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Help CenterVacuum Multi-Stage MVR Multiple Effect DTB Crystallizer for Efficient Separation
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Qingdao Conqinphi Environmental Technology Group Co., Ltd. proudly introduces our Vacuum Multi-Stage MVR Multiple Effect DTB Crystallizer — a high-performance solution designed for efficient separation and crystallization in demanding industrial processes. With over a decade of manufacturing expertise (since 2015), a state-of-the-art 10,000-30,000 m² factory, and an annual export value of US$10-50 million, we deliver reliable equipment trusted by clients across North America, Europe, and Asia. Our crystallizer combines advanced multi-stage MVR (Mechanical Vapor Recompression) technology with multiple effect and DTB (Draft Tube Baffle) principles, maximizing energy efficiency while ensuring product purity and operational stability.
This crystallizer is engineered to handle challenging separation tasks — from brine concentration and salt recovery to fine chemical crystallization. The vacuum operation lowers boiling temperatures, reducing scaling and corrosion risks, while the multi-stage MVR system reuses vapor energy, cutting energy consumption by up to 60% compared to traditional evaporators. The Draft Tube Baffle (DTB) design promotes uniform crystal growth and prevents fouling, making it ideal for continuous or batch processes. Every unit is customized to your specific capacity, material, and control requirements, backed by our ISO9001 and ISO14000 certified manufacturing processes.
Key Features & Technical Specifications:
- Multi-Stage MVR Technology: Uses mechanical compressors to recycle vapor latent heat, achieving energy savings of 40-60% vs. single-effect evaporators.
- Multiple Effect Design: Series of evaporation stages (up to 5 effects) maximize heat utilization and throughput.
- DTB (Draft Tube Baffle) Configuration: Promotes controlled crystal growth, minimizes fines, and reduces scaling — ideal for sticky or viscous solutions.
- Vacuum Operation: Lowers boiling point, suitable for heat-sensitive materials; reduces corrosion and scaling rates.
- Wide Material Compatibility: Available in stainless steel 316L, duplex, or titanium for corrosive media (pH 2-12).
- PLC + HMI Control: Automated operation with remote monitoring capabilities; customizable for local standards.
- Compact Footprint: Space-saving modular design — easy to integrate into existing lines.
Typical Product Parameters (Reference):
| Parameter | Value / Range |
| Evaporation Capacity | 500 – 50,000 kg/h (custom) |
| Number of Effects | 2–5 (configurable) |
| Operating Temperature | 40–100 °C (vacuum dependent) |
| Vacuum Level | -0.08 to -0.095 MPa |
| Crystal Purity | >99% (depending on feed) |
| Power Consumption | 15–200 kW (MVR compressor) |
| Material of Construction | SS304 / SS316L / Duplex / Titanium |
| Control System | PLC + Touch Screen (Siemens/Mitsubishi) |
Customer Benefits in Practice:
- Reduce Operating Costs: Lower steam consumption (only ~0.2-0.3 ton steam per ton evaporation vs. 1.0-1.2 for conventional).
- High Product Quality: Gentle vacuum evaporation preserves heat-sensitive compounds; DTB design yields uniform crystals.
- Easy Maintenance: DTB baffle reduces scaling frequency; CIP (Clean-in-Place) option available.
- Environmentally Friendly: Closed-loop MVR system minimizes waste heat and water discharge.
- Scalable & Modular: Can be combined with pre-concentrators or dryers for complete process lines.
At Qingdao Conqinphi, we have delivered over 200 crystallization systems since 2015, serving industries from chlor-alkali and soda ash to lithium extraction and pharmaceutical intermediates. Our factory employs 200+ skilled workers and engineers, ensuring rigorous quality control at every stage. With certifications including ISO9001, ISO14000, OHSAS18001, SA8000, and HACCP, we meet international standards. Our main markets span 6 continents, and we ship from Qingdao Port with efficient logistics. We also offer on-site commissioning, training, and 24/7 technical support — because your success is our priority.
“We needed a reliable crystallizer for brine concentration that could reduce energy costs by half and handle variable feed quality. Conqinphi’s DTB MVR unit exceeded expectations — crystal quality is consistent, and the system runs smoothly with minimal downtime.” — Feedback from a South American chlor-alkali plant manager.
Upgrade your separation process today. Contact us for a tailored solution with free process evaluation and customized design. We look forward to partnering with you.
Frequently Asked Questions (FAQ)
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Q: What industries is this crystallizer suitable for?
A: It is widely used in chemical (salt, soda ash, fertilizers), pharmaceutical (API crystallization), food (sugar, citric acid), and wastewater treatment (zero liquid discharge). -
Q: How does the MVR system save energy?
A: The mechanical compressor recycles vapor generated during evaporation, compressing it to raise its temperature and pressure, then reusing it as heating steam — cutting fresh steam demand by 40-60%. -
Q: Can the crystallizer handle corrosive or viscous liquids?
A: Yes. We offer materials like duplex stainless steel or titanium for corrosive media. The DTB design handles viscosities up to ~500 cP with proper agitation. -
Q: What is the typical lead time for delivery?
A: Standard units: 30–45 days after order confirmation; custom projects with special materials may take 60–90 days. We ship FOB Qingdao. -
Q: Do you provide installation and commissioning support?
A: Absolutely. Our team can be dispatched for on-site supervision, or we offer remote guidance via video. Training for operators is included. -
Q: Is the crystallizer customizable in size and control?
A: Yes. Capacity, number of effects, automation level (PLC brand), and auxiliary equipment (pre-heater, condenser, centrifuge) are all customizable. -
Q: What maintenance is required?
A: Regular inspection of seals, bearings, and compressor. The DTB design reduces scaling, so cleaning intervals can be 2–4 months depending on feed. CIP nozzles can be added.
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