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FCC Expanders
Dresser-Rand has over 30 years experience in the design, manufacture, installation and maintenance of fluid catalytic cracking (FCC) expanders. Over that time the company has shipped over 70 units of various frame sizes to nearly every part of the world to customers that include nearly every major oil company. This figure represents over 60% of all FCC units installed worldwide, more than double any other manufacturer worldwide. We have achieved such milestones as shipping the world's first two-stage unit in 1981 and achieving five million operating hours in 1994. Dresser-Rand has a fleet operating availability of over 99% between planned shutdowns. Key features of the FCC product line include:
- Four frame sizes
- One or two stages
- Overhung stiff-shaft design
- State-of-the-art coatings for increased blade life and corrosion resistance
- 1400°F design inlet temperature
- Viewports for on-line viewing of blading
- "Kingsbury"-type thrust bearings
- Casings and flanges designed to minimize thermal stresses
- Rear Pull Rotor Design for Convenient Rotor Access without Disconnection of Inlet Piping
- New Stator Options Available for Extra Strength or Operational Flexibility
Multi-stage High Temperature Expanders
Dresser-Rand offers a comprehensive line of nitric acid power recovery expanders that include the following key features:
- Maximum design conditions:
- Inlet Gas Temperature = 1300°F (704 C);
- Inlet Pressure = 250 psia (1722 kPa)
- Multistage design modified to provide optimum power recovery for each application
- Four frame sizes
- Three to five stages
- Curvic coupling rotor design
- Separate high pressure and low pressure casings
- Horizontally split casings for serviceability
- Kingsbury type thrust bearing
- Sleeve or tilt pad radial bearings
- External horizontally split bearing housings
Multi-stage Medium Temperature Expanders
Dresser-Rand offers a comprehensive line of multistage medium temperature power recovery expanders. These units employ a combination of impulse and reaction staging and are designed for less than 1000°F. These units include the following key features:
- Various frames to fit application
- Stages as required
- Beam-type construction
- 1000°F design inlet temperature
- Horizontally split casing
- External horizontally split bearing housings