Release of fuel-bound nitrogen in biomass during high temperature pyrolysis and gasification

IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Pub Date : 1997-12-31 DOI:10.1109/IECEC.1997.656693

Jiachun Zhou, S. Masutani, D. Ishimura, S. Turn, C. Kinoshita

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引用次数: 16

Abstract

Pyrolysis and gasification of two biomass feedstocks with significantly different fuel-bound nitrogen (FBN) content were investigated to determine the effect of operating conditions on the partitioning of FBN among gas species. Experiments were performed in a bench-scale, indirectly-heated, fluidized bed reactor. Data were obtained over a range of temperatures and equivalence ratios representative of commercial biomass gasification processes. An assay of all major nitrogenous components of the gasification products was performed for the first time, providing a clear accounting of the evolution of FBN. Results indicate that: (1) NH/sub 3/ is the dominant nitrogenous gas species produced during pyrolysis of biomass; (2) the majority of FBN is converted to NH/sub 3/ or N/sub 2/ during gasification; relative levels of NH/sub 3/ and N/sub 2/ are determined by thermochemical reactions which are affected strongly by temperature; and (3) N/sub 2/ appears to be produced from NH/sub 3/ in the gas phase.

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生物质高温热解和气化过程中燃料结合氮的释放

研究了两种燃料结合氮(FBN)含量显著不同的生物质原料的热解和气化过程，以确定操作条件对FBN在气体中分配的影响。实验在一个间接加热的流化床反应器中进行。数据是在代表商业生物质气化过程的温度和等效比范围内获得的。首次对气化产物的所有主要含氮成分进行了分析，为FBN的演变提供了清晰的说明。结果表明:(1)NH/sub 3/是生物质热解过程中产生的主要含氮气体;(2)大部分FBN在气化过程中转化为NH/ sub3 /或N/ sub2 /;NH/sub - 3/和N/sub - 2/的相对水平由受温度强烈影响的热化学反应决定;(3) N/sub 2/似乎是由气相的NH/sub 3/产生的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203)

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