ISO 18122:2022 固体バイオ燃料 — 灰分の測定 | ページ 2

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, 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, 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 ).

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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).

This second edition cancels and replaces the first edition (ISO 18122:2015), which has been technically revised.

The main changes are as follows:

• more detailed descriptions of the ashing furnace and ashing procedure;
• repeatability and reproducibility performance data updated;
• several references updated;
• minor editorial corrections.

Introduction

Ash content is an important parameter for fuel deliveries since ash is a by-product of combustion and ends up as bottom ash or fly-ash and needs to be removed. Depending on the jurisdiction, ash may be deposited or used for production of other products or as fertilizer. Knowing how much ash comes with a fuel can have economic consequences. Since the chemical composition of ash contributes to slagging and corrosion in the combustion equipment, it is therefore important to know the amount of ash contained in a fuel. Other testing standards are used for determining the chemical composition of ash.

1 ​Scope

This document specifies a method for the determination of ash content of all solid biofuels.

2 ​Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 ​Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 16559 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography