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The evaporation operation of sodium thiosulfate can be carried out using falling film evaporation or forced circulation evaporation depending on the concentration.
Crystallization can be carried out using an OLSO cooling crystallizer.
The cooling type Oslo crystallizer cooler uses an external cooler to cool the saturated liquid to supersaturation, and then enters the suspended bed through a vertical pipeline to allow the crystals to grow. Due to the special structure of the Oslo crystallizer, larger particles first come into contact with the supersaturated solution and grow preferentially.
working principle
The OLSo crystallizer is placed at two locations, one in the supersaturation zone and the other in the crystal growth zone. The crystals are fluidized and suspended in the circulating mother liquid, providing favorable conditions for crystal production and producing larger and more uniform crystals.
Performance characteristics
The crystals produced by Oslo crystallizer have large volume, uniform particles, and high production capacity. And it has the advantages of continuous operation and low labor intensity. Especially suitable for the crystallization of sodium thiosulfate, with a large circulation volume and low supersaturation of the solution, it is not easy to produce secondary crystal nuclei, which is beneficial for the crystallization operation. The Oslo crystallizer can be produced continuously, with varying yields and strong applicability. During the crystallization process, there is no problem of crystal breakage due to the circulation of clear liquid.
Adapt to materials
Suitable for materials that require cooling and crystallization, such as sodium thiosulfate.