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As a leading manufacturer based in Qingdao, China, Qingdao Conqinphi Environmental Technology Group Co., Ltd. specializes in advanced crystallization and evaporation solutions. Our Skid-Mounted Low-Temperature Freeze Multi-Effect Salt Evaporation Crystallizer represents a breakthrough in energy-efficient salt recovery and zero-liquid-discharge (ZLD) processes. Designed for industries requiring cost-effective brine treatment, this system leverages low-temperature freeze separation combined with multi-effect distillation to achieve high-purity crystalline salt while minimizing thermal energy consumption.
Key Features and Benefits
- Low-Temperature Operation: Utilizes freezing point depression to crystallize salts at below ambient temperatures, significantly reducing energy costs compared to conventional thermal evaporators.
- Multi-Effect Configuration: Multiple chambers reuse latent heat from vapor condensation, resulting in energy savings of up to 60%.
- Skid-Mounted Design: Pre-assembled on a compact skid for easy transportation, installation, and integration into existing facilities.
- Modular Scalability: Capacity can be scaled by adding or removing effect modules to match specific production requirements.
- High Salt Recovery: Achieves >90% water recovery and produces dry, free-flowing crystalline salt suitable for reuse or disposal.
- Automatic Control: PLC-based automation with HMI ensures unattended operation and real-time monitoring of temperature, pressure, and flow rates.
Technical Specifications
| Parameter | Value |
| Evaporation Temperature Range | -5°C to 10°C |
| Operating Pressure | Vacuum (0.5–10 kPa) |
| Number of Effects | 3–8 (customizable) |
| Capacity (fresh water equivalent) | 1–50 m³/day |
| Power Consumption | 20–80 kWh/m³ (dependent on configuration) |
| Materials of Construction | SS316L / Duplex / Titanium (optional) |
| Control System | PLC + Touch Screen (remote monitoring optional) |
| Feed Salinity Range | 0.5% – 25% TDS |
Operational Advantages
Energy Efficiency: By utilizing the phase change of water at low temperatures, our crystallizer consumes significantly less energy than traditional multi-effect evaporators. The combination of freeze crystallization and multi-effect heat recovery reduces overall operating expenses by 30–50%.
Scalable and Compact: The skid-mounted design minimizes footprint and facilitates quick deployment. Whether you need a small pilot unit or a full-scale industrial system, our modular approach allows easy capacity expansion.
High Quality Salt Output: The low-temperature process prevents thermal degradation of organic impurities, resulting in purer salt crystals that can be recycled or sold.
Low Maintenance: Corrosion-resistant materials and simple mechanical components ensure long service life with minimal downtime. Automated cleaning cycles are available upon request.
Environmental Compliance: Achieve strict discharge regulations and move toward zero liquid discharge (ZLD). The system can handle brines from desalination, chemical, pharmaceutical, and mining industries.
Trust and Reliability
Qingdao Conqinphi Environmental Technology Group has been a trusted manufacturer since 2015, with a factory size of 10,000–30,000 square meters and over 200 skilled employees. We export to more than 20 countries across North America, Europe, Asia, and Africa, with an annual export value exceeding US$10 million. Our products are certified under multiple international quality management systems, including ISO9001, ISO14001, OHSAS18001, and others, ensuring consistent performance and safety. With our dedicated R&D team and after-sales support, we provide comprehensive solutions from design to commissioning.
Frequently Asked Questions
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What is the typical payback time for this crystallizer?
Depending on local energy costs and water volumes, many clients achieve payback within 1–2 years due to energy savings and salt revenue. -
Can the unit handle feed with high scaling potential?
Yes, our low-temperature process reduces scaling risks, and we can incorporate anti-scalant dosing or periodic cleaning protocols. -
What is the minimum footprint required for installation?
A standard 100 m³/day unit occupies approximately 100–150 m², including access and maintenance space. -
Do you provide installation and commissioning services?
Yes, our technical team can travel to your site for supervision or full turnkey installation. -
Is the system suitable for offshore or remote locations?
Absolutely. The skid-mounted, pre-piped design allows containerized shipping and minimal on-site work. -
Can the crystallizer be used for zero liquid discharge applications?
Yes, it is specifically designed to concentrate brine to the point of salt crystallization, enabling ZLD. -
What warranties and after-sales support do you offer?
We offer a standard 12-month warranty, with extended options available. Spare parts are stocked globally for quick delivery. -
How do I determine the number of effects needed for my application?
We provide free process evaluation based on your feed composition and required output. Contact our sales team for a customized proposal.
Contact us today for a customized solution that maximizes your brine treatment efficiency and sustainability.
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