CEN ISO/TS 21596:2021
(Main)Solid biofuels - Determination of grindability - Hardgrove type method for thermally treated biomass fuels (ISO/TS 21596:2021)
Solid biofuels - Determination of grindability - Hardgrove type method for thermally treated biomass fuels (ISO/TS 21596:2021)
This document describes a method for determination of grindability of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8, for the purpose of preparing fuels with a defined particle size distribution for effective combustion in pulverized fuel boilers. The grindability characteristics determined by the test method provide guidance as to the pulverizing mill performance when utilizing such fuels.
Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1:2021, Table 14 and Table 15.
The results created with this method are not relevant for large wood chips, since limitations apply for large pulverizing coal mills, which are typically not used for grinding materials such as chips.
Biogene Festbrennstoffe - Bestimmung der Mahlbarkeit - Hardgrove-Verfahren für thermisch behandelte Brennstoffe aus Biomasse (ISO/TS 21596:2021)
Dieses Dokument beschreibt ein Verfahren zur Bestimmung der Mahlbarkeit von klassifizierten thermisch behandelten und gepressten Brennstoffen aus Biomasse, wie sie in ISO/TS 17225 8 klassifiziert werden, zur Herstellung von Brennstoffen mit einer festgelegten Partikelgrößenverteilung für eine wirksame Verbrennung in Heizkesseln für pulverisierte Brennstoffe. Die mit dem Prüfverfahren bestimmten Mahlbarkeitseigenschaften geben Hinweise auf das Leistungsverhalten der Pulverisiermühle bei der Verwendung derartiger Brennstoffe.
Neben pelletierten Materialien, wie in ISO/TS 17225 8 beschrieben, kann das Verfahren auch auf nicht gepresste thermisch behandelte Biomasse, wie in ISO 17225 1:2021, Tabelle 14 und Tabelle 15 festgelegt, angewendet werden.
Die mit diesem Verfahren erzielten Ergebnisse sind für große Holzhackschnitzel nicht relevant, da für große Kohlenstaubmühlen, die typischerweise nicht zur Zerkleinerung von Materialien wie z. B. Hackschnitzeln verwendet werden, Einschränkungen gelten.
Biocombustibles solides - Détermination de la broyabilité - Méthode de type Hardgrove pour les combustibles de biomasses traitées thermiquement (ISO/TS 21596:2021)
Le présent document décrit une méthode de détermination de la broyabilité des combustibles de biomasse traitée thermiquement et densifiée selon le classement donné dans l'ISO/TS 17225-8, dans le but de préparer des combustibles avec une distribution granulométrique définie pour une combustion efficace dans les chaudières à combustible pulvérisé. Les caractéristiques de broyabilité déterminées par la méthode d'essai fournissent des recommandations quant aux performances du broyeur-pulvérisateur lors de l'utilisation de tels combustibles.
Outre les matériaux sous forme de granulés décrits dans l'ISO/TS 17225-8, la méthode peut également être appliquée à de la biomasse traitée thermiquement non comprimée ou non densifiée décrite dans l'ISO 17225-1:2021, Tableaux 14 et 15.
Les résultats obtenus par cette méthode ne sont pas pertinents pour les gros copeaux de bois, car des limites s'appliquent aux grands broyeurs-pulvérisateurs à charbon, qui ne sont généralement pas utilisés pour le broyage de matériaux tels que les copeaux.
Trdna biogoriva - Določanje stopnje mletja - Metoda trdega grozda za toplotno obdelana goriva iz biomase (ISO/TS 21596:2021)
Ta dokument opisuje metodo za določanje stopnje mletja toplotno obdelanega in zgoščena goriva iz biomase, kot je razvrščeno v standardu ISO/TS 17225-8, za namene priprave goriv z opredeljeno porazdelitvijo velikosti delcev za učinkovito zgorevanje v kotlih na premogov prah.
Karakteristike stopnje mletja, določene s preskusno metodo, zagotavljajo smernice glede učinkovitosti delovanja stroja za drobljenje z uporabo takšnih goriv.
