Vacuum continuous cooling crystallization system
Product introduction:
Vacuum continuous cooling crystallization system is widely used in chemical, pharmaceutical, pesticide and other industries, such as oxalic acid, succinic acid,
It is necessary for biochemical enterprises such as sodium citrate and magnesium sulfate heptahydrate to have special requirements for crystallization temperature, particle size and grain distribution.
The traditional crystallization industry generally adopts the crystallization process of reactor intermittent crystallization, and the crystallization process is an important part of the chemical operation unit. The size of the product crystal size is directly related to the product quality, purity and final sales price. The vacuum continuous cooling crystallization process developed by our company is a technical leader in the industry, which can realize high-tech problems such as adjustable crystallizing particle size, make the product particle size more uniform, purity higher, and automation higher. While reducing the investment cost and production and operation cost, the product with stable quality and high quality has stronger market competitiveness.
working principle:
In the vacuum state, the hot saturated solution is cooled and crystallized in adiabatic vacuum, and the hot solution enters the crystallizer. When the hot solution reaches the liquid level of the separation chamber, the solution is flashed, and the evaporated part of the solvent absorbs heat, and the solution is cooled to produce supersaturation and crystallized. In essence, the solute can be separated out in the form of crystal by reducing the temperature (especially for the substance whose solubility increases obviously with the increase of temperature).
Characteristic:
1. It has good hydrodynamic effect.
2. High efficiency internal circulation is realized without secondary crystal nucleus.
3. There is little scaling on the inner wall.
4. It is used in pharmaceutical factories to meet GMP requirements.
5. The supersaturation of the slurry is uniform, the particle size distribution is good, and the high efficiency is achieved.
6. Low energy consumption
7. It can realize continuous production operation.
8. It can be used for cooling crystallization or vacuum evaporation cooling crystallization.
