Mechanical
circulators are installed in a vacuum pan to reduce the color of the sugar,
along with an increase in the production of pans to reduce boiling time. Due to
the increase in heat transfer coefficient, the accumulation time is reduced by
up to 30%, thereby increasing the unit's production capacity.
The mechanical construction of the circulator consists of a motor
driving gearbox that reduces the speed required for the connected shafts and
impellers. The sealing is arranged between the circular and the pan to maintain
the vacuum. This seal may be of a packed gland type. Variable speed direct
torque control drive (VFD)
is used to operate the motor.
The drive is programmed to run as fast as possible
while keeping the motor within the allowable power and torque capabilities. If
the masculine viscosity
increases, the drive senses an increase in the required torque and slows the
motor from overloading any component. If for muscular cooling, the drive
travels when the muscovite viscosity increases at the lowest speed of driving.
Technical Superiority:
• It
is commonly used in the sugar industry to enhance the efficiency of the crystallization process.
• A, B
and C can be used for massaiites.
• Improves
heat transfer efficiency by imposing higher rates of heat transfer and evaporation.
• Avoid
loss of head and less deposition on the tubes due to Friction of
circulating crystals.
• Uniform
and Compatible crystal formation.
• colour Less 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 tank .
• Opportunity
to use low steam pressure for heating.
• Centrifuge
washing water use less .
• The
use of low pressure steam can result in reduced steam consumption.
Key Design Features:
• Process design basis
adopted over the Traditional thumb rule approach of pan tonnage based motor rating selection.
• Saving in time up to
30% for the strike.
• Maximum heat 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.
