Batch Pan with Honeycomb Calandria
SED’s specially designed batch pan with honeycomb calandria features a bundle of tubes arranged in a honeycomb pattern without traditional top and bottom tubeplates. A central downtake, equipped with SED’s uniquely designed six-blade mechanical circulator, boosts massecuite circulation for uniform crystal growth,higher exhaustion and higher heat transfer within the tubes.
Working Principle
Heat Transfer
Steam or vapour condenses on the outside of the tubes, transferring heat to the feed (juice/massecuite) inside the tubes. This causes water to evaporate, concentrating the solution. The honeycomb calandria design enables operation at a lower temperature difference (ΔT), ensuring efficient evaporation and controlled crystallization while minimizing sucrose degradation.
Massecuite Circulation
Efficient circulation is promoted by the large central downtake and optimized honeycomb tube arrangement. This ensures uniform flow throughout the calandria, preventing localized overheating, eliminating stagnant zones, and maintaining consistent concentration across the pan..
Evaporation and Crystallization
As evaporation progresses, the liquor becomes supersaturated, initiating and sustaining crystal growth. Continuous circulation keeps crystals uniformly suspended, ensuring homogeneous growth and a narrow crystal size distribution. The generated vapours are either condensed in a condenser or reused through Mechanical Vapour Recompression (MVR), reducing overall energy consumption.
Batch Completion and Discharge
When the desired crystal size and massecuite brix are achieved, the boiling process is stopped. The vacuum is gradually released, and the massecuite is discharged from the pan into crystallizers.
Why IsIt Needed?
Improves sugar quality with uniform crystallization and better massecuite circulation.
Increases yield through higher exhaustion.
Efficient heat transfer and low ΔT operation significantly reduce energy consumption
Handles all massecuite types while minimizing false grains and colour inclusion.
Compatible with low-temperature vapor, allowing seamless integration with MVR systems.
Fully automated system ensures easy operation and low maintenance.
Improves sugar quality with uniform crystallization and better massecuite circulation.
Handles all massecuite types while minimizing false grains and colour inclusion.
Increases yield through higher exhaustion.
Compatible with low-temperature vapor, allowing seamless integration with MVR systems.
Efficient heat transfer and low ΔT operation significantly reduce energy consumption
Fully automated system ensures easy operation and low maintenance.
SalientFeatures
Enhanced heat transfer improves crystallization and enables reliable operation with low-temperature vapors, ensuring MVR compatibility.
Improved circulation and uniform saturation reduces conglomeration, prevents false grain formation, minimal colour inclusion and deliver higher massecuite quality.
Large downtake enables efficient circulation.
Reduced massecuite stagnation due to the absence of tube plates, leading to lower washing steam consumption and minimized sugar recirculation.
Optimized design enables integration of larger heating surfaces, allowing for higher-capacity pans within a reduced footprint.
Reduced diameter and prefabricated single piece calandria significantly lower transportation costs and minimizes installation time.
Efficient extraction of non-condensable gases (NCGs) enhances overall thermal performance, ensuring optimal steam utilization and reduced energy demand.
Superior material grades for calandria enhances equipment durability and extends service life.
Suitable for all types of massecuites (Refined, Raw, A, B and C).
ControlAdvantages
Ease of operation
Provision for flow, temperature, pressure, level and consistency measurement
Auto cleaning/rinsing cycle of valves & sensors to minimize shutdowns
Seed/Feed ratio control for least crystal variation
Fully automated system resulting no skilled man power requirement
Transform Sugar Production with SEDLProduction with SEDL
SEDL's Batch Pans offer significant improvements in terms of yield and reduced energy (steam & power) requirements have been achieved with the use of specially designed and patented honeycomb calandria with circulators. Contact us to explore more about the Batch Pans.
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