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  • OSLO / DTB / FC type crystallizer
  • OSLO / DTB / FC type crystallizer
  • OSLO / DTB / FC type crystallizer

OSLO / DTB / FC type crystallizer

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Overview:OSLO moldOSLO Oslo type crystallizer, which was designed by FJ Jeremiasson of the European OSLO Crystallization Company in 1924, is named after the original design company in the Norwegian city of Oslo, also known as the crystal type, the boiling layer typ…
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OSLO mold

OSLO Oslo type crystallizer, which was designed by FJ Jeremiasson of the European OSLO Crystallization Company in 1924, is named after the original design company in the Norwegian city of Oslo, also known as the crystal type, the boiling layer type. The most important feature of the Oslo type crystallizer is that the nuclei can be grown in the boiling layer without being limited by the residence time. It can crystallize more than the FC type and DTB type larger particles. The maximum crystal grain size can be above 3.0mm. It consists of heating chamber, condensed water tank, evaporation crystallization chamber, horizontal axial flow pump, circulating pipe composition; evaporation crystallization chamber by the central circulation pipe (boiling layer), evaporation chamber, breeding room composed. The size of the crystal chamber should be designed according to the characteristics of the material and the grain size requirements. The larger the particle size requirements, the longer the crystallization time, the larger the volume of the crystal chamber, the longer the crystallization time is 6-10 hours, or even longer, the volume of the crystal chamber is 6-10 times the feed volume <m³ / h>.

 


DTB type mold
DTB mold, turbulence mold with flow tube and baffle, is a typical modern industrial continuous mold, the most widely used, whether it is vacuum evaporation, or vacuum flashing cooling, it is the best continuous Mold. It consists of heating chamber, evaporation crystallization chamber, circulating pump, vertical axial flow pump, crystallization zone, evaporation zone, mother liquor area (baffle) composition. Crystal size is larger than the FC type, particle size 0.2-1.2mm, particles uniform, smooth surface, different products, crystal characteristics are not the same, but within a certain range, the size of the size can be adjusted, which is the largest DTB mold The characteristics of the.

 

DTB mold structure design is more complex. Vacuum evaporation with heating chamber and condensate bucket. Vacuum flashing only evaporate the crystallization chamber, the design should be evaporation zone, crystallization zone, the mother liquor area of different settlement speed to design the settlement area, thus calculating the diameter of the mold. And the settling velocity is determined by the characteristics of the crystalline material. In general, the flow rate within the flow tube ≤ 1m / s, evaporation chamber settling speed ≤ 0.2m / s, crystallization zone settling speed ≤ 0.1m / s, mother liquor area ≤ 0.05m / s. Vertical axial flow pump design is the key to DTB mold, it is a large flow, low head, low speed, impeller diameter large axial pump, often the size of the crystal grain size and its design is closely related.


FC type mold
FC type mold, also known as external heating forced circulation evaporative mold, which consists of heating chamber, evaporation crystallization chamber, forced circulation horizontal axial flow pump, upper and lower circulation pipe composition. Crystal size is not large, about 0.15 - 0.3mm. It is characterized by simple structure, easy to operate. Designers in the structural design should pay attention to the location of the evaporation of the crystallization chamber than the height of the heating chamber 4-6m (evaporation of the crystallization chamber to the heating chamber on the tube board distance), to ensure that the heat transfer tube on the nozzle is not Boiling, heat transfer tube will not have crystal precipitation, will not produce blocking phenomenon. Followed by the circulating pipe flow rate is less than 1m / s, the next circulating tube flow rate can be 1.3m-1.5m / s design. The purpose is to heat the solution into the crystallization chamber, the impact of the vacuum, the circulating tube will have bubbles generated, in order to prevent the auricle, diameter slightly larger than the next cycle tube.

  • DTB type mold
  • FC type mold
  • OSLO mold
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  • OSLO / DTB / FC type crystallizer
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