In modern process industries, separation is a core chemical step. Global industrial systems handle high viscous products, fouling liquids, and crystallizing liquids, where classic falling film setups fail due to dry-out spots and mineral scaling. This is where Forced Circulation Evaporators (FCE) and specialized Forced Film Evaporators play a vital role.
By using heavy-duty axial flow pumps, these machines keep liquids moving fast through heat exchanger tubes. High velocity suppresses boiling inside the tube bundle, preventing scaling. Boiling only happens inside the separator vessel due to pressure drops. This method offers high performance, long running times, and lower maintenance costs.
"By controlling fluid velocity and separating heat transfer from boiling, forced circulation systems prevent crystallization inside the heat exchange tubes, keeping operations running smoothly for longer."
At Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd., we customize these systems for applications like corn wet milling, DDGS, chemical wastewater treatment, and zero liquid discharge (ZLD). By integrating MVR (Mechanical Vapor Recompression), we cut energy use by up to 90% compared to traditional multi-effect steam systems.
Established in 1992, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. (formerly Yixing Yangxi Light Industry Machinery Factory) has grown into a leading developer of concentration, drying, starch refining, alcohol DDGS, and Category III medium & low-pressure vessel systems. Located in Zhoutie Town, Yixing City, on the shores of Taihu Lake, the company is a member of the China Starch and Alcohol Association.
We offer engineering services, from thermal designs using Duplex Steel and Titanium to manufacturing, onsite installation, and startup support. By combining thermal design knowledge with advanced CNC manufacturing and ISO9001 and ASME U-stamp quality standards, we deliver systems that run reliably for global processing plants.
Established Yixing Yangxi Light Industrial Machinery Factory with 15 mu of land and 45 employees, focusing on light industrial machinery and early evaporation vessels.
Obtained the ISO9001 Quality Management System certification, building standardized control systems for design, purchasing, and production.
Designated as a Jiangsu Provincial High-Tech Enterprise, which helped expand R&D investments in MVR technology and thermal separation.
Obtained the Special Equipment Manufacturing License of the PRC (TS2232C42) for fabricating medium-and-low-pressure vessels.
Obtained the ASME "U" Stamp authorization, allowing the company to supply code-stamped equipment globally.
Acquired international quality system certification (Certificate No.: 45021), expanding exports to markets in Southeast Asia, Europe, and the Americas.
Grown to cover 54,000+ sqm, employing 120+ team members, including senior engineers, and running dedicated production lines for large-scale evaporators.
Ideal for crystallizing, scaling, or high-viscosity solutions. The liquid is pumped through heat exchanger tubes at velocities of 2-3 m/s. High hydrostatic head keeps the liquid from boiling inside the tubes, preventing scale build-up.
Designed for heat-sensitive liquids. The liquid flows downward inside vertical tubes as a thin film, evaporating quickly at low pressure. It provides a short residence time, preserving product quality.
Uses a mechanical compressor to recompress secondary vapor, raising its temperature and pressure. The vapor is then reused as heating steam, which cuts primary steam use and operational costs.
Global procurement teams evaluation of industrial evaporators focuses on total cost of ownership (TCO) rather than just initial costs. When buying a forced film or forced circulation system, engineering requirements include:
Our starch washing cyclones, degerming mills, and single-screw dewatering presses work together with our evaporation systems. In corn wet milling, steepwater contains valuable protein and organic matter that must be concentrated. Our falling film and forced circulation evaporators concentrate steepwater to 48-50% dry solids. The concentrated syrup is then blended with fiber and dried using our energy-efficient ZXG Tube Bundle Dryers.
In bio-ethanol production, thin stillage concentration requires strong thermal performance. We offer multi-effect evaporators and integrated waste heat evaporators that use waste heat from dryers to preheat and concentrate feed liquid, reducing energy costs for alcohol plants.
For chemical and pharmaceutical waste, disposing of high-salt wastewater is a challenge. Forced circulation crystallizers concentrate brine past the saturation point, producing crystalline salts (e.g., NaCl, Na2SO4) that can be dewatered by centifuges. This allows plants to recover clean water and meet environmental regulations.
The evaporation industry is focusing on smart systems and lower carbon footprints. As energy costs rise and environmental rules tighten, Zongheng is developing next-generation evaporation technologies:
We are adding temperature, pressure, and flow sensors linked to AI control software to monitor operations. The software monitors heat transfer rates in real-time, predicting scaling before it blocks the system and scheduling Clean-in-Place (CIP) cycles to reduce downtime.
For plants with fluctuating power grids or excess steam, we design hybrid MVR/TVR systems. These systems use high-pressure steam ejectors alongside mechanical compressors to stabilize energy consumption and lower utility costs.
We are testing lightweight, chemical-resistant fluoropolymer linings and titanium alloys for use in high-corrosion applications, providing a cost-effective alternative to expensive solid nickel alloys.
Jiangsu Zongheng systems are designed and built to meet strict global engineering codes. Our quality assurance processes include:
Whether you require an estimate for an ASME code-certified forced circulation evaporator, want to integrate energy-efficient MVR systems, or need help designing process machinery, our engineering team is here to assist.
Zongheng