Vacuum Pans

Vacuum Pans is used for further processing of the syrup that comes out from evaporator section of 60O Brix which is converted into 90O Brix to 100O Brix that leads to the formation of sugar crystals in the pan. These are used for attaining consistent formation of crystals through the optimum removal of noxious gases & condensate and operate on hydraulic & pneumatic operated discharge valves that ensure low steam consumption as well as better performance support.


Working principle :

• At pan stage, syrup from evaporators gets converted to crystal sugar
• Process involves charge of syrup taken into vacuum pan and again boiled that leads to introduction of very fine "seed" crystals
• With due evaporation of water, fresh syrup is added with sugar deposited on seed
• Process continues till crystals reach desired size of around 1 mm square
• Resultant semi liquid mass of sugar crystals & molasses is called 'massecuite'

Customization :

• Our expertise lies in customizing pans as per process requirements within range of 20MT to 120 MT
• Further, pan diameters can vary from 2 m to 4.5 m with height from 4 m to 9 m

Design Features :

• Vacuum pans steel fabricated in vertical cylindrical construction with support of stainless steel pipes that come fixed along the length
• Pans coming high pressure tested prior to completion
• Calendria normally supplied separate with associated body in parts and assembled on-site
• Advantages - Vacuum Pans
• Delivering enhanced evaporation rates because of fast boiling
• Delivers higher heating surface volume ratio
• Provides for quicker as well as higher circulation that results in uniform grain size
• Allows minimizing of boiling period of massecuite that assist in achieving better pan capacity
• Assists in reducing steam consumption by about 25% in comparison to high head pan
• Allows for uniform steam distribution in Calendria through provision of annular space around tube plate

Discharge Valve :
Hydraulic discharge valves provided in pan allows for achieving minimized pan dropping/washing time as well as assists in enhancing pan capacity by 5 to 10%. Some key features are -

• Providing saving of 10 minutes during pan dropping that in turn assists in enhancing pan capacity
• Allows for complete operation ease
• Involved operations can be handled by single person
• Requires less maintenance through avoiding gear mechanism

Applications :

• Used for formation of sugar crystal
• Helps in attaining consistent crystal formation through competent removal of noxious gases & condensate