The success of this project requires the installation of a new boiler unit. It will imply a change in the input of products at the key stage of crystallization.

Evaporation in sugar plants has two main functions:

1. It provides low pressured steam in different parts of the sugar plants depending on thermal level (pressure/temperature) from 130° to 90°C. This steam results from the electricity in turbo generator.
2. It condenses the sugar beet juice from 17.5% up to 68-72% of dry matter (syrup). Mass of the syrup resulting from evaporation is then only about 25% of the incoming juice, which is done in 5 steps or evaporation phases.

General principle:

The juice is heated until boiling. Water steam produced is reintegrated to feed other equipment in the factory, and juice is getting more condensed (syrup).

In a single evaporator system, the steam produced by the juice boiling is not reused. For each kg of evaporated water, there must be provided 1 kg of steam heating. This process generates GHG emissions that could be avoided, and this is the reason why we looked for improvements.

Multiple evaporator system enables a bigger evaporation of water with the same amount of initial steam. In this system, 1 kg of steam input in the 1^st stage evaporates 1 kg of juice. This same kg of water also evaporates 1 kg of water in the next stage and so on.

To allow reduction of steam consumption in a sugar plant through a multiple evaporator system, the global output of evaporated water must remain below each level to keep positive savings of energy and GHG emissions.

Specific case of Kamenski plant:

1. At Kamenski sugar plant, evaporation at the 4^th stage was poor after the recent increase of the plant production capacity. This resulted in an accrued consumption of energy and GHG emission for the 3^rd evaporation stage.

The boiler unit added in Kamenski aims at increasing the evaporation capacity of the 4^th stage to get a warmer steam and thus reduce the use of steam produced from gas consumption.