China Multi Stage Evaporator Manufacturer & Suppliers

ASME Certified Engineering, High-Efficiency Thermal Separation, and Industrial Concentration Solutions by Jiangsu Zongheng

Featured Equipment Range

High Performance Systems

China Suppliers - Jiangsu Zongheng ZXG Tube Bundle Dryer

Jiangsu Zongheng ZXG Tube Bundle Dryer | Factory-Direct Efficient Indirect Steam Drying Solutions

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China Jiangsu Zongheng Waste Heat Evaporator Supplier

China Jiangsu Zongheng Waste Heat Evaporator Supplier, Service

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China Suppliers Waste Heat Evaporator

Waste Heat Evaporator from Factory - Efficient Multi-Source Integration for Liquid Processing

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CE Certification Jiangsu Zongheng Tube Bundle Dryer

CE Certification Jiangsu Zongheng ZXG Tube Bundle Dryer Manufacturers

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China Suppliers Factory Waste Heat Evaporator

Waste Heat Evaporator for Efficient Wastewater Treatment and Energy Savings

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High-Quality Efficient Falling Film Evaporation Plant

Efficient Falling Film Evaporation Plant from China Suppliers for Heat-Sensitive Liquids

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High-Quality Airflow Dryer from China Suppliers

High-Quality Airflow Dryer from China Suppliers - Jiangsu Zongheng Factory for Material Drying

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China Zongheng Industrial Evaporation Technology

China Zongheng Industrial Evaporation Technology - Energy-Efficient Solutions from Factory

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Industry Technical Insights

The Global Landscape of Multi-Stage Evaporation Technology

Industrial evaporation is a cornerstone thermodynamic process used for liquid separation, waste minimization, and chemical purification across global process industries. In an era marked by stringent decarbonization targets and rising utility costs, single-effect evaporation systems are rapidly being phased out. Industrial operations are shifting towards Multi-Stage Evaporator (Multi-Effect Evaporator - MEE) and Mechanical Vapor Recompression (MVR) designs to achieve optimum thermal efficiency.

By cascading stages where the vapor produced in one effect serves as the heating medium for the subsequent effect (operating at lower boiling temperatures), multi-stage systems reduce steam consumption exponentially. A single-effect system requires approximately 1.1 kg of steam to evaporate 1 kg of water, whereas a properly designed 5-stage system can drop steam consumption to under 0.22 kg per kg of water evaporated.

Globally, engineering procurement contractors (EPCs) and operators demand systems that not only conserve thermal energy but also offer long-term operational stability. This requires complex modeling of boiling point elevation (BPE), precise liquid distribution inside the tubes, and robust corrosion mitigation frameworks.

Thermodynamic Efficiency

Reduces steam demands through advanced heat cascading, enabling significant operating cost (OPEX) reductions.

ZLD Compliance

Allows factories to reach Zero Liquid Discharge (ZLD) thresholds, recovering clean water and isolating solids.

China Manufacturing Excellence

Supply Chain & Engineering Advantages of Jiangsu Zongheng

Located in Yixing, Jiangsu—the premier industrial machinery hub of China—Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd benefits from an established raw material supply chain and specialized metallurgy talent pool. Since our founding in 1992, we have optimized our 54,000-square-meter facility to deliver ASME U-stamp and CE-certified industrial equipment.

  • Advanced Metallurgy: Full fabrication capabilities utilizing SUS304, SUS316L, duplex stainless steel (SAF 2205/2507), and high-grade Titanium (TA1, TA2) to handle aggressive process chemistries.
  • Uncompromised QA/QC: Equipped with radiographic testing, helium leak detection, and computerized thermal modeling to guarantee structural and operational stability under vacuum conditions.
  • Cost-Effective Integration: By consolidating design, precision manufacturing, testing, and shipping logistics locally, we pass significant capital expenditure (CAPEX) savings directly to our global customers.
Jiangsu Zongheng Production Plant View

30+

Years of Thermal Engineering Experience

20+

Professional R&D and Process Engineers

54,000+

Total Production Footprint (sq. meters)

22,000+

Modernized Heavy Fabrication Plant (sq.m)

Core Product Portfolios

Engineering Solutions for Industrial Separation

Evaporators
Single Screw Press
Tube Bundle Dryer
Airflow Dryer
Degerming Mill
Starch Cyclone

Falling Film Evaporators

Engineered for heat-sensitive liquids, our systems allow feed to form a highly uniform thin film cascading down vertical heated tubes. This layout ensures minimal residence times, prevents product degradation, and offers high heat transfer coefficients under vacuum.

