Founded in 1992, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. (originally Yixing Yangxi Light Industry Machinery Factory) has evolved into a premier high-tech enterprise. Over the past three decades, we have dedicated ourselves to the development, design, and manufacture of high-performance concentration, thermal drying, and starch processing equipment.
Located in Yixing City on the shores of Taihu Lake, our facility spans a modern 54,000 square meters with more than 22,000 square meters of specialized production workshops. We serve a vital role as members of the China Starch and Alcohol Association, developing key heavy-duty chemical systems, starch extraction assemblies, and DDGS systems.
MVR systems recycle secondary vapor by using a centrifugal compressor or steam blower to increase vapor pressure and temperature. This significantly reduces steam consumption compared to multi-effect setups, lowering energy costs in environmental wastewater, distillery wash, and chemical recovery applications.
Optimized for continuous, low-oxygen processing of granular and bulk materials like corn gluten, germ, and DDGS. Utilizing indirect steam heating through a rotating bundle of inner tubes, it ensures uniform moisture removal, prevents oxidation, and keeps thermal consumption exceptionally low.
Specially engineered for processing heat-sensitive fluids. Liquid forms a continuous, uniform film down vertical tubes, enabling high heat-transfer coefficients at low temperature differences. Short residence times protect product characteristics in food, dairy, and starch syrup processes.
Jiangsu Zongheng's MQG Airflow Dryer employs high-speed hot air to suspend and fluidize materials. By utilizing impulse airflow generated from precisely varied tube diameters, it continuously tumbles particles while conveying them. This design ensures rapid, uniform, and efficient drying throughout the transportation process within the system.
Widely deployed in starch manufacturing, animal feed production, and pharmaceutical chemical processes, the system is designed to handle varying bulk densities and wet inputs. The specialized internal geometry maximizes air-to-material exposure, helping operators achieve consistent outlet moisture levels without thermal degradation.
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 dry spots, fouling, and tube scaling. By utilizing advanced liquid distributors and optimized tube configurations, Jiangsu Zongheng guarantees high thermal efficiency and long operational cycles for starch syrup, biochemical fractions, and organic residues.
Located in Yixing, Jiangsu's industrial manufacturing hub, we source premium raw materials and high-alloy steels (including 304, 316L, duplex steels, and titanium) at competitive rates. Our complete in-house fabrication, heavy machining, plate rolling, and automated tube-to-tubesheet welding shops control lead times and maintain rigorous quality standards.
We build systems to international pressure vessel and electrical codes, including ASME U-stamp, CE-PED, and ISO9001. Our technical division ensures that electrical installations, safety venting, and structural engineering align with country-specific regulations like ATEX, OSHA, and local environmental standards.
Our engineers provide end-to-end service from pre-sales thermodynamic calculations to on-site commissioning and performance testing. We partner with local engineering groups to deliver rapid mechanical support, preventive maintenance, structural evaluations, and readily available spare parts globally.
Spanning over 54,000 square meters of total area and 22,000 square meters of workshop space. The company employs 3 senior engineers, over 20 professional engineers, and a total manufacturing workforce of 120 specialists.
Established a comprehensive quality control and assurance structure aligned with world manufacturing criteria, receiving International Quality System Certification (Certificate No: 45021).
Acquired authorization to design and fabricate pressure vessels bearing the ASME "U" Stamp, signaling entry into high-specification international markets.
Obtained the official Special Equipment Manufacturing License of the People's Republic of China (License No: TS2232C42) for regulated pressure vessels.
Officially recognized as a High-Tech Enterprise of Jiangsu Province due to our investments in proprietary thermal and drying designs.
Adopted standard quality management policies early, securing ISO9001 certification to systemize engineering, design, and manufacturing.
Established as Yixing Yangxi Light Industry Machinery Factory, operating on 15 mu of land with 45 dedicated employees, specializing in custom machinery.
Our commitment to quality is backed by certifications that meet international industrial standards. We operate under strict quality management systems to guarantee safety and performance in demanding applications, including high-pressure systems and heavy chemical plant installations.
Every step of our process—from purchasing raw material plates to thermal calculations, structural design, welding, testing, and final quality control—is documented for full traceability. Our ASME U-stamp and CE certifications enable us to support major projects worldwide.
Evaporators absorb thermal energy to vaporize media, while condensers release heat to return the vapor to a liquid phase. In high-efficiency systems, matching the pressure profiles of these components is critical to reducing energy consumption, achieving target concentrations, and ensuring process stability.
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MVR systems provide significant energy savings for liquid concentrations. However, rising viscosity requires careful attention to liquid distribution and mechanical vapor recompression. This article analyzes how heat-transfer coefficients shift at higher solid concentrations and outlines practical mitigating steps.
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This technical brief details the use of low-oxygen inert loops in ZXG tube bundle dryers. By controlling the internal gas makeup, starch processing mills can significantly reduce the risk of dust combustion while optimizing indirect steam efficiency.
Read Research PaperMVR (Mechanical Vapor Recompression) plants reuse the latent heat of secondary vapor. By compressing this vapor with a centrifugal fan or compressor, its temperature and pressure are elevated, allowing it to act as the heating medium for the same effect. This greatly reduces live steam usage, often requiring only electrical energy for the compressor to maintain the cycle.
Depending on the chloride levels, pH, and operating temperatures, we fabricate systems using specialized corrosion-resistant alloys. Common options range from standard AISI 304 and 316L stainless steels to duplex stainless steels (such as Duplex 2205) and titanium. These materials help prevent pitting, stress corrosion cracking, and premature equipment wear.
Organic dusts can present a dust explosion hazard when handled in high concentrations at elevated temperatures. Our ZXG Tube Bundle Dryers can be configured with an inert gas, low-oxygen recycle loop. This displaces combustion-supporting oxygen with nitrogen or recirculated process steam, enhancing plant safety while maintaining efficient heat transfer.
Yes. We manufacture and stock critical mechanical components, such as custom tube bundles, distributor plates, vapor separators, sealing rings, and heavy bearings. Our network of global partners supports logistics, field service, on-site diagnostics, and maintenance to help minimize unscheduled plant downtime.
Connect with our senior engineering team today to review your mass balances, energy recovery requirements, and equipment specifications.
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