Single Effect MVR Evaporator

Single effect MVR evaporator is to make the secondary steam generated in the evaporation system work through the compressor, increase the steam enthalpy, circulate for heating and evaporation, make full use of the waste heat of the secondary steam and condensed water in the system, and achieve outstanding energy-saving effect. Without fresh steam, more than 90% of condensed water, 80% of human resources, and 60% of space can be saved.

MVR evaporator uses secondary steam compressed by compressor. Each domestic compressor can provide a temperature rise of 20℃, and each imported compressor can provide a temperature rise of 9℃. Therefore, the requirement of the evaporator system for inlet water is that the boiling point is as low as possible below 15℃ to achieve the purpose of energy-saving evaporation.

Single-effect evaporation: its raw steam is only used once in the system.

The difference between MVR and multi-effect evaporator is that the secondary steam has been circulated in the system, so it can be considered that its energy is not wasted.

The energy consumed by the system is the energy consumed by the compressor to raise the temperature from 119℃ to 130℃. MVR energy saving is reflected in that it only needs to input 16KJ (tons of water) to make the secondary steam from useless to useful.

High heat transfer coefficient: This structure of evaporator has a variable flow field, which makes it very easy for the feed liquid to reach a vigorous turbulent state, and its heat transfer coefficient is 2-3 times that of the shell and tube type;

Not easy to clog: The feed liquid forms a turbulent flow on the heat exchange surface, which can flush the heat exchange surface, make the scale body attached to the heat exchange surface fall off, and delay the scaling cycle;

Very smooth surface: The processing technology used makes the surface roughness of the heat exchange surface controlled at a very low value, making it difficult for pollutants to adhere. The scaling rate of this type of heat exchanger is only 1/5 of that of the shell and tube heat exchanger;

Easy to clean and maintain: The plate structure is adopted, and the heat exchange surface can be easily disassembled, and any contaminated or damaged heat exchange surface can be easily replaced.

Applicable to: evaporation and crystallization of various inorganic salts, evaporation of liquid with high hardness, evaporation and concentration of garbage leachate, liquid concentration in food, fermentation, and pharmaceutical industries, and concentration of heat-sensitive materials.

MVR evaporator product composition:

Preheater: In most cases, the solution to be evaporated needs to be preheated before entering the evaporator.

Evaporator: The solution to be evaporated is heated with the heat source steam in the evaporator to produce evaporation. Different types of evaporators are selected according to the properties of different solutions.

Separator: Used for separation of steam and liquid. Different separators can be selected according to the properties of different solutions. Generally, there are centrifugal separators, gravity separators or separators with special structures.

Various pumps: Transport the solution to be evaporated and the concentrated solution. Different types of pumps are selected according to the different properties of the solution. Generally, centrifugal pumps, volumetric pumps, and screw pumps can be used.

Compressor: Provide evaporation heat source by compressing secondary steam to increase the thermal enthalpy of secondary steam. A variety of compressors can be selected according to the requirements of different flow rates and compression ratios. For the case of increased pressure rise, multi-stage compressors can be used in series.

Control system: MVR evaporation system control center, through the adjustment of motor speed, valve, flow meter, temperature, pressure control, to achieve automatic evaporation, cleaning, shutdown and other operations. Automatic alarm, automatic protection system from damage, maintain the dynamic balance of the system.

Cleaning system: Different solutions may cause scaling after evaporation for a period of time. Generally speaking, more than 99% of scaling is removed by adding chemical solvents. Generally, CIP in-situ cleaning or dismantling cleaning can be used.