Forced Circulation Evaporators

Built to handle highly saline, high-viscosity, and scale-prone liquids. Powerful recirculation pumps push the media through heat exchangers at high velocity, preventing premature boiling inside the tubes and suppressing scale formation.

MVR Evaporation Plants

Utilizing Mechanical Vapor Recompression technology, these systems recompress secondary steam to elevate its thermal state, routing it back as the primary heating medium. This cuts fresh steam consumption close to zero, providing unmatched ROI.

Industrial Applications

Versatile Solutions Across Key Sectors

Agricultural Starch Concentration

Starch & Sweetener Processing

Optimized evaporation systems for corn, cassava, and wheat starch lines, delivering high-concentration glucose and maltose syrups.

Wastewater Screw Press Dewatering

Wastewater & ZLD

Concentrating high-salinity industrial effluent to facilitate salt crystallization and zero liquid discharge mandates.

DDGS Alcohol Byproducts Drying

Alcohol & DDGS

Integrating waste heat evaporators with tube bundle dryers to convert thin stillage into high-grade distillers dried grains with solubles.

Chemical Process Concentration

Chemical & Pharmaceutical

Precision vacuum concentration processes that preserve chemical purity while recovering organic solvents efficiently.

Our Journey

Jiangsu Zongheng Milestone Timeline

26

2026

Global Operations & Heavy Fabrication Hub

Operating a 54,000+ sqm footprint with over 120 dedicated staff including 3 senior engineers and 20+ process engineers. We continue to design next-generation MVR and high-effect evaporation columns for international process plants.

Zongheng Facility 2026
15

2015

ISO Certification Expansion

Secured international quality system certification (Certificate No.: 45021), validating our quality assurance programs across all lines of fabrication.

Quality Certificate Milestones
12

2012

ASME "U" Stamp Certification

Earned the American Society of Mechanical Engineers (ASME) "U" Stamp authorization, opening doors to custom pressurized vessel fabrication for the global oil, gas, and chemical sectors.

ASME Authorization
09

2009

Special Equipment License

Awarded the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42), authorizing the creation of Category III medium and low-pressure vessels.

Special Manufacturing License
07

2007

Jiangsu High-Tech Enterprise

Formally recognized as a Jiangsu Provincial High-Tech Enterprise, acknowledging our innovative work in thermal and mechanical separation machinery.

High-Tech Enterprise Honor
02

2002

ISO9001 Alignment

Obtained our ISO9001 certification, standardizing internal project management, material sourcing, and mechanical design workflows.

ISO9001 Certification
92

1992

Company Inception

Founded as Yixing Yangxi Light Industrial Machinery Factory on the shores of Taihu Lake. Began designing regional separation systems with 45 dedicated specialists.

