Design and Characterization of an Entrained Flow Reactor for the Study of Biomass Pyrolysis Chemistry at High Heating Rates
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- 作者：Alexander L. Brown ; David C. Dayton ; Mark R. Nimlos ; and John W. Daily
- 刊名：Energy & Fuels
- 出版年：2001
- 出版时间：September 2001
- 年：2001
- 卷：15
- 期：5
- 页码：1276 - 1285
- 全文大小：194K
- 年卷期：v.15,no.5(September 2001)
- ISSN：1520-5029
文摘
A laminar entrained flow reactor has been designed for studying the chemistry of fast biomasspyrolysis. This is the first of two papers on the reaction system. Peak heating rates in the reactorare on the order of 104 K/s. The reactor is capable of interfacing with a molecular beam massspectrometer for rapid analysis of gas phase chemistry. Computational fluid dynamic simulationsare used to predict an accurate time-temperature profile for the reactants and to betterunderstand the internal processes in the reactor. Predicted and measured reaction rates comparefavorably for a gas phase reaction standard. Particle devolatilization is modeled to help understandthe tradeoff between heat transport and kinetic control of the pyrolysis rate. Biomass and celluloseparticles below about 50 
m are expected to be sufficiently small to avoid heat transport pyrolysiscontrol, and thus allow study of kinetically controlled pyrolysis in this reactor. This paper is thefirst of two, and describes the characterization of the entrained flow reactor and methodologiesdeveloped for determining quantitative kinetic measurements. The second paper describes theapplication of these techniques to the study of cellulose pyrolysis at high heating rates.
m are expected to be sufficiently small to avoid heat transport pyrolysiscontrol, and thus allow study of kinetically controlled pyrolysis in this reactor. This paper is thefirst of two, and describes the characterization of the entrained flow reactor and methodologiesdeveloped for determining quantitative kinetic measurements. The second paper describes theapplication of these techniques to the study of cellulose pyrolysis at high heating rates.