Journal
APPLICATIONS IN ENERGY AND COMBUSTION SCIENCE
Volume 9, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jaecs.2022.100057
Keywords
Flash pyrolysis; On-line analysis; Biomass; PI-MS; Kinetic study
Funding
- Jiangsu Province Biomass Energy and Materials Laboratory in the Institute of Chemical Industry of Forest Product [JSBEM202015]
- Natural Science Foundation of China [51806055]
- Opening Fund of State Key Laboratory of Fire Science [HZ2021-KF04]
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This study successfully investigates the kinetic process of flash pyrolysis of cellulose using a combination of a microfluidized-bed reactor and a single photoionization time-of-flight mass spectrometer. The results demonstrate the potential and reliability of this method for studying the flash pyrolysis of solid fuels.
Experimental and kinetic study on flash pyrolysis of solid fuels is a challenge since its process usually occurs in a very few seconds. To do this successfully, a perfect combination of high heating rates, plug flow reactor, on-line sampling, real-time analysis and fast acquisition (e.g., < 300 ms/spectrum) is indispensable. In this work, a microfluidized-bed reactor (MFBR) was connected to the single photoionization time-of-flight mass spectrometer (SPI-TOFMS) to explore the kinetic process from flash pyrolysis of cellulose. The hydrodynamics of MFBR at different pyrolysis temperatures and with three model compounds were analyzed. The time-evolved profiles of primary tar from flash pyrolysis were recorded by SPI-TOFMS. The effect of experimental conditions (including pyrolysis temperature, transfer-line temperature and the type of carrier gas) on the kinetics of flash pyrolysis was systematically discussed. Besides, experimental measurements were also compared with kinetic modeling results, which shows a much better agreement between them than previous work. The obtained results prove that the MFBR combined with SPI-TOFMS is a potential and reliable method to experimentally study the flash pyrolysis of solid fuels.
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