Nordstone | Evaporator

Evaporator – Advanced Liquid Concentration Technology

An Evaporator is a critical heat transfer pressure vessel used to concentrate liquids by vaporizing solvent, typically water or other volatile components, from a solution, slurry, or process stream. Evaporators are essential in industries where product concentration, solvent recovery, and energy efficiency are required.

At NORDSTONE, we design and manufacture evaporators with optimal heat transfer efficiency, robust mechanical design, and compliance with international codes including ASME Section VIII Div.1, TEMA, API, and customer specifications.

What is an Evaporator?

Evaporators remove a liquid's solvent by applying thermal energy, resulting in a vapor phase that is condensed and optionally recovered. The remaining liquid becomes a concentrated product.

Depending on the application, evaporators can handle highly corrosive fluids, viscous slurries, and foaming liquids.

Quality Assurance & Testing

All evaporators undergo rigorous quality checks:

Hydrostatic

Testing

Pneumatic

Testing

Radiography

(RT)

Ultrasonic

Testing (UT)

Dye Penetrant

Inspection

Magnetic Particle

Inspection

Tube Expansion

Verification

Material

Traceability

Third-Party Inspection Agencies:

TUV

Lloyds

DNV

SGS

Types of Evaporators We Manufacture

1. Falling Film Evaporator

✓

High-efficiency heat transfer for low to moderate viscosity fluids

✓

Liquid flows down inside tubes or plates as a thin film

✓

Quick vaporization, minimizing thermal degradation

2. Rising Film (Long Tube Vertical) Evaporator

✓

Liquid rises due to boiling inside long vertical tubes

✓

Suitable for low fouling and heat-sensitive fluids

✓

Natural circulation reduces energy consumption

3. Forced Circulation Evaporator

✓

Pump-driven liquid circulation

✓

Ideal for viscous or scaling-prone liquids

✓

Ensures uniform heat distribution and prevents tube fouling

4. Plate Evaporator

✓

Compact, modular design

✓

High surface area per unit volume

✓

Easy cleaning and maintenance

5. Multiple-Effect Evaporator (MEE)

✓

Reuses vapor energy across multiple stages

✓

Reduces steam consumption and operational costs

✓

Widely used in chemical, sugar, and desalination industries

6. Falling Film Vertical Evaporator

✓

Compact vertical design

✓

High heat flux, low residence time for heat-sensitive fluids

✓

Efficient for concentrated solutions

Key Features of Our Evaporators

⚡

Superior Heat Transfer Performance

Optimized tube bundle, baffle design, and flow pattern
High LMTD (Log Mean Temperature Difference)
Multi-effect and multi-pass options for energy efficiency

🏗️

Robust Mechanical Design

ASME Section VIII Div.1 and TEMA-compliant
Capable of handling high pressure and vacuum conditions
FEA-based stress and vibration analysis

🔩

Wide Material Selection

Carbon Steel (CS):

SA 516 Gr. 60/70, SA 106 Gr.B

Stainless Steel:

SS304/304L, SS316/316L

Special Alloys:

Duplex / Super Duplex Stainless Steel

Corrosion Resistant:

Titanium, Inconel, Hastelloy, Alloy 20

Special Applications:

Clad or lined materials for aggressive or fouling fluids

🧹

Easy Maintenance & Cleaning

Removable tube bundle
Inspection ports, manways, and drains
CIP (Clean-In-Place) compatibility

Design & Engineering Considerations

Thermal Design

•

Heat duty calculation using HTRI or equivalent software

•

Evaporation rate optimization

•

Temperature and pressure control

•

Vapor-liquid separation efficiency

•

Consideration for foaming, fouling, and scaling

Mechanical Design

100 bar

Pressure Rating (Customizable)

-50°C to +400°C

Temperature Range

•

Tube-to-tubesheet joint qualification

•

Supports, saddles, and expansion allowances

•

Compliance with PED and NACE MR0175/ISO 15156

Operational Parameters

•

Single-effect or multiple-effect operation

•

Continuous or batch operation

•

Low residence time for heat-sensitive products

•

High-efficiency vapor separation

Applications

Evaporators are widely applied across industries:

⚗️ Chemical & Petrochemical Industry

Concentration of acids Caustics concentration Chemical solutions Solvent recovery

🍎 Food & Beverage Industry

Fruit juices concentration Milk concentration Sugar syrups Thermal processing

💊 Pharmaceutical & Biotech

Solvent evaporation Drug formulation Liquid active ingredients concentration

💧 Water & Wastewater Treatment

Brine concentration Zero liquid discharge (ZLD)

🍯 Sugar & Pulp Industry

Evaporation of cane juice Sugar syrup concentration

Optional Features & Packages

🔁

Multi-Effect Systems

Energy-efficient multiple-effect evaporator configurations

🔥

Heating Jackets

Steam or thermal oil heating jackets

🎛️

Automatic Control

Level and temperature control systems

💨

Vacuum Operation

Vacuum operation with condensate recovery

🧼

CIP Compatibility

Clean-In-Place system compatibility

🛡️

Protective Coatings

Anti-fouling or anti-corrosion coatings

📦

Skid-Mounted Packages

Complete evaporator systems on ready-to-install skids

Why Choose NORDSTONE?

20+

Years of Experience

In pressure vessels and heat transfer systems

⚙️

Advanced Design Capabilities

Thermal & mechanical design optimization

🔧

Custom-Engineered Solutions

Evaporators for any industrial application

🏭

ASME-Certified Fabrication

With full QA/QC support and documentation

🌍

Proven Global Installations

In chemical, pharma, sugar, and water treatment industries

⚡

Energy-Efficient Solutions

Reliable and durable evaporator systems

Evaporator – Heat Transfer Pressure Vessels