Single Stage Vacuum Cooling Crystallization System
Single stage Vacuum Cooling Crystallization System
The single effect vacuum cooling and continuous crystallizing and separating system is widely used in industries such as chemistry, medicine, pesticide, etc., where bio-chemical enterprises manufacturing sodium carbonate decahydrate, sodium citrate, sodium ohosphate tribasic, copper sulfate and heptahydrate magnesium sulfate use heavy crystals to purify their raw materials and situations where special requirements on the distribution of the crystal grains are in place, crystal grains rather large in diameter and mass can be extracted from salts with multiple crystal hydrates.
The single effect vacuum cooling and continuous crystallizing and separating system is a highly efficient cooling, refrigerating and crystallization device which controls material temperate through PLC. Its unique structure and working mechanism decide that it is highly efficient in heat transmission, simple in configuration, easy in operation and has good operation environment, etc., and is widely used in the crystallization process of such industry as chemistry, medicine, and pesticide etc Corresponding auxiliary equipment can be provided to users according to their demand.
Through circular vacuum cooling, the temperature of the solvent is quickly lowered to the point where the solvent saturates rapidly and precipitates crystal grains which are then discharged into the cooling crystalizer where the temperature is lowered to allow even growth of the crystals, which then in turn are let into the setting tank for further development; the control of crystallization temperature and time of the materials as well as the agitator speed and cooling area are the key factors deciding the size, appearance and crystal grains. This device has a dedicated crystallizer, the body of which is a conical container, in which the material liquid is placed and boiled violently through flash evaporation and the vapor of the solvent is discharged from the top pf the container into an injector or other vacuum devices. Through circulation, the temperature of the solvent is evenly distributed and the crystal grains are suspended in the fluid, which through DTB or OSLO cooling and crystallization settle the bottom of the cone after thorough growth. The mixture of the crystals and mother liquid are let into the magma through the material discharging valve and are filtered before the crystal grains are separated with the mother liquid. The major strength of the crystallizing device are its simple structure and insulated evaporation and cooling of its solution system, as well as the small heat transmitting surface which helps avoid gathering of the crystals on the surface. The system can also easily realize automatic control to cope with the requirement for the crystallization of various materials.
1. It is a crystallizing machine that can control the vacuum degree and realize rapid crystallization.
2. It combines vacuum evaporation and cooling with fluid dynamics.
3. It realizes high efficient internal and external circulation and avoid secondary crystallization.
4. It greatly reduces the occurrence of internal wall scabs.
5. It can satisfy the GMP requirement of the medicine producing factories.
6. The magma is uniformly supersaturating and the crystal grains evenly distributed, resulting in high efficiency.
7. Low energy consumption.
8. It is able to be used in continuous production.
9. It can be used in diversified evaporation, cooling and crystallization through refrigeration.
10. It is low in agitator speed, easily regulated, highly adjustable, reliable in operation and free from malfunctions.
Main Spare Parts:
The device mainly consists of a vacuum crystallizer, a shell-and-tube condenser, an external crystallizer, a setting tank, a turbo separating thickener, a centrifuge, a conveyor, a fluid bed, a packager, a wrapper, a vacuum pump, a material pump, a circulating pump, a compulsory circulating pump, an electric motor, a fan, a defoaming device, an electric control box, a console as well as pipelines and valves, etc.
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