Tubular MVR Evaporator

1. Tubular MVR Evaporator Principle

The core of a tubular MVR evaporator is the use of a high-efficiency steam compressor to compress the secondary steam generated during the evaporation process, increasing its pressure and temperature, thus increasing its enthalpy. This high-temperature, high-pressure steam is then fed back into the heater as a heat source to heat the raw liquid. This method of recycling secondary steam significantly reduces the demand for external energy, achieving rapid energy utilization.

2. Tubular MVR Evaporator Structure

Evaporator: The main equipment, including the heater, separator, and circulating pump, responsible for heating, evaporating, and concentrating the material.

Compressor System: The core equipment, providing the evaporation heat source by compressing the secondary steam and increasing its enthalpy.

Preheater: Used for waste heat utilization and increasing the feed temperature, further recovering heat.

Vacuum System: Maintains the vacuum level of the entire system, extracting some non-condensable gases and gases introduced by the solution to achieve a stable evaporation state.

Control System: Enables automatic evaporation, cleaning, and shutdown operations, with automatic alarms, automatic system protection against damage, and maintenance of system dynamic balance.

3. Key Selection Points for Tubular MVR Evaporators

Material Characteristics: Clearly define the wastewater's pH value, salt type and concentration, COD, and other parameters to select appropriate materials and equipment types. For example, high-salt wastewater (containing chloride ions) requires corrosion-resistant materials such as titanium alloy or 2205 duplex stainless steel.

Capacity and Efficiency: Select equipment specifications based on the daily processing capacity to ensure matching evaporation capacity. For medium to large-scale processing (≥10 tons/day), the energy-saving advantages of MVR evaporators are significant.

Comprehensive Economic Assessment: Although the initial investment in MVR equipment is higher, the operating cost is low, and the payback period is typically 6-12 months. Its energy-saving advantages are evident in long-term operation.

Manufacturer Qualifications: Choose manufacturers with ISO certification and proven track records.

4. Tubular MVR Evaporators Application Scenarios

Tubular MVR evaporators are suitable for various industrial applications, particularly excelling in treating high-salinity wastewater, concentrating whey protein, and producing chemical raw materials. They effectively reduce energy consumption and operating costs while improving product quality. Specific applications include:

• Chemical Industry: Used for the production of chemical raw materials such as sodium sulfate, sodium persulfate, and sodium chlorite.

• Pharmaceutical Industry: Used for the concentration of antibiotics and plant extracts.

• Food Industry: Used for the concentration of fruit juice and milk.

• Environmental Protection: Used for treating industrial wastewater, achieving wastewater reduction, resource recovery, and zero discharge.

Tubular MVR evaporators, with their advantages of rapid energy saving, ease of operation, and strong environmental friendliness, have become one of the preferred technologies in the industrial evaporation field.