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Read More →Falling Film Evaporators represent the pinnacle of thermal separation engineering, specifically optimized for handling heat-sensitive liquids. In a typical falling film configuration, the feed fluid enters at the head of the evaporator and is distributed evenly across the inner surfaces of vertical tubes. This distribution is vital; a uniform, continuous liquid film must flow downward under gravity, absorbing latent heat from the external steam jacketed walls.
As thermal energy is transferred, the liquid partially vaporizes. The co-current flow of the vapor alongside the liquid film creates a high-velocity vapor core. This shear stress accelerates the downflow rate, promoting extremely high heat transfer coefficients and minimizing liquid residence times to seconds. This rapid, single-pass processing pathway safeguards volatile components and prevents the degradation of delicate materials like proteins, organic compounds, and complex starch sugars.
Located in Zhoutie Town, Yixing, Jiangsu Zongheng leverages a comprehensive industrial supply chain for high-alloy stainless steels, premium machining, and automated control systems, driving structural cost-effectiveness.
Armed with ASME "U" Stamp authorization, CE certifications, and ISO9001 quality management alignment, our pressure vessels and evaporators meet rigorous specifications for hazardous, food-grade, or chemical services.
Our in-house design capabilities accommodate specialized processes including Mechanical Vapor Recompression (MVR), Thermal Vapor Recompression (TVR), multi-effect steam saving, and complete Clean-In-Place (CIP) systems integration.
Modern industrial complexes face strict emission limits and rising energy costs. To counter this, our factories integrate Mechanical Vapor Recompression (MVR) technology with our falling film designs. By compressing the secondary vapor produced during evaporation using a high-efficiency centrifugal fan or turbo blower, the vapor's temperature and pressure are raised. This energized vapor is then returned to the heating side of the system, eliminating the need for continuous fresh boiler steam. Energy savings of up to 90% are common, significantly reducing operating costs.
The core vulnerability of falling film evaporation is localized boiling dry (drying out), which causes rapid fouling, scaling, and thermal scorching of sensitive products. Our engineering team designs precision liquid distributors at the top tube sheet to ensure each tube receives a consistent liquid film. The system maintains a strict wetting rate, ensuring the tube walls are constantly bathed in a thin, flowing film. This design enables longer continuous run times, decreases cleaning frequency, and increases daily processing throughput.
Our concentration systems are used across diverse industrial sectors. In the corn starch and food fermentation sector, we concentrate glucose, maltose, and starch washing effluents. In the bio-ethanol industry, our multiple-effect waste heat falling film systems evaporate light steep water to produce dry DDGS, utilising steam from dryers to save energy. Additionally, in chemical engineering and environmental protection, these units concentrate brine solutions and industrial waste streams to facilitate Zero Liquid Discharge (ZLD) recovery processes.
When sourcing process equipment internationally, engineering compliance is paramount. Procurement teams must verify mechanical calculations, wind/seismic calculations for tall columns, material traceability certificates (EN 10204 3.1), and surface roughness metrics (typically Ra < 0.4 μm for food contact areas). Our manufacturing facility handles all required non-destructive testing (NDT), including radiographic, dye-penetrant, and ultrasonic testing, ensuring smooth customs clearance and quick field installation.
Zonghong provides energy-efficient, high-performance evaporation solutions configured for high solids concentration.
Zongheng is a premier Chinese manufacturer specializing in forced circulation systems for high viscosity and crystal separation.
Integrates multiple waste heat sources—including drying vapors and steam condensates—to maximize efficiency.
Jiangsu Zongheng operates over 54,000 square meters of facilities, utilizing 3 senior engineers and 20+ specialized process engineering staff to serve clients worldwide.
Obtained 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 international high-pressure vessel fabrication.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for low and medium pressure vessels.
Established as Yixing Yangxi Light Industry Machinery Factory, beginning our journey in Yixing City with a dedicated focus on evaporation and concentration.
Every industrial unit manufactured by Jiangsu Zongheng undergoes rigorous quality reviews. We maintain fully calibrated radiographic evaluation bays, weld inspection protocols, and pressure-testing bays to secure standard compliance before shipping. This commitment ensures our systems operate reliably in demanding environments globally.
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 source fluids. Designing these components with proper material tolerances ensures optimal heat transfer efficiency across food, chemical, and waste management industries.
We warmly welcome friends from various industries, both domestic and international, to visit us for cooperation and mutual development!
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