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Structure and Principle
Oslo crystallizer has a structure that the evaporation chamber is separated from crystallization tank. The mother liquor which is clarified at top clarification gone of crystallization tank extracted from the small crystallization zone is concentrated by evaporating in evaporation chamber after passing heat exchanger.
A supersaturated liquid concentrated in evaporation chamber go down through tail pipe then is supplied to bottom of crystallization tank. The liquid penetrate fluidized crystal bed and crystals grow by contacting and desupersaturation of liquid.
The OSLO Crystallizer consists of five basic components:
The crystallizer vessel：Provides most of the active volume dictated by the residence time requirements and enables a proper disengagement of process vapors.
The baffle：Controls the crystal population by separating fine crystals (to be dissolved by heating or dilution) from coarse crystals (to further growth).
The circulation pump：Provides sufficient circulation rate to operate the crystallizer under optimal supersaturation and superheating conditions. Typically, axial-flow propeller pumps are used.
The heat exchanger：Supplies the required thermal energy to the crystallizer for the desired evaporation rate.
The fluidized bed：Bed of crystals fluidized by the circulating brine releasing its supersaturation to the suspended crystals.
Applications：
Ammonium sulfate, Sodium cyanide, Nickel sulfate, Sodium chlorate, Nickel chloride, Copper sulfate
Advantages:
Operating costs are much lower compared to other types of crystallizers.
Allows continuous operation with low maintenance requirements.
Permits long production cycles between washing periods.
As a result, Oslo-type crystallizers are an economical and efficient choice for applications that require the production of large-sized crystals.
Structure and Principle
Oslo crystallizer has a structure that the evaporation chamber is separated from crystallization tank. The mother liquor which is clarified at top clarification gone of crystallization tank extracted from the small crystallization zone is concentrated by evaporating in evaporation chamber after passing heat exchanger.
A supersaturated liquid concentrated in evaporation chamber go down through tail pipe then is supplied to bottom of crystallization tank. The liquid penetrate fluidized crystal bed and crystals grow by contacting and desupersaturation of liquid.
The OSLO Crystallizer consists of five basic components:
The crystallizer vessel：Provides most of the active volume dictated by the residence time requirements and enables a proper disengagement of process vapors.
The baffle：Controls the crystal population by separating fine crystals (to be dissolved by heating or dilution) from coarse crystals (to further growth).
The circulation pump：Provides sufficient circulation rate to operate the crystallizer under optimal supersaturation and superheating conditions. Typically, axial-flow propeller pumps are used.
The heat exchanger：Supplies the required thermal energy to the crystallizer for the desired evaporation rate.
The fluidized bed：Bed of crystals fluidized by the circulating brine releasing its supersaturation to the suspended crystals.
Applications：
Ammonium sulfate, Sodium cyanide, Nickel sulfate, Sodium chlorate, Nickel chloride, Copper sulfate
Advantages:
Operating costs are much lower compared to other types of crystallizers.
Allows continuous operation with low maintenance requirements.
Permits long production cycles between washing periods.
As a result, Oslo-type crystallizers are an economical and efficient choice for applications that require the production of large-sized crystals.
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