Vacuum evaporators
Vacuum evaporators are used to treat industrial wastewater to recover the water contained and reduce the volume of liquid disposals.
Thanks to the use of near vacuum pressure, the evaporation of water solution is possible at the temperature below 40°C, which significantly reduces power consumption and operating costs of the device. The process allows for recovering more than 90% of distilled water.
ZJG delivers vacuum evaporators for various industry sectors.
For the use with aggressive liquids, they are built with special materials such as: Titanium, Superduplex, Sanicro28 and internal coating with Halar®.
Advantages:
- >90% H2O recovered
- Less disposal costs
- Zero emissions
- 24h automatic functioning
- Idustry 4.0 ready
Sectors:
- Vibrofinishing
- Industrial cleaning
- Foundry
- Electroplating
- Emulsions and coolants
- Powder-coating pre-treatment
- Electronics and semiconductors
- Chemical industry
- Liquid waste disposal
- Pharmaceutical industry
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Vacuum evaporator with a heat pump (EV series)
Low temperature (<40°C) vacuum evaporators are equipped with heat pumps with a gas (freon) used as a primary heating and condensing medium.
Electrically powered, fully automated systems with semi-continuous or batch working cycles. EV series evaporators are standard and designed with materials that are suitable for any types of wastewater and therefore are a perfect solution for many industrial applications.
Specification
The EV series features a vertical stainless steel or special alloy boiling chamber, the lower part of which is equipped with an immersed coil heat exchanger. A droplet separator is installed in the upper part of the boiler to separate the steam from the water drops, steam that is then condensed with a heat exchanger installed in the upper side of the chamber. The vacuum (~960 mbar) is generated through a closed circuit with venturi ejector. Initial loading, liquid replenishment during the distillation cycle, condensate extraction and antifoam loading are carried out by the vacuum system.
Advantages:
- high purity distillate
- recovery >90% of distilled water
- low boiling temperature <40°C
- treatment of corrosive liquids
- low maintenance
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Vacuum evaporator with internal scraper (CVD-CVDHW series)
Vacuum evaporators with internal scraper are used for purifying highly concentrated solutions containing: suspensions, oils, organic compounds, salts and dissolved metals.
As in the case of EV series distillation process takes place in low temperature vacuum, but in this case a working chamber is equipped with internal scraper for mixing the solution in order to ensure an even heat exchange. Thanks to the scrapers's system high concentration rates are possible to reach and in some cases even a semi-solid waste.
CVD series evaporators are powered by heat pump, while CVDHW series are powered by hot water (or steam) and cold water.
In both series CVD and CVDHW the boiler is situated horizontally and equipped with an external heating jacket through which liquid heat source passes.
Inside the boiler there is a scraper system with brushes that keep the heating surface clean, ensuring an even heat exchange. The boiler has got also a side inspection door for process control and for cleaning of the inside of the working bowl. Low temperature vacuum in the distillation process is generated by a closed circuit with integrated venturi ejector.
Advantages:
- high concentration rates
- treatment of concentrated solutions
- internal purifying system with scraper
- low boiling temperature <40°C
- low maintenance costs
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