Research Article
Choking Affects the Operation Diagram of a CFB Riser
Table 1
Powders used in the different rigs.
| | Powder | (µm) | (kg/m³) | 90% range (µm) | Ar | (m/s) | (m/s) | Riser I.D. (m) |
| | Rounded sand | 74 | 2260 | 45–90 | 33 | 0.44 | 2.20 | 0.05 | | Angular sand | 72 | 2660 | 35–95 | 36 | 0.41 | 1.73 | 0.1 | | Spent FCC | 70 | 1630 | 45–100 | 20 | 0.24 | 1.69 | 0.1 | | Rounded sand | 84 | 2260 | 35–110 | 48 | 0.46 | 2.56 | 0.1 | | Angular sand | 98 | 2660 | 60–130 | 98 | 0.77 | 3.67 | 0.15 |
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