Utilizing advanced vapor recovery systems such as Mechanical Vapor Recompression (MVR) and Multi-Effect evaporation to compress steam consumption and reduce operational costs by up to 60% compared to traditional configurations.
Our design, material sourcing, welding procedures, and quality inspections rigorously align with ASME Section VIII Div 1 (U stamp holder) and CE PED regulations for high-pressure industrial environments.
Every system is designed with specific hydrodynamic profiles and boundary layer shear-rate optimizations. This minimizes fouling coefficients when processing high-viscosity, high-scaling, or crystalline slurries.
Forced circulation evaporators are critical in processing viscous materials, salt solutions, and crystalline suspensions. Unlike falling film systems, forced circulation keeps the liquid velocity inside the heat exchanger tubes high (typically 2.0 to 3.5 m/s) using high-capacity axial flow pumps. This suppressive boiling phenomenon prevents vaporization inside the tubes, shifting boiling exclusively to the separator vessel, thereby eliminating tube-fouling and scaling.
Jiangsu Zongheng integrates state-of-the-art computational fluid dynamics (CFD) modeling to analyze pressure drops, vapor velocities, and slurry retention profiles within the flash chamber to optimize separation efficiency.
Our evaporator lineup includes Falling Film Evaporation Plants, Forced Circulation Evaporation Plants, MVR configurations, and Waste Heat Evaporators. Engineered to achieve precise concentration targets, these systems excel in handling complex fluid properties including high boiling point elevations and thermal sensitivities. By recycling latent heat within vapor compression systems, our plants optimize thermal performance and steam conservation.
Key Applications: Dairy and starch concentration, chemical wastewater Zero Liquid Discharge (ZLD), lithium battery recycling wash water recovery, and pharmaceutical fermentation broth concentration.
The global processing industries are experiencing structural transformations driven by strict environmental mandates and energy cost pressures. Industrial thermal separation processes, particularly evaporative concentration and crystallization, are key target areas for system integration and performance refinement. Systems like the Forced Circulation Evaporator are seeing rising adoption as chemical manufacturers transition toward closed-loop water cycles and Zero Liquid Discharge (ZLD) systems.
In traditional multi-effect evaporation configurations, primary steam usage escalates significantly with each concentration stage. The contemporary market demands integration with Mechanical Vapor Recompression (MVR). MVR systems utilize centrifugal compressors or high-pressure fans to elevate the enthalpy of the exhaust vapor, feeding it back into the process as heating steam. This saves up to 90% of cooling water and up to 60-70% of live steam. Our engineering team at Jiangsu Zongheng focuses on combining forced circulation dynamics with high-capacity MVR compressors, ensuring that even under severe boiling point elevations, our equipment achieves reliable, high-purity crystalline separation.
Furthermore, automation and digital control integration (PLC/DCS) have shifted from simple loop control to predictive, self-optimizing algorithms. Real-time monitoring of boiling point elevation (BPE), viscosity changes, and scaling thickness allows operators to schedule Clean-in-Place (CIP) intervals efficiently, minimizing downtime and maintaining high thermal conductivity.
Procuring a high-capacity evaporation or drying plant involves evaluating long-term operational expenditures (OPEX) alongside capital costs (CAPEX). High-performance systems require rigorous material selection to withstand chloride-induced pitting, stress corrosion cracking (SCC), and general structural degradation. We utilize high-grade alloys, including Duplex Stainless Steels (e.g., SAF 2205, SAF 2507), Titanium Grade 2, and Hastelloy C-Series, particularly for high-salinity industrial wastewater and starch conversion plants.
When selecting a supplier, global procurement directors look for: A. Code and Regulatory Compliance: Strict compliance with the ASME Section VIII division 1 code (evidenced by our ASME U Stamp) and CE PED certification ensures pressure vessels can be deployed globally. B. Structural Robustness: Fluid flow paths must be engineered to prevent high-velocity erosion on tube sheets and return bends. C. Scale and Production Capacity: The factory must have heavy fabrication capabilities, specialized automated welding facilities, and non-destructive testing (NDT) capabilities including radiographic, ultrasonic, and dye-penetrant testing.
At Jiangsu Zongheng, our Yixing production facility spans over 54,000 square meters, housing advanced plate-rolling, tube-bending, automated plasma-arc welding, and large-scale annealing furnaces to stress-relieve finished vessel designs prior to pressure testing.
Industrial evaporation systems are core components in broader process lines. In the starch and corn processing sector, for instance, wet milling relies on multi-stage processes. Following initial cleaning and steeping, our YDX Starch Washing Cyclone system ensures precise purification by separating fiber and protein impurities from the starch slurry. The remaining solubles are concentrated through our energy-efficient falling film or forced circulation evaporators to produce high-value DDGS (Distillers Dried Grains with Solubles).
For moisture reduction in fibrous by-products, the Jiangsu Zongheng Single Screw Press delivers mechanically driven dewatering. This reduces the energy load on thermal drying equipment. The dewatered solids are then processed through our ZXG Tube Bundle Dryer or MQG Airflow Dryer, which fluidize and dry the material using low-oxygen indirect steam or high-speed hot air paths, yielding a uniform dry product.
