Welcome: Yiwu Weihao Machinery Equipment Company
Yiwu Weihao Machinery Equipment Company professional industrial evaporator and crystallizer manufacturer, we design and produce high-performance MVR Evaporators with DTB Crystallizers. This integrated system combines the ultra-energy-saving advantage of MVR (Mechanical Vapor Recompression) technology with the precise crystallization control of DTB (Draft Tube Baffle) crystallizers, solving the pain points of uneven crystal size, low purity, high energy consumption, and easy scaling in traditional crystallization processes, providing a high-efficiency, low-consumption, and high-quality solution for industrial crystal recovery and concentration projects.
Our MVR Evaporator with DTB Crystallizer is a high-efficiency integrated system combining MVR (Mechanical Vapor Recompression) evaporation technology and DTB (Draft Tube Baffle) crystallization technology. This specialized equipment is tailored for industrial crystallization projects requiring high-purity crystal production and energy saving, solving core pain points such as uneven crystal size, easy scaling, low crystal purity, and high energy consumption in traditional crystallization processes. Widely used in chemical, pharmaceutical, food, and environmental protection industries, it realizes efficient concentration, controlled crystallization, and high-purity crystal recovery, helping enterprises achieve resource reuse and cost reduction.
Feed Preparation: Raw liquid (chemical solution, high-salinity wastewater, food syrup, etc.) is pre-filtered to remove solid impurities and suspended particles, adjusted to appropriate temperature, pH value, and concentration to create optimal crystallization conditions for the DTB crystallizer.
Forced Circulation & Evaporation: The pre-treated liquid is pumped into the heating chamber by a high-pressure, anti-clogging circulation pump, forming a high-speed turbulent flow in the heating tubes. Under vacuum conditions, the liquid is heated by recompressed steam from the MVR system, realizing low-temperature evaporation and rapid concentration to reach supersaturation.
MVR Vapor Recompression: The secondary steam generated during evaporation is suctioned and compressed by the MVR compressor, increasing its temperature and pressure to become high-quality heating steam, which is recycled back to the heating chamber for reuse—greatly reducing external steam demand and energy consumption.
DTB Controlled Crystallization: The supersaturated liquid enters the DTB crystallizer, where the draft tube promotes uniform circulation of the liquid, and the baffle separates the crystal growth zone from the clarification zone. Seed crystals are added to induce crystallization, and the gentle circulation ensures uniform crystal growth, preventing crystal agglomeration and scaling.
Crystal Separation & Discharge: The crystal-slurry mixture in the DTB crystallizer is continuously discharged to a centrifuge for solid-liquid separation. High-purity crystals are collected for reuse or sale, the mother liquor is recycled back to the evaporator for further concentration, and the condensed pure water is recycled for production or discharged up to standard.
Ultra Energy-Saving: MVR system recompresses and reuses secondary steam, reducing external steam consumption by 80–90% compared to traditional single-effect evaporators and 50–70% compared to multi-effect evaporators, significantly lowering operation costs for crystallization projects.
Uniform Crystal Quality: DTB crystallizer adopts draft tube and baffle design, realizing precise control of crystal growth environment—ensuring uniform crystal size (0.3–5mm adjustable), high crystal purity (up to 99.5%+), and good crystal morphology, meeting industrial product standards.
Anti-Scaling & Stable Operation: High-speed forced circulation combined with DTB crystallizer’s reasonable flow field design prevents crystal deposition and scaling on heating tube walls and crystallizer inner walls; anti-clogging components avoid equipment downtime, ensuring long-term stable continuous operation.
Wide Adaptability: Suitable for various materials requiring crystallization, including high-salinity brine (sodium chloride, ammonium sulfate), chemical solutions, food syrups, and pharmaceutical intermediates, capable of handling liquids with viscosity up to 5,000 cP.
Corrosion & Wear Resistance: All contact parts are made of high-grade corrosion-resistant and wear-resistant materials (316L stainless steel, Hastelloy optional), resisting corrosion from acidic, alkaline, and high-salinity liquids, as well as wear from crystals.
Intelligent & Easy Operation: PLC + HMI automatic control system, real-time monitoring of temperature, pressure, concentration, crystal size, and circulation flow; automatic adjustment of MVR compressor speed and DTB crystallizer operating parameters, realizing unmanned operation and easy maintenance.
Material | 316L Stainless Steel (Standard); Hastelloy (Optional for Strong Corrosion/Wear) |
Material Adaptability | High-Salinity Brine, Chemical Solutions, Food Syrups; Viscosity: Up to 5,000 cP |
Evaporation Capacity | 100–100000 L/h (Customizable) |
Operating Conditions | –0.06~–0.095 MPa, 50–80°C |
MVR Compressor Type | Roots Compressor / Centrifugal Compressor (Optional) |
Crystal Size (DTB Crystallizer) | 0.3–5mm (Adjustable) |
Widely used in industries requiring high-efficiency crystallization and resource recovery, including: Chemical Industry (sodium chloride, ammonium sulfate, potassium nitrate crystallization, chemical intermediate purification); Pharmaceutical Industry (API crystallization, pharmaceutical intermediate crystal recovery); Food Industry (sugar crystallization, honey concentration crystallization, fruit syrup crystallization); Environmental Protection Industry (high-salinity wastewater crystallization, salt recovery, zero-liquid-discharge projects); Other Industries (electroplating wastewater crystal recovery, battery material crystallization).
We provide one-stop solutions for your MVR Evaporator with DTB Crystallizer needs: custom design based on your material properties, crystallization requirements, crystal size, and production capacity; professional manufacturing with strict quality control for MVR system and DTB crystallizer; on-site installation, commissioning, and operator training; lifelong after-sales maintenance, spare parts supply, and technical support for both MVR and DTB systems. Free technical consultation, material sample test, and customized quotation are available—contact us to get your tailored crystallization solution.
