- Fully electrical operated crystallizers
- Up to 90% of waste reduction
- Up to 99% of water recovered
AVAILABLE MODELS AND MAIN TECHNICAL CHARACTERISTICS
Our crystallizers take evaporation a step further by allowing the final concentrated brine to turn into solid crystals and recover the remaining water.
Thanks to its low vacuum temperature, our heat pump crystallizers are the perfect option for the evaporation of heat-sensitive and/or corrosive products, reducing the risk of thermal degradation of the product and the deterioration of construction materials.
Two models cover the heat pump range of crystallizators.
DESALT LT VR uses a scraped vertical vessel and handles the wider capacity band, making it the choice for continuous treatment of scaling streams.
DESALT LT DRY drives concentration further toward a dry solid, and suits applications where the objective is minimising the volume of residue or recovering a salt or metal in solid form.
Both are selected primarily where no thermal utility exists on site and installing one would cost more than the crystallizer itself.
Technology: Heat pump (Freon R-513A)
Capacity (l/day): 250 to 3,500
Electricity consumption per 1 m³ of distillate produced: 220 kWh/m³
Vacuum: ≈ 60 mbar
Evaporation temperature: ≈ 35 °C
Technology: Heat pump (Freon R-513A)
Capacity (l/day): 250 to 1000
Electricity consumption per 1 m³ of distillate produced: 270 kWh/m³
Vacuum: ≈ 60 mbar
Evaporation temperature: ≈ 35 °C
KEY ADVANTAGES
- No thermal energy required. The unit needs only an electrical connection, which removes the cost, the permitting and the maintenance of a boiler or thermal oil circuit — frequently the deciding factor on sites treating a few hundred liters a day.
- Low-temperature operation. Evaporating at ≈ 35 °C rather than at atmospheric boiling point reduces scaling rates, protects thermolabile compounds, and keeps the equipment outside the scope of pressure vessel regulation.
- Concentration to a manageable solid. Internal mechanical devices keep the heat transfer surface clear and discharge the crystallized fraction automatically, converting a liquid waste stream into a solid residue and a recovered distillate.
MAIN COMPONENTS
The following video shows the different parts and layout of the DESALT LT DRY:
OPERATION OF OUR HEAT PUMP CRYSTALLIZERS
Vacuum generation and low-temperature boiling
The process begins by creating vacuum conditions inside the evaporation chamber. By reducing pressure, the boiling point of the effluent drops to 35°C. Water vapor is generated without thermal degradation of sensitive compounds.
Heat pump heating cycle
The heat required for evaporation is supplied by a closed-loop refrigeration cycle. The refrigerant gas is compressed, increasing its pressure and temperature. Then it passes through a heat exchanger transferring heat and sustaining evaporation. Next, the refrigerant is expanded through an expansion valve, reducing its temperature and pressure.
Vapor generation and continuous feeding
As heat is transferred to the effluent, the liquid begins to boil under vacuum and water vapor is continuously generated. Fresh effluent is preheated and fed into the evaporator to maintain steady operation.
Vapor condensation and energy recovery
The vapor produced during evaporation is directed to a second heat exchanger. The refrigerant absorbs heat from the vapor, which condenses into distilled water. The recovered distillate is extracted from the system and the refrigerant, now warmed, returns to the compressor to restart the cycle.
CONFIGURATIONS
A zero liquid discharge scheme concentrates an effluent through successive stages until no liquid leaves the site. Membranes and evaporators handle the bulk reduction; the crystallizer closes the chain, taking the final brine — the smallest and most concentrated stream, and the one no other technology can reduce further — and converting it into a solid residue plus recovered distillate.
At Condorchem Enviro Solutions, we manufacture two types of electrically driven heat pump crystallizers, each designed to achieve different levels of concentration and dryness, including corrosive and aggressive streams, while offering a wide range of solutions for varying wastewater volumes and compositions.
