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生物质是可再生资源。在所有生物质资源中,植物资源的量最大,特别是林产植物资源最丰富。据统计,1980年世界森林面积为3亿公顷。木材蓄积量为3270亿立方米。用生物质代替能源,主要采用气化和液化两种工艺路线。目前,实际使用的代表性例子是巴西的酒精发酵和中国的甲烷(沼气)发酵。这两个国家应用得都很普遍,并且取得了一定的成果。但木质生物质除直接用作燃料外,实际代替能源的还不多。木材的液化燃料化研究,主要目标是酒精发酵,但预处理
Biomass is a renewable resource. Of all biomass resources, the largest amount of plant resources, in particular, the most abundant forest plant resources. According to statistics, the world’s forest area in 1980 was 300 million hectares. Timber stock volume is 327 billion cubic meters. Use of biomass instead of energy, the main gasification and liquefaction of the two routes. Currently, representative examples of practical use are alcohol fermentation in Brazil and methane (biogas) fermentation in China. Both countries are commonly used and have achieved some results. However, in addition to direct use of woody biomass as a fuel, the actual replacement of energy is not much. The study of liquefaction of wood fuel, the main goal is alcoholic fermentation, but the pretreatment