Is the energy consumption for evaporation crystallization higher than that for cooling crystallization?

Reply 1# *aoyujian: Crystallization is a method for separating mixtures. Evaporation crystallization is suitable for separating all solid solutes from their solutions, or for purifying substances whose solubility changes little with temperature, from mixed solutions containing two or more solutes; for example, it can be used to purify sodium chloride from a mixture of sodium chloride and potassium nitrate (with a small amount of potassium nitrate). Cooling crystallization is mainly used when a mixed solution contains two or more solutes, and one of them has a significant change in solubility with temperature – in such cases, cooling crystallization is employed to purify that substance. For example, it can be used to purify potassium nitrate from a mixture of sodium chloride and potassium nitrate (with a small amount of sodium chloride). The energy consumption associated with these methods cannot be compared.

Thank you. I would also like to know what the main equipment used in evaporation crystallization is

Evaporation crystallization requires heat sources such as steam, while cooling crystallization can make use of recycled cooling water; therefore, the energy consumption is different in these two cases. However, there are significant differences between the two processes, with the key lying in the treatment of the remaining substances after crystallization.

The waste liquid mainly contains sodium sulfate; after crystallization, the remaining substance is primarily water, making it easy to handle

What material is used for sodium sulfate evaporation crystallizers?

It’s not a little bit high at all,,,

Stainless steel will do; for sodium chloride, titanium is required