CE Certification Jiangsu Zongheng MVR Evaporation Plant Suppliers, Factories

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CE Certification Jiangsu Zongheng MVR Evaporation Plant Suppliers, Factories

Mechanical Vapor Recompression (MVR) plants offer significant operational savings by using electricity to compress vapors for reuse as the heating medium. They feature low energy consumption, gentle low-temperature evaporation, and high operational flexibility. Primarily powered by motors, these systems are widely applied in industries like food, chemicals, and wastewater treatment.

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Product Description

Description

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

Type	Multiple-effect evaporation plant / TVR evaporation plant	MVR evaporation plant
Energy sources	Steam	Electric power
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.
Running time: 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	14,080,000RMB	6,400,000RMB
Economizing expense, per annum	Zero	7,680,000RMB

System Components

Evaporator
Condenser
Plate heat exchanger
MVR
Condensate Tank
Liquor
Product
Condensate
Fresh steam
Cooling water
Deaeration

Type Selection Criteria for Evaporation Plants

When designing 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)

How does an MVR Evaporation Plant reduce operational costs?

MVR plants utilize a centrifugal fan to recompress the generated vapour, raising its pressure and temperature. This allows the recompressed vapour to be recycled as the main heating medium. Consequently, little or no additional steam is required, which dramatically cuts operating costs in regions with affordable electricity.

What are the main energy sources for MVR evaporation systems?

Unlike traditional evaporation plants that rely heavily on steam, an MVR plant uses electric energy as its primary source of power to operate the compressor's main motor.

What determines the power consumption of an MVR plant?

The power consumption of the main motor is primarily determined by the heat exchange area and the evaporating temperature. A larger heat exchange area leads to lower power consumption but requires a higher initial equipment investment.

What is the difference between single-stage and multiple-stage compressors in design?

For configurations with low boiling point increases, a single-stage compressor is typically sufficient. For high boiling point increases, the system design will incorporate either multiple-stage compressors or a combination of single-stage compressors with multiple effects.

What are the key application areas of MVR plants?

MVR plants are extensively utilized in the food and beverage sectors (e.g., milk, sugar, and whey evaporation), chemical processes (aqueous solution evaporation), salt works (saline concentration), and environmental technologies (wastewater treatment).

How does the MVR system preserve the quality of the processed product?

MVR plants employ low temperature differences for gentle evaporation, which keeps thermal degradation to a minimum, maintains high product quality, and significantly reduces the scaling or fouling rate in the system.