- They use hot water or steam as an energy source
- These are the models with the highest capacity
- Different models to cover all types of currents
MODELS AND MAIN TECHNICAL FEATURES
Our thermal vacuum crystallizers concentrate industrial brines and crystallize the salts dissolved in the saline effluent, contributing to water recovery and the minimization or valorization of liquid waste.
Our thermal crystallizers use steam or hot water as a heat source and are particularly efficient in facilities with residual heat or existing thermal services. Their operating costs depend on the availability, temperature, and cost of the heat source, as well as on cooling requirements.
At Condorchem Enviro Solutions, we help you select the most suitable vacuum crystallizer model, taking into account the composition of your wastewater, the treatment capacity, the available services, and the requirements for the final concentrate.
We manufacture four models of thermal crystallizers.
Technology: Evaporation with thermal energy
Capacity (l/day): 2000 to 20000
Electricity consumption per 1 m³ of distillate produced: 4.2 to 5 kWh/m³
Thermal energy for evaporation: Saturated steam or hot water
Thermal energy for condensation: Cooling water
Vacuum: ≈ 200 mbar
Evaporation temperature: ≈ 60 °C
Technology: Evaporation with thermal energy
Capacity (l/day): 500 to 3000
Electricity consumption per 1 m³ of distillate produced: 2,7 to 7,4 kWh/m³
Thermal energy for evaporation: Saturated steam or hot water
Thermal energy for condensation: Cooling water
Vacuum: ≈ 200 mbar
Evaporation temperature: ≈ 60 °C
Technology: Evaporation with thermal energy
Capacity (l/day): 20000 to 100000
Power consumption per 1 m³ of distillate produced: 26 to 48 kWh/m³
Thermal energy for evaporation: Saturated steam or hot water
Thermal energy for condensation: Cooling water
Vacuum: ≈ 200 mbar
Evaporation temperature: ≈ 60 °C
Technology: Evaporation with thermal energy
Capacity (kg/day): 10000
Electricity consumption per 1 m³ of distillate produced: 5,5 kWh/m³
Thermal energy for evaporation: Saturated steam
Thermal energy for condensation: Cooling water
Vacuum: N/A
Evaporation temperature: ≈ 100 °C (Patm)
WHICH THERMAL CRYSTALLIZER BEST SUITS YOUR NEEDS?
| Model | Capacity | Application | Advantages |
|---|---|---|---|
| DESALT VR | 2.000–20.000 L/day* | Scaling effluents requiring high concentration and mechanical cleaning of heat transfer surfaces | The internal motorized scraper helps control deposits on the heat transfer surfaces. It operates under vacuum using steam or hot water. |
| DESALT DRY | 500–3.000 L/day* | Smaller volumes where the objective is to obtain a solid or semi-solid concentrate | Designed for advanced concentration. An optional internal screw homogenizes the product and facilitates discharge. It uses steam or hot water under vacuum. |
| DESALT MFE-1 | 20.000–100.000 L/day* | Large volumes of wastewater requiring salt crystallization and forced circulation | High-speed recirculation promotes heat transfer and helps limit scaling. Suitable for high-load aqueous streams, using steam or hot water under vacuum. |
| DESALT VTR | 10.000 kg/day per unit; parallel installation available | Saturated salt solutions or streams with high solids content requiring greater moisture reduction | Steam-heated atmospheric configuration, designed to maximize final concentration. Available with a condensation section when water recovery is required. |
The capacities of VR, DRY and MFE-1 are published reference values, based on operation with clean water under standard conditions. The actual wastewater flow rate depends on the feed composition and the required concentration. The capacity of VTR is expressed in kg/day and should not be compared directly with L/day.
MAIN OPERATIONAL ADVANTAGES
- Great versatility in the treatment of complex effluents, as we offer various models that adapt to different wastewater compositions and concentration requirements, including industrial applications where a significant reduction in final residue is required.
- Thermal vacuum crystallizers offer the widest range of capacities, with models capable of handling from 500 to 100.000 liters/day. This makes it possible to continuously treat large volumes of wastewater.
- Potential to reduce OPEX when waste heat is available at the plant, or when thermal energy can be acquired at low cost. This is an important aspect to consider in applications with sustained treatment demand.
MAIN COMPONENTS OF EACH MODEL
OPERATION OF OUR THERMAL CRYSTALLIZERS
External heat supply
An external heat source, such as steam or hot water, transfers thermal energy to the incoming effluent through a heat exchange surface. This energy heats the liquid and causes evaporation.
Water evaporation and concentration
As heat is supplied and the liquid fraction evaporates, the concentration of dissolved salts and other non-volatile substances in the remaining concentrate increases.
Crystal formation and growth
Upon reaching supersaturation, crystallizable salts form crystals. Continued evaporation reduces the moisture content of the concentrate. Circulation, agitation, or scraping systems, depending on the model, ensure the efficiency of the crystallization process.
Condensation and waste recovery
The generated vapor is condensed to recover water for potential reuse. The concentrated residue is extracted as a crystal suspension, semisolid material, or solid product, depending on the equipment and the composition of the wastewater. Additional separation or drying may be required to obtain the desired final product.