1、BSI Standards PublicationBS EN ISO 17225-2:2014Solid biofuels Fuelspecifications and classesPart 2: Graded wood pelletsBS EN ISO 17225-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO17225-2:2014. It supersedes BS EN 14961-2:2011 which is withdrawn.The
2、 UK participation in its preparation was entrusted to TechnicalCommittee PTI/17, Solid biofuels.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsib
3、le for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 78140 7ICS 27.190; 75.160.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStanda
4、rds Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17225-2 May 2014 ICS 27.190; 75.160.10 Supersedes EN 14961-2:2011English Version Solid biofuels - Fuel specifications and classes - Part 2:
5、Graded wood pellets (ISO 17225-2:2014) Biocombustibles solides - Classes et spcifications des combustibles - Partie 2: Classes de granuls de bois (ISO 17225-2:2014) Feste Biobrennstoffe - Brennstoffspezifikationen und -klassen - Teil 2: Einteilung von Holzpellets (ISO 17225-2:2014) This European Sta
6、ndard was approved by CEN on 3 April 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning s
7、uch national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its o
8、wn language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
9、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR
10、MUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17225-2:2014 EBS EN ISO 17225-2:2014EN ISO 17225-2:2014 (E) 3 Foreword This document (EN ISO 17225-2:201
11、4) has been prepared by Technical Committee ISO/TC 238 “Solid biofuels” in collaboration with Technical Committee CEN/TC 335 “Solid biofuels” the secretariat of which is held by SIS. This European Standard shall be given the status of a national standard, either by publication of an identical text o
12、r by endorsement, at the latest by November 2014, and conflicting national standards shall be withdrawn at the latest by November 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsib
13、le for identifying any or all such patent rights. This document supersedes EN 14961-2:2011. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CEN-CE
14、NELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary,
15、Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17225-2:2014 has been approved by CEN as EN ISO 17225-2:2014 without any mo
16、dification. BS EN ISO 17225-2:2014ISO 17225-2:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and abbreviated terms . 35 Specification of graded wood pellets . 3Bibliography 9BS EN ISO 17225-2:2014I
17、SO 17225-2:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subj
18、ect for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IE
19、C) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be n
20、oted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifyin
21、g any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience o
22、f users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supple
23、mentary informationThe committee responsible for this document is ISO/TC 238, Solid biofuels.ISO 17225 consists of the following parts, under the general title Solid biofuels Fuel specifications and classes: Part 1: General requirements Part 2: Graded wood pellets Part 3: Graded wood briquettes Part
24、 4: Graded wood chips Part 5: Graded firewood Part 6: Graded non-woody pellets Part 7: Graded non-woody briquettesiv ISO 2014 All rights reservedBS EN ISO 17225-2:2014ISO 17225-2:2014(E)IntroductionThe objective of the ISO 17225 series is to provide unambiguous and clear classification principles fo
25、r solid biofuels; to serve as a tool to enable efficient trading of biofuels; to enable good understanding between seller and buyer as well as a tool for communication with equipment manufacturers. It also facilitates authority permission procedures and reporting.This part of ISO 17225 supports the
26、use of graded wood pellets for residential, small commercial and public buildings as well as industrial energy generation applications, which require classified pellet quality.The residential, small commercial and public building applications require higher quality fuel for the following reasons: Sm
27、all-scale equipment does not usually have advanced controls and flue gas cleaning. Appliances are not generally managed by professional heating engineers. Appliances are often located in residential and populated districts.NOTE 1 Pellets produced according to this part of ISO 17225 may be used in pe
28、llet stoves, which are tested according to European Standard EN 147851, pellet burners tested according to EN 152702and pellet boilers or integrated-pellet burner systems tested according to EN 30353.NOTE 2 For individual contracts, ISO 17225-1 can be used.Although these product standards may be obt
29、ained separately, they require a general understanding of the standards based on and supporting ISO 17225-1. It is recommended to obtain and use ISO 17225-1 in conjunction with these standards. ISO 2014 All rights reserved vBS EN ISO 17225-2:2014BS EN ISO 17225-2:2014Solid biofuels Fuel specificatio
30、ns and classes Part 2: Graded wood pellets1 ScopeThis part of ISO 17225 determines the fuel quality classes and specifications of graded wood pellets for non-industrial and industrial use. This part of ISO 17225 covers only wood pellets produced from the following raw materials (see ISO 17225-1, Tab
31、le 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.Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this part of ISO 17225. Torrefaction is a mild pre-treatme
