한국폐기물자원순환학회지 제 34권 제7호 (p.685-696)

Multiphase-Particle in Cell 해석 기법을 이용한 원뿔형 분사층 반응기 내 바이오매스의 급속열분해 반응 전산해석

CPFD Simulation for Fast Pyrolysis Reaction of Biomass in a Conical Spouted Bed Reactor using Multiphase-particle in Cell Approach
키워드 :
Biomass,Conical spouted bed,Fast pyrolysis,Multiphase flow,MP-PIC

초록

This study focuses on computational particle fluid dynamics (CPFD) modeling for the fast pyrolysis of biomass in a conical spouted bed reactor. The CPFD simulation was conducted to understand the hydrodynamics, heat transfer, and biomass fast pyrolysis reaction of the conical spouted bed reactor and the multiphase-particle in cell (MP-PIC) model was used to investigate the fast pyrolysis of biomass in a conical spouted bed reactor. A two-stage semi-global kinetics model was applied to model the fast pyrolysis reaction of biomass and the commercial code (Barracuda) was used in simulations. The temperature of solid particles in a conical spouted bed reactor showed a uniform temperature distribution along the reactor height. The yield of fast pyrolysis products from the simulation was compared with the experimental data; the yield of fast pyrolysis products was 74.1wt.% tar, 17.4wt.% gas, and 8.5wt.% char. The comparison of experimental measurements and model predictions shows the model’s accuracy. The CPFD simulation results had great potential to aid the future design and optimization of the fast pyrolysis process for biomass.