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Name
Multiple Stage Vacuum Cooling Crystallization System
Product Name:
Multiple stage Vacuum Cooling Crystallization System
Introduction:
The multiple effect vacuum cooling and continuous crystallizating 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 continuous refrigeration, crystallization and separation 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.
Working Principle:
Through recycling and controlling the vacuum degree, it adjusts the temperature of the saturate solvent and reduces the speed, and then crystallizes through refrigeration; 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. The body of the multi-level vacuum crystallizer is mainly a conical container, through which the magma flows proplled by the circulating pump and the steam room in the upper part of the various chambers are individually connected with the vacuum system. When the temperature of the solvent reaches under the saturation temperature, the crystal begins precipitating and the crystal grains suspending and developing and gradually flowing with the fluid. After the operation, the mixture of the crystal and mother liquid are let into the DTB cooler or cooling crystallizer through the material discharging valve and the crystal grains are cooled and crystallized again in the crystallizer; when the large temperature and grain uniformity are reached, the mixture is discharged into the magma through for settlement before being filtered to separate the crystals and 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.
Features:
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 two vacuum crystallizers, 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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