Presentation on theme: "ISO 17225-pellets standards New international standards for residential and industrial pellets November 2013 Principal scientist Eija Alakangas, VTT Convenor."— Presentation transcript:
1ISO 17225-pellets standards New international standards for residential and industrial pellets November 2013Principal scientist Eija Alakangas, VTTConvenor of WG2 for CEN/TC 335 and ISO/TC 238
2European and international framework for solid biofuel standardisation LegislationStandardisationWTONo barriers to tradeISO/TC 238Solid biofuelsVienna agreement*EuropeanCommissionMandateCEN/TC 335Solid biofuelsStandardsResultsSupportingEU-fundedprojectsInformation to market actors of solid biofuels2* ISO standards will be published as EN ISO standards in Europe
3European (EN) pellet standards published EN General requirementsInclude all biomass raw materialsFlexible classification, each property selected separatetelyInclude classification of raw material, which is needed for the product standardsProduct standard EN Wood pellets for non-industrial useProperties are bound together to class A1, A2 and BENplus certification system is based on this standard with some exceptionsProduct standard EN Non-woody pellet for non-industrial useEN and 6 standards are targeted for non-industrial use in small-scale appliances, such as, households, small commercial and public sector buildings.
4Solid biofuels standardisation progress during 2000 - 2013 ISOInternational standards(≈60 under preparation)European standards will be superseded by ISO standards other countries make their own national decisionsENCEN/TSweighed votes 3 years in forcePrepared duringEuropean standardsEN (36 published)National standards withdrawn1 vote each country2 years preparation time3 years in forcePreparedTechnical specifications(27 published)National standards in forceweighed votes 5 years in forcePrepared2000200420062008201020122014
5International pellet standards (ISO) – 1 EN ISO General requirements (FDIS)Include all biomass raw materials and also aquatic biomassFlexible classification, each property selected separatetelyInclude classification of raw material, which is needed for product standardsIncludes also special property classes for thermally treated biomass pellets (e.g. torrefied pellets)EN ISO Graded pellets (FDIS)Table 1 for non-industrial useTable 2 for industrial use
6International pellet standards (ISO) – 2 Graded non-woody pellets – EN ISO (FDIS)Table 1 for agrobiomass blends and mixtures (classes A and B)Table2 for straw, miscanthus and reed canary grass pelletsEN ISO , 2 and 6 (FDIS stage)Values has been agreedstandards have been sent for final approval in May (voting)Standards will be published in beginning of year 2014ISO will supersede EN standards and will be published as EN ISO standards in EuropeGraded thermally treated densified biomass (proposal stage)Proposal for work item (WI) has been discussed in March in ISO/TC 238 meeting and there is support to also prepare this standardVoting for new WI will done soon and if accepted standard will be prepared within 2 years.SECTOR project is supporting planning and also AEBIOM torrefaction group.
7Specification and classes (EN ISO 17225-1) Classification is based on origin and source, major traded forms and propertiesHierarchical classification system in table format:1 Woody biomass2 Herbaceous biomass3 Fruit biomass4 Aquatic biomass5 Biomass blends and mixturesblends = intentional (composition known)mixtures = unintentionalChemical treatment defined as any treatment with chemicals other than air, heat or water (e.g. glued, painted, coated, lacqued or otherwise treated woodChemically treated material shall not include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values or higher than typical values of the country of origin.
8Solid biofuel utilisation chain Tables with property gradesin EN ISO to 7Origin/SourceTraded form(e.g. pellet)FuelproductionSolid biofuelBioenergyuseBiomassConversionDocumentation of origin(Table 1 in EN ISOProduct declarationEN series (in Europe)Fuel Quality AssuranceEN series (in Europe)
9Wood pellets for households and commercial applications Wood pellets for households and commercial applications* (EN ISO , Table 1)* Facility that utilise solid biofuel burning appliances or equipment that have similar fuel requirements as residential appliances.
10Specification of industrial wood pellets (EN ISO 17225-2 (1) PropertyStandardA1A2BOrigin and sourceEN ISO1.1.3 Stemwood1.2.1 Chemically untreated wood*1.1.1 Whole trees1.1.3 Stem wood1.1.4 Logging residues1.1 Forest plantation and other virgin wood1.2 By-products and residues1.3.1 Chemically untreated used woodDiameter and length (D and L, mm)ISO 17829D06, 6 ± 1;3,15 < L < 40D08, 8 ± 1;3,15 < L <40(1 % longer, <45mm)*Negligible levels of glue, grease and other timber production additives used in sawmills during production of timber and timber product from virgin wood are acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.
12Specification of residential wood pellets (ISO 17225-2) (3) PropertyStandardA1A2I3As (mg/kg d)ISO 16968< 1Cd (mg/kg d)< 0.5Cr (mg/kg d)< 10Cu (mg/kg d)Pb (mg/kg d)Hg (mg/kg d)< 0.1Ni (mg/kg d)Zn (mg/kg d)< 100Ash melting behaviour*CEN/TSInformative, should be stated* all temperatures SST, DT, HT and FT in oxidating conditions at 550oC.Pre-ashing temperature other than 550 oC should be stated.ENplus certification has 815oC.
13Wood pellets for industrial use (EN ISO 17225-2, Table 2)
14Specification of industrial wood pellets (ISO 17225-2 (1) PropertyStandardI1I2I3Origin and sourceISO1.1.3 Stemwood1.2.1 Chemically untreated wood*1.1 Forest plantation and other virgin wood1.2 By-products and residues1.3.1 Chemically untreated used woodDiameter and length (D and L, mm)ISO 17829D06, 6 ± 1;3,15 < L < 40D08, 8 ± 1;3,15 < L <40(1 % longer, <45mm)D10, 10 ± 1;D12, 12 ± 1;*Negligible levels of glue, grease and other timber production additives used in sawmills during production of timber and timber product from virgin wood are acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.
16Specification of industrial wood pellets (ISO 17225-2) (3) PropertyStandardI1I2I3As (mg/kg d)ISO 16968< 2Cd (mg/kg d)< 1Cr (mg/kg d)< 15Cu (mg/kg d)< 20Pb (mg/kg d)Hg (mg/kg d)< 0.1Zn (mg/kg d)< 200P (%)ISO 17830>99% (<3.15 mm)>95% (<2.0 mm)>60% (<0.1 mm)>90% (<2.0 mm)>50% (<0.1 mm)>97% (<3.15 mm)>85% (<2.0 mm)>40% (<0.1 mm)Ash melting behaviour*CEN/TSInformative, should be stated* all temperatures SST, DT, HT and FT in oxidating conditions (550oC).
17Additional information CEN and ISO Fuel specification standards: Eija Alakangas, VTT, telTraining material of wood pellets and non-woody pellets SolidStandards project (www.solidstandards.eu)This presentation is supported by PellCert project: