Industrial evaporation technologies form the thermodynamic backbone of modern processing plants. As global focus intensifies on resource recovery and green industrial processing, the integration of systems like Mechanical Vapor Recompression (MVR) and falling film evaporators has evolved from a regulatory compliance cost to a core strategy for energy savings and sustainable competitiveness.
Traditional multi-effect thermal systems consume massive quantities of live steam. Today's manufacturing landscape demands systems capable of utilizing low-grade waste heat, mechanical steam recompression, and optimized boundary layer flow. This dramatically lowers the primary energy inputs required for concentration and drying, directly contributing to decreased carbon intensity footprint.
Working in corrosive, high-solid environments requires meticulous metallurgy and precision design. The selection of materials such as Duplex Stainless Steel, Titanium alloys, and Hastelloy, combined with ASME "U" Stamp manufacturing standards, ensures that equipment can withstand scale-forming liquors, abrasive crystals, and high pressure fluctuations without premature failure.
Jiangsu Zongheng Industrial Evaporation Technology: Provides high-performance, custom-configured thermal separation solutions. High heat-transfer coefficients and low utility requirements.
Falling Film Evaporation Plant: Engineered specifically for heat-sensitive liquids. Distributes a thin film down heated vertical tubes, ensuring very short residence times and preventing product degradation.
Forced Circulation Evaporation: Built to process high-fouling, viscous, and crystallizing liquids using high-velocity pumps that suppress boiling inside the heat exchange tubes.
MVR Evaporation Plant: Leverages Mechanical Vapor Recompression to compress and reuse exhaust vapor, reducing steam consumption by up to 90%.
Waste Heat Evaporator: Integrates low-grade heat sources, including dryer exhaust vapors and flash steam, to drive the concentration process.
Jiangsu Zongheng Single Screw Press: Efficiently dewaters high-solid fibrous suspensions like corn germ, fiber, starch feeds, and chemical pulp.
Designed with progressive pitch screws and adjustable backpressure cones to compress solids dynamically. Maximizes liquid extraction prior to thermal drying, drastically reducing the overall thermal load on downstream equipment.
ZXG Tube Bundle Dryer: Provides indirect steam contact drying for free-flowing bulk materials. Operates at low oxygen levels and high thermal efficiency.
Industrial Airflow Dryer: Imploys high-velocity hot air to fluidize, convey, and dry wet particulate materials instantly.
Degerming Mill Machine: Essential for precision maize processing, optimizing germ separation with minimal starch loss.
Starch Washing Cyclone: Precision multi-stage hydrocyclone systems engineered for high efficiency wash cycles.
The MQG Airflow Dryer employs high-speed hot air to suspend and fluidize materials instantly. By utilizing impulse airflow generated from precisely varied tube diameters, it continuously tumbles the particles while conveying them. This design ensures rapid, uniform, and efficient drying throughout the entire transportation process within the system.
| Drying Time | 0.5 - 2 Seconds (Instantaneous) |
| Heat Exchange Mode | Direct Convective Fluidization |
| Application Scope | Corn Starch, Cassava Starch, Gluten, Feed Fiber |
A falling film evaporator efficiently concentrates heat-sensitive liquids. The feed liquid forms a thin film flowing down heated vertical tubes, where it partially evaporates. Vapor generated flows parallel to the liquid, enhancing the process. It ensures a short residence time and low operating temperature, preserving product quality. The system requires proper liquid distribution and complete surface wetting to prevent fouling and maintain high thermal efficiency and operational stability.
| Flow Regime | Gravity-driven co-current film flow |
| Fouling Prevention | Precision distribution plates & continuous wetting |
| Suitable Materials | Corn steep liquor, starch syrup, fruit juices, dairy |
For industrial manufacturing plants in starch, ethanol DDGS, and food fermentation sectors, achieving optimal energy balance requires a systemic approach that links mechanical extraction, vapor compression, and low-grade heat recycling.
Maximizing water removal via mechanical force before applying thermal energy is key. Utilizing the Single Screw Press, fibrous feeds and corn germ are compressed, reducing the inlet moisture of wet feeds from 80% down to under 50%. This drastically cuts downstream thermal consumption.
The liquid extract from dewatering and washing contains valuable dissolved solids. Falling Film and MVR Evaporators concentrate this dilute stream. MVR vapor recompression recovers 95% of latent heat, raising the solids concentration efficiently without high live steam usage.
Concurrently, the dewatered solids are sent to the ZXG Tube Bundle Dryer or Airflow Dryer. These systems utilize low-pressure steam or hot air to bring the product to its final stable moisture level, while any exhaust steam is returned to the waste heat evaporator.
The company covers a total area of over 54,000 square meters, with production workshop space exceeding 22,000 square meters. It currently employs 3 senior engineers and over 20 engineers and assistant engineers, with a total staff of 120 people.
International quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with international standards.
Acquired the ASME "U" Stamp authorization, marking the company's entry into a new phase of high-end pressure vessel development.
The company obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for pressurized industrial systems.
Recognized for technology investment and design patents, establishing Yixing as a recognized center for thermal concentration equipment.
The company took the lead in obtaining ISO9001 standard compliance, establishing systematic production lines and strict traceability controls.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd, formerly known as Yixing Yangxi Light Industrial Machinery Factory, was established in 1992. The company covered a total area of approximately 15 mu and had a total of 45 employees.
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 an area of over 54,000 square meters, with a production workshop area of over 22,000 square meters.
Jiangsu Zongheng is a modern high-tech enterprise specializing in the manufacturing of concentration, drying, starch industry, alcohol DDGS, and Category III medium & low-pressure vessel equipment. It is currently a member enterprise of the China Starch and Alcohol Association. Its products are widely used in industries such as food fermentation, alcohol, chemical, pharmaceutical, environmental protection, and petrochemical.
Standardized Class-III Pressure Vessel Design & ISO Certification
Every industrial evaporator and pressure drying unit constructed in our facility undergoes rigorous non-destructive testing (NDT), hydrostatic stress testing, and thermal profile calculation. We align our manufacturing processes directly with ASME "U" Stamp specifications and ISO 9001:2015 frameworks to guarantee safe operations globally.
A falling film evaporator distributes the feed liquid so that it flows downwards as a thin, continuous film on the interior walls of heated vertical tubes. Because the liquid travels rapidly under gravity and co-current vapor shear, the total residence time in the heat zone is extremely short (often a matter of seconds). This prevents thermal degradation of heat-sensitive materials such as starch sugars, corn steep liquor, and food proteins while maintaining a high heat-transfer coefficient.
MVR systems use a mechanical compressor or fan to compress the low-pressure vapor evaporated from the product. Compression increases both the pressure and temperature of the vapor, allowing it to be reused as the heating medium in the same evaporator. This closed-loop thermal cycle eliminates the need for continuous live steam consumption during steady-state operations, saving up to 90% in thermal energy costs compared to traditional single-effect evaporators.
Forced Circulation Evaporators are preferred when processing materials that are highly viscous, contain high concentrations of suspended solids, or are prone to crystallization and scaling. By using high-capacity circulation pumps, the liquid velocity inside the heat exchange tubes is kept very high (typically 2-3 m/s). This high velocity suppresses boiling inside the tubes (boiling occurs only in the separator vessel), preventing scale buildup on the tube walls.
Drying water from solid streams thermally is highly energy-intensive. A Single Screw Press uses continuous mechanical compression to squeeze unbound water out of fiber, germ, and pulp matrices. For instance, reducing the moisture of corn fiber feed from 80% to 50% prior to entering a Tube Bundle Dryer reduces the thermal load on the dryer by more than half, resulting in significant steam and fuel savings.
Depending on the chloride levels, acidity, and chemical compositions of the industrial wastewater, we select specialized alloys including 304/316L Stainless Steel, Duplex Stainless Steel (such as 2205), Titanium, and Hastelloy. This careful selection ensures long-term resistance to corrosion and pitting in harsh industrial environments.
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 process fluids, while the condenser acts as the primary heat rejection mechanism. Balancing these two thermodynamic phases is essential for maximizing overall thermal performance and ensuring system efficiency.
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