Purpose of the Review

This review offers essential information on the factors affecting the efficiency of wood chip supply chains, and of comminution in particular. The paper indicates the pros and cons of alternative set ups, as well as the impact of specific technical choices, including machine setup and adjustments.

Recent Findings

Chipping performance is closely related to chipper characteristics and setup, and to feedstock type. In general, productivity is directly proportional to chipper power and piece size, as far as the latter is within the capacity of the machine in question. Blade wear, cut length, and screen size also have a strong impact on productivity and work quality—and so do operator experience, skill, and motivation. Daily production is affected by work organization and machine reliability: delay time may represent between 25 and 50% of actual work site time—occasionally more, especially when the interface with the transport fleet is not properly managed.

Summary

Wood biomass supply chains are characterized by comminution as their central process, since all automatic wood boilers require comminuted wood. Different supply chains are defined by what kind of feedstock is comminuted and where comminution takes place. In principle, one can comminute whole trees, logs, or logging residues—and comminution can occur on the cutover, at the landing or in a yard—be it a terminal or the factory wood yard. Comminution can be obtained by chipping, grinding, crushing, or shredding. Chipping is by far the most common method and is applied in different ways depending on work conditions.

中文翻译：

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木片粉碎技术与物流运作的批判性考察

审查目的

这篇综述提供了有关影响木屑供应链效率的因素的重要信息，尤其是粉碎的效率。本文指出了替代设置的利弊，以及特定技术选择（包括机器设置和调整）的影响。

最近的发现

切片性能与切片机的特性和设置以及原料类型密切相关。通常，生产率只要与削片机的功率和工件大小成正比，只要后者在相关机器的能力范围内即可。刀片的磨损，切割长度和筛网尺寸也会对生产率和工作质量产生重大影响，操作员的经验，技能和动力也会受到影响。日常生产受工作组织和机器可靠性的影响：延迟时间可能占实际工地时间的25％至50％，有时甚至更多，尤其是在与运输车队的接口管理不当的情况下。

概要

木材生物质供应链的主要特征是粉碎，因为所有自动木材锅炉都需要粉碎木材。不同的供应链由哪种原料被粉碎以及在哪里进行粉碎来定义。原则上，可以粉碎整棵树，原木或伐木残渣，而粉碎可能发生在割接处，平台或院子（无论是码头还是工厂的木厂）中。可以通过切碎，研磨，粉碎或切碎获得粉碎。削片是迄今为止最常用的方法，并根据工作条件以不同的方式施加。