Closed-circuit fluid-bed drying or cooling.
Nitrogen circulates through the sealed fluid bed to dry or cool the material. The process gas passes through solid separation and solvent-condensation stages before being reheated or cooled and returned to the bed.

| Model | Drying Capacity (kg/h) | Bed Area (m²) | Fan Power (kW) | Inlet-Air Temperature (°C) | Circulating Medium | Solvent Recovery (%) |
| XFG-10 | 5–20 | 0.25 | 7.5 | Room temperature–300 | Nitrogen | 95–99 |
| XFG-20 | 10–40 | 0.5 | 11 | Room temperature–300 | Nitrogen | 95–99 |
| XFG-30 | 20–80 | 1 | 15 | Room temperature–300 | Nitrogen | 95–99 |
| XFG-50 | 40–160 | 2 | 30 | Room temperature–300 | Nitrogen | 95–99 |
| XFG-80 | 60–240 | 3 | 75 | Room temperature–300 | Nitrogen | 95–99 |
| XFG-100 | 80–320 | 4 | 90 | Room temperature–300 | Nitrogen | 95–99 |