Development of DEM–CFD Simulation of Combustion Flow in Incinerator with the Representative Particle Model

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Azri Bin Alias⁶  Kenya Kuwagi¹  Noritake Sugitsue³  Toshinori Kouchi⁴  Toru Hyakutake²  Nobuo Takahashi³  Kaoru Yokoyama³  Yoshiyuki Ohara³  Degang Rong⁵  Toshihiro Takami¹  Shinichiro Yanase⁴  Hiroshi Takeda⁵ 

[1] Department of Mechanical Systems Engineering, Okayama University of Science;Graduate School of Engineering, Yokohama National University;Japan Atomic Energy Agency;Graduate School of Natural Science and Technology, Okayama University;R-flow Corporation Ltd., Takanashi Building;Faculty of Mechanical Engineering, University Malaysia Pahang

关键词: Incinerator;    DEM–CFD Simulation;    Combustion;    Waste;   

DOI  :  10.1252/jcej.15we099

来源: Maruzen Company Ltd

【 摘 要 】

References(17)A simulation code based on the discrete element method (DEM) and computational fluid dynamics (CFD) coupling model was developed to simulate the behavior of radioactive cesium in waste incinerators. The waste lump was represented by particles in the simulation. The energy equation for a mixed gas, diffusion equation for each gas component, as well as the energy, drying, pyrolysis, and combustion equations for each particle were solved in the simulation by adding a combustion model to the standard DEM–CFD coupling model. The particle size of the waste changed as drying, pyrolysis, and combustion progressed. At the end of the combustion process, particle waste became ash, and the number of ash particles was enormous. To avoid an excessive computational load due to the high particle number, a similar assembly model was adopted to reduce the particle number in the calculation. There was a good agreement between the simulation and experimental results for the temperature at the outlet of the furnace and the flue gas composition.

【 授权许可】

Unknown