OSLO crystallization evaporator is a typical crystallizer commonly used in the salt industry. Due to the heating of the external heater to the circulating liquid material, the liquid enters the vacuum flash chamber and evaporates to a supersaturated state, and then went to the suspension bed through the vertical tube to allow the crystal to grow. Its main feature is that the area where super-saturation occurs and the area where the crystal grow are respectively set at two places in the crystallizer, and the crystals are fluidized and suspended in the circulating mother liquid flow, providing good conditions for crystal growth. And due to the special structure of the OSLO crystallizer, the larger particles contact the supersaturated solution first and grow preferentially, followed by the solution with smaller particle size. The products produced in this way have the advantages of larger particles and narrower range of particle size distribution, as well as the advantages of continuous operation and low labor intensity.
For the OSLO cooling crystallizer, the saturated liquid is cooled by an external cooler to reach a supersaturated state, and the liquid went to the suspension bed through a vertical pipe to allow the crystal to grow. Due to the special structure of the OSLO crystallizer, the larger particles contact the supersaturated solution first and grow preferentially. The technological process: A tubular cooler is added on the circulating pipeline, and the mother liquor circulates upwards through the tubular pipe one-way. The thick liquid is added before the circulating pump, mixed with the circulating mother liquor and cooled by the cooler to reach a supersaturated state, and then enters the crystallizer for fluidization suspension to produce large and uniform crystals with large and uniform particle size. The product (crystal) suspension is led out from the cone bottom of the crystallizer. And due to the unique structure of OSLO, the products produced have the advantages of larger particles and narrower range of particle size distribution, as well as the advantages of continuous operation and low labor intensity.
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