In modern chemical processing, pharmaceutical extraction, food production, and zero-liquid-discharge (ZLD) wastewater management, the vacuum evaporation system serves as a cornerstone technology. By dropping the operating pressure inside the evaporator vessel, the boiling point of the solvent (most commonly water) is significantly decreased. This core thermodynamic shift offers two massive benefits: first, it prevents thermal degradation of heat-sensitive compounds (such as proteins, vitamins, and delicate organic chemicals); second, it dramatically improves energy performance when integrated with vapor compression or multi-effect arrangements.
Historically, industries relied on single-effect atmospheric evaporators that consumed substantial amounts of raw steam. However, with the rise of international carbon reduction regulations, rising energy costs, and strict environmental water discharge requirements, global enterprises are heavily pivoting towards advanced MVR (Mechanical Vapor Recompression) and falling film vacuum systems. In countries across Europe, North America, and Southeast Asia, upgrading to vacuum concentration technology is no longer just about optimizing production output; it is a critical strategy for sustainable plant operations.
When searching for a reliable vacuum evaporation system factory, global procurement teams continuously focus on manufacturers in China. This industrial preference is driven by structural and technical advantages that make China-based production highly competitive:
Jiangsu Zongheng integrates several proprietary designs in industrial evaporation, optimizing the heat transfer coefficient (U-value) and ensuring continuous operation without frequent Clean-in-Place (CIP) interruptions:
Specially engineered for heat-sensitive liquids. The liquid feed forms a thin film flowing down the inside of heated vertical tubes. This ensures exceptionally low residence times and high heat transfer rates, ideal for starch refining, sweet juice concentrations, and low-temperature chemical processing.
Built for crystallizing processes, highly viscous liquids, and severe fouling fluids. The fluid is pumped through the heat exchanger tubes at high velocity, preventing vaporization inside the tubes. Evaporation occurs only when the liquid flashes into the separator separator chamber.
The peak of thermal economy. Instead of letting low-pressure vapor condense and lose its energy, a centrifugal compressor increases its pressure and temperature, recycling it as the heating medium for the evaporator. Cuts operating steam utility costs by up to 90%.
Jiangsu Zongheng's MQG Airflow Dryer employs high-speed hot air to suspend and fluidize the material. By utilizing impulse airflow generated from precisely varied tube diameters, it continuously tumbles the particles while conveying them.
This aerodynamic design ensures rapid, uniform, and efficient drying throughout the entire transportation process within the system, protecting the biological activity of materials like starch, gluten, and various organic chemical compounds.
Explore Airflow DryersA 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 fouling and maintain high thermal efficiency and operational stability.
Explore Falling Film Systems
Energy-efficient solutions including Falling Film, Forced Circulation, Waste Heat, and MVR systems tailored to maximize water recovery and chemical separation.
Engineered for high-torque mechanical dewatering of fibrous and municipal sludges, reducing moisture loads ahead of thermal drying phases.
Utilizes indirect steam heating for steady, low-temperature, and low-oxygen drying of bulk granular powders, maximizing thermal transfer efficiency.
Suspends solid particles in high-velocity hot air currents to instantly vaporize surface moisture, processing tons of raw materials per hour.
Delivers high-precision mechanical friction and milling for processing starch-rich crops, separating corn germs from endosperm without damage.
High-efficiency multi-stage hydrocyclones for washing, refining, and separating starch, recovering pristine starch granules from industrial slurries.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. (formerly known as Yixing Yangxi Light Industry Machinery Factory) was founded in 1992. Nestled on the shores of Taihu Lake in Zhoutie Town, Yixing City, Jiangsu Province, our company has grown from a specialized light industry machinery shop into a massive modern engineering hub.
Our current operations span a total facility area exceeding 54,000 square meters, featuring 22,000 square meters of high-capacity production workshops. Equipped with advanced metal fabrication tools, automatic welding systems, and an array of pressure vessel testing rigs, we design and manufacture complex concentration, drying, bio-starch separation, alcohol DDGS systems, and Category III medium and low-pressure vessels.
As a trusted, long-standing member of the China Starch and Alcohol Association, our equipment is exported internationally to serve processing lines in food fermentation, petrochemicals, pharmaceuticals, waste-to-energy recovery, and chemical purification.
Lowering the operating pressure within the evaporator vessel decreases the boiling point of the solvent. This reduces the temperature difference required between the heating steam and the boiling liquid. Consequently, it allows design engineers to construct Multi-Effect Evaporators (MEE) or integrate Mechanical Vapor Recompression (MVR), reusing the vapor's latent heat multiple times and minimizing fresh boiler steam feed.
Depending on chloride levels and acid concentrations, we manufacture systems using high-grade Duplex Stainless Steel (2205/2507), Hastelloy (C276), or Titanium. Our engineers utilize ASME-authorized design calculations to select optimal tube wall thicknesses and grade properties to guarantee long-term corrosion resistance.
Fouling is prevented through high-precision liquid distributors placed at the top of the tube bundle. This ensures an even, continuous wetting rate across all inner tube surfaces. Additionally, we integrate fully automated clean-in-place (CIP) pipelines for quick scale removal without disassembly.
Yes, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. has held the official ASME "U" Stamp authorization since 2012. Our engineering office drafts, tests, and certifies all pressure equipment in compliance with global standards, supporting seamless international integration and factory clearances.
We warmly welcome friends from various industries, both domestic and international, to visit us for long-term engineering cooperation and mutual technological development.
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