Welcome: Yiwu Weihao Machinery Equipment Company
Yiwu Weihao Machinery Equipment Factory professional evaporator manufacturer specializing in high-salinity wastewater treatment and resource recovery, we design and produce high-performance MVR (Mechanical Vapor Recompression) Evaporators specifically engineered for Ammonium Sulfate (NH₄)₂SO₄ Crystallization. This equipment integrates ultra-energy-saving MVR technology with optimized forced circulation and anti-crystallization scaling designs, solving the core pain points of ammonium sulfate wastewater treatment—such as easy scaling, high energy consumption, and difficult salt recovery. It delivers a stable, efficient, and environmentally sustainable solution for industrial ammonium sulfate crystallization and zero-liquid-discharge (ZLD) projects.
Our MVR Evaporator for Ammonium Sulfate Crystallization is a specialized high-efficiency crystallization system tailored for treating ammonium sulfate-containing wastewater from various industrial processes. Widely used in chemical synthesis, pharmaceutical manufacturing, and power plant flue gas desulfurization (FGD) projects, this equipment realizes efficient concentration, crystallization, and recovery of ammonium sulfate. By combining MVR vapor recompression technology with optimized forced circulation design, it effectively prevents ammonium sulfate scaling and crystal adhesion on heating surfaces, ensuring long-term stable operation while significantly reducing energy costs and environmental impact.
Feed Preprocessing: Ammonium sulfate wastewater is pre-filtered to remove suspended solids and impurities, adjusted to an appropriate pH (typically 5-7) to prevent corrosion and optimize crystal growth, then enters the feed tank.
Forced Circulation: The pre-treated wastewater is pumped into the heating chamber by a high-pressure, anti-clogging circulation pump, forming a high-speed turbulent flow in the titanium or 316L stainless steel heating tubes. This turbulent flow effectively prevents ammonium sulfate crystal deposition and scaling on the tube walls.
MVR Vapor Recompression & Evaporation: The wastewater is heated by recompressed steam in the heating tubes. Under vacuum conditions (-0.06 to -0.09 MPa), the water evaporates to generate secondary steam. The MVR compressor aspirates and compresses this secondary steam, increasing its temperature and pressure to become high-quality heating steam, which is recycled back to the heating chamber—eliminating the need for external fresh steam.
Controlled Crystallization: As water evaporates, the ammonium sulfate concentration in the wastewater reaches supersaturation, and crystals begin to form in the large-volume crystallization chamber. The forced circulation ensures uniform crystal growth, preventing agglomeration and ensuring uniform crystal size.
Solid-Liquid Separation & Recovery: The ammonium sulfate crystal-slurry mixture is continuously discharged from the evaporator and sent to a centrifuge or filter for solid-liquid separation. The solid ammonium sulfate crystals are dried and collected for reuse or sale, while the clarified mother liquor is recycled back to the evaporator for further concentration, realizing zero liquid discharge (ZLD).
Ultra Energy-Saving: MVR system reduces steam consumption by 80-90% compared to traditional single-effect evaporators and 50-70% compared to multi-effect evaporators. For large-scale ammonium sulfate crystallization projects, this results in significant operational cost savings and a rapid return on investment.
Anti-Scaling & Anti-Caking Design: High-speed forced circulation creates strong turbulence, preventing ammonium sulfate crystal adhesion and scaling on heating tube walls. Optimized flow velocity and temperature control minimize crystal agglomeration, ensuring stable continuous operation with minimal maintenance.
High Purity Salt Recovery: Equipped with precise crystallization control system, ensuring uniform ammonium sulfate crystal size (0.5-3mm adjustable) and high crystal purity (up to 99.5%+), meeting industrial product standards for fertilizer, chemical, and other applications.
Corrosion & Wear Resistance: All product contact parts are fabricated from high-grade materials (titanium alloy or 316L stainless steel) to resist the corrosive nature of ammonium sulfate solutions. The anti-clogging circulation pump and wear-resistant components ensure long equipment lifespan.
Intelligent Operation & Control: PLC + HMI automatic control system with real-time monitoring of temperature, pressure, concentration, and crystal size. Automatic adjustment of MVR compressor speed and circulation flow ensures optimal crystallization conditions and easy operation.
Environmentally Friendly & Sustainable: Realizes zero liquid discharge (ZLD) of ammonium sulfate wastewater, reducing environmental pollution. The recovered ammonium sulfate can be reused as a raw material, turning waste into resources and improving enterprise resource utilization efficiency.
| Parameter | Specification |
|---|---|
| Feed Capacity | Customizable |
| Evaporation Capacity | 500 – 100000 L/h (varies by wastewater concentration and crystallization requirements) |
| Operating Temperature | 60 – 90°C (Low-Temperature, Gentle Crystallization) |
| Operating Vacuum | -0.06 ~ -0.09 MPa |
| Material of Construction | Titanium Alloy / 316L Stainless Steel (Corrosion-Resistant) |
| MVR Compressor Type | Centrifugal Compressor / Roots Compressor (Customized for Your Application) |
| Crystal Size | 0.5 – 3mm (Adjustable) |
| Crystal Purity | ≥ 99.5% |
| Energy Saving | 80-90% Steam Saving vs. Single-Effect; 50-70% vs. Multi-Effect |
Chemical Industry: Ammonium sulfate wastewater from chemical synthesis, fertilizer production, and fine chemical manufacturing.
Pharmaceutical Industry: Wastewater containing ammonium sulfate from pharmaceutical intermediate and API production.
Power Plant Flue Gas Desulfurization (FGD): Treatment of ammonium sulfate byproduct wastewater from wet flue gas desulfurization systems.
Environmental Protection Projects: Industrial wastewater zero-liquid-discharge (ZLD) systems requiring ammonium sulfate recovery.
We provide end-to-end, turnkey solutions for your Ammonium Sulfate Crystallization MVR Evaporator requirements:
Process Engineering & Design: Detailed feasibility studies, process simulation, and customized system design based on your specific wastewater characteristics, production capacity, and crystallization purity requirements.
Precision Manufacturing: Strict quality control for the MVR compressor, heat exchanger, and all wetted parts to ensure long-term reliability and corrosion resistance.
Global Installation & Commissioning: Professional on-site teams for seamless integration, including system startup, performance testing, and operator training.
Lifelong Technical Support: Comprehensive after-sales service, including spare parts supply, troubleshooting, and remote monitoring to maximize your equipment's operational efficiency and lifespan.
Contact Us Today for a free technical consultation, process simulation, and a customized quotation tailored to your exact Ammonium Sulfate Crystallization needs.