32、nt of biomass at a temperature between 200 C to 300 C.2 Normative referencesThe following referenced documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, th
33、e latest edition of the referenced document (including any amendments) applies.NOTE ISO standards describing methods for analysis of fuel properties listed in the Bibliography, will become normative references when they are published.ISO 16559, Solid biofuels Terminology, definitions and description
34、s1)ISO 16948, Solid biofuels Determination of total content of carbon, hydrogen and nitrogen2)ISO 16968, Solid biofuels Determination of minor elements3)ISO 16994, Solid biofuels Determination of total content of sulfur and chlorine4)ISO 17225-1, Solid biofuels Fuel specifications and classes Part 1
35、: General requirementsISO 17828, Solid biofuels Determination of bulk density5)ISO 17829, Solid Biofuels Determination of length and diameter of pellets6)ISO 17831-1, Solid biofuels Determination of mechanical durability of pellets and briquettes Part 1: Pellets7)1) To be published.2) To be publishe
36、d.3) To be published4) To be published5) To be published.6) To be published.7) To be published.INTERNATIONAL STANDARD ISO 17225-2:2014(E) ISO 2014 All rights reserved 1BS EN ISO 17225-2:2014ISO 17225-2:2014(E)ISO 18122, Solid biofuels Determination of ash content8)ISO 18134-1, Solid biofuels Determi
37、nation of moisture content Oven dry method Part 1: Total moisture Reference method9)ISO 18134-2, Solid biofuels Determination of moisture content Oven dry method Part 2: Total moisture - Simplified method10)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in
38、ISO 16559 and the following apply.3.1wood pelletdensified biofuel made from woody biomass with or without additives usually with a cylindrical form, random length typically 5 to 40 mm and diameter up to 25 mm and broken endsNote 1 to entry: The raw material for wood pellets is woody biomass in accor
39、dance with Table 1 of ISO 17225-1. Pellets are usually manufactured in a die, with total moisture content usually less than 10 % of their mass on wet basis.Note 2 to entry: The woody biomass used as feedstock for pellet making is milled to size in accordance with customer specification. Determinatio
40、n of the particle size distribution of the constituents of pellets is done by ISO 17830.3.2additivematerial which has been intentionally introduced into the fuel feed stock to improve quality of fuel (e.g. combustion properties), to reduce emissions or to make production more efficientNote 1 to entr
41、y: Trace amounts of e.g. grease or other lubricants that are introduced into the fuel processing stream as part of normal mill operations are not considered as additives.3.3chemical treatmentany treatment with chemicals other than air, water or heatEXAMPLE Glue and paint.Note 1 to entry: Examples of
42、 chemical treatment are listed in ISO 17225-1.3.4commercial applicationfacility that utilises solid biofuel burning appliances or equipment that have similar fuel requirements as residential appliancesNote 1 to entry: Commercial applications should not be confused with industrial applications, which
43、 can utilize a much wider array of materials and have vastly different fuel requirements.8) To be published.9) To be published.10) To be published.2 ISO 2014 All rights reservedBS EN ISO 17225-2:2014ISO 17225-2:2014(E)4 Symbols and abbreviated termsThe symbols and abbreviated terms used in this part
44、 of ISO 17225 comply with the SI system of units as far as possible.d dry (dry basis)ar as receivedw-% weight-percentageA Designation for ash content on dry basis, Adw-%BD Designation for bulk density as received kg/m3D Designation for diameter as received, D mmDU Designation for mechanical durabili
45、ty as received w-%F Designation for amount of fines as received w-%, particles less than 3,15 mmL Designation for length as received, L mmM Designation for moisture content as received on wet basis, Marw-%Q Designation for net calorific value as received, qp,net,arMJ/kg or kWh/kg or MWh/t at constan
46、t pres-sureNOTE 1 1 MJ/kg equals 0,2778 kWh/kg (1 kWh/kg equals 1 MWh/t and 1 MWh/t is 3,6 MJ/kg). 1 g/cm3equals 1 kg/dm3. 1 mg/kg equals 0,000 1% or 1 ppm.NOTE 2 Designation symbols are used in combination with a number to specify property levels in Tables 1 and 2. For designation of chemical prope
47、rties, chemical symbols such as S (sulfur), Cl (chlorine), and N (nitrogen) are used and the property class is added at the end of the symbol.5 Specification of graded wood pelletsThe specification of the wood pellets is stated in accordance with Table 1, Table 2 and Figure 1. Sampling and analysis
48、of the properties shall be carried out in accordance with the methods mentioned in the normative references.Property classes A1, A2, I1 and I2 represents virgin wood and chemically untreated wood residues. In Table 1 A1 represents fuels which are low in ash and nitrogen content, while class A2 has s
49、lightly higher ash and nitrogen content. Property classes I1 and I2 have similar ash and nitrogen content as A2. Property classes B and I3 allow chemically treated industrial wood by-products and residues and chemically untreated used wood.Chemically treated wood by-products and residues from wood processing industry (1.2.2) and chemically untreated used wood (1.3.1) are included in class B and I3 as long as they do not contain heavy metals or halogenated organic compounds more than
