Description

Overview

The MVR (Mechanical Vapor Recompression) distillation system compresses the low-temperature vapor from the top of the distillation column using a steam compressor, increasing its temperature and pressure. The compressed vapor then enters the reboiler, where it condenses and transfers heat to the bottom liquid, thus maintaining the energy balance of the distillation process solely through mechanical compression.

By consuming a small amount of electrical energy, the system elevates the thermal value of the overhead vapor and efficiently recovers its latent heat. This significantly reduces the need for additional heat at the column bottom and minimizes the cooling load at the top, achieving a highly energy-efficient operation.

Working Principle

The working medium circulates in a closed-loop system, continuously undergoing phase transitions between liquid and vapor states.

During these phase changes, energy is effectively exchanged:

• Heat released during condensation is used to heat and evaporate the feed solution.

• Heat absorbed during evaporation is recovered from the condensation of secondary vapor generated in the process.

This internal heat integration enables efficient feed concentration, solvent evaporation, and solvent recovery with minimal external energy input.

Key Features

• Minimal Steam Requirement

Only a small amount of industrial steam or electric heating is required during startup. Once stable operation is achieved, no additional steam input is needed, and evaporation is maintained primarily through electrical energy consumption.

• Low-Temperature Operation

The system operates at relatively low temperatures, typically in the range of 40–65°C, which can be adjusted according to feed characteristics. The heat source temperature generally remains below 95°C, making it suitable for heat-sensitive materials.

• Fully Automated Control

The system is equipped with a PLC-based automatic control system, enabling automated feeding and discharge, real-time density monitoring, temperature regulation, vacuum control, and other operational parameters. This ensures low labor intensity, stable operation, and high reliability.

• Customizable

System specifications and configurations can be customized according to user requirements and process conditions.

Application Fields

MVR distillation systems are widely used in:

   • Pharmaceuticals

   • Food and beverage

   • Fine chemicals

   • Biotechnology

   • Environmental protection

They are especially suited for organic solvent recovery, particularly flammable and volatile solvents such as: Methanol, Ethanol, Ethyl acetate, Acetone, N-hexane and etc.

In addition, the system can also be applied to evaporation and concentration of aqueous solutions.

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