High-efficiency concentration and dewatering systems engineered for demanding process plants globally.
In modern chemical synthesis, starch processing, food fermentation, and industrial zero-liquid discharge (ZLD) plants, the separation of liquid mixtures and concentration of solute streams are critical steps. Multiple Effect Evaporators (MEE) represent the peak of thermodynamic optimization, designed to reuse the latent heat of vapor across successive evaporation stages (effects) operating under cascading pressure levels. By utilizing the vapor generated from one effect to heat the subsequent effect, MEE systems significantly reduce utility steam consumption, turning energy-intensive operations into highly sustainable industrial processes.
The fundamental driver behind MEE design is the steam economy (defined as kilograms of water evaporated per kilogram of fresh heating steam injected). A single-effect evaporator has a steam economy of roughly 0.9. By configuring a triple-effect, quadruple-effect, or septuple-effect system, the steam economy can scale up to 2.5, 3.5, or even 6.5. This efficiency is achieved by carefully manipulating the operating pressures and corresponding boiling temperatures:
Operating pressure vessels globally requires strict compliance with localized structural safety and hygiene standards. Our evaporators carry certified European CE Markings conforming to the Pressure Equipment Directive (PED 2014/68/EU), ensuring seamless customs clearance and installation inside the European Economic Area (EEA). Furthermore, we supply documentation under ASME (American Society of Mechanical Engineers) Section VIII Division 1, including the prestigious "U" Stamp authorization. Our compliance framework guarantees:
Based in Yixing City, Jiangsu Province—China's premier cluster for heavy industrial fabrication and light machinery—our facility leverages a highly mature supply chain ecosystem. Our 54,000-square-meter modern manufacturing base features automated plate rolling, robotic orbital welding, and state-of-the-art pickling and passivation lines. This localized concentration of raw materials (direct partnerships with top-tier steel mills like TISCO) and skilled chemical engineers reduces lead times by 30-40% compared to Western competitors, while offering highly competitive Capital Expenditure (CAPEX) benefits.
Explore our main processing equipment covering evaporation, dewatering, drying, and refinement.
Zongheng provides energy-efficient, high-performance evaporation solutions including MEE and MVR designs tailored to handle corrosive and highly viscous industrial liquids.
A falling film evaporator efficiently concentrates heat-sensitive liquids. The feed liquid forms a thin film flowing down heated vertical tubes, preserving material properties.
Specially engineered for high fouling fluids. High-velocity recirculation prevents crystallizing solutes from baking onto heat exchanger tubes.
Utilizes a mechanical compressor to recycle secondary steam, driving down utility operation costs (OPEX) by up to 80% compared to traditional thermal setups.
Integrates multiple low-grade waste heat sources, such as flash steam or drying vapors, into the evaporation loop to minimize net external energy inputs.
Provides highly continuous and efficient solid-liquid separation. Perfect for organic slurry dewatering, starch pulp dewatering, and DDGS processing.
Features safe, indirect steam-based heating. Ensures uniform drying of bulk solids under controlled atmospheres, protecting organic value.
Employs high-speed hot air to suspend and fluidize damp material. Delivers instant drying within seconds during transport inside the ductwork.
Engineered for wet starch milling and germ extraction, preserving kernel structures for optimized subsequent separation stages.
Specifically engineered multi-stage hydrocyclones for starch washing, concentration, and purification with high recovery rates.
Our MQG Airflow Dryer utilizes high-speed pneumatic streams to dry damp granules and fine cakes in a fraction of a second. By leveraging variable tube diameters, pressure drops are generated dynamically within the pipeline, forcing continuous tumbling and rapid boundary-layer mass transfer.
This instant contact drying prevents thermal degradation of organic proteins, starches, and delicate mineral salts, making it a staple solution in global modern feed and food processing operations.
Ideal for processing dilute, heat-sensitive feeds. The liquid enters the top distribution head, creating an even, continuous vertical film flowing down the interior of the tube bundle. As steam heats the exterior shell, moisture flashes into vapor in a co-current flow downward.
This system prevents localized hotspot fouling and maintains high heat transfer coefficients ($\text{U-value}$). The continuous, fast-flowing film minimizes fluid residence times in high-temperature zones down to under 60 seconds, safeguarding the bio-availability and color of concentrates.
A trusted global supplier of concentration and thermal separation equipment since 1992.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd (formerly Yixing Yangxi Light Industry Machinery Factory), founded in 1992, is located in Zhoutie Town, Yixing City, on the shores of the beautiful Taihu Lake. The company covers a total layout area of over 54,000 square meters, with state-of-the-art production workshops exceeding 22,000 square meters.
As a member of the China Starch and Alcohol Association, we specialize in high-tech design and fabrication of Category III medium & low pressure vessels, industrial evaporators, and multi-stage bundle dryers. Our equipment is widely utilized in chemical synthesis, food fermentation, bio-ethanol DDGS recovery, pharmaceutical refining, and zero-discharge industrial wastewater reclamation.
Driven by technical innovation and strict compliance benchmarks over three decades.
Our facility expanded to support advanced smart automation, employing 3 senior system engineers, 20+ engineers/assistant engineers, and a total staff of 120 dedicated manufacturing experts.
Obtained international quality assurance certifications (Certificate No.: 45021), aligning our standard operations directly with EU directives and international quality systems.
Formally authorized with the ASME "U" Stamp certification, validating our mechanical engineering capabilities for international markets.
Acquired the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for Class A2 pressure vessel fabrication.
Officially recognized as a High-Tech Enterprise of Jiangsu Province, establishing advanced research links for energy-efficient separation processes.
Took the lead in receiving formal ISO9001 quality system certifications, building systematic tracking for raw materials, operations, and pressure tests.
Established as Yixing Yangxi Light Industrial Machinery Factory, focusing on manufacturing machinery for distilleries and starch plants.
Where our multiple-effect evaporators and dewatering systems make a bottom-line difference.
Starch concentration, glucose, and maltose syrup refining, and high-efficiency washing cycles.
Dewatering fibrous starch pulp using screw presses and tube bundle dryers to convert waste into valuable high-protein feed.
Salt concentration, polymer preparation, and concentration of highly corrosive chemical streams.
Eco-friendly treatment of salty waste streams, reducing volume to solid crystals for eco-compliant disposal.
Proven safety compliance with international design codes.
Information gain on heat recovery and industrial evaporator designs.
Jun 18, 2026
The evaporator absorbs heat to vaporize media, while the condenser releases heat to liquefy vapor; the two perform opposite cooling and heating functions. Operating under low pressure, the evaporator generates cold energy and concentrates solids. Understanding this thermodynamic cycle is key to optimizing thermal energy efficiency inside multi-stage extraction columns...
Get professional, expert answers on thermodynamic evaporator designs, procurement, and operations.
Get in touch with our senior design engineers to receive customized heat-balance calculations, structural drawings, and a detailed price estimate.
Complete your system processing loop with specialized starch and mechanical separation systems.
Zongheng