Explore our main product lines from advanced evaporation systems to high-performance dry grinding equipment.
Reliable evaporative crystallization solutions for high-viscosity, scaling-prone feedstocks.
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Designed for optimal liquids concentration and industrial cost optimization.
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Precision corn germ removal machinery engineered for the maize wet milling industry.
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High thermal efficiency solutions ideal for temperature-sensitive fluids concentration.
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Heavy duty concentration configurations designed to prevent tube clogging and fouling.
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Mechanical Vapor Recompression plants designed to maximize operational energy savings.
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Sustainable technology reclaiming thermal energy from waste industrial gas and steam.
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Engineered for safe, indirect steam drying of bulk materials with low oxygen requirements.
Explore SolutionsThe Steam Tube Bundle Dryer (ZXG series) is an advanced class of indirect heating, contact-type thermal processing system. Designed primarily for heavy-duty industrial drying demands, it stands as a cornerstone technology for processing bulk powder, granular, and fibrous materials with high initial moisture contents. Unlike direct-fired rotary dryers, the steam tube bundle system relies on heat conduction, eliminating the risk of particulate thermal degradation and dust explosions.
At the center of this machine is a rotating bundle of concentric steam tubes enclosed within a stationary shell. Saturated steam enters the tubes via an engineered rotary joint. As the bundle slowly rotates, specially designed angle-adjustable shovels (lifters) mounted on the exterior of the tubes elevate the wet material. The material cascades through the heated tube bundle, establishing contact and facilitating efficient conduction heat transfer. The evaporated moisture is continuously swept away by a mild, counter-current air draft, leaving a uniformly dry product with minimum volatile loss.
This layout operates at low rotational speeds (typically 3 to 8 RPM) and under low-oxygen conditions, making it an exceptionally safe and highly reliable selection for biomass, organic chemicals, food starches, and DDGS (Distillers Dried Grains with Solubles) processing plants globally.
Why lead engineers specify Jiangsu Zongheng's indirect steam dryers for heavy industrial applications.
By utilizing the latent heat of saturated steam through direct conduction, the ZXG dryer achieves thermal efficiencies exceeding 85%. Steam consumption is minimized to 1.2 to 1.3 kg of steam per kg of water evaporated, reducing carbon footprint and overall fuel costs.
Engineered and manufactured in strict compliance with GB150 and ASME Boiler & Pressure Vessel codes. Every unit undergoes radiography (RT), ultrasonic testing (UT), and mandatory hydrostatic pressure tests to ensure the structural integrity of the tube sheets under continuous load.
Constructed with wear-resistant boiler tubes or specialized grade stainless steel (304/316L). The heavy-duty main drive shaft features dynamic balancing and stress relieving treatments to eliminate alignment drift and bearing wear over decades of constant operation.
A comprehensive whitepaper overview on supply chain dynamics, technological trends, and operational parameters.
When engineering and procurement directors evaluate heavy chemical and agricultural processing machinery, several operational factors override basic cost metrics. Reliability, energy footprint, compliance with regional safety directives (such as ASME in the Americas and CE/PED in Europe), and ease of maintenance are critical.
The ZXG Steam Tube Bundle Dryer addresses these concerns through a design focused on mechanical reliability. Its slower rotation speed minimizes structural vibration and frictional wear compared to flash dryers. Furthermore, the closed-loop nature of indirect steam drying prevents cross-contamination and simplifies tail-gas scrubbing, making environmental compliance easier for plant operators globally.
Jiangsu Zongheng, located in Yixing City—a major Chinese hub for light industry machinery and environmental engineering—benefits from a robust local manufacturing ecosystem. This proximity ensures access to premium raw steel, advanced CNC tube-sheet drilling technologies, and specialized testing facilities.
This concentrated supply chain allows us to shorten manufacturing timelines for custom-engineered bundle dryers while maintaining high quality. Proximity to major ports like Shanghai facilitates efficient transport of oversized pressure vessels, reducing shipping logistics costs for overseas projects.
The process industries are shifting toward closed-loop systems and thermal energy recovery. Modern operations often integrate steam bundle dryers with multi-effect falling film evaporators or Mechanical Vapor Recompression (MVR) plants. Using waste vapor from the drying stage to preheat incoming feedstocks or drive evaporator stages optimizes a plant's overall thermal balance, lowering fuel requirements.
Additionally, advanced automation systems are becoming standard. Programmable Logic Controllers (PLCs) monitor parameters like inner shell pressure, inlet steam temperature, output moisture content, and bearing vibration in real time. This automated control adjusts rotation speeds and steam pressure feed rates to maintain product consistency despite fluctuations in wet feedstock characteristics.
Over three decades of developing industrial concentration, separation, and drying machinery.
Established as Yixing Yangxi Light Industrial Machinery Factory, focusing on regional starch and alcohol equipment fabrication.
Obtained ISO9001 certification, establishing our quality assurance system in line with international standards.
Recognized as a Jiangsu Provincial High-Tech Enterprise, expanding our design capabilities to high-capacity industrial systems.
Acquired the Special Equipment Manufacturing License of the People's Republic of China (License No. TS2232C42) for Class I, II, and III pressure vessels.
Earned the ASME "U" Stamp authorization, enabling us to supply code-stamped steam tube bundle dryers to the global market.
Spanning 54,000+ sqm with modern workshops, we continue to deliver advanced industrial drying and concentration systems globally.
Different materials require specialized configurations. Here is how the ZXG series adapts to various industrial applications.
Used to dry corn germ, corn fiber, and corn gluten meal. The gentle indirect heating maintains the nutritional value and protein structure of the feed products.
Dries sticky wet distillers' grains into storable DDGS. Special internal scrapers prevent material buildup on the steam tubes, maintaining consistent heat transfer rates.
Reduces hazardous waste volume by drying municipal or industrial sludge. The closed system structure helps contain volatile organic compounds (VOCs) for treatment.
Technical answers to common questions about steam tube bundle dryer design, operation, and optimization.
Explore our wider range of process technologies, including advanced single screw presses and custom dewatering solutions.
Certified evaporation systems engineered to meet European safety and performance standards.
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Designed for corn steep liquor treatment and agricultural wastewater concentration.
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Energy-efficient evaporation systems custom-built for large-scale industrial plants.
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High-torque mechanical dewatering systems for fibers, pulp, and agricultural waste.
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Fast drying systems for light materials, utilizing high-velocity heated air streams.
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Precision grain milling and degerming machinery for starch processing plants.
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Concentration systems optimized for crystallizing and high-viscosity process liquids.
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Reclaims industrial waste heat for wastewater concentration and thermal efficiency.
Explore SolutionsPartner with a manufacturer holding 30+ years of engineering experience and certified ASME / ISO9001 standards.
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