BMA falling-film evaporators

The heart of the heat economy

The way an evaporator plant works has a crucial impact on the heat economy of sugar factories and refineries. Perfectly tailored to the overall process, it allows effective action to increase the energy efficiency of upstream or downstream process steps.

The unique juice distribution system from BMA

Thanks to a structure comprising preliminary, intermediate and principal duct levels in juice distributor from BMA, the juice flow rates are constantly and evenly reduced. As a result, the heating tubes are covered in a very even film of juice. This prevents the formation of sugar charcoal while also optimising heat transfer.

Slim and compact

Thanks to the juice separator integrated below the calandria, the evaporator has an especially slim design, reducing its footprint and saving steel construction costs. The juice distributor is easily accessible, which is not the case with evaporators that have the juice separator at the top.

Equal to all challenges

In evaporators from BMA, the volume of juice fed into or discharged from the machine does not affect circulation, making them very reliable in operation.

Cleaning

Falling-film evaporators from BMA used in cane sugar factories can be cleaned chemically and / or mechanically. Should chemical cleaning not be sufficient, the machine can be re-cleaned mechanically. For this purpose, the top tube plate needs to be accessed, which is achieved by opening the cover and removing the juice distributor. Optionally, a higher juice distributor dome can be provided, which allows the cover to remain closed and the juice distributor to remain in the dome. Details of the cleaning methods can be found in a separate description.

Evaporators from BMA can be tailored to specific operating conditions; custom solutions for different applications are also available.

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Key benefits at a glance

Customisation for specific operating conditions
Well-thought out engineering concept for efficient evaporator use
Very high heat transfer
Short retention time of the juice
Even juice distribution prevents formation of sugar charcoal
Superior droplet separation prevents sugar losses
Reliable operation also under varying operating conditions
Ease of access
Small footprint
Optional: reduced investment costs with locally manufactured parts

Reduced steam use with FFE

Introducing falling-film evaporators (FFE) in multi-effect evaporation has significantly lowered steam consumption in cane sugar factories. Every tonne of steam saved reduces bagasse use by ½ tonne, which can then generate renewable power. For example, a 10,000 TCD factory using a sextuple FFE system uses just 28.6% steam on cane. The resulting bagasse savings can generate 39.4 MW of power, adding $45.6 million in revenue over a 180-day season by exporting clean energy to the grid.