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CYCLONE is a software useful for analysis and optimisation of existing cyclones as well as for design of new cyclones.  It considers the effect of cyclone dimensions, gas and solids flow rates, feed solids density, concentration and size distribution, plant elevation from sea level, operating temperature etc. and predicts the following:

  • Cut-particle diameter, d50, and similarly d80, d90, d95 and d99
  • The complete efficiency curve, or the Tromp curve
  • The overall cyclone collection efficiency
  • Pressure drop
The software is available in two versions : simulation-version and design-version.  In the design-version, the inputs required are:
  • Number of cyclones (you can even design for twin cyclones or more than two cyclones)
  • Inlet gas flow rate, temperature and molecular weight of the gas (gas may or may not be air)
  • Inlet solids flow rate and particle density (with this, gas/solid ratio gets determined)
  • Plant elevation from sea-level
  • Inlet feed particle size distribution
  • Entrance velocity (you can choose the optimum practical value by taking out predictions for a few values)
Based on the above inputs, the following parameters are predicted:
  • Cyclone design dimensions and collection hopper design dimensions
  • Cut-particle diameter of the cyclone, d50.  The values of d80, d90, d95 and d99 are also predicted.
  • Pressure drop
  • Collection efficiency of individual size fractions.  This Tromp curve is also automatically generated in a graph.
  • Total collection efficiency and outlet dust loading
  • The entered feed particle size distribution is also depicted graphically.
While the above design-version is useful to obtain the dimensions, practical considerations may sometimes dictate slightly different dimensions from those calculated.  Alternately, you may like to choose some dimensions rounded off to nearest desirable integers.  For such cases, simulation-version would be useful wherein the cyclone dimensions would be entered instead of the entrance velocity with all other inputs being the same as above. 

In the design version of the software, the cyclone dimensions are calculated from a user-specified entrance velocity.  For the cyclone so designed, the above mentioned performance parameters are also predicted.

The software has in-built database management functions facilitating a record-keeping of all the cyclones designed/analysed. 

The companion software CLASANAL is useful to determine the cyclone performance parameters d50, Tromp curve, direct bypass fraction and sharpness index of cut from the measured particle size distributions (psd) of feed, underflow and overflow streams.  The software SIZEANAL is useful to obtain the psd's themselves.

Address :  Dr. K. Viswanathan, B-113/2 East of Kailash, New Delhi 110065, INDIAPh : 91 11 26830345, Mob: 9818803624.   
  Email:  ptcsoftware@softhome.net, ptcsoftware@rediffmail.com.