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As a leading manufacturer based in Qingdao, China, Qingdao Conqinphi Environmental Technology Group Co., Ltd. has been dedicated to the design and production of high-efficiency evaporation systems since 2015. Our Multi-Effect Evaporation MVR Salt Plant Evaporator is specifically engineered for seawater desalination and salt recovery, combining the proven benefits of multi-effect evaporation with mechanical vapor recompression (MVR) technology. This system delivers outstanding energy efficiency, reduced operational costs, and reliable performance even in challenging marine environments.
Leveraging our 10,000-30,000 m² factory and a skilled team of 201-300 employees, we have exported over US$10 million worth of equipment annually to markets across North America, Europe, Southeast Asia, Africa, and the Middle East. Our evaporator units are trusted by clients in the salt industry, desalination plants, and chemical processing sectors for their robust construction and intelligent automation.
This product integrates multi-effect evaporation (usually 3-7 effects) with MVR technology, which recycles the latent heat of vaporized water to drastically cut energy consumption. Compared to traditional single-effect or thermal desalination processes, our system can reduce energy usage by up to 60-80%, making it an ideal solution for large-scale seawater desalination and salt concentration.
Key Features & Benefits
- High Energy Efficiency – MVR technology reuses vapor compression, achieving a specific energy consumption of only 20-60 kWh per cubic meter of fresh water produced.
- Modular & Scalable Design – Available in capacities from 10 m³/d to 200 m³/d, with customizable configurations to meet site-specific requirements.
- Superior Salt Recovery – The multi-effect design allows for precise control of temperature and pressure, enabling high-purity salt crystallization (purity up to 99.5%).
- Corrosion-Resistant Materials – Constructed from stainless steel 316L or titanium for seawater contact parts, ensuring long service life in saline environments.
- Fully Automated Control – PLC-based system with touchscreen HMI provides real-time monitoring, alarm management, and remote operation capability.
- Low Maintenance – Fewer moving parts compared to traditional mechanical compressors, leading to reduced downtime and maintenance costs.
- Eco-Friendly – Zero liquid discharge (ZLD) option available, minimizing environmental impact.
Technical Specifications
| Parameter | Value |
|---|---|
| Evaporation Capacity | 10 – 200 m³/d (customizable) |
| Number of Effects | 3 – 7 (optional) |
| Operating Temperature | 40 – 70°C |
| Power Consumption | 20 – 60 kWh/m³ |
| Material of Construction | SS316L / Titanium / Duplex Steel |
| Control System | PLC + HMI (Siemens/Mitsubishi) |
| Salt Purity | ≥99.5% (adjustable) |
| Water Recovery Rate | Up to 95% |
Our evaporator is designed to handle seawater with salinity ranging from 3.5% to 25% (brine), making it suitable for both coastal desalination projects and inland salt lake operations. The integrated MVR compressor reduces the need for external steam sources, allowing the system to operate independently with only electrical power input.
Application Scenarios
- Seawater Desalination – Production of fresh water for municipal or industrial use.
- Salt Production – Concentration and crystallization of salt from brine or seawater.
- Zero Liquid Discharge (ZLD) – Treatment of industrial wastewater to recover water and solids.
- Chemical Processing – Concentration of heat-sensitive solutions under vacuum.
Why Choose Conqinphi?
With our factory spanning 10,000-30,000 square meters and a dedicated R&D team, we have delivered over 200 evaporation systems worldwide. Our OHSAS18001 and ISO14000 certifications reflect our commitment to occupational health and environmental responsibility. Each unit undergoes rigorous quality testing before shipment from the Port of Qingdao.
We offer comprehensive after-sales support including on-site commissioning, operator training, and spare parts supply. Our annual export value of US$10-50 million and presence in 15+ international markets demonstrate the trust our clients place in our technology.
Contact us today to discuss your specific desalination or salt production needs. Our engineers will provide a tailored solution with a detailed proposal and competitive pricing.
Frequently Asked Questions
Q1: What is the difference between MVR and multi-effect evaporation?
A: Multi-effect evaporation uses steam from one effect to heat the next, while MVR (Mechanical Vapor Recompression) compresses the vapor to increase its temperature and pressure, then reuses it as heating medium. Combining both maximizes energy efficiency.
Q2: How much energy can this system save compared to traditional desalination?
A: Traditional thermal desalination typically consumes 80-120 kWh/m³. Our MVR multi-effect system can reduce this to 20-60 kWh/m³, saving up to 60-80% of energy.
Q3: What materials are used for seawater contact parts?
A: We use SS316L, titanium, or duplex steel depending on the salinity and corrosion requirements. Titanium is recommended for high-chloride environments.
Q4: Can the system handle high-salinity brine (e.g., 25% salt)?
A: Yes, our evaporator is designed to concentrate brine up to near saturation (25-30% salt content) with proper material selection and anti-scaling measures.
Q5: What is the typical lifespan of the equipment?
A: With proper maintenance, the evaporator can operate for 15-20 years. The MVR compressor and heat exchangers are designed for continuous duty.
Q6: Do you provide on-site installation and training?
A: Yes, we offer full installation supervision, commissioning, and operator training as part of our service package. Optional remote monitoring is also available.
Q7: What is the delivery time?
A: Standard delivery is 60-90 days after order confirmation, depending on capacity and customization. Contact our sales team for a precise schedule.
Q8: Do you have certifications for quality management?
A: Yes, our factory is certified with ISO9001, ISO14000, OHSAS18001, and other international standards. We also comply with HACCP and SA8000 where applicable.
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