Engineered to achieve maximum thermal efficiency and high stability. Direct factory sourcing from China's premier manufacturer.
Originally established in 1992 as the Yixing Yangxi Light Industry Machinery Factory, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. has evolved into a modern, high-tech manufacturing leader. Situated in Zhoutie Town, Yixing City on the picturesque shores of Taihu Lake, we run a modernized production base structured specifically to build industrial-scale pressure vessels and complex thermal systems.
We are a designated member of the China Starch and Alcohol Association, focusing our design and engineering resources on Category III low & medium pressure vessels. Our engineering ecosystem caters to major industries worldwide, supporting process operations in food fermentation, bio-alcohol manufacturing, fine chemicals, environmental wastewater treatment, and petrochemical processing.
Unravelling the thermodynamic and mechanical developments transforming industrial evaporation systems globally.
Mechanical Vapor Recompression (MVR) represents the modern peak of plant energy efficiency. By utilizing a high-efficiency centrifugal compressor or roots blower to compress clean process steam, the system raises the temperature and enthalpy of the secondary vapors. This compressed steam is fed back into the heating side of the exchanger, virtually eliminating external live steam requirements and cutting operational utilities cost by up to 60%.
For thermally unstable materials, Falling Film Evaporation is vital. By introducing the feed at the top of the vertical heating tubes, an uniform liquid film flows downward along the inner tube walls. Vaporization occurs rapidly inside the falling film. The minimized residence time combined with optimized low-pressure operating parameters prevents thermal degradation and preserves product purity, making it ideal for food, pharmaceuticals, and starch refining.
Designed to handle high viscosity, crystallization, and severe scaling media. By integrating high-capacity axial flow circulation pumps, the liquid velocity inside the heat exchanger tubes is maintained at a fast pace. This turbulent velocity increases heat transfer efficiency while scrubbing the inner tube walls dynamically, minimizing fouling tendencies in DDGS spent wash and chemical crystallization cycles.
Procuring capital-intensive industrial process equipment from overseas involves navigations around quality verification, code compliance, and structural integrity. Global engineering leads face three main challenges:
At Jiangsu Zongheng, our engineers utilize computerized thermal and structural calculations to model mass flow rates, vapor densities, and thermal stress. Our modern manufacturing base handles direct processing from raw steel plate to finalized, surface-treated pressure vessels with total transparency.
Exploring the mechanical architecture and process dynamics of our high-performance product range.
Operating via indirect steam heating, the Jiangsu Zongheng ZXG Tube Bundle Dryer is engineered for safe, low-oxygen drying of bulk organics. The product is fed into a stationary horizontal shell containing a rotating tube bundle. Steam enters the tubes, transferring thermal energy through conduction as the material is tumbled. Excellent steam consumption efficiency (1.2 to 1.3 kg of steam per kg of water evaporated) makes it a staple for starch, maize germ, and gluten drying.
The MQG Airflow Dryer utilizes high-speed hot air to suspend and fluidize damp particulate matter. Through an impulse airflow pattern induced by shifting tube diameters, particles are accelerated and decelerated continuously. This mechanical movement creates high boundary-layer heat transfer, enabling complete flash drying in seconds. The unit is self-regulating, yielding uniform moisture exit profiles for high-throughput starch and fiber applications.
Designed for heavy mechanical dewatering prior to thermal drying. Featuring a tapered, variable-pitch screw rotating inside a cylindrical screen cage, it exerts increasing pressure on the passing material. Feed slurries are compressed, separating the liquid phase through the screen. This system significantly drops thermal energy requirements downstream by mechanical moisture extraction.
Refining starch requires precise density separation. Our YDX Starch Washing Cyclone utilizes multi-stage centrifugal force inside hydrocyclone tubes. It forces heavier, purified starch granules outward against the wall, while lighter proteinaceous impurities, fibers, and soluble starches exit via the overflow. Constructed in premium stainless steel, it guarantees high starch purity and yield.