In environmental wastewater treatment, our forced circulation evaporators serve as the core of industrial crystallization units. By concentrating sodium chloride, sodium sulfate, and mixed salts to their saturation points, we enable fractional crystallization. This recovers clean condensate for industrial reuse and generates solid dry cake for disposal or commercial sale, closing the Loop for chemical, textile, and mining plants.
International industrial capital projects require reliable localized technical support and engineering accountability. Jiangsu Zongheng has established a global project delivery framework. From initial feed testing and laboratory-scale process simulation to site installation supervision, commission, and operator training, we minimize technical risks at every phase.
Quality assurance is backed by our certifications. Our ISO9001 registration (established in 2002) ensures consistent tracking of raw materials from mill source to final hydrostatic pressure test. Our ASME "U" stamp authorization (granted in 2012) and CE compliance documentation verify that our calculations, weld quality, and structural margins satisfy international regulations. This simplifies site approvals with national safety inspectors, whether the system is installed in North America, Western Europe, or the Asia-Pacific region.
Our R&D roadmap focuses on: I. Hybrid Crystallization Layouts: Integrating falling film evaporators (for pre-concentration) with forced circulation crystallizers (for final crystal growth) to balance energy efficiency and scaling resistance. II. Low-Temperature Multi-Effect Integration: Utilizing waste heat sources down to 50°C from other plant processes to drive concentration stages, eliminating the need for primary live steam. III. Advanced Non-Stick Coating Technologies: Testing ceramic-based and polymer-based thin-film tube interior coatings to decrease adhesion parameters and extend operational cycles in high-protein or organic solutions. IV. Automated Purge and Decant Logic: Utilizing sensor-driven density measurements to manage solid discharge cycles automatically, maintaining the optimal solid-liquid ratio within the draft tube crystallizers.
Falling film evaporators rely on gravity to distribute a thin liquid film down the inner walls of the vertical tubes. This design is highly efficient and offers short residence times, making it ideal for low-viscosity, heat-sensitive fluids. However, it is prone to dry-spots and scaling. Forced circulation systems use high-performance recirculating pumps to drive fluid through the tubes at high speeds, maintaining high pressure to suppress boiling inside the tubes. Boiling occurs only upon entering the separator chamber, making forced circulation the preferred choice for scaling, high-viscosity, and crystalline mixtures.
In conventional thermal separation, vaporized water is condensed in a condenser, and its latent heat is lost to cooling water. An MVR system uses a mechanical compressor or turbo blower to compress the low-pressure vapor, raising its temperature and pressure. The compressed vapor is then fed back to the steam chest of the same evaporator to act as the heating medium. This cycles the latent heat within the process, requiring electrical energy only to run the compressor rather than constant high-pressure primary steam supply.
Erosion-corrosion is mitigated through fluid velocity optimization and material selection. We design pump speeds to maintain velocities above the settling limit but below the threshold that causes mechanical wear on piping and tube bends. Additionally, we use thicker sacrificial wear zones, tangential inlet configurations in crystallizer vessels, and high-hardness alloys like Duplex 2205/2507 or customized cladding techniques to protect critical components.
We hold the ASME "U" Stamp Authorization certificate for pressure vessels, the Special Equipment Manufacturing License of the People's Republic of China (License No: TS2232C42), CE PED compliance certification, and international quality management system certification under ISO 9001 (Certificate No: 45021).
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd (formerly Yixing Yangxi Light Industry Machinery Factory) was founded in 1992. The company is located in Zhoutie Town, Yixing City, Jiangsu Province, on the shores of Taihu Lake. Our modern, high-tech manufacturing facility spans over 54,000 square meters, with a dedicated production workshop area of over 22,000 square meters.
We specialize in the design, engineering, and manufacturing of concentration, drying, starch processing, alcohol DDGS, and Category III medium and low-pressure vessel equipment. As a member of the China Starch and Alcohol Association, our products are widely utilized in food fermentation, bio-processing, industrial chemicals, pharmaceutical manufacturing, petrochemicals, and environmental protection projects worldwide.
Read Our Story
Today, our operations cover over 54,000 square meters of facilities with 22,000 square meters of production space. Our team includes 3 senior engineers, over 20 engineers, and a total staff of 120 specialists delivering advanced concentration technology.
Obtained international quality system certification (Certificate No: 45021), establishing a complete quality assurance workflow aligned with international standards.
Acquired the ASME "U" Stamp authorization, marking the entry of our high-pressure vessels and evaporative equipment into the international heavy chemical market.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No: TS2232C42), authorizing the manufacture of specialized industrial pressure equipment.
Officially recognized as a High-Tech Enterprise by the Jiangsu Provincial Department, highlighting our engineering design achievements and patents.
The company took the lead in obtaining ISO9001 certification, standardizing manufacturing steps from incoming steel inspection to final delivery.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd was established (formerly known as Yixing Yangxi Light Industrial Machinery Factory), starting with 45 employees and a 15 mu site footprint.
Jun 18, 2026
We warmly welcome friends from various industries, both domestic and international, to visit us for cooperation and mutual development!
Request a quoteGet to know our detailed contact information, site coordinates, and engineering consultation hotlines.
View Details
Zongheng
