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© Eija Alakangas, VTT Principal scientist Eija Alakangas, VTT Convenor of WG2 for CEN/TC 335 and ISO/TC 238 New international standards for residential.

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Presentation on theme: "© Eija Alakangas, VTT Principal scientist Eija Alakangas, VTT Convenor of WG2 for CEN/TC 335 and ISO/TC 238 New international standards for residential."— Presentation transcript:

1 © Eija Alakangas, VTT Principal scientist Eija Alakangas, VTT Convenor of WG2 for CEN/TC 335 and ISO/TC 238 New international standards for residential and industrial pellets November 2013 ISO pellets standards

2 © Eija Alakangas, VTT 2 * ISO standards will be published as EN ISO standards in Europe2 European and international framework for solid biofuel standardisation WTO ISO/TC 238 Solid biofuels European Commission Supporting EU-funded projects CEN/TC 335 Solid biofuels Mandate No barriers to trade Standards LegislationStandardisation Vienna agreement* Results Information to market actors of solid biofuels

3 © Eija Alakangas, VTT 3 European (EN) pellet standards published  EN General requirements − Include all biomass raw materials − Flexible classification, each property selected separatetely − Include classification of raw material, which is needed for the product standards  Product standard EN Wood pellets for non-industrial use − Properties are bound together to class A1, A2 and B − ENplus certification system is based on this standard with some exceptions  Product standard EN Non-woody pellet for non-industrial use  EN and 6 standards are targeted for non-industrial use in small-scale appliances, such as, households, small commercial and public sector buildings.

4 © Eija Alakangas, VTT Solid biofuels standardisation progress during Technical specifications (27 published) National standards in force European standards EN (36 published) National standards withdrawn International standards (≈60 under preparation) European standards will be superseded by ISO standards other countries make their own national decisions 1 vote each country 2 years preparation time 3 years in force Prepared weighed votes 5 years in force Prepared weighed votes 3 years in force Prepared during CEN/TS EN ISO 4

5 © Eija Alakangas, VTT 5 International pellet standards (ISO) – 1  EN ISO General requirements (FDIS) − Include all biomass raw materials and also aquatic biomass − Flexible classification, each property selected separatetely − Include classification of raw material, which is needed for product standards − Includes also special property classes for thermally treated biomass pellets (e.g. torrefied pellets)  EN ISO Graded pellets (FDIS) − Table 1 for non-industrial use − Table 2 for industrial use

6 © Eija Alakangas, VTT International 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 pellets  EN ISO , 2 and 6 (FDIS stage) − Values has been agreed − standards have been sent for final approval in May (voting) − Standards will be published in beginning of year 2014 − ISO will supersede EN standards and will be published as EN ISO standards in Europe  Graded 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 standard − Voting 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. 6

7 © Eija Alakangas, VTT 7 Specification and classes (EN ISO )  Classification is based on origin and source, major traded forms and properties  Hierarchical classification system in table format: − 1 Woody biomass − 2 Herbaceous biomass − 3 Fruit biomass − 4 Aquatic biomass − 5 Biomass blends and mixtures blends = intentional (composition known) mixtures = unintentional  Chemical treatment defined as any treatment with chemicals other than air, heat or water (e.g. glued, painted, coated, lacqued or otherwise treated wood  Chemically 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.

8 © Eija Alakangas, VTT 8 Biomass Origin/Source Traded form (e.g. pellet) Solid biofuel utilisation chain Fuel production Solid biofuel Bioenergy use Conversion Documentation of origin (Table 1 in EN ISO Product declaration EN series (in Europe) Tables with property grades in EN ISO to 7 Fuel Quality Assurance EN series (in Europe)

9 © Eija Alakangas, VTT 9 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.

10 © Eija Alakangas, VTT Specification of industrial wood pellets (EN ISO (1) PropertyStandardA1A2B Origin and source EN ISO Stemwood Chemically untreated wood* Whole trees Stem wood Logging residues Chemically untreated wood* 1.1 Forest plantation and other virgin wood 1.2 By-products and residues Chemically untreated used wood Diameter and length (D and L, mm) ISO 17829D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 (1 % longer, <45mm) D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 (1 % longer, <45mm) D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 (1 % longer, <45mm) 10 * 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.

