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China MVR Evaporation Plant Suppliers | High-Efficiency Factory Solutions for Energy Savings and Flexibility
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China MVR Evaporation Plant Suppliers | High-Efficiency Factory Solutions for Energy Savings and Flexibility
Mechanical Vapor Recompression (MVR) plants are revolutionizing industries in China by providing substantial operational savings through the efficient reuse of vapors as heating mediums. These innovative systems utilize electricity for vapor compression, resulting in low energy consumption and gentle low-temperature evaporation. With high operational flexibility, MVR technology is a preferred choice among suppliers for various applications, including food processing, chemical production, and wastewater treatment. As a leading factory in this technology, we ensure our MVR solutions meet the highest standards of efficiency and performance, helping businesses in China minimize energy costs while maximizing productivity
MVR Evaporation plant delivers substantial operational cost savings in areas with an ample supply of low-cost electrical energy.
Once an MVR evaporation plant is running, little or no additional steam is required. In the MVR evaporation plant, a centrifugal fan is used to recompress the vapour to a higher pressure, resulting in a temperature rise. This means that the recompressed vapour can be used as the evaporation plant heating medium, while the condensate is ideal for preheating of the feed product.
For low boiling point increases, a single-stage compressor can be used to fulfill the requirements of the design.
For high boiling point increases, we will provide two designs: multiple-stage compressors, single stage compressors combined with multiple-effect.
The MVR evaporation plant almost doesn't use steam, but electric energy is required as the main energy source.
The power consumption of the main motor of MVR is due to the heat exchange area and the evaporating temperature of the evaporation plant. The Heat exchange area is bigger, and as a result, power consumption is lower, but the investment in equipment is increased.
Evaporating temperature is higher and as a result, power consumption is lower, but fouling in the calandria is therefore increased; Evaporating temperature is lower and as a result, power consumption is higher.
MVR can be powered by an electric motor, the rotary speed of an MVR can be controlled by a frequency converter, and the rotary speed of an MVR may control the evaporation rate and final concentration of the MVR evaporation plant.
Particular Feature
Low specific energy consumption.
Gentle evaporation of the product due to low temperature differences largely increases product quality, decreases fouling.
Short residence times of the product, as a single-effect system is most often used.
Only a small area condenser, requiring little cooling water.
High availability of the plants due to the simplicity of the process.
Excellent partial load behaviour.
Low specific operating costs.
Fields of Application
Particularly suited for the food and beverages industry (evaporation of milk, whey, sugar solutions), chemical industry (evaporation of aqueous solutions), the salt works industry (evaporation of saline solutions), and environmental protection technology (concentration of waste water).
MVR Evaporation Plant Compared with a Normal Multiple-effect Evaporation Plant
Energy consumption of concentrating water of 1 ton, per hour
0.16–0.6T
18–26Kw
For Example
Evaporation rate: 50T/h | Unit price of steam: 160RMB/T
Unit price of electric power: 0.8RMB/Kw | 8000 hours per annum.
Type
4-effect evaporation plant
MVR evaporation plant
Energy consumption
Steam: 11T/h
Electric power: 1000Kw/h
Expense of energy consumption, per annum
14,080,000 RMB
6,400,000 RMB
Economizing expense, per annum
Zero
7,680,000 RMB
Diagram Legend
1. Evaporator
2. Condenser
3. Plate heat exchanger
4. MVR
5. Condensate Tank
A. Liquor
B. Product
C. Condensate
D. Fresh steam
E. Cooling water
F. Deaeration
Type Selection Criteria for Evaporation Plants
When we design evaporation plants, various requirements must be considered. These determine the type of design, arrangement, the resulting process, the cost of investments, and running expenses.
The Most Important Requirements
Capacity and Operation Data
Name of Product
Feeding concentration (dry materials %)
Feeding temperature
Final concentration (dry materials %)
Evaporation rate (T/h)
If crystallization, requirement of crystals
Requirement of controlling, automatization
Product Properties
Product properties
Viscosity and flow properties
Tendency of foaming
Fouling and precipitation
Boiling Point
Utility Requirements
Steam pressure / temperature
Temperature of Cooling water feeding
Voltage / frequency
Unit price of steam (RMB/T)
Unit price of electric power (RMB/Kw)
Waste Heat Parameter
Waste vapour rate from dryer
Wet bulb temperature of waste vapour from dryer
Condensate rate from dryer
Condensate temperature from dryer
Liquefaction vapour rate
Liquefaction Vapour temperature
Others
Selection of Materials
Material of heating pipe
Material of tube plate
Material of contacting with liquor
Material of Contacting with secondary steam
Requirement of surface finish
Energy Efficiency of Evaporation Plants
Multiple-effect evaporation plant
TVR evaporation plant
MVR evaporation plant
Waste heat evaporation plant
Frequently Asked Questions (FAQ)
QWhat is an MVR evaporation plant and how does it work?
An MVR (Mechanical Vapour Recompression) evaporation plant uses a centrifugal fan to recompress the vapour produced during evaporation to a higher pressure, which raises its temperature. This recompressed vapour is then reused as the heating medium for the evaporation process, eliminating or significantly reducing the need for external steam. The condensate produced is also utilized for preheating the incoming feed product, making the system highly energy-efficient.
QHow much energy can an MVR evaporation plant save compared to a traditional multiple-effect evaporation plant?
The savings are significant. For example, with an evaporation rate of 50T/h and running 8,000 hours per year, a 4-effect evaporation plant may consume steam costing approximately 14,080,000 RMB annually, while an MVR plant using electric power costs only around 6,400,000 RMB — resulting in annual savings of approximately 7,680,000 RMB. MVR plants consume only 18–26 Kw of electricity per ton of water evaporated, compared to 0.16–0.6 tons of steam for traditional systems.
QWhat industries are MVR evaporation plants most suitable for?
MVR evaporation plants are particularly well-suited for the food and beverages industry (such as evaporation of milk, whey, and sugar solutions), the chemical industry (evaporation of aqueous solutions), the salt works industry (evaporation of saline solutions), and environmental protection technology applications such as the concentration of wastewater.
QWhat are the main advantages of an MVR evaporation plant over conventional systems?
Key advantages include low specific energy consumption, gentle evaporation due to low temperature differences (which improves product quality and reduces fouling), short product residence times, minimal cooling water requirements, high plant availability due to process simplicity, excellent partial load behaviour, and low specific operating costs. The system is also highly flexible as its rotary speed can be controlled by a frequency converter to adjust the evaporation rate and final product concentration.
QWhat compressor design options are available for different boiling point increases in MVR systems?
For applications with low boiling point increases, a single-stage compressor is typically sufficient to meet design requirements. For applications with high boiling point increases, two design options are available: multiple-stage compressors, or a combination of single-stage compressors with multiple-effect evaporation. The appropriate design is selected based on the specific process requirements and product characteristics.
QWhat key parameters are needed to select the right evaporation plant for my application?
A comprehensive set of parameters is required, including capacity and operational data (product name, feeding concentration, feeding temperature, final concentration, evaporation rate), product properties (viscosity, foaming tendency, fouling behaviour, boiling point), utility data (steam pressure/temperature, cooling water temperature, voltage/frequency, energy unit prices), waste heat parameters (vapour and condensate rates and temperatures from dryers), and material selection requirements for all components in contact with the process fluids.
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