DTB Crystallizer

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  • DTB Vacuum Crystallizer

    DTB type crystallizer is a typical internal circulation crystallizer. With following advantages:

    • Inner guide tube lead designed inside the crystallizer form the circulation channel;
    • With lower pressure head, the crystallizer can realize much better inner circulation
    • With Annular baffle, crystallization circulation area and deposition area are separate and not interfere with each other;
    • DTB crystallizer adopts special design paddle, and the speed is adjustable;
    • The supersaturation is produced on the liquid surface, the circulating slurry can quickly eliminate supersaturation;
    • good performance, high production capacity and not easy to Scaling

    Application:

    • suitable for cooling crystallization of materials with steep solubility curve, such as potassium chloride, ammonium chloride, nitrate, imino two acetonitrile, amino acid, etc.
    • Can be applied to evaporation, direct contact freezing, and reaction crystallization etc.

    DTB cooling crystallizer

    The general features of DTB cooling crystallizer as follows:

    • Same as DTB Vacuum crystallizer: with Annular baffle, crystallization circulation area and deposition area are separate and not interfere with each other;
    • Different from DTB Vacuum crystallizer: Supersaturation occurs in an external heat exchanger. Supersaturation is the control factor of the system, which is realized by circulating pump. Therefore, the DTB cooling crystallizer does not need agitating.
    • The internal circulation flux of the crystallizer includes the external circulation flux and additional cyclic flux produced by the venturi effect. Therefore, the supersaturation can be eliminated fully.
    • It is not convenient to wash the external cooler, so this type crystallizer is not used frequently.

    Application:

    • Suitable for cooling crystallization of materials with steep solubility curve, such as potassium chloride, ammonium chloride, nitrate, imino two acetonitrile, amino acid, etc.;
    • Can be used for reactive crystallization, in which the external heat exchanger is used to remove the reaction heat or to supplement the heat to the reaction system to maintain a certain reaction temperature.

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