Evaporator Master Beinuo Machinery
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DTB Crystallizer
DTB crystallizer is a kind of internal circulation crystallizer. Its typical characteristics are that the crystallizer has a stirrer, a flow guide cylinder and a baffle plate, as well as a matching heat exchange device and a fine crystal elimination device.
The crystal slurry liquid rises from the bottom of the inner deflector through the built-in agitator to the liquid level and contacts the area with high supersaturation to consume the supersaturation. Then it descends along the annular area between the inner guide cylinder and the outer guide cylinder. At the annular gap between the mold cylinder and the outer guide cylinder, the crystal slurry and the clarifying liquid are separated, and the crystal slurry continues to circulate downward. The clarified liquid enters the fine crystal eliminator from the outer ring gap to dissolve excessive fine crystal nuclei, which ensures that the crystal nuclei will not be excessive and the crystal size distribution is more uniform.
During evaporative crystallization, the rate of supersaturation depends on the evaporation rate, that is, the evaporation intensity of the equipment. The higher the evaporation intensity, the faster the supersaturation rate, and the easier it is to form excessive supersaturation. The elimination of supersaturation mainly depends on spontaneous nucleation and crystal growth. If there is enough crystal surface and fast growth rate in the crystallizer, the supersaturation generated by evaporation can all grow on the crystal surface, and the supersaturation of the solution will not exceed the maximum supersaturation of the solution so that the solute can eliminate supersaturation by nucleation process, so that a large number of crystal nuclei will not be produced.
If the crystal surface in the solution is insufficient, the growth of the crystal is not enough to eliminate the supersaturation caused by evaporation, so that the supersaturation of the solution is too high, and in the unstable region, the supersaturation of the solution will be consumed by the spontaneous nucleation process, thus forming a large number of fine particles. Therefore, it is necessary to control the evaporation intensity in the process of evaporation crystallization, so that the supersaturation of the crystallization system is always in the crystallization metastable zone, so as to ensure that the designed evaporation crystallization equipment can produce products that meet the requirements of the design task.
The longer the residence time of the crystal in the growing region, the longer the crystal growth time, the larger the crystal size. The formation of large grain size crystals must have sufficient growth time. We will design the appropriate DTB crystallizer according to the crystal growth rate and the particle size required in the design task on the basis of accurate crystal dynamics data.
On the basis of the original DTB crystallizer, a lot of improvements have been made to make it more in line with the actual production conditions.
Operation method: continuous crystallization, intermittent crystallization
Crystallization method: water cooling crystallization, evaporation crystallization, freezing crystallization, vacuum crystallization
OSLO Crystallizer - Improved:
OSLO Crystallizer is a fluidized bed crystallizer with particle size classification. Its typical characteristics are supersaturated liquid along the downcomer pipe in the middle of the crystallizer directly to the bottom, and then turn to rise, rise in the process of supersaturated liquid through the fluidized bed, and suspended crystal nucleus full contact, so that the crystal nucleus can grow, supersaturation can be eliminated. OSLO Crystallizer is capable of producing crystals of large size.
During evaporative crystallization, the rate of supersaturation depends on the evaporation rate, that is, the evaporation intensity of the equipment. The higher the evaporation intensity, the faster the supersaturation rate, and the easier it is to form excessive supersaturation. The elimination of supersaturation mainly depends on spontaneous nucleation and crystal growth. If there is enough crystal surface and fast growth rate in the crystallizer, the supersaturation generated by evaporation can all grow on the crystal surface, and the supersaturation of the solution will not exceed the supersaturation of the solution, so that the solute will eliminate supersaturation by nucleation process, so that a large number of crystal nuclei will not be produced.
If the crystal surface in the solution is insufficient, the growth of the crystal is not enough to eliminate the supersaturation caused by evaporation, so that the supersaturation of the solution is too high, and in the unstable region, the supersaturation of the solution will be consumed by the spontaneous nucleation process, thus forming a large number of fine particles. Therefore, it is necessary to control the evaporation intensity in the process of evaporation crystallization, so that the supersaturation of the crystallization system is always in the crystallization metastable zone, so as to ensure that the designed evaporation crystallization equipment can produce products that meet the requirements of the design task.
The longer the residence time of the crystal in the growing region, the longer the crystal growth time, the larger the crystal size.
The formation of large grain size crystals must have sufficient growth time. The OSLO crystallizer will be designed according to the crystal growth rate and the particle size required in the design task, based on accurate crystal dynamics data.
On the basis of the original OSLO, a lot of improvements have been made to the crystallizer to make it more in line with the actual production conditions.
Operation method: continuous crystallization, intermittent crystallization
Crystallization method: water cooling crystallization, evaporation crystallization, freezing crystallization, vacuum crystallization
FC Crystallizer:
FC crystallizer is also called forced circulation crystallizer, also called growth crystallizer. The crystallizing apparatus has the characteristics of simple structure and easy operation. The region where the crystals grow is at the lower end of the crystal separator. The bottom of the crystallizer is generally equipped with a crystal panning device. When the mold is redesigned, it is necessary to choose the appropriate circulation feed mode to avoid crystal breakage or wear the wall, to consider the anti-short circuit measures of the circulation liquid, and enough growth space of the crystal. FC crystallizer can be combined with MVR technology to form MVR forced circulation evaporation crystallizer, which has superior energy-saving effect and good utilization value for reducing production cost in production environment.
This crystallizer is generally used for occasions where the crystal size is not high, or where the crystal is easy to grow.
For example, the evaporation crystallization of sodium chloride, ammonium chloride, sodium sulfate, ammonium sulfate, etc.
We will design and manufacture the equipment you need according to your needs. Safe and reliable!
Welcome to contact us for more details.
| MVR Evaporator | SS304/SS316l/2205 /Titanium | 500L 1t/2t/3t/5t/10t/50t Customized | Automatic/Semi-Automatic |
| TVR Evaporator | |||
| Falling Film Evaporator | |||
| Rising Film Evaporator | |||
| Climbing Film Evaporator | |||
| Single Effect Evaporator | |||
| Double Effect Evaporator | |||
| Triple Effect Evaporator | |||
| Multiple Effect Evaporator | |||
| Forced Circulated Evaporator | |||
| External Circulated Evaporator | |||
| Continuous Crystallizer | |||
| Vacuum Crystallizer | |||
| Forced Circulation Crystallizer | |||
| Draft Tube Baffle Crystallizer | |||
| Evaporator Crystallizer | |||
| Oslo Crystallizer |
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