRD）技术用于估算CA和FA样品中从炉中流失的沙子量。使用低角度激光散射（LALLS）测量粒度分布。与能量色散光谱法（SEM / EDS）关联的扫描电子显微镜用于将单个颗粒的大小和形状与化学成分相关联。这种表征焚烧残留物的多方面方法似乎很有希望，为传统化学表征提供了额外的补充信息。

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