MVR Mechanical Vapor Recompression Evaporator

01. MVR energy-saving evaporator technology is currently the most advanced evaporator technology, requiring only a minimal amount of live steam (a small amount is needed during startup, and almost no live steam is required during normal operation), significantly reducing operational costs for enterprises and minimizing environmental pollution.

02. Due to the use of a compressor to provide the heat source, the temperature difference is much smaller compared to traditional evaporators, enabling gentle evaporation, greatly improving product quality, and reducing scaling.

03. No condenser or only a very small condenser area is required. The structure and process are very simple, with fully automated operation, continuous running, and high safety and reliability.

04. The equipment is equipped with built-in CIP cleaning pipelines, enabling in-place cleaning. The entire system is easy to operate and has no dead corners.

05. This evaporator operates at low temperatures (evaporation temperature 50°C–100°C) without foam generation. The material liquid is uniform, with no material loss, minimal scaling, and the least thermal denaturation of the material.

06. The installation space required for an MVR evaporator is about twice that of a conventional multi-effect evaporator, and the equipment investment is higher. However, the operating costs are much lower than those of conventional multi-effect evaporators.

07. To avoid operational errors or malfunctions caused by incorrect operation, an automated control system is essential for protecting the equipment.

08. Traditional multi-effect evaporators use fresh steam as the energy source. For example, a five-effect evaporator typically consumes 0.23 tons of fresh steam to evaporate one ton of water. In contrast, MVR mechanical vapor compression evaporators consume electricity, typically using 15–27 kWh to evaporate one ton of water. For materials with a low boiling point rise, the electricity consumption can be as low as 20 kWh per ton of water. The extent of energy savings depends closely on the local price of fresh steam and electricity. For instance, if steam costs 180 RMB/ton and electricity is 0.7 RMB/kWh, compared to a five-effect evaporator, the energy cost saved per ton of water evaporated is 0.23*180 - 20*0.7 = 27.4 RMB. With an evaporation capacity of 100 tons, operating 24 hours a day for 330 days a year, the annual energy savings would be 27.4*100*24*330 = 21,700,800 RMB. MVR evaporators save over 60% more energy than five-effect evaporators.

09. The price of an MVR mechanical vapor compression evaporator is about twice that of a multi-effect evaporator. For new projects, the additional investment for an MVR can generally be recovered within 300 operating days. For energy-saving retrofit projects where an MVR replaces an existing multi-effect evaporator, the investment can typically be recovered within 500 operating days.

10. In special regions where steam costs are very low and electricity prices are very high, the economic advantages of MVR mechanical vapor compression evaporators are not significant, and their use is not recommended.

Common Models and Specifications: NMVR-XX

XX - Water evaporation capacity (t/h): Minimum 0.2, Maximum 600, customized according to customer requirements.

Scope of Application:

Suitable for evaporation, concentration, and crystallization of various materials, especially products with a low boiling point rise (BPR) or dilute materials that are easy to evaporate.