Shivaji Nagar, Behind Observatory,Pune

+91 8888849411

Mechanical Pan Circulators

Mechanical circulators are installed in vacuum pans in order to reduce the boiling time, reduction in sugar colour with an increase in pan yield. With increase in heat transfer coefficient, the strike time reduces up to 30%, which in turn increases the production capacity of the unit.

The mechanical construction of a circulator consists of motor driving the gearbox which offers the required speed reduction to the connected shaft and impellers. A sealing arrangement is provided between the circulator and the pan so as to maintain the vacuum. This seal may be of the packed gland type. A variable speed direct torque control drive (VFD) is used to drive the motor.

The drive is programmed to run at the fastest speed possible while keeping within the motor's allowable power and torque capabilities. If the massecuite viscosity increases, the drive senses the increase in required torque and slows down the motor to prevent any component from being overloaded. If the massecuite viscosity increases to a point where the drive is running at the lowest speed allowable, for motor cooling, then the drive trips.

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Technical Superiority:

  • Typically used in Sugar industry to enhance the efficiency of the crystallization process.
  • Can be used for A, B and C massecuites.
  • Boosts the heat transfer efficiency by inducing higher rate of heat transfer and evaporation.
  • Avoid loss of head and less deposition on the tubes due to abrasion of circulating crystals.
  • Uniform and consistent crystal formation.
  • Less colour in the sugar and reduced risk of sugar losses by local overheating with low risk of smelting of crystals.
  • Possibility of feeding the pan with syrup and molasses.
  • Opportunity to utilize lower steam pressure for heating.
  • Reduction in centrifuge wash water consumption.
  • Possibility of use of lower pressure vapours resulting in reduction of steam consumption.

Key Design Features:

  • Process design basis adopted over the conventional thumb rule approach of pan tonnage based motor rating selection.
  • Saving in time up to 30% for the strike.
  • Maximum temperature reached by the massecuite substantially lower.
  • Rugged heavy duty design.
  • Mechanical arrangement to ease maintenance activity.
  • Options of gearbox types – planetary, inline helical, bevel helical arrangements.
  • Genuine material specifications with material test certificates.

Sudarshan Chemicals Industries Ltd

Industrial Mixing Solutions Division

1162/2, Shivaji Nagar, Behind Observatory,
       Pune-411005, Maharashtra, India.
+91 8888849411 / +91 (020) 2553 5384 / 2553 0933
Gat No:1559, Shelar Wasti, Dehu-Alandi Road, Chikhali,
       Pune-411026, Maharashtra, India.
+91 8888849414