Magnetic Bearings in Turboexpander Applications

Developed by: AIChE
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    March 21, 2010
  • Skill Level:
  • PDHs:

Share This Post:

You will be able to download and print a certificate for PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.
Magnetic bearings in turboexpander have become the standard for the installation in gas processing and ethylene plants; there are areas of the design that are challenging to the designer for each application. This paper begins with a review of magnetic bearings, the components and how they operate with a focus on ethylene applications followed by a discussion of enthalpy drop and its relation to the effect on tip speed, and spouting velocity and efficiency and power related to magnetic bearing design. The rotor length for a magnetic bearing is longer than for oil bearing machines and with high tip speed it is possible to hit several machine limits. A discussion on these rotordynamic effects will be covered including dynamic stiffness and tuning.



Do you already own this?

Log In for instructions on accessing this content.


AIChE Member Credits 0.5
AIChE Members $15.00
AIChE Undergraduate Student Members Free
AIChE Graduate Student Members Free
Non-Members $25.00