Thermal Vapor Recompression (TVR) Evaporator System

A Thermal Vapor Recompression (TVR) Evaporator System is an evaporation technology that reuses generated process vapor by recompressing it with high-pressure motive steam. The recompressed vapor is then reused as a heating medium, reducing the requirement for fresh steam.

In a TVR system, a portion of the vapor generated during evaporation is mixed with high-pressure motive steam inside a thermocompressor. The mixture is recompressed, increasing its pressure and temperature, and is then reused as the heating medium in the evaporator heat exchanger. This reduces fresh steam consumption.

Mazda's TVR system is designed to provide up to 50% savings in steam consumption, depending on the process and operating conditions. The actual steam savings depend on factors such as evaporation capacity, operating pressure, and system configuration.

The TVR system described by Mazda can achieve a steam economy of approximately 1.3–2.0 kg of water evaporated per kg of steam, depending on the operating configuration and process conditions.

MEE improves steam economy by reusing vapor across multiple evaporation effects. TVR uses high-pressure motive steam and a thermocompressor to recompress part of the generated vapor, while MVR uses mechanical compression to raise vapor pressure and temperature for reuse.

TVR can provide a balance between energy savings, operating simplicity, and investment cost, positioning it between conventional MEE and MVR for certain applications.

TVR can offer a lower capital cost than MVR while still providing improved steam economy. It can therefore be considered where a plant wants to reduce steam consumption without the higher investment associated with mechanical vapor recompression. The appropriate technology depends on the specific process and operating requirements.

Yes. A TVR system can be integrated with Multi Effect Evaporator (MEE) systems to further improve steam economy and energy efficiency. The combination can provide higher overall evaporation efficiency than conventional MEE alone.

The TVR system uses a thermocompressor rather than mechanical compression equipment, allowing simple operation with no moving parts in the recompression system. This contributes to low maintenance requirements and reliable operation.

Yes. Mazda's TVR systems are designed to be compact and easy to integrate with existing evaporation systems, making them suitable for plants looking to improve steam economy without necessarily replacing the complete evaporation process.

Mazda Limited designs and supplies Thermal Vapor Recompression Evaporator Systems using thermocompressor-based vapor recompression technology. Mazda's TVR systems are engineered to reduce live steam demand, improve steam economy, and provide a reliable, low-maintenance solution for industrial evaporation applications.