MED

MED multi-effect evaporator connects multiple evaporators in series; the secondary steam generated in the previous effect serves as heating steam for the next effect, repeatedly reusing latent heat stage by stage, and offers stable economics where steam resources are sufficient or low-cost heat sources are available.

Process Principle

• Pressure and boiling point decrease successively in each effect, and the secondary steam from the previous effect serves as the heat source for the next effect.
• Latent heat is reused multiple times, and specific steam consumption decreases as the number of effects increases.
• Steam from the final effect enters the condenser, where cooling water removes the heat and maintains system vacuum.

Product Features

• Latent heat is reused stage by stage, and steam economy improves as the number of effects increases.
• Steam is used as the energy source, making it suitable for plant sites with captive boilers or waste-heat steam.
• Highly adaptable to materials and can handle higher-viscosity and crystallization-prone feed liquids.
• The equipment has a mature structure, stable operation, and relatively standard maintenance requirements.

Application Industries

• Concentration and crystallization of feed liquids in the chemical, salt, and sugar industries.
• Concentration and volume reduction of high-salinity wastewater and ZLD pretreatment.
• Centralized treatment projects in industrial parks with available waste-heat steam.
• Seawater desalination and brackish water desalination.

Specifications and Models

The data in the table are common ranges for similar equipment and are for selection reference only; specific specifications, models, materials, connections, and control methods must be confirmed during the selection stage based on water quality, treatment scale, and site conditions.