Rotoflow’s generator-loaded turboexpanders offer the best match of efficiency and long-term capital investment, providing refrigeration and economic power recovery in air separation and liquefaction facilities. Used for gas service and dense fluid applications, our generator-loaded expanders offer efficient, low-cost designs for power recovery on new or existing processes. Features include an expander impeller mounted directly to the gearbox pinion to eliminate the need for high-speed coupling and an extra set of high-speed bearings.
Direct-Drive Generator-Loaded Expanders
The direct-drive option, when feasible, eliminates the need for speed reduction, gearboxes, and associated equipment
Integrally Geared Generator-Loaded Expanders
Rotoflow’s high-efficiency integrally geared generator-loaded expanders are directly mounted to a parallel shaft gearbox. Single or multiple stages can be configured on a single gearbox, and all equipment is aerodynamically optimized for your exact application and process.
Externally Geared Generator-Loaded Expanders
Expanders with an external gearbox feature patented bearings, with a common oil supply system for the complete package.
Multi-Stage Generator-Loaded Expanders
Designed for cryogenic service, Rotoflow’s multi-stage generator-loaded expanders are based on innovative system designs that maximize performance and efficiency. Expander packages can be customized to meet all application requirements.
Typical Design Capabilities
| ASU | Hydrocarbon | |
| Power | 4 to 5,000 kW (6 to 6,705 hp) | 32 to 22,569 kW (43 to 30,265 hp) |
| Speed | Up to 40,000 rpm | Up to 50,000 rpm |
| Inlet Pressure | 4 to 100 barg (60 to 1,450 psig) | 1.7 to 210 barg (25 to 3,045 psig) |
| Temperature | -200 to +150°C (-320 to +300°F) | -270 to +340°C (-454 to +644°F) |
| Outlet Flow | 57 to 21,000 am3/hr (33 to 12,360 ACFM) | 56 to 163,173 am3/hr (33 to 96,040 ACFM) |
| Impellers | 89 to 483mm (3.5 to 19.0 in.) | 70 to 1,270mm (2.75 to 50 in.) |
