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Simulation and model validation of Biomass Fast Pyrolysis in a fluidized bed reactor using CFD

전산유체역학(CFD)을 이용한 유동층반응기 내부의 목질계 바이오매스 급속 열분해 모델 비교 및 검증

Ju, Young Min;Euh, Seung Hee;Oh, Kwang cheol;Lee, Kang Yol;Lee, Beom Goo;Kim, Dae Hyun
주영민;어승희;오광철;이강열;이범구;김대현

  • Received : 2015.07.15
  • Accepted : 2015.12.07
  • Published : 2015.12.31

Abstract

The modeling for fast pyrolysis of biomass in fluidized bed reactor has been developed for accurate prediction of bio-oil and gas products and for yield improvement. The purpose of this study is to analyze and to compare the CFD(Computational Fluid Dynamics) simulation results with the experimental data from the CFD simulation results with the experimental data from the reference(Mellin et al., 2014) for gas products generated during fast pyrolysis of biomass in fluidized bed reactor. CFD(ANSYS FLUENT v.15.0) was used for the simulation. Complex pyrolysis reaction scheme of biomass subcomponents was applied for the simulation of pyrolysis reaction. This pyrolysis reaction scheme was included reaction of cellulose, hemicellulose, lignin in detail, gas products obtained from pyrolysis were mainly $CO_2$, CO, $CH_4$, $H_2$, $C_2H_4$. The deviation between the simulation results from this study and experimental data from the reference was calculated about 3.7%p, 4.6%p, 3.9%p for $CH_4$, $H_2$, $C_2H_4$ respectively, whereas 9.6%p and 6.7%p for $CO_2$ and CO which are relatively high. Through this study, it is possible to predict gas products accurately by using CFD simulation approach. Moreover, this modeling approach should be developed to predict fluidized bed reactor performance and other gas product yields.

Keywords

Fluidized bed reactor;Biomass;Fast pyrolysis;Bio-oil;CFD

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Acknowledgement

Supported by : 한국산업통상자원부