EN ISO 17225-7:2021

Solid biofuels - Fuel specifications and classes - Part 7: Graded non-woody briquettes (ISO 17225-7:2021)

This document determines the fuel quality classes and specifications of graded non-woody briquettes. This document covers only non-woody briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1):
—    2 Herbaceous biomass
—    3 Fruit biomass
—    4 Aquatic biomass
—    5 Biomass blends and mixtures
NOTE 1    Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals.
NOTE 2    Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass.
Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225‑1:2021, Table 1.
If solid biofuel blend or mixture contains chemically treated material it shall be stated.
NOTE 3              Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document

Biogene Festbrennstoffe - Brennstoffspezifikationen und -klassen - Teil 7: Klassifizierung von nicht-holzartigen Briketts (ISO 17225-7:2021)

Dieses Dokument legt die qualitätsbezogenen Brennstoffklassen und  spezifikationen für klassifizierte nicht holzartige Briketts fest. Dieses Dokument umfasst nur nicht-holzartige Briketts, die aus folgenden Rohmaterialien hergestellt wurden (siehe ISO 17225 1:2021, Tabelle 1):
- 2 Halmgutartige Biomasse;
- 3 Biomasse von Früchten;
- 4 Aquatische Biomasse;
- 5 Definierte und undefinierte Mischungen von Biomasse.
ANMERKUNG 1 Halmgutartige Biomasse stammt von Pflanzen mit einem nicht verholztem Stängel, die am Ende der Wachstumssaison absterben. Dazu gehören Getreide  oder Saatgutpflanzen aus der Lebensmittel herstellenden oder verarbeitenden Industrie und deren Nebenprodukte, wie z. B. Getreide.
ANMERKUNG 2 Definierte und undefinierte Mischungen umfassen definierte und undefinierte Mischungen aus den auf der Herkunft beruhenden Hauptgruppen biogener Festbrennstoffe: holzartige Biomasse, halmgutartige Biomasse, Biomasse von Früchten und aquatische Biomasse.
Definierte Mischungen sind absichtlich gemischte biogene Brennstoffe, während undefinierte Mischungen zufällig gemischte biogene Brennstoffe sind. Die Herkunft der definierten und undefinierten Mischungen ist unter Anwendung von ISO 17225 1:2021, Tabelle 1, zu beschreiben.
Wenn eine definierte oder undefinierte Mischung von biogenen Festbrennstoffen chemisch behandeltes Material enthält, muss dies angegeben werden.
ANMERKUNG 3 Thermisch behandelte Biomassebriketts (z. B. torrefizierte Briketts) fallen nicht in den Anwendungs¬bereich dieses Dokuments.

Biocombustibles solides - Classes et spécifications des combustibles - Partie 7: Classes de briquettes d'origine agricole (ISO 17225-7:2021)

Le présent document détermine les classes et spécifications de qualité du combustible pour les briquettes d'origine agricole. Le présent document couvre uniquement les briquettes d'origine agricole produites à partir des matières premières suivantes (voir ISO 17225-1:2021, Tableau 1):
—    2 Biomasse herbacée;
—    3 Biomasse fruitière;
—    4 Biomasse aquatique;
—    5 Assortiments et mélanges de biomasses.
NOTE 1        La biomasse herbacée provient de plantes à tiges non ligneuses et qui se fanent à la fin de la saison de croissance. Cela comprend la culture de graines ou de semences issues de l'industrie de production ou de transformation alimentaire et leurs co-produits tels que les céréales.
NOTE 2        Le groupe Assortiments et mélanges comprend les assortiments et mélanges issus des principaux groupes de biocombustibles solides provenant des biomasses ligneuse, herbacée, fruitière et aquatique.
Les assortiments résultent du mélange intentionnel de différents biocombustibles, tandis que les mélanges résultent d'une association non intentionnelle de différents biocombustibles. L'origine de l'assortiment et du mélange doit être décrite à l'aide du Tableau 1 de l'ISO 17225-1:2021.
Si l'assortiment ou le mélange de biocombustibles solides contient des matériaux traités chimiquement, cela doit être mentionné.
NOTE 3        Les briquettes de biomasse traitée thermiquement (par exemple, briquettes torréfiées) ne sont pas comprises dans le domaine d'application du présent document.

