Should a central circulation tube evaporator be used or a natural external circulation evaporator?
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We need to concentrate and evaporate the sodium sulfate solution at a rate of about 1 ton per hour. Since forced external circulation evaporators are not suitable for high production loads, should we use a central circulation tube evaporator or a natural external circulation evaporator? Which type is more conducive to energy savings, easier operation, and produces better crystallized particles from the slurry after evaporation? In other words, which evaporator design is more reasonable? I would appreciate your advice, thank you!
Most of the time, forced circulation evaporation is used; the load is higher, but the efficiency is better. Each method has its advantages and disadvantages. If forced circulation evaporators cannot be used, then a central circulation tube should be chosen – it’s easy to manufacture, has a simple structure, requires less investment, and offers greater operational flexibility. When constructing it, it’s necessary to add manholes or pipe fittings at the bottom to facilitate maintenance; in short, elements that make maintenance easier should be included.
For relatively low production volumes, a central circulation tube type, that is, the standard type, is sufficient; it requires less investment and occupies less space, making it suitable for small-scale production