Gas Cyclone Efficiency
Gas Cyclone Efficiency
(OP)
I'm looking for some correlations to determine cyclone efficiency with cyclone drawing & feed distribution particle sizes.
I read some information about D50. Can I calculate the particule size for other than D50? I would like to be able to traced the partition curve.
Thanks in advance!
I read some information about D50. Can I calculate the particule size for other than D50? I would like to be able to traced the partition curve.
Thanks in advance!





RE: Gas Cyclone Efficiency
Sticking to simplicity, the efficiency for a given particle size, of same density, can be given by
Collection efficienct=1./(1.+(d50/d)^beta))
where beta is an exponent, usually between 2 and 3, and often closer to 2. than to 3.
There are numerous formulas relating the efficiency of a cyclone of given geometry. The above formula allows you to have an idea, using a beta of 2.
RE: Gas Cyclone Efficiency
RE: Gas Cyclone Efficiency
RE: Gas Cyclone Efficiency
Offshore Engineering&Design
RE: Gas Cyclone Efficiency
In a gas cyclone, if you increase the flowrate the velocities will increase and so will the efficiency.
However you pay a great price for this: the pressure drop much increases.
For reverse flow gas cyclones, there is no mystery: the collection efficiency is directly linked to the pressure drop.
I know not everyone will agree, but I would say, that for a given particule size distribution, there are no classical designs that will be much better than others.
So if you have particule sizes large enough (say > 10 microns) I would not bother for any special feature and I would not do what chief suggests.
For a given pressure drop, you'll get an efficiency.
Again increasing the flowrate gives a better efficiency
If you need more, please stete your actual PSD (particule size distribution), particule load and flowrate range
RE: Gas Cyclone Efficiency
Best regards
Morten
RE: Gas Cyclone Efficiency
I find what I need in the Perry 7th...
A last question : when i'm calculating the load of solids in m3 of gas (fig. 17-40, Perry, 7th), should I consider standard m3 (60°F & 14.7 psig) or actual m3 (operating conditions)?
RE: Gas Cyclone Efficiency