Trdna biogoriva - Specifikacije goriv in razredi - 7. del: Razvrščeni nelesni briketi (ISO 17225-7:2021)

General Information

• Status: Published
• Publication Date: 20-Jul-2021
• Withdrawal Date: 30-Jan-2022
• ICS: 27.190 - Biological sources and alternative sources of energy
• ICS: 75.160.40 - Biofuels
• Technical Committee: CEN/TC 335 - Solid biofuels
• Drafting Committee: CEN/TC 335/WG 2 - Fuel specifications, classes and quality assurance
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Jul-2021
• Completion Date: 21-Jul-2021
• Directive: 2000/76/EC - Directive 2000/76/EC of the European Parliament and of the Council of 4 December 2000 on the incineration of waste
• Mandate: M/298 - Mandate to CEN for standardisation in the field of solid biofuels
• Ref Project: SIST EN ISO 17225-7:2021 - Solid biofuels - Fuel specifications and classes - Part 7: Graded non-woody briquettes (ISO 17225-7:2021)

Relations

• Replaces: EN ISO 17225-7:2014 - Solid biofuels - Fuel specifications and classes - Part 7: Graded non-woody briquettes (ISO 17225-7:2014)
• Effective Date: 20-Jun-2018

Overview - EN ISO 17225-7:2021 (Graded non-woody briquettes)

EN ISO 17225-7:2021 is the CEN-adopted part of the ISO 17225 series that specifies fuel quality classes and specifications for graded non-woody briquettes. It covers briquettes produced from non-woody feedstocks: herbaceous biomass, fruit biomass, aquatic biomass, and biomass blends and mixtures. Thermally treated briquettes (e.g., torrefied) are excluded. The document updates and replaces the 2014 edition and aligns requirements with the general rules in ISO 17225‑1:2021.

Key topics and technical requirements

• Fuel quality classes: Defines classification principles and designated property classes for non-woody briquettes to enable clear trading and appliance compatibility.
• Covered materials: Herbaceous, fruit and aquatic biomass, and blends/mixtures (intentionally mixed = blends; unintentionally mixed = mixtures). Chemically treated materials in blends must be declared.
• Measured properties (specified by reference methods): moisture content, net calorific value, ash content, particle density, elemental analysis (C, H, N, S, Cl) and minor elements. Ash melting behaviour is included as an informative property.
• Dimensions and form: Geometric requirements and particle density for briquette types are described (diameter, length).
• Sampling and testing: References to established test standards for sampling, sample preparation and analysis (e.g., ISO 18135, ISO 14780, ISO 18125, ISO 18134 series, ISO 16948/16994/16968).
• Safety and performance considerations: Notes on high ash, chlorine, potassium and silica content typical for non-woody biomass and associated risks (fouling, slagging, corrosion).

Practical applications - who uses this standard

• Biofuel manufacturers and briquette producers - to classify product quality and meet market/product declarations.
• Suppliers, traders and purchasers - to specify and verify fuel quality for contracts.
• Heating appliance and boiler manufacturers - to design equipment compatible with non-woody briquettes and advise users on fuel restrictions.
• Testing laboratories and certification bodies - for compliant sampling and laboratory analysis.
• Regulators and facility managers - to set procurement rules for residential, small commercial, public building and industrial installations where graded non-woody briquettes are used.

Practical guidance in the standard stresses that non-woody briquettes often require specially designed appliances or blending with woody biomass to avoid operational problems and higher emissions.

Related standards

• ISO 17225‑1:2021 (General requirements and origin classification)
• ISO 18135, ISO 18125, ISO 18134 (sampling, calorific value, moisture)
• ISO 16948, ISO 16968, ISO 16994 (elemental and minor element analyses)
• ISO 18847, ISO 14780 (density, sample preparation)

