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Help CenterChemical Industry Vacuum Evaporation Crystallizer for Concentrating Sodium Chloride Solution
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As a leading manufacturer from Qingdao Conqinphi Environmental Technology Group Co., Ltd., we are proud to present our advanced Chemical Industry Vacuum Evaporation Crystallizer specifically designed for concentrating sodium chloride solutions. With over 8 years of expertise in environmental technology and a factory spanning 10,000-30,000 square meters, our equipment is engineered to achieve high-purity salt recovery while minimizing energy consumption. This crystallizer integrates vacuum evaporation technology to handle corrosive brine streams efficiently, offering a sustainable solution for chemical processing, wastewater treatment, and zero-liquid discharge (ZLD) applications.
Our team of 201-300 skilled professionals ensures that every unit meets rigorous quality standards, backed by certifications including ISO9001, ISO14001, and OHSAS18001. The crystallizer is built with premium materials such as 316L stainless steel or titanium (optional) to withstand high chloride concentrations and elevated temperatures. Whether you need to concentrate sodium chloride from 5% to near saturation or recover crystalline salt for reuse, this equipment delivers consistent performance with minimal maintenance.
Below we detail the key features, technical specifications, and benefits that make our vacuum evaporation crystallizer a preferred choice for chemical industries worldwide.
Product Features & Advantages
- High Efficiency Vacuum Evaporation: Operating under vacuum reduces boiling point, enabling energy savings of up to 30% compared to atmospheric evaporation. The system is suitable for heat-sensitive solutions and lowers scaling risks.
- Robust Construction Materials: Standard wetted parts are fabricated from 316L stainless steel; for aggressive chloride environments, titanium or duplex stainless steel options are available upon request.
- MVR / Multi-Effect Configuration: Choose between Mechanical Vapor Recompression (MVR) or multi-effect evaporation (MEV) to match your plant’s steam and electricity availability. MVR can reduce operating costs by 40-60%.
- Automated Control System: PLC-based control with HMI touch screen allows real-time monitoring of temperature, pressure, feed rate, and crystal slurry density. Parameters can be adjusted remotely via optional SCADA integration.
- Anti-Crystallization Design: Forced circulation or draft tube baffle (DTB) crystallizer design ensures uniform crystal growth, preventing fouling and blockages. The system can produce salt crystals with a mean size of 200-500 microns.
- Low Maintenance & Long Service Life: Self-cleaning filters and easy-access inspection ports reduce downtime. The crystallizer is designed for continuous 24/7 operation with minimal operator intervention.
- Compliance & Safety: Fully welded construction meets ASME or PED standards (optional). The system includes multiple safety interlocks, emergency shutdown, and vapor recovery to comply with environmental regulations.
Technical Specifications (Typical Model)
| Parameter | Specification |
|---|---|
| Evaporation Capacity | 500 – 5000 L/h (customizable up to 20,000 L/h) |
| Operating Temperature | 50 – 90°C (under vacuum) |
| Vacuum Degree | -0.08 to -0.095 MPa |
| Feed NaCl Concentration | 5% – 25% (by weight) |
| Final Salt Purity | ≥ 98.5% (dry basis) |
| Power Consumption (MVR) | 15 – 60 kWh per ton of evaporated water |
| Steam Consumption (MEV) | 0.3 – 0.6 ton steam per ton evaporated water |
| Material of Construction | 316L SS / Titanium / Duplex (optional) |
The above data is for reference; actual specifications can be tailored to your specific feed composition and target output. Our engineering team will conduct a thorough analysis of your brine characteristics to optimize the evaporation crystallizer design.
Key Benefits for Your Business
- Significant Cost Reduction: By recovering high-purity salt and reusing condensate water, you reduce raw material procurement and wastewater disposal costs. The payback period is typically 1-2 years.
- Environmental Compliance: Achieve zero-liquid discharge (ZLD) or minimal liquid discharge (MLD) goals. The system helps meet stringent environmental regulations, avoiding penalties and enhancing your corporate sustainability image.
- Scalable & Flexible: Modular design allows easy expansion. You can start with a single unit and add capacity as your production grows. The crystallizer handles varying feed flow rates and compositions without performance loss.
