| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.2454 |
| 발표분야 |
P2M기반 다상흐름 반응기 기술포럼 창립기념 심포지엄(유동층부문위원회) |
| 제목 |
다상흐름 반응기의 CFD 모델을 통한 공정개발 |
| 초록 |
Hydrodynamic characteristics in a wind-box and bubbling fluidized-bed (BFB) gasifier zone of a dual fluidized-bed (DFB) were investigated by a gas-solid two-phase 3D computational fluid dynamics (CFD) model. The gas and solid phases were treated by an Eulerian-Eulerian multiphase model, coupled with the realizable k-epsilon turbulence model and the kinetic theory of granular flows (KTGF) describing the random motion of solid particles. Pressure drops obtained from the cold-rig CFD simulation were validated with experimental data which were measured in a pilot-scale BFB using air as a fluidization agent and sand as heat carrier particles at an operating temperature of 800 oC. Hydrodynamics of the fluidized-bed with a nozzle-type gas distributor were evaluated in terms of the pressure drop, solids volume fraction (SVF), uniformity index (UI), and solids stack volume (SSV). It was demonstrated that the CFD results represent well gas and solid hydrodynamics according to the geometry of gas distributor |
| 저자 |
임영일 |
| 소속 |
한경대 |
| 키워드 |
Multiphase flow; Computational fluid dynamics (CFD); Fluidized-bed; Gas distributor; Hydrodynamics
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