1992 Historical Factory Site
Quality Assured

Enterprise Qualifications & Certifications

Knowledge Center

Multi-Stage Evaporator FAQ

Q1: How does a multi-stage evaporator optimize energy consumption?
A multi-stage (or multi-effect) evaporator reduces energy use by recycling latent heat across successive vessels. Steam enters the first stage (effect), boiling the feed and producing vapor. Instead of releasing this vapor, it is piped into the shell of the second effect, operating at lower pressure and temperature. The vapor condenses, transferring its heat to boil the liquid in the second effect. This cascading mechanism repeats across subsequent stages. For example, a five-effect system consumes only about 0.2 kg of steam per kg of water evaporated, compared to 1.1 kg of steam in a single-effect layout.
Q2: When should I choose a Falling Film Evaporator over Forced Circulation?
Falling Film evaporators are ideal for heat-sensitive liquids, clean fluids with low fouling risks, and processes requiring low temperature drops. They offer fast throughput and high heat transfer efficiency. Forced Circulation evaporators are preferred when treating highly concentrated, saline, crystallizing, or highly viscous solutions. They utilize high-capacity circulation pumps to generate rapid flow velocities through the tubes, suppressing boiling inside the tube wall to prevent scale build-up.
Q3: How does Mechanical Vapor Recompression (MVR) differ from Multiple Effect Evaporation (MEE)?
MVR systems use a mechanical compressor or fan to compress the secondary vapor generated during evaporation. Compression increases the temperature and pressure of the vapor, allowing it to act as the primary heating steam for the same stage. This design requires electricity to run the compressor but cuts live steam usage during steady-state operations. MEE systems rely on raw steam cascading through multiple lower-pressure stages. MVR offers better operational savings (OPEX) in regions with cheap electricity, whereas MEE is simpler to build and ideal when steam is readily available.
Q4: What material of construction is recommended for corrosive chemical waste stream concentration?
Material selection depends on chemical composition, temperature, and chloride content. For neutral organic streams, SUS304 or SUS316L stainless steels are standard. For mild acidic or saline environments, duplex stainless steels like SAF 2205 or SAF 2507 provide good resistance to stress corrosion cracking. For highly corrosive streams—such as wastewater containing chlorides, hydrochloric acid, or high-salinity brines—we use Titanium (TA1/TA2) or Hastelloy.
Q5: How does Jiangsu Zongheng prevent tube fouling in wastewater applications?
Fouling is controlled through process modeling and mechanical design. We adjust fluid dynamics to keep tube velocities above fouling thresholds, use electro-polished tube surfaces, and integrate Clean-in-Place (CIP) systems to flush pipes without disassembly. In crystallizing or high-fouling zones, we utilize forced circulation loops to suppress surface boiling, keeping crystals in suspension until they enter the flash chamber.
Q6: What standards and quality certifications does Jiangsu Zongheng comply with for global shipments?
Our systems comply with major international engineering guidelines. We hold the ASME "U" Stamp authorization for pressure vessels, follow the CE Pressure Equipment Directive (PED) for European projects, and maintain ISO9001 and ISO14001 certifications. Every vessel undergoes non-destructive testing (NDT), hydraulic pressure tests, and third-party inspection before export.
Q7: Can a tube bundle dryer integrate with a multi-stage evaporation process in DDGS production?
Yes. In ethanol DDGS and corn starch operations, our ZXG tube bundle dryer operates alongside our waste heat evaporators. Thin stillage is concentrated in the multi-stage evaporator utilizing flash vapors from the dryer. The resulting syrup is blended with wet mash and fed into the tube bundle dryer. This thermal integration recovers waste heat, reducing utility demands for the plant.
Q8: What is the typical return on investment (ROI) timeframe when upgrading to a modern multi-stage system?
Most plant upgrades pay for themselves in 12 to 24 months through lower fuel and water consumption. For example, replacing a three-effect system with a modern five-effect evaporator with thermal vapor recompression (TVR) can reduce steam requirements by 30-40%. Combined with automation, this reduces operating costs and provides long-term energy savings.
Industrial Evaporators & Separation Solutions

Complete Process Portfolio

China Energy-Efficient Evaporation Solutions

China Energy-Efficient Evaporation Solutions for Liquid Concentration Service, Factories

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China Suppliers Factory for Jiangsu Zongheng ZXG Tube Bundle Dryer

China Suppliers Factory for Jiangsu Zongheng ZXG Tube Bundle Dryer - Efficient Indirect Steam Drying

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China MVR Evaporation Plant Suppliers

China MVR Evaporation Plant Suppliers | High-Efficiency Factory Solutions for Energy Savings

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China Suppliers for High-Performance Evaporation Technology

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High-Quality Energy-Efficient Evaporation Solutions by Jiangsu Zongheng

High-Quality Energy-Efficient Evaporation Solutions by Jiangsu Zongheng: Leading China Suppliers

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China Zongheng Waste Heat Evaporator

China Zongheng Waste Heat Evaporator: Leading Suppliers & Factory for Efficient Solutions

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China Suppliers - Jiangsu Zongheng Single Screw Press Factory

China Suppliers - Jiangsu Zongheng Single Screw Press Factory for Dewatering of Corn Fibre

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China Falling Film Evaporation Plant Suppliers

China Falling Film Evaporation Plant Suppliers | High-Quality Factory Solutions for Liquids

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Ready to Optimize Your Concentration Process?

Contact our thermal engineering division today for custom designs, simulations, and budget quotes tailored to your plant footprint.

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Company Development & News

Latest Industrial Bulletins

Evaporation technology updates
Calendar Icon Jun 18, 2026

Today, Jiangsu Zongheng Concentration and Drying Equipment Co., Ltd., a manufacturer of evaporator...

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 target solutions efficiently...