Feeder valve is sized improperly for the particulate loading and density
SOLUTION
- Resize and replace the feeder valve
Cyclone discharge diameter or dipleg is too small for the particulate loading and apparent density
SOLUTION
- Redesign and replace lower sections
Dipleg plugs
SOLUTION
- Add dipleg purges if problem is caused by poor aeration (although the introduction of purge gas itself can reduce collection efficiency this is preferable to 0% collection resulting from a plug).
- Check and repair dipleg discharge valve
Particulate build up on surfaces
SOLUTION
- If caused by condensation, insulate and/or heat trace
- Consider non stick coatings or polished surfaces
- Periodic vibration and/or air cannon
- Replace with a cyclone with greater internal clearances
- Provide easy access for cleaning and maintenance