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Learn More →Modern process industries face critical challenges: strict Zero Liquid Discharge (ZLD) mandates, rising energy costs, and the need for resource recovery. Industrial Evaporator Crystallizers stand at the intersection of thermal separation and recovery engineering, converting complex, concentrated aqueous effluents into purified condensate and high-value dry crystalline salts.
From chemical manufacturing to battery recycling plant discharge, agricultural starch processing, and pharmaceutical concentration loops, selecting the proper evaporator crystallizer technology is paramount. By choosing tailored flow velocities and specific heat transfer configurations, industrial operators significantly reduce fouling rates, optimize steam utility consumption, and guarantee continuous process runtime.
In crystallization processes, the boiling point elevation (BPE) of the solution increases drastically as concentrations approach saturation. Standard falling film evaporators, while highly efficient for pre-concentration, fail when crystals begin to precipitate. Forced circulation evaporators solve this by employing a high-flow recirculating axial pump that maintains system velocity between 1.5 to 3.0 m/s inside the heat exchanger tubes. This prevents localized boiling and scaling on the tube walls, delaying crystallization until the superheated liquid enters the flash separator vessel.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd (formerly known as Yixing Yangxi Light Industry Machinery Factory) is a modern high-tech enterprise specializing in the design, engineering, and manufacturing of concentration, drying, starch refining, alcohol DDGS, and Category III medium & low-pressure vessel equipment.
Located in the famous environmental protection industrial hub of Zhoutie Town, Yixing City, on the shores of Taihu Lake, our company spans over 54,000 square meters, with a dedicated production workshop area exceeding 22,000 square meters. As a proud member of the China Starch and Alcohol Association, our thermal separation systems are trusted globally in food fermentation, petrochemicals, pharmaceuticals, and municipal environmental sectors.
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Specifically engineered to concentrate heat-sensitive liquids. The feed liquid forms a thin film flowing down vertical tubes under gravity, evaporating rapidly with minimum residence time. Essential for pre-concentrating corn steep liquor, starch syrup, and dairy products prior to crystallization.
Designed to handle high viscosity, salting, scaling, and solid-precipitating liquids. By utilizing high capacity axial-flow pumps to force recirculation through the heat exchanger, crystallization occurs in the separation separator rather than on heat-transfer surfaces.
MVR technology drastically reduces energy consumption by recycling the latent heat of secondary steam. A mechanical compressor elevates the temperature and pressure of the waste vapor, reintroducing it as the heating medium. This eliminates the need for fresh boiler steam during stable operation.
Jiangsu Zongheng provides a complete turnkey process line. In starch and alcohol DDGS plants, corn is first cracked by our precision Degerming Mill Machine. Starch particles are subsequently washed and refined using the multi-cyclone Starch Washing Cyclone system. Fibers are dewatered via the Single Screw Press to reduce mechanical moisture to the lowest possible level before entering the ZXG Tube Bundle Dryer or MQG Airflow Dryer. The liquid phase containing dissolved solids is concentrated in our high-performance MVR Evaporation Plant, ensuring full resource loop closure.
Integrating multi-effect and MVR evaporation plants to concentrate thin stillage into syrup, which is subsequently blended with wet distillers grains. This process reduces energy costs in the production of high-protein animal feed (DDGS).
Deploying specialized alloy (Titanium Grade 2, Hastelloy C276, and Duplex Steel 2205) Forced Circulation Evaporator Crystallizers to handle corrosive sodium chloride (NaCl) and sodium sulfate (Na2SO4) brines, ensuring complete compliance with European chemical discharge limits.
Evaporator crystallizers play a critical role in hydrometallurgical recycling facilities. They concentrate and crystallize cobalt sulfate, nickel sulfate, and lithium carbonate salts from chemical extraction streams, achieving a closed-loop battery material cycle.
Yixing, Jiangsu is recognized globally as China's premier hub for environmental protection and industrial pressure vessel manufacturing. This dense localized industrial cluster gives Jiangsu Zongheng an unparalleled advantage: immediate access to high-grade raw steel suppliers, specialized alloy casting houses, and advanced welding engineering resources.
By keeping design, fabrication, machining, assembly, and testing in-house, we eliminate intermediate logistics delays. Our ASME-certified facility guarantees high welding quality, rigorous NDT (Non-Destructive Testing), and precise component sizing, offering international buyers a significant price-to-performance ratio without compromising structural safety.
The company covers over 54,000 m², with workshop space exceeding 22,000 m². Employing 3 senior engineers, 20+ engineers/assistants, and 120 staff, utilizing advanced digital twins for sizing crystallizer units.
Obtained international quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with international process standards.
Acquired the ASME "U" Stamp authorization, marking our capability to manufacture international-standard thermal separation vessels and high-pressure evaporators.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42), authorizing the build of Class III pressure vessels.
Officially certified as a Jiangsu Provincial High-Tech Enterprise, recognizing our innovations in mechanical vapor recompression and energy-saving drying design.
Took the lead in obtaining ISO9001 certification, standardizing manufacturing quality management across all mechanical drying and evaporator production lines.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd, formerly known as Yixing Yangxi Light Industrial Machinery Factory, was established. Starting with 45 employees and an area of approximately 15 mu.
At Jiangsu Zongheng, our R&D roadmap focuses on carbon reduction and system intelligence. The future of industrial crystallization lies in dynamic automation and energy efficiency. We are integrating IoT sensors into our crystallization loops to continuously monitor boiling point rise and feed concentrations in real-time, allowing operators to preemptively adjust pump velocities and prevent heat exchanger fouling.
Additionally, we are partnering with leading institutes to pioneer hybrid MVR-membrane setups. By pre-concentrating wastewater streams via high-pressure membranes, the thermal load on the MVR evaporator crystallizer is reduced by up to 50%, setting new performance benchmarks for heavy industries globally.
Jiangsu Zongheng provides comprehensive engineering services, including custom material selections (such as SS316L, Titanium, Duplex 2205, and Hastelloy), sizing calculations, FAT/SAT testing, and global installation supervision. Contact our engineers today to discuss your process requirements.
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