- Proven Reliability: Over 100 units installed globally in chemical, pharmaceutical, and food processing industries. Our equipment has an average uptime of 95%+ with proper maintenance.
- Local Support & Global Reach: Headquartered in Qingdao, with port access for fast shipping. We provide on-site installation supervision, commissioning, and training. Our after-sales team responds within 24 hours.
At Qingdao Conqinphi Environmental Technology Group, we have been serving the chemical industry since 2015. Our factory is certified under ISO9001, ISO14001, OHSAS18001, and other international standards. With an annual export value exceeding US$10 million – US$50 million, we export to North America, South America, Europe, Southeast Asia, Africa, and the Middle East. Our team of 201-300 dedicated employees ensures that every crystallizer is built with precision and delivered on time. We have successfully completed projects for major chemical companies, achieving salt recovery rates of up to 99% and energy savings of 40% compared to traditional evaporators.
Ready to optimize your sodium chloride concentration process? Contact us today for a customized proposal. Our technical experts will analyze your feedstock and provide a detailed energy and cost analysis. We offer free consultation, factory acceptance testing, and a 12-month warranty on all equipment. Partner with a manufacturer that combines innovation, reliability, and global service.
Frequently Asked Questions (FAQ)
Q1: What is the maximum sodium chloride concentration achievable with this crystallizer?
A: The system can concentrate NaCl solution from dilute feed up to near saturation (approximately 26-27% at room temperature). Under vacuum, the saturation concentration increases slightly, and the crystallizer can produce solid salt with >98.5% purity. Final concentration depends on the evaporation temperature and vacuum level.
Q2: Can this equipment handle other chloride salts besides sodium chloride?
A: Yes, the vacuum evaporation crystallizer is versatile and can be adapted for potassium chloride, calcium chloride, magnesium chloride, and mixed brines. However, material selection and operating parameters may need adjustment due to different corrosion behavior and solubility. We recommend sharing your specific brine composition for a customized solution.
Q3: What is the typical energy consumption for MVR vs. multi-effect evaporation?
A: For MVR, the energy consumption is about 15-60 kWh per ton of evaporated water (electricity only). For multi-effect (MEV), steam consumption is 0.3-0.6 tons of steam per ton of evaporated water, depending on the number of effects. MVR is more economical if electricity is cheaper than steam; MEV is preferred when low-cost steam is available. We can help you choose the most cost-effective configuration based on local utility prices.
Q4: How do you prevent scaling and fouling during crystallization?
A: Our crystallizer employs forced circulation with high slurry velocity to minimize salt deposition on heat transfer surfaces. Additionally, we can integrate a seed crystal system or periodic cleaning-in-place (CIP) cycles. For feeds with high hardness or sulfate, we recommend pre-treatment like softening or nanofiltration. The DTB design also promotes large crystal growth, reducing scaling.
Q5: What is the delivery time and what shipping options are available?
A: Lead time is typically 8-12 weeks after order confirmation, depending on capacity and customization. We ship from Qingdao Port, China, which is a major international hub. We can arrange FOB, CIF, or DDP terms. The equipment is packed in waterproof and shock-proof crates to ensure safe transit.
Q6: Do you provide installation and training services?
A: Yes, we offer on-site installation supervision by our experienced engineers. Training for your operators is included, covering normal operation, maintenance, and troubleshooting. Remote support via video call is also available. We can provide extended service contracts if needed.
Q7: What certifications does your equipment hold?
A: Our factory is ISO9001, ISO14001, and OHSAS18001 certified. The crystallizer can be manufactured to meet ASME, PED, or GB standards as required. We also have TL900, QS9000, SA8000, and other certifications in our portfolio. Please specify which standard you need during the inquiry.
Q8: How do I get a quotation for a specific capacity?
A: Simply fill out the inquiry form on our website or contact our sales team directly. Provide the volume of feed, NaCl concentration, desired final product (e.g., concentrated brine or solid salt), and your utility conditions (steam/electricity cost). We will prepare a detailed proposal within 48 hours, including a process flow diagram, equipment list, and budget price.
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