Multiple effect evaporation is abbreviated as MEE. Multiple effects are relative to single-effect, which has only one effective evaporator, while multiple effects have multiple evaporators; The biggest difference is that the single-effect steam is directly condensed, while the secondary steam of the front effect body of the multi-effect is continuously utilized to save energy consumption. Multi-effect evaporation is the main means of energy saving. Generally speaking, the more effects there are, the better the steam economy will be. Generally, three-effect and four-effect are more common. Multi-effect evaporators are divided into tube-type and plate-type multi-effect evaporators in terms of form, and there are also differences in evaporation types such as falling film evaporation, rising film evaporation, and co-current and counter-current evaporation.
The most prominent feature of multi-effect evaporators is their high efficiency and energy saving. By fully utilizing the energy of secondary steam, the energy consumption of multi-effect evaporators is more than 30% lower than that of single-effect evaporators.
Multi-effect evaporators have a relatively compact structure and occupy a small footprint. Due to their multi-stage evaporator series connection, the equipment has a smaller volume, enabling better integration with other equipment in the production process and improving production efficiency.
Multi-effect evaporators can accommodate different materials and perform various process treatments.
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