Fasta bränslen

Kommittébeteckning: SIS/TK 412 (Fasta bränslen)
Källa: ISO
Svarsdatum: den 13 nov 2020
Se merSe mindre
 

This document specifies the procedure for a determination of major and minor element concentrations in solid recovered fuel material by energy dispersive X-ray fluorescence (EDXRF) spectrometry or wavelength dispersive X-ray fluorescence (WDXRF) spectrometry using a calibration with solid recovered fuel reference materials or solid recovered fuel samples with known content. A semi-quantitative determination may be carried out using matrix independent standards.

X-ray fluorescence spectrometry may be used as a fast method for a qualitative overview of elements and impurities and after suitable calibration it is very useful for determining major elements or even minor elements (except Hg) in order to quickly identify increased concentrations of minor elements in solid recovered fuels (e.g. during SRF-production).

This document is applicable for the following elements: Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Br, Mo, Cd, Sb, Sn, Tl and Pb. Concentrations from approximately 0,000 1 % and above can be determined depending on the element, the calibration materials used and the instrument used.

Kommittébeteckning: SIS/TK 412 (Fasta bränslen)
Källa: ISO
Svarsdatum: den 13 nov 2020
Se merSe mindre
 

This document determines the fuel quality classes and specifications of graded hog fuel and wood chips for industrial use. It covers only hog fuel and wood chips produced from the following raw materials (see ISO 17225-1:—, Table 1):

— 1.1 forest, plantation and other virgin wood;

— 1.2 by-products and residues from wood processing industry;

— 1.3.1 chemically untreated used wood;

— 1.4 blends and mixtures.

This document covers hog fuel, which is produced with blunt tools, and wood chips, which are produced with sharp tools.

NOTE 1 1.2.2 By-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated) are not allowed include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see Annex B in ISO 17225-1) or higher than typical values of the country of origin.

NOTE 2 If class I4 includes chemically treated used wood (1.3.2), it can be only used in the installations permitted to use 1.3.2.