Explore our elite engineering portfolio of primary product offerings tailored for global starch, industrial fermentation, alcohol DDGS, and liquid concentration sectors.
Industrial evaporation demands severe focus on energy efficiency. Multi-effect evaporation, specifically the Double-Effect Evaporator, remains a thermodynamic gold standard for processing heat-sensitive feed liquors, organic waste streams, and concentrated food products. In a double-effect configuration, liquid concentration occurs in two successive stages (effects), where the secondary vapor generated in the first effect acts as the primary heating medium for the second effect.
By operating the second effect under a higher vacuum (and consequently, a lower boiling temperature), the temperature gradient ($\Delta T$) is maintained without requiring additional live steam. This thermal cascading achieves a Specific Steam Consumption (SSC) of approximately 0.5 to 0.55 kg of live steam per kg of evaporated water, yielding a nearly 50% energy saving compared to conventional single-effect systems.
Specially engineered tangential vapor separators reduce liquid droplet entrainment, achieving separation efficiencies above 99.9% and preventing product loss.
Offered in high-grade Titanium, Duplex Stainless Steels (e.g., 2205), and Hastelloy to combat chloride-induced pitting and severe chemical corrosion.
Integrated SCADA/DCS systems automatically adjust vacuum pressures, steam supply valves, and feed rates to prevent boiling dry or tube fouling.
How engineering procurement officers navigate CAPEX, OPEX, and compliance standards when selecting Chinese manufacturers.
Procurement teams must analyze life-cycle costs. While falling film double-effect evaporators demand precision manufacturing (increasing initial CAPEX), their low steam consumption and minimal maintenance translate to unmatched OPEX savings over a 20-year service life.
For global installation, pressure vessels must comply with strict international regulatory codes. Top-tier Chinese manufacturers hold the ASME "U" stamp authorization, CE certification under the PED directive, and ISO9001 quality system standards to guarantee safe operation under high pressure.
Whether processing corn steep liquor, starch washing water, or pharmaceutical intermediate fractions, a manufacturer's capacity to design custom column geometries and heat transfer areas (ranging from 100 m² to over 8000 m²) is essential for long-term scalability.
| Evaporation Technology | Typical Steam Economy | Suitability for Viscous Fluids | Thermal Degradation Risk | Ideal Application Areas |
|---|---|---|---|---|
| Double-Effect Falling Film | 1.8 - 2.0 (Water evaporated per steam unit) | Moderate (up to 150 cP) | Very Low (short residence time) | Starch sweetening, juices, chemical separation |
| Forced Circulation (Double-Effect) | 1.7 - 1.9 | Excellent (up to 1000 cP) | Low to Moderate | Salting wastewater, high-fouling slurries, crystallization |
| Mechanical Vapor Recompression (MVR) | 10 - 20 (Equivalent steam efficiency) | Moderate | Low | Large-scale starch washing, environmental wastewater |
| Waste Heat Evaporator | Utilizes secondary/flue streams | Low to Moderate | Low | DDGS distilleries, corn steep liquor concentration |
In modern wet milling and grain processing factories, evaporation plants do not operate in isolation. They form the core of a highly integrated mechanical processing loop designed to refine corn, wheat, or cassava into pure starches, proteins, and high-value coproducts.
Our structural process loop begins at the Degerming Mill Machine, which separates the corn kernels to isolate the valuable germ without breaking the fiber matrix. The slurry is then routed through the YDX Starch Washing Cyclone system, where multiple micro-cyclone stages utilize centrifugal forces to separate starch milk from gluten, proteins, and soluble impurities under high fluid pressure.
Established in 1992, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. is a leading high-tech enterprise specializing in heavy industrial evaporation, drying, and pressure vessel manufacturing.
Founded as Yixing Yangxi Light Industry Machinery Factory, commencing dedicated fabrication of light industry concentration equipment on the shores of Taihu Lake.
Pioneered quality control in the region by acquiring formal ISO9001 international quality management certification, establishing a robust quality assurance framework.
Officially recognized as a "Jiangsu Provincial High-Tech Enterprise" for innovations in energy-efficient evaporator designs and tube bundle dryers.
Obtained the ASME "U" Stamp authorization, validating our welding and engineering standards for global pressure vessel delivery.
Operating a 54,000+ m² modern facility with over 120 dedicated staff, supplying evaporators, starch washing lines, and dryers to global processing markets.
The global push for carbon-neutral industrial processing is reshaping evaporator design. Traditional multi-effect steam-heated systems are evolving to integrate advanced thermal recovery technologies. Our engineering division has identified three main technical trends guiding modern projects:
Hybrid MVR and Multi-Effect Systems: In applications with high boiling point elevation (BPE) or high viscosity, a standalone MVR system may struggle. Designing a hybrid layout where a double-effect evaporator is coupled with a Mechanical Vapor Recompression compressor allows plants to handle the initial concentration stage using low-power electricity, before switching to steam for the final concentration.
Ensuring seamless installation, commissioning, and operational compliance across international borders.
Our expert team of commission engineers provides complete on-site supervision of piping, electrical, structural, and control systems. We conduct rigorous hydrostatic tests, dynamic vacuum checks, and water-run simulations before introducing product feeds to ensure smooth plant start-ups.
We manage compliance across multiple standards. Our pressure vessels are designed, inspected, and stamped under the ASME Section VIII Div 1 code, European CE-PED directives, and local pressure vessel regulations, backed by certified raw-material trace reports.
Answers to key technical questions from procurement specialists and process engineers.
Maximize your processing plant's throughput and efficiency with our integrated dewatering, milling, and refining systems.
Partner with Jiangsu Zongheng. Consult with our senior thermal design engineers today to configure a custom Double-Effect or MVR Evaporator plant matching your exact process constraints.
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