EVAPORATOR AUTOMATION WITH BRIX ANALYZER AND DENSITY BRIX SENSOR
ROBERTS / SEMI KESTNER EVAPORATOR AND CONDENSER CONTROLS
ROBERTS / SEMI KESTNER TYPE EVAPORATOR AUTOMATION:
Variation Of Heat-Transfer Coefficient As A Function Of Juice Level In The Calandria Clearly Shows How Drastically Juice Level Affects Heating Efficiency.
Benefits Of Evaporator Automation:
- Maintained Heat Transfer Coefficient Optimizes The Evaporation Efficiency
- Maintained Outlet Brix Of All Bodies Maintains Consistent Efficiency
- Maintained Body Level And Temperature Of Each Body Hence Excellent Mass Balance Is Achieved Besides Avoiding Entrainment
- Unnecessary Human Errors Leading To Process Disturbance And Stoppages Are Completely Avoided
- Huge Power And Water Saving
- Intelligent Data Analysis With Maintenance And Cleaning Alarming System Reduces Inversion And Improves Sugar Recovery
- Constant Evaporation Rate Is Maintained, This Increases Overall Efficiency
Application In Sugar Industries For Brix Measurement And Automation Of:
- Batch Type Vacuum Pan (A, B, C, And Graining Pans)
- Continuous Vacuum Pan
- Vertical Continuous Pan
- Roberts / Semi-Kestner Evaporator
- Falling Film Evaporators
- Sugar Melter Automation
- Molasses Conditioner Juice And Syrup Mixer
- Baume Of Milk Of Lime
Evaporator Automation:
- Level Of Evaporator Defines Its Efficiency. The Above Graph Shows The Variation Of The Heat Transfer Coefficient With Juice Level. Even A Small 5% Variation In Level Drastically Reduces The Heat Transfer Coefficient And In Turn, Seriously Reduces The Heating Efficiency Of The Rising Film Evaporator Body.
- Highly Accurate Sensing Of Fluid-Density-Brix Gives An Accurate Feedback Control.
Evaporator Automation Features:
- Fluid-Density-Brix Sensing And Control Of The Last Body By Controlling Outlet Control Valve
- Level And Temperature Sensing Of Each Body
- Level Control Of Each Body To Maximize Evaporator Efficiency By Optimizing The Heat Transfer Coefficient
- Heating Steam / Vapour Temperature And Pressure Sensing
- Level Maintained In Each Body By Controlling Each Body'S Outlet Control Valve
- Fluid-Density-Brix Maintained In The Last Body And Treated As The Master Control For Previous Bodies
- Preceding Body Level Synchronization For All Bodies Including Juice Tanks And Cane Carriers
- Intelligent Data Analysis With Maintenance And Cleaning Alarming System
Exhaust Steam Condensate Bypass System:
- Exhaust Steam Condensate Conductivity Sensing To Detect Entrainment
- 3-Way Valve For Exhaust Steam Bypass
- If Entrainment Is Detected, A 3-Way Valve Is Operated To Bypass The Steam Condensate To Other Line And Not Allow Contaminated Condensate To Enter The Boiler Feed Water
Condenser Automation Advantages From An Evaporator Perspective:
- Avoid Entrainment Especially In Semi-Condenser Automation Advantages From An Evaporator Perspective:
- Kestner Due To Uneven Vacuum Shocks And Avoid Time And Resources Wasted In Rework
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Constant Vacuum
- Maintained Vacuum Ensures Good Pan Boiling And Evaporation Efficiency
- Maintained Vacuum Also Ensures Stabilized Vapour Load Thus Heating Efficiency Is Increased
First Body Falling Film Evaporator With Quad Set Of Conventional Bodies:
Condenser Automation Philosophy:
- Vapour Vacuum And Temperature Sensed
- Condensate Temperature Sensed In Tail Pipe
- Temperature Difference Calculated
- Vacuum And Temperature Difference Are Both Analyzed To Derive Remote Dynamic Set Point
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Spray Water Is Controlled As Below:
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Multi-Entry System:
- Spray Jets Are Controlled By Separate On/Off Type Control Valves As Per The Remote Dynamic Set-Point
- 2, 3, Or 4 Sets Of Nozzles For Spray As Per Design
- 1 Or 2 Sets Of Jet Nozzles As Per Design Are Controlled Only If Necessary
- Single-Entry System:
- Spray Jets Are Controlled By A Control Valve In Pid Action As Per The Remote Dynamic Set-Point
- 1 or 2 Sets Of Jet Nozzles As Per Design Are Controlled Only If Necessary
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Multi-Entry System:
Schematic: Condenser Automation
Screenshot: Ffe And Condenser Automation
Density Brix Sensor Guarantees Excellent Process Efficiency And Increases Profits
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Brix Of Syrup, Molasses And Melt In:
- All Falling And Rising Film Evaporator Bodies
- Syrup And Juice Mixing Vessels For Transfer To Distillery
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Molasses Conditioners, Sugar Melters
- Improve Evaporation Efficiency And Steam Economy
Brix Of Syrup, Massecuite, Molasses And Melt Brix In:
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Brix Of Syrup, Molasses And Melt In:
- All Batch Pans Of A, B, And C Massecuites With Or Without Stirrer
- Vertical Continuous PANS Or VKT
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Horizontal Continuous Pans
- Reduce Batch Pan Strike Time
- Avoid False Grain, Reduce Steam And Water Consumption In Pans
- Optimize Crystal Growth And Maximize Recovery
- Improve Overall Pan Efficiency And Get Consistent Performance
Brix Of Syrup, Massecuite, Molasses And Melt Brix In:
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Brix Of Syrup, Molasses And Melt In:
- All Batch Pans Of A, B, And C Massecuites With Or Without Stirrer
- Vertical Continuous PANS Or VKT
-
Horizontal Continuous Pans
- Reduce Batch Pan Strike Time
- Avoid False Grain, Reduce Steam And Water Consumption In Pans
- Optimize Crystal Growth And Maximize Recovery
- Improve Overall Pan Efficiency And Get Consistent Performance
Baume Of Milk Of Lime
- Maintain Density Of M.O.L., Improve Liming Efficiency, And Get Constant And Better Ph Control
Sensor Model: A24Fdsrs2: Evaporator, Falling Film Evaporator, Juice And Syrup
Mixing Vessel