Keywords: EN ISO 17225-7:2021, solid biofuels, non-woody briquettes, fuel specifications, biofuel briquette, biomass blends, fuel quality classes.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2021
Nadomešča:
SIST EN ISO 17225-7:2014
Trdna biogoriva - Specifikacije goriv in razredi - 7. del: Razvrščeni nelesni briketi
(ISO 17225-7:2021)
Solid biofuels - Fuel specifications and classes - Part 7: Graded non-woody briquettes
(ISO 17225-7:2021)
Biogene Festbrennstoffe - Brennstoffspezifikationen und -klassen - Teil 7: Klassifizierung
von nicht-holzartigen Briketts (ISO 17225-7:2021)
Biocombustibles solides - Classes et spécifications des combustibles - Partie 7: Classes
de briquettes d'origine agricole (ISO 17225-7:2021)
Ta slovenski standard je istoveten z: EN ISO 17225-7:2021
ICS:
75.160.40 Biogoriva Biofuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 17225-7
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 27.190; 75.160.40 Supersedes EN ISO 17225-7:2014
English Version
Solid biofuels - Fuel specifications and classes - Part 7:
Graded non-woody briquettes (ISO 17225-7:2021)
Biocombustibles solides - Classes et spécifications des Biogene Festbrennstoffe - Brennstoffspezifikationen
combustibles - Partie 7: Classes de briquettes d'origine und -klassen - Teil 7: Klassifizierung von nicht-
agricole (ISO 17225-7:2021) holzartigen Briketts (ISO 17225-7:2021)
This European Standard was approved by CEN on 13 June 2021.

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 such 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 own 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, 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. EN ISO 17225-7:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17225-7:2021) 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.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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.
This document supersedes EN ISO 17225-7:2014.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
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 websites.
According to the CEN-CENELEC 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, 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 17225-7:2021 has been approved by CEN as EN ISO 17225-7:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 17225-7
Second edition
2021-07
Solid biofuels — Fuel specifications
and classes —
Part 7:
Graded non-woody briquettes
Biocombustibles solides — Classes et spécifications des
combustibles —
Partie 7: Classes de briquettes d'origine agricole
Reference number
ISO 17225-7:2021(E)
©
ISO 2021
ISO 17225-7:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 17225-7:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
5 Specification of graded non-woody briquettes . 3
Bibliography . 7
ISO 17225-7:2021(E)
Foreword
ISO (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 subject 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 (IEC) 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 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
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 of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 238, Solid biofuels.
This second edition cancels and replaces the first edition (ISO 17225-7:2014), which has been technically
revised. The main changes compared to the previous edition are as follows:
— Figure 1 changed;
— Class A is split into two classes, A1 and A2;
— Chlorine value changed in Class A2;
— Arsenic value changed in Class B;
— Ash melting behaviour added as an informative property.
A list of all parts in the ISO 17225 series can be found on the ISO website.
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 2021 – All rights reserved

ISO 17225-7:2021(E)
Introduction
The objective of the ISO 17225 series is to provide unambiguous and clear classification principles for
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 will
also facilitate authority permission procedures and reporting.
This document supports the use of graded non-woody briquettes in specially designed appliances for
residential, small commercial and public building applications and industrial use.
The residential, small commercial and public building appliances require higher quality fuel for the
following reasons:
— Small-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.
Non-woody briquettes have high ash, chlorine (Cl), nitrogen (N), sulfur (S) and major element contents,
so non-woody briquettes are recommended to be used in appliances, which are specially designed or
adjusted for this kind of briquettes.
In general, non-woody biomass materials have higher content of ash forming elements and produces
ashes with lower melting temperature compared to most woody biomass. Be aware that different
growing and soil conditions of the herbaceous or fruit biomass may influence the fuel ash composition
differently depending on growth and soil conditions This may result in fouling, slagging and corrosion
inside boilers. These problems are especially related to materials that have high content of potassium
(K) and silicate (Si) and low content of calcium (Ca). The content of chlorine (Cl), phosphorous (P) and
potassium (K) in the material may form chlorides and phosphates and other chemical compounds
resulting in high hydrochloric emissions and chemically active ash causing corrosion. Special attention
should be paid to the risk of corrosion in small and medium scale boilers and flue gas systems. Blending
with woody biomass can improve the combustion characteristics.
NOTE 1 Briquettes produced according to this document can be used in stoves, fireplaces, cookers,
,[1]
roomheaters and multifired sauna stoves, which are tested according to European standards EN 13229
[2] [3] [4] [5] [6]
EN 12815, EN 12809, EN 13240, EN 15250 and
...