Abstract
The authors brought forward composite fluidization structure against the problems in the CFB-FGD. Axial swirl vanes, which formed the composite fluidization of swirl-once through flow, were installed in the venturi. The characteristics of gas-solid flow at cold state were discussed through experiment and simulation. The comparison between the composite fluidization and the once-through fluidization was carried out. As a result, the composite fluidization mode is nonuniform air distribution mode. Its tangent velocity is larger than that of the once-through fluidization, which results in the longer particles residence time, higher particles concentration, stronger fluctuation, and better capability of diffusion and mixture. The uniformity is improved and can be achieved more quickly, which improves the flow field in the composite fluidization.
| Original language | English |
|---|---|
| Pages (from-to) | 1121-1125 |
| Number of pages | 5 |
| Journal | Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology |
| Volume | 42 |
| Issue number | 7 |
| State | Published - Jul 2010 |
| Externally published | Yes |
Keywords
- Composite fluidization
- Flue gas desulfurization
- Once-through fluidization
- Swirl flow
- Uniformity
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