生物质热解过程气体产物释放特性的研究

Study on Release Characteristics of Gaseous Products During Biomass Pyrolysis Process

生物质热解是一种重要的热转化技术,同时也是生物质气化、燃烧与液化等热转化过程的初始阶段,因此生物质热解的研究具有很好的理论意义与应用前景。基于这样的背景,选用固定床反应器,以白松、花生壳和稻秸为生物质样品,对其慢速热解的各相产物、产率进行比较,然后对不同生物质的热解气体产物进行分析,最后深入考察碱金属催化剂(K2CO3)对于不同生物质催化裂解过程所产生的影响。结果表明,在相同慢速热解条件下,稻秸的制氢效果最为明显。在加入碱金属催化剂后,发现相较于白松和稻秸,K2CO3对于花生壳的催化制氢效果尤为显著。

Biomass pyrolysis, as an important technology of energy transforming, is the primary process of gasification, combustion and liquefaction. Thus, researches based on biomass pyrolysis are of great theoretical and practical meaning. The main purpose of this study is to investigate and compare the product yields, pyrolysis gases and influences of alkali metal catalysts（K2CO3） on the slow pyrolysis behaviors of pine wood, peanut shell and straw in a fixed-bed reactor. The research indicates in the same reaction condition straw is more efficient on hydrogen production. Peanut shell produces more hydrogen in company of K2CO3