Table 4 Construction parameters of DSM columns.
Group | Mixing shaft speed (m/min) | Blade number | Number of mixings | Mixing method |
|---|---|---|---|---|
G1 | 1.05, 1.05, 1.5, 1.5 | 10 | Four-mixing-three-injection | Unidirectional |
G2 | 0.6, 0.8 | 10 | Two-mixing-two-injection | Bidirectional |
G3 | 1.05, 1.5, 1.5, 1.5 | 8 | Four-mixing-three-injection (G6 has a remixing at 6–9 m) | |
G4 | 1.05, 1.5, 1.5, 1.5 | 10 | ||
G5 | 1.05, 1.05, 1.5, 1.5 | |||
G6 | 1.05, 1.05, 1.5, 1.5 | |||
G7 | 1.05, 1.05, 1.8, 1.8, 1.8, 1.8 | Six-mixing-five-injection |