This design integrates multiple waste heat sources, such as flash steam, drying vapors, or boiler exhaust gases. By utilizing waste energy instead of primary boiler steam, plants can concentrate low-solid wastewater or process streams at negligible operational costs. It features custom pass arrangements to capture maximum heat transfer while working with variable waste-energy inputs.
Specifically engineered for precision maize processing. The mill fractures pre-soaked corn kernels to free the germ intact without crushing the oil-bearing embryo. Centrifugal impact and adjustable rotor speeds allow plant operators to calibrate clearances, ensuring high starch yield and premium germ recovery rates.
Over three decades of manufacturing excellence, safety compliance, and technological leaps.
Established as Yixing Yangxi Light Industrial Machinery Factory in Zhoutie Town, launching with 45 employees and 15 mu of land.
Acquired ISO9001 Quality Management Certification, standardizing internal design, production, and quality assurance processes.
Accredited as a "Jiangsu Provincial High-Tech Enterprise", recognizing our patents in energy-efficient separation systems.
Obtained the Special Equipment Manufacturing License of the People's Republic of China for Category II and III pressure vessel vessels.
Authorized to apply the ASME "U" Stamp. This opened global doors for supplying industrial heavy equipment to North America, Europe, and the Middle East.
Awarded international quality system certificate 45021, aligning our internal management with international industrial procurement standards.
Operates a production plant spanning 54,000+ m² with 22,000+ m² workshop floor, employing over 20 professional design engineers and 3 senior fellows.
Delivering process performance across diverse biological, chemical, and municipal treatment operations.
In dry-mill corn ethanol plants, recovering dissolved organics is critical to economic viability. Our multi-effect falling film and forced circulation evaporators efficiently concentrate spent thin stillage into syrup. The syrup is then blended with wet cake and dried in our ZXG Tube Bundle Dryer to yield high-protein DDGS (Distillers Dried Grains with Solubles), maximizing plant yields.
Processing corn, cassava, and potato starch requires sanitary, high-volume concentration systems. We deliver complete concentration solutions for glucose, maltose, and organic acids. Utilizing low-temperature falling film evaporators keeps structural denaturation low, preventing color changes and starch caramelization while yielding premium food-grade products.
Fulfilling environmental mandates for Zero Liquid Discharge (ZLD) requires heavy separation. Our MVR concentration and crystallizer systems process highly concentrated, salt-laden industrial effluents. By vaporizing pure condensate for plant recycling and isolating salts, we help chemical plants achieve absolute liquid discharge compliance.
The industrial landscape is moving rapidly toward carbon neutrality and smart automation. Jiangsu Zongheng’s research and development division is pioneering two primary directions to meet future global criteria:
1. Intelligent Diagnostic Systems: Integrating smart array sensors within our falling film tubes to evaluate liquid distribution in real-time. By monitoring changes in heat flux and surface pressure, our system predicts fouling and alerts maintenance before scale buildup compromises thermal efficiency.
2. Hybrid Thermal Systems: Combining mechanical vapor recompression with solar thermal collectors or high-temperature heat pumps. This hybrid approach enables complete independence from traditional coal or gas boilers, allowing zero-emission evaporation processes.
Rigorous quality checks ensuring safe operation under heavy high-pressure environments.
Authorized to manufacture vessels under the ASME "U" Stamp. Every calculation, weld, and non-destructive examination (NDE) is verified by an Authorized Inspector to guarantee vessel safety.
Complies with the European Union’s Pressure Equipment Directive (PED). Our equipment meets all mechanical, electrical, and thermal safety criteria required for operation in Europe.
Our facility runs in-house NDT testing, including radiographic examination (RT), ultrasonic inspection (UT), magnetic particle inspection (MT), and liquid penetrant testing (PT) for all welds.
All structural and process-contact welds are executed by certified technicians trained in exotic alloys (TIG/MIG welding for Duplex, Super Duplex, Titanium, and Hastelloy).
Answers to common thermal separation questions from design engineers and procurement directors.
Explore our complete range of specialized equipment designed for industrial drying, pressing, and corn processing.
Collaborate with Jiangsu Zongheng’s senior engineering team to design custom evaporators, drying plants, or screw presses that match your process targets.
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