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Help CenterMulti-Stage Evaporation Crystallizer for Salt Separation and High Purity Recovery
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Qingdao Conqinphi Environmental Technology Group Co., Ltd. has been a leading manufacturer of industrial evaporation and crystallization systems since 2015. Our Multi-Stage Evaporation Crystallizer for Salt Separation and High Purity Recovery is engineered to meet the most demanding requirements in chemical, pharmaceutical, and wastewater treatment industries. With a factory spanning 10,000–30,000 square meters and a dedicated team of 201–300 employees, we deliver reliable, energy-efficient solutions that maximize product purity and minimize operational costs. This crystallizer is built under strict quality management systems certified by ISO9001, ISO14000, and OHSAS18001, ensuring consistent performance and environmental responsibility.
The multi-stage evaporation crystallizer utilizes a series of evaporation chambers to progressively concentrate and separate salts from solutions, achieving high-purity crystalline products. The design integrates advanced heat transfer technology and automated control, making it ideal for zero liquid discharge (ZLD) systems, brine treatment, and resource recovery. Below are the key features and technical specifications.
Key Features & Advantages
- Multi-stage design – Higher thermal efficiency and lower energy consumption compared to single-stage evaporators.
- Salt separation efficiency – Up to 99% purity for recovered salts, suitable for reuse or sale.
- Customizable materials – Available in stainless steel 316L, duplex, or titanium for corrosive environments.
- PLC automation – Touch-screen control for real-time monitoring, alarm management, and data logging.
- Flexible energy source – Can be integrated with mechanical vapor recompression (MVR) or steam heating systems.
- Low scaling tendency – Optimized flow patterns and anti-scaling design reduce maintenance downtime.
- Compact footprint – Modular construction allows easy installation and expansion.
Technical Specifications
| Parameter | Value Range |
|---|---|
| Number of Stages | 3 – 5 (customizable) |
| Evaporation Capacity | 500 kg/h – 50,000 kg/h |
| Operating Temperature | 60°C – 120°C |
| Operating Pressure | Atmospheric to vacuum |
| Power Consumption | 20 – 200 kW (depending on capacity) |
| Material of Construction | SS316L, Duplex, Titanium (optional) |
| Control System | PLC + HMI touch screen |
Detailed Description of Operation
The multi-stage evaporation crystallizer works by feeding a salt-containing solution into the first effect, where it is heated by steam or MVR. The vapor generated is used to heat the next effect, cascading energy savings. As the solution concentrates, salts begin to crystallize and are separated via a hydrocyclone or centrifuge. The mother liquor is recycled back to the evaporator for further concentration, while the high-purity crystals are collected. This process can achieve up to 95% water recovery and salt purity above 99%.
Benefits for Your Business:
- Reduces waste disposal costs by recovering valuable salts and water.
- Minimizes energy consumption through multi-stage heat integration.
- Produces high-purity crystals suitable for resale or reuse in industrial processes.
- Complies with stringent environmental regulations for zero liquid discharge.
- Low maintenance due to anti-scaling design and durable materials.
Why Choose Qingdao Conqinphi?
With an annual export value of US$10 million – US$50 million, our products are trusted by clients across North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our factory is equipped with advanced manufacturing and testing facilities, and we hold multiple certifications including ISO9001, ISO14000, and OHSAS18001. We have supplied over 200 evaporation systems globally, with a proven track record of reliability and customer satisfaction. Our team of experienced engineers provides comprehensive after-sales support, including installation, commissioning, and training. Contact us today to discuss your specific salt separation and recovery needs – we are ready to deliver a customized solution that maximizes your return on investment.
Frequently Asked Questions (FAQ)
Q1: What types of salt solutions can this crystallizer handle?
A: It is suitable for sodium chloride, potassium chloride, sodium sulfate, calcium chloride, and other common industrial salts. For highly corrosive solutions, we can customize materials.
Q2: What is the typical energy consumption compared to single-stage evaporators?
A: Multi-stage designs can reduce energy consumption by 40–60% depending on the number of stages and operating conditions. With MVR integration, energy savings can be even higher.
Q3: Can the system be integrated into an existing ZLD plant?
A: Yes, our crystallizer is designed as a modular unit that can be easily integrated with existing pre-treatment, reverse osmosis, or other evaporation systems.
Q4: What is the maximum salt purity achievable?
A: Typically above 99% purity for well-controlled processes. Purity depends on feed composition, operating conditions, and post-treatment steps.
Q5: How is scaling prevented in the evaporator?
A: Our design includes optimized flow velocities, seed crystal addition, and periodic cleaning cycles. Anti-scaling coatings are also available for harsh conditions.
Q6: What is the lead time for a custom system?
A: Typical lead time is 8–12 weeks after order confirmation, depending on capacity and customization level. Rush orders can be discussed.
Q7: Do you provide installation and commissioning services?
A: Yes, we offer on-site installation supervision, commissioning, and operator training. Remote support is also available.
Q8: What certifications does your factory hold?
A: Our factory is certified under ISO9001, ISO14000, OHSAS18001, and other industry-specific standards. We can provide certificates upon request.
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