Founded in 1992 (originally Yixing Yangxi Light Industry Machinery Factory), Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. has evolved into a global leader in concentration, industrial drying, and environmental compliance vessels. Located in Zhoutie Town, Yixing City—a prestigious industrial hub near beautiful Taihu Lake—our massive manufacturing facilities cover over 54,000 square meters, featuring specialized heavy-industrial production workshops exceeding 22,000 square meters.
As a key standing member of the China Starch and Alcohol Association, we deliver state-of-the-art evaporation plants, custom pressure vessels, and comprehensive industrial dewatering solutions. Our systems are strategically optimized for food processing, bio-fermentation, alcohol/DDGS production, chemical engineering, and hazardous wastewater crystallization (ZLD) globally.
Specially engineered for processing low-viscosity, highly heat-sensitive fluids. The liquid feedstock is pumped to the top distribution system of the vertical shell-and-tube heat exchanger, where it forms a thin, continuous liquid film descending the inner tube walls under gravity. As it flows down, vaporization occurs, and the co-currently flowing vapor accelerates liquid descent, generating high heat transfer coefficients and reducing residence time.
Designed for scaling, crystallization, and highly viscous applications. Liquid velocity inside the tubes is kept extremely high (typically 2-3 m/s) using heavy-duty axial flow pumps. This high turbulence suppresses boiling on the heat-exchanger surface, preventing fouling. Boiling only occurs when the liquid enters the vapor separator flash chamber, separating solvent from crystals.
Mechanical Vapor Recompression (MVR) utilizes a centrifugal compressor or roots blower to compress clean process steam, increasing its pressure, temperature, and enthalpy. This compressed vapor is recycled as the heating medium, eliminating external live steam requirements during continuous operation. Reduces operating costs by up to 60-80% compared to traditional multi-effect setups.
Utilizes indirect steam heating through a rotating bundle of concentrated heating tubes. The materials tumble over the steam-heated pipes inside a low-oxygen stationary housing. Excellent for safe processing of hazardous, highly flammable organic compounds and high-viscosity sludge, ensuring minimal dust emissions and optimized thermal efficiency.
Jiangsu Zongheng leverages the absolute geographic advantages of Yixing's industrial cluster to provide outstanding economic and supply chain resilience. Through full-process manufacturing, from raw plate rolling to precision machining and final non-destructive testing (NDT), we maintain complete control over production schedules and costs.
Complete process line configuration including maize washing cyclones, degerming mills, and fiber dewatering screw presses. High-volume waste heat recovery processes utilize corn steep liquor concentration to reduce energy demands.
Integrated solutions combining multi-effect or MVR evaporators with heavy-duty tube bundle dryers to handle thick distillery slops (stillage) and produce high-nutrient DDGS feedstuffs efficiently.
For chemical and pharmaceutical plants processing high-saline waste streams. Our continuous forced circulation crystallization plants achieve maximum solvent reclamation and reduce waste to landfill.
Global corporate buyers require absolute alignment with high-level pressure equipment regulations. Jiangsu Zongheng ensures full regulatory compliance across international regions:
We provide fully customized, turn-key solutions tailored to our customers' specific feed materials and operating conditions:
Our operations now span over 54,000 m² with a modern production area exceeding 22,000 m². The engineering department boasts 3 senior engineers and over 20 specialized structural and thermal engineers.
Obtained international quality system certification (Certificate No. 45021), establishing a complete quality assurance system aligned with international standards.
Acquired official ASME "U" Stamp authorization, marking a major milestone in exporting pressure equipment to overseas markets.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42).
Awarded official designation as a Jiangsu Provincial High-Tech Enterprise, recognizing our engineering and manufacturing innovation.
Pioneered quality management in our local region by obtaining ISO9001 Quality System Certification.
Established as Yixing Yangxi Light Industrial Machinery Factory, occupying a 15-mu site with a team of 45 dedicated pioneers.
At Jiangsu Zongheng, we continuously push the boundaries of thermodynamic efficiency and industrial automation. Our engineering roadmap focused on developing the next generation of eco-friendly processing systems.
Implementing double-rotor high-speed steam compressors capable of reducing electric power consumption down to < 12 kWh per ton of water evaporated, maximizing thermal energy recovery.
Integrating acoustic emissions testing and vibration analysis sensors within the evaporators to predict fouling buildup and optimize automated CIP (Clean-in-Place) system cycles.
Developing closed-loop solvent recovery units that capture volatiles, and combining drying and concentration steps to achieve zero carbon emissions during industrial wastewater processing.
Deploying high-capacity pressure systems globally requires localized technical expertise. Jiangsu Zongheng ensures trouble-free installation and operation through our comprehensive support framework:
Dedicated multi-lingual teams coordinate on-site installation, vessel alignment, structural assembly, and hot commissioning.
We maintain a comprehensive inventory of critical components, including compressor seals, valves, and distribution plates.
Falling film evaporators rely on gravity to form a thin film on the inner tube walls, generating high heat transfer coefficients with a short residence time, making them ideal for heat-sensitive, non-crystallizing fluids. Forced circulation evaporators use high-flow recirculating pumps to suppress boiling inside the tubes, preventing fouling. Boiling occurs when the liquid enters the separator, making this design ideal for scaling liquids and crystallization processes.
Jiangsu Zongheng holds the ASME "U" Stamp authorization for Division 1 pressure vessels, along with the Class III Special Equipment Design & Manufacturing License of the PRC. Our production operations are certified under ISO9001 quality management, ensuring compliance with international codes such as PED (Europe) and national pressure vessel standards.
MVR (Mechanical Vapor Recompression) recycles the secondary vapor generated during the evaporation process. By compressing it, we increase its temperature and enthalpy, allowing it to be reused as the heating source. This minimizes live steam consumption, reducing energy costs by up to 60-80% compared to traditional multi-effect setups.
We work with a wide range of high-performance alloys, including titanium (Grade 2), duplex stainless steels (such as 2205/2507), Hastelloy, and standard stainless steels (316L/304). The alloy selection is tailored to the chemical composition, pH, and chloride content of the feedstock.
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