11 © Eija Alakangas, VTT Specification of residential wood pellets (ISO ) (2) 11 PropertyStandardA1A2B Moisture (M, w-%) ISO 18134M10 < 10 Ash (A), % dISO 18122A0.7 < 0,7A1.2 < 1,2A2.0 < 2,0 Bulk density (BD, kg/m 3 ) ISO 17828BD600 > 600 Fines (F, w-%)EN F1.0 < 1.0 Durability (DU, w- % ISO DU97.5 > 97.5 DU96.5 > 96.5 Net calorific value, Q (as received, MJ/kg, kWh/kg) ISO 18125Q16.5 > 16,5 Q4.6 > 4.6 Q16.5 > 16,5 Q4.6 > 4.6 Q16.5 > 16,5 Q4.6 > 4.6 Cl (w-% dry)ISO 16994Cl0.02 < 0,02 Cl0.03 < 0,03 N (w-% dry)ISO 16948N0.3 < 0,3N0.5 < 0,5N1.0 < 1,0 S (w-% dry)ISO 16994S0.04 < 0,04S0.05 < 0,05

12 © Eija Alakangas, VTT Specification of residential wood pellets (ISO ) (3) 12 PropertyStandardA1A2I3 As (mg/kg d)ISO 16968< 1< 1< 1< 1< 1< 1 Cd (mg/kg d)ISO 16968< 0.5 Cr (mg/kg d)ISO 16968< 10 Cu (mg/kg d)ISO 16968< 10< 10< 10< 10< 10< 10 Pb (mg/kg d)ISO 16968< 10 Hg (mg/kg d)ISO 16968< 0.1 Ni (mg/kg d)ISO 16968< 10 Zn (mg/kg d)ISO 16968< 100 Ash melting behaviour* CEN/TS Informative, should be stated * all temperatures SST, DT, HT and FT in oxidating conditions at 550 o C. Pre-ashing temperature other than 550 o C should be stated. ENplus certification has 815 o C.

13 © Eija Alakangas, VTT 13 Wood pellets for industrial use (EN ISO , Table 2)

14 © Eija Alakangas, VTT Specification of industrial wood pellets (ISO (1) PropertyStandardI1I2I3 Origin and source ISO Stemwood Chemically untreated wood* 1.1 Forest plantation and other virgin wood Chemically untreated wood* 1.1 Forest plantation and other virgin wood 1.2 By-products and residues Chemically untreated used wood Diameter and length (D and L, mm) ISO 17829D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 (1 % longer, <45mm) D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 (1 % longer, <45mm) D06, 6 ± 1; 3,15 < L < 40 D08, 8 ± 1; 3,15 < L <40 D10, 10 ± 1; 3,15 < L < 40 D12, 12 ± 1; 3,15 < L <40 (1 % longer, <45mm) 14 * 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.

15 © Eija Alakangas, VTT Specification of industrial wood pellets (ISO ) (2) 15 PropertyStandardI1I2I3 Moisture (M, w-%) ISO 18134M10 < 10 Ash (A), % dISO 18122A1.0 < 1,0A1.5 < 1,5A3.0 < 3,0 Bulk density (BD, kg/m 3 ) ISO 17828BD600 > 600 Max. 750 BD600 > 600 Max. 750 BD600 > 600 Max. 750 Fines (F, w-%)EN F4.0 < 4.0F5.0 < 5.0F6.0 < 6.0 Durability (DU, w-% ISO 16,5 Cl (w-% dry)ISO 16994Cl0.03 < 0,03Cl0.05 < 0,05Cl0.06 < 0,06 N (w-% dry)ISO 16948N0.3 < 0,3 N0.6 < 0,6 S (w-% dry)ISO 16994S0.05 < 0,05

16 © Eija Alakangas, VTT Specification of industrial wood pellets (ISO ) (3) 16 PropertyStandardI1I2I3 As (mg/kg d)ISO 16968< 2< 2< 2< 2< 2< 2 Cd (mg/kg d)ISO 16968< 1< 1< 1< 1< 1< 1 Cr (mg/kg d)ISO 16968< 15 Cu (mg/kg d)ISO 16968< 20< 20< 20< 20< 20< 20 Pb (mg/kg d)ISO 16968< 20 Hg (mg/kg d)ISO 16968< 0.1 Zn (mg/kg d)ISO 16968< 200 P (%)ISO 17830>99% (<3.15 mm) >95% (<2.0 mm) >60% (<0.1 mm) >99% (<3.15 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/TS Informative, should be stated * all temperatures SST, DT, HT and FT in oxidating conditions (550 o C).

17 © Eija Alakangas, VTT Additional information  CEN and ISO Fuel specification standards: Eija Alakangas, VTT, tel  Training material of wood pellets and non-woody pellets SolidStandards project (www.solidstandards.eu)  This presentation is supported by PellCert project: 17


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