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Industrial Circulation Heaters For Continuous Inline Heating Of Liquids, Gases And Thermal Fluids
Elekheat manufactures custom electric circulation heaters designed for continuous inline heating of liquids, gases, thermal oils and process media in industrial systems.
Each heater is engineered according to heating capacity, flow conditions, operating temperature, pressure rating and material compatibility requirements.
3kW-1000kW Heating Capacity
-40°C~700°C Operating Temperature
10MPa+ Design Pressure
ATEX / IECEx Explosion Proof Options
Electric Circulation Heaters Designed For Process Heating Systems
An industrial circulation heater, also known as an electric inline heater, is designed to heat flowing liquids, gases and process media while they pass through a dedicated heating chamber.
Unlike immersion heaters installed directly inside storage tanks, circulation heaters are installed externally in pipeline systems or closed-loop circulation systems, providing continuous heating, accurate temperature control and easier maintenance.
A complete circulation heater consists of a pressure vessel, tubular heating elements, inlet and outlet connections, temperature sensors and control components.
The heating chamber design is customized according to medium properties, flow rate, pressure conditions and required outlet temperature.
Typical Applications
- Pipeline fluid temperature maintenance
- Thermal oil circulation heating
- Gas and air preheating
- Chemical process heating
- Skid mounted process heating systems
WHY ELEKHEAT
Engineered For Reliable Industrial Heating Performance
01
Wide Heating Range
Heating capacity from 3kW to 1000kW. Each unit can be customized according to temperature rise, flow rate, pressure and process requirements.
02
Process Material Selection
SS304, SS316L, Incoloy 800/825, carbon steel and special alloys are selected according to corrosion resistance and operating temperature requirements.
03
Optimized Temperature Control
Available with PID control, SSR power regulation, PLC control systems, temperature sensors and multi-level safety protection.
04
Hazardous Area Solutions
Explosion-proof circulation heaters are available for hazardous environments with ATEX, IECEx and Ex protection options.
WORKING PRINCIPLE
How Does A Circulation Heater Work?
The process medium enters the pressure vessel through the inlet connection and flows through the internal heating zone. Electrical energy is converted into thermal energy and transferred to the flowing medium through tubular heating elements.
01. Electrical Energy Conversion
Nickel-chromium resistance wire generates heat when electrical power is applied. High purity MgO insulation provides electrical insulation while maintaining efficient thermal conductivity.
02. Heat Transfer Through Sheath
Heat transfers from the resistance wire through the MgO insulation layer and metal sheath. Different sheath materials are selected according to temperature and corrosion conditions.
03. Process Medium Heating
The flowing medium absorbs thermal energy while passing through the heating chamber. Optimized flow design ensures uniform heating and stable outlet temperature.
ENGINEERING DESIGN
Advanced Structure For Efficient Heat Transfer
Tubular Heating Element Construction
Elekheat circulation heaters use industrial tubular heating elements consisting of metal sheath, high purity MgO insulation and nickel-chromium resistance wire.
- SS304 / SS316L / Incoloy sheath options
- High purity crystalline MgO insulation
- Nickel-chromium resistance wire
- Designed according to surface load requirements
- Suitable for continuous industrial operation
Internal Flow Chamber Design
The internal flow path is designed according to medium properties, flow velocity and heat transfer requirements.
Flow deflectors and internal baffles improve turbulence, increase heat transfer efficiency and reduce temperature differences inside the heating chamber.
- Flow rate optimization
- Reduced cold zones
- Improved outlet temperature stability
- Reduced overheating risk
TECHNICAL DATA
Industrial Circulation Heater Specifications
Each circulation heater is engineered according to heating capacity, medium characteristics, flow conditions, pressure requirements and installation environment.
| Parameter | Specification |
|---|---|
| Heating Capacity | 3kW – 1000kW |
| Operating Voltage | 220V / 380V / 415V / 690V |
| Heating Medium | Water, Thermal Oil, Hydraulic Oil, Air, Nitrogen, Industrial Gas, Chemical Fluids |
| Flow Rate | Customized according to medium properties and process requirements |
| Operating Temperature | -40°C to 700°C |
| Temperature Accuracy | ±1~5°C depending on control system configuration |
| Design Pressure | 0.6MPa – 10MPa+ |
| Heating Element | Tubular Electric Heating Element |
| Insulation Material | High Purity MgO |
| Sheath Material | SS304, SS316L, Incoloy 800/825, Copper and Special Alloys |
| Pressure Vessel Material | Carbon Steel, Stainless Steel, Alloy Steel |
| Connection Type | Flange, Threaded or Customized Connection |
| Flange Standard | ANSI / DIN / JIS / GB |
| Installation | Horizontal or Vertical Installation |
| Control System | PID / PLC / SSR / Customized Control Cabinet |
| Explosion Protection | ATEX / IECEx / Ex Designs |
PRODUCT RANGE
Custom Circulation Heater Solutions For Different Industrial Systems
Elekheat designs circulation heaters according to heating medium, operating temperature, pressure conditions and installation requirements.
Standard Liquid Circulation Heater
Designed for continuous heating of water, glycol, clean fluids and general industrial liquids.
Typical Applications
- Industrial water heating systems
- Cleaning and washing systems
- Process liquid circulation loops
- Temperature maintenance systems
Thermal Oil Circulation Heater
Designed for high temperature thermal oil systems requiring stable viscosity control and continuous heating.
Typical Applications
- Thermal oil heating systems
- Heavy oil viscosity reduction
- Industrial drying equipment
- Heat transfer oil circulