Moisture Management for Lignocellulosic Biomass

在加拿大，森林和农业残余物形式的大量木质纤维素生物质是可再生资源，可利用各种技术转化为生物燃料。近年来，加拿大一直是木质颗粒形式的致密生物质的主要出口国，预计这一趋势将继续下去。收获后立即使用这些残留物往往是不可行的，因为它们的水分含量很高，影响到热值、储存特性、运输成本和燃料的定价。无论生物质打算以致密化或非致密化形式使用，干燥都是必要的。此外，储存含水量较高的生物质可能会产生安全和健康问题。拟议研究项目的总体目标是调查生物干燥作为替代干燥技术的技术可行性，与传统方法相比，预计将减少能源消耗。另一个主要目标是确定储存木屑颗粒的最佳条件和通风策略。长期目标是研究能够提高生物质回收行业可持续性的技术。

In Canada, large amounts of lignocellulosic biomass in the form of forest and agricultural residues constitute renewable resources for conversion into biofuels using a variety of technologies. Canada has been a major exporter of densified biomass in the form of wood pellets in recent years, and this trend is expected to continue. The immediate use of these residues after harvest is often unfeasible due to their high moisture content which affects the calorific value, storage properties, transport costs and the pricing of the fuel. Drying is necessary whether the biomass is intended to be used in densified or non-densified form. Moreover, storage of biomass with higher moisture content could have safety and health concerns. The overarching goal of the proposed research project is to investigate the technical feasibility of biodrying as an alternative drying technique, which is expected to reduce energy consumption compared to conventional methods. Another major objective is to determine the optimal conditions and ventilation strategy for stored wood pellets. The long-term objective is to investigate technologies that can enhance the sustainability of the biomass recycling industry.