本文件确定了商业和工业用热处理生物质生产的分级致密固体生物燃料的燃料质量等级和规格。热处理包括烘烤、蒸汽爆炸、水热碳化和炭化等过程，所有这些过程都代表了不同的热、氧、蒸汽或水暴露。本文件涵盖了由以下原材料生产的颗粒和型煤（见ISO 17225-1，表1）: — 1. 木本生物量； — 2. 草本生物量； — 3. 水果生物量； — 4. 水生生物量； — 5. 混合物和混合物。 上述原材料的子类别也包括在内。 本文件不考虑以木炭或木炭产品销售的产品。对于这些产品，ISO 17225-1表14应适用。

This document determines the fuel quality classes and specifications of graded densified solid biofuels produced from thermally treated biomass for commercial applications and industrial use. This document covers pellets and briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1): —    woody biomass; —    herbaceous biomass; —    fruit biomass; —    aquatic biomass; —    blends and mixtures. Subcategories of these raw materials are included. This document does not consider products which are marketed as charcoal or as charcoal products. For these products, see ISO 17225‑1:2021, Table 14. NOTE      Health, safety and environmental issues for solid biofuels are important and need special attention; however, they are outside the scope of this document.