Multiple-effect vacuum evaporators (two phases).

The ENVIDEST MFE series thermal vacuum evaporator is designed to treat large volumes of aqueous-based streams with a low contaminant load. The equipment can be manufactured to operate using saturated steam or hot water to heat the product to be concentrated. The condensation of the generated vapour is carried out by supplying cooling water.

It is available in single-effect or multi-effect (double and triple) versions. The multi-effect versions are notable for their high energy efficiency, as they utilize the latent heat of generated vapour, thereby reducing the energy consumed.

Additionally, each effect is equipped with a recirculation pump to ensure forced circulation of the liquid, helping to prevent the formation of scale on the main heat exchanger. Its modular construction allows for an increase in production capacity without a significant rise in energy consumption.

The operation of the equipment is fully automatic - 24 hours a day.

Our evaporators ENVIDEST MFE 2

Main features

  • Technology: Evaporation with thermal energy; Forced Circulation (FC)
  • Single/Multi-Effect: Single-Effect; Multi-Effect
  • Thermal Energy for Evaporation: Saturated steam or hot water
  • Thermal Energy for Condensation: Cooling water
  • Vacuum 1st/2nd/3rd Effect: ≈ 310/200/125 mbar
  • Evaporation Temperature 1st/2nd/3rd Effect: ≈ 70/60/50 °C
  • Evaporation Vessel: Vertical conical bottom
  • Droplet Separator: Mesh Demister
  • Heat Exchanger for Heating: Shell and tube
  • Vacuum System: Liquid ring pump
  • Control Unit*: PLC Siemens with HMI touch screen
  • Protection: IP54
  • Electricity Supply**: 400 V III + PE 50 Hz
  • Standard Manufacturing Material: 1.4401/1.4404 (AISI 316/AISI 316L)
  • Special Anti-corrosion Manufacturing Material***: 1.4410 (Superduplex 2507)

* Different PLC manufacturer available on request
** Different voltage supply available on request
*** Consult other available material options

Diagram

ENVIDEST MFE 1 2 3

Technical specs

Parameter Unit 30000 40000 60000 80000 100000 120000
Capacity* L/day 30000 40000 60000 80000 100000 120000
Electricity Consumption kWh 27 29 36 44 50 54
Thermal Energy for Evaporation kWht 470 630 945 1260 1570 1885
Thermal Energy for Condensation kWht 470 630 945 1260 1570 1885
Length mm 7000 6650 8410 9000 10400 12000
Width mm 3900 3900 3900 6310 6500 6800
Height mm 5100 5530 5530 5540 5800 6100

* Data refer to clean water when working continuously in standard conditions (T = 20 °C, P = 1013 mbar).

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