Elettracqua

WFI BY DUAL CHAMBER THERMOCOMPRESSOR (ELETTRA DCT)

Thermocompressor stills produce quality water using a different technique then Multi Effects Stills.

Energy imparted to the generated steam, by a mechanical compressor, resulting in compressed steam with increased pressure and temperature.

Our vapor compressor has its own characteristic different from all the other Vapour Compression Systems on the market.

Thermocompressors are an integral part of maximising the efficiency of steam systems.

OPERATION

The Elettracqua system consists of two circuits:

Primary circuit, responsible for producing distillate from the feed water.
Secondary circuit, dedicated to heat recovery to ensure energy efficiency.

Both circuits use the same feed water. The feed water is heated in a heat exchanger and, after condensing, generates the distillate. In the evaporator column, the feed water temperature rises to 125°C, where it evaporates using energy provided by steam from the secondary circuit, which condenses in the heat exchanger. Additional heating is required during start-up or for hot distillate production.

Operating process:

Dry and clean steam: The large evaporation chamber ensures the production of dry steam free of droplets, which is further purified in a cyclone.
Sterile condensation: The clean steam enters the condenser, converting into sterile distillate.
Degassing: The distillate passes through a degassing chamber at 125°C to remove non-condensable gases, then is cooled to 80°C or 30°C.

On the other side of the condenser, the water from the secondary circuit evaporates, is compressed by a heat pump to a higher pressure and temperature, and reused to heat the feed water. The process maintains a higher pressure on the distillate side, ensuring GMP compliance.

Key advantage:

The Dual Chamber thermocompressor separates the two circuits, preventing any contact between Pure Steam and the compressor, thus eliminating the risk of contamination.

APPLICATIONS

The VAPOUR COMPRESSOR finds its natural application where is required cold WFI since there is the higher energy efficiency and where the industrial steam is not available or in lower quantity. The main part of the required energy for distillation is given by the compressor.

The DCT has lower energy costs then the other on the market, required energy is:

20 Wh/Liter for WFI at 30°C
100 Wh/Liter for WFI at 85°C

FEATURES AND BENEFITS

Compressor (heat pump system) is an absolute separated secondary system, thus no contamination due to the compressor is possible (i.e. abrasion caused by the steam or abrasion and leakage due to the sealings)
Sterile and pyrogen-free hot or cold distillate thanks to a high distillation temperature of 125°C and a long hold up time of the feed water inside the evaporation chamber, even with highly contaminated feed water
Distillate outlet with overpressure, approx. 0,6 bar, no extra pump needed in the system
Self-sterilisation at 121°C including peripheral equipment possible
low maintenance required
exceptional reliability
Pure steam production possible, even parallel to distillation
System flexible to various heating media: steam, hot water or electric
Possibility of hybrid heat exchanger of tubes heat exchanger for the evaporation column
Production flowrate from 100 to 6000 L/h