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High-Efficiency Crystallizer V-CT-SF-500 - 22 L/h Evaporation Power from Leading China Suppliers and Factory
Vacuum Crystallization Technology
The crystallization chamber is negative pressure at -95 to -97kPa under vacuum condition, raw material is automatically sucked into chamber under negative pressure. Meanwhile, the heat pump system will makes heat exchange device into evaporation and condensation two parts, the chamber is equipped with a scrapper and jacketed layer, continuous stirring of material and the jacketed surface going on evaporation. The water evaporates into steam and flows up to condensation chamber and becomes distilled water. Distilled water flows to condensation vessel and discharges automatically. Solid material will be discharged automatically by scraper at last.
Low temperature evaporation technology should be an important means to solve the problem of energy consumption at this stage, it integrates a variety of technologies in a body to strengthen the evaporation conditions so that the evaporation can be completed at a relatively low cost.
The Principle of Low-Temperature Evaporation
The principle of low-temperature evaporation process is actually not complicated, in a word, the use of dry air to blow away the water.
The process is as follows: First, the solution is heated to a certain temperature, and then the solution is passed through the evaporator from top to bottom. The dry air is fully in contact with the solution, and in this process, the dry air reaches a saturated state and becomes wet air flowing out from the top of the tower, and the concentration of the solution itself is increased.
System Operational Flow
Stage 1
Preheating
This step is automatic. After the original bucket reaches the medium level, the pump runs to produce a vacuum, the evaporator automatically enters the water, and the compressor runs to generate heat to heat the wastewater in the evaporation tank. In the vacuum state, the wastewater temperature rises to about 30 °C, the wastewater begins to evaporate, and the preheating is completed.
Stage 2
Evaporation & Concentration
Evaporation temperature is set at 35-40℃. The compressor compresses the refrigerant to produce heat, and the water evaporates rapidly. At the same time, the refrigerant through the expansion valve after gasification absorbs heat for refrigeration. Vapor rises into the liquid, liquefying into the storage tank. The refrigerant absorbs heat, and through the compressor compression heating, reheats the waste water. If bubbles rise, the sensor detects and defoamer is automatically added.
Stage 3
Discharge
The concentrated liquid is discharged after a cycle is completed (the cycle time can be set). After one evaporation cycle is completed, the compression pump stops working, the concentrate pipeline pneumatic valve is opened, the evaporation tank is pressurized, and the concentrate hydraulic pressure is put into the concentrate tank.
Energy Efficiency & Technology Integration
After understanding the principle of low temperature evaporation technology and equipment conditions, in order to reduce energy consumption and improve heat utilization in the industrial production process to achieve the ideal operating cost requirements, The combination of the previously mentioned multi-effect evaporation technology and mechanical steam recompression technology and vacuum technology has derived the commonly used low-temperature multi-effect evaporation equipment and MVR evaporation equipment at this stage (please check the difference between the two technologies), which greatly reduces the operating cost of tons of evaporation (taking water as an example, generally ranging from 40-70 yuan).
If the operating temperature of the low-temperature evaporation equipment is controlled at 50-60 ° C, the heat utilization efficiency will increase, the same heat source in the case of 80-95 ° C evaporation can obtain more evaporation, while as the heat source of the evaporator can also choose some low-grade industrial waste heat, compared to the use of fresh steam evaporation, on the one hand to achieve multi-level utilization of energy, On the other hand, it achieves the purpose of energy saving and carbon reduction. Even if the energy consumption of the blower and the power consumption of the waste water cycle are calculated, the operating cost of the low-temperature evaporation equipment using a low-grade heat source can be well controlled at 30 yuan/ton of water. In addition, due to the low operating temperature of the equipment, the high-temperature evaporation has great advantages in the selection of processing materials, and even some plastic materials are selected instead of metal to further optimize the processing cost.
If it is not special evaporation requirements, the advantages of low-temperature evaporation technology are unmatched by traditional evaporation technology in terms of production safety, cost input, operating costs, service life, maintenance, equipment footprint, equipment structure, auxiliary equipment, etc.
Product Gallery
Frequently Asked Questions
How does the crystallization chamber operate under vacuum conditions?
The crystallization chamber maintains a negative pressure of -95 to -97kPa. Under this vacuum condition, raw materials are automatically sucked into the chamber. Heat exchange combined with continuous jacketed layer evaporation and scraper stirring processes the material, separating distilled water from the solids.
What is the basic principle of low-temperature evaporation?
The process heats the solution to a specific temperature and passes it through the evaporator from top to bottom. Dry air is brought into full contact with the solution, absorbing moisture to become wet air while increasing the concentration of the solution.
How are the different stages of the evaporation system controlled?
The system runs automatically through three main stages: automatic preheating (heating wastewater to 30°C under vacuum), evaporation and concentration (maintaining 35-40°C with automated defoaming), and concentrate discharge (pressurizing the tank to discharge liquid after a set cycle).
How does combining MVR and vacuum technologies reduce operating costs?
Integrating multi-effect evaporation with mechanical steam recompression (MVR) and vacuum technology optimizes heat utilization. This combination drops the operating cost to 40-70 yuan per ton, and potentially down to 30 yuan per ton when utilizing low-grade industrial waste heat.
What are the main advantages of low-temperature evaporation over traditional methods?
Unless special evaporation requirements exist, low-temperature evaporation excels in production safety, cost input, operating costs, service life, simple maintenance, smaller footprint, and flexible equipment material selection (such as using plastic instead of metal).






