【摘要】 目的:研究农业废弃物类生物质原料特性对热裂解行为的影响,探讨热裂解机理。方法:利用热重-红外联用技术(TG-FTIR)对四种农业废弃秸秆生物质及其混合配比秸秆进行热裂解实验。结果:热重实验结果表明,油菜秆、玉米秆、毛豆秆分别与棉秆混合后最大失重速率降低,油菜秆的加入使焦炭产率增加.红外光谱表明,半纤维素、木质素含量的升高均抑制了左旋葡聚糖的生成;纤维素对2-糖醛、酚类物质生成有较好的选择性,木质素和半纤维素分别对2-糖醛和酚类物质的生成有抑制作用。结论:农业废弃生物质热解行为及典型热解产物析出受原料特性和组分含量变化的共同影响,对生物质快速热裂解从源头的原料筛选以及特定产物的调控提供了实际理论指导。更多还原

【Abstract】 Aims: This paper aims to study the effect of the material characteristics of agricultural waste biomass on pyrolysis behavior and discuss the pyrolysis mechanism. Methods: Pyrolysis experiments of four kinds of agricultural waste straw biomass and two-straw mixing straw were carried out by thermogravimetric-infrared combination technology(TG-FTIR). Results: The results of thermogravimetric analysis showed that the maximum weight loss rate of mixed straw decreased when rape stalk, corn stalk and soybean stalk were mixed with cotton stalk respectively, and the char yield increased with the addition of rape stalk. Infrared spectroscopy showed that the increase of hemicellulose and lignin content inhibited the formation of levoglucose. Cellulose had better selectivity for the formation of 2-furfural and phenols products. Lignin and hemicellulose inhibited the formation of 2-furfural and phenols products, respectively. Conclusions: The pyrolysis behavior of agricultural waste biomass and the precipitation of typical pyrolysis products were affected by material characteristics and the change of component content. It has practical guiding significance for the selection of materials from source and the regulation of specific products by rapid pyrolysis of biomass.更多还原