Poleg materialov v peletih, kot so opisani v standardu ISO/TS 17225-8, je mogoče metodo uporabiti tudi za nestisnjeno oz. nezgoščeno toplotno obdelano biomaso, kot je določeno v preglednicah 14 in 15 standarda ISO 17225-1.
Rezultati, ustvarjeni s to metodo, niso relevantni za velike lesne sekance, ker veljajo omejitve za velike mline za drobljenje premoga, ki se običajno ne uporabljajo za mletje materialov, kot so sekanci.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2022
Trdna biogoriva - Določanje stopnje mletja - Metoda trdega grozda za toplotno
obdelana goriva iz biomase (ISO/TS 21596:2021)
Solid biofuels - Determination of grindability - Hardgrove type method for thermally
treated biomass fuels (ISO/TS 21596:2021)
Biogene Festbrennstoffe - Bestimmung der Mahlbarkeit - Hardgrove-Verfahren für
thermisch behandelte Brennstoffe aus Biomasse (ISO/PRF TS 21596:2021)
Biocombustibles solides - Détermination de la broyabilité - Méthode de type Hardgrove
pour les combustibles de biomasses traitées thermiquement (ISO/TS 21596:2021)
Ta slovenski standard je istoveten z: CEN ISO/TS 21596:2021
ICS:
75.160.40 Biogoriva Biofuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN ISO/TS 21596
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
November 2021
TECHNISCHE SPEZIFIKATION
ICS 75.160.40
English Version
Solid biofuels - Determination of grindability - Hardgrove
type method for thermally treated biomass fuels (ISO/TS
21596:2021)
Biocombustibles solides - Détermination de la Biogene Festbrennstoffe - Bestimmung der
broyabilité - Méthode de type Hardgrove pour les Mahlbarkeit - Hardgrove-Verfahren für thermisch
combustibles de biomasses traitées thermiquement behandelte Brennstoffe aus Biomasse (ISO/TS
(ISO/TS 21596:2021) 21596:2021)
This Technical Specification (CEN/TS) was approved by CEN on 28 September 2021 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 21596:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (CEN ISO/TS 21596:2021) 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/TS 21596:2021 has been approved by CEN as CEN ISO/TS 21596:2021 without any
modification.
TECHNICAL ISO/TS
SPECIFICATION 21596
First edition
2021-10
Solid biofuels — Determination of
grindability — Hardgrove type method
for thermally treated biomass fuels
Biocombustibles solides — Détermination de la broyabilité —
Méthode de type Hardgrove pour les combustibles de biomasses
traitées thermiquement
Reference number
ISO/TS 21596:2021(E)
ISO/TS 21596:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
ISO/TS 21596:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
5.1 Standard HGI mill . 2
5.2 Sieves . 2
5.3 Glass measuring cylinder . 2
5.4 Sieving machine . 3
5.5 Balance . 3
5.6 Cutting mill . 3
6 Sampling and sample preparation . 3
6.1 General . 3
6.2 Moisture conditions . 3
6.3 Pre-grinding and sieving . 3
6.4 Sample size . 3
7 Procedure .3
8 Calculation . 4
9 Reproducibility . 5
10 Test report . 5
Annex A (normative) Calibration curve and thermally treated biomass grindability index
(TTBGI) values for the reference materials. 6
Bibliography . 9
iii
ISO/TS 21596:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. 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 identifying any or all such patent rights. Details of
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on the ISO list of patent declarations received (see www.iso.org/patents).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 238, Solid biofuels, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 335, Solid biofuels, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/TS 21596:2021(E)
Introduction
Grindability characteristics are of fundamental importance during solid biofuel preparation for energy
conversion processes, requiring a predictable particle size distribution. Particles that are too large or
too wide in their distribution may result in feeding problems as well as un-burnt fuel passing through
the conversion process. Also, in case of processing of biomass for pre-treatment, consistency in particle
size determines the yield of such pre-treatment as well as the quality of the final solid biofuel.
The effectiveness of combustion in a pulverized fuel furnace depends strongly on the reactivity and
particle size distribution of the pulverized fuel among other factors. For coal, the Hardgrove Grindability
Index (HGI) test was developed to characterize the relative grindability of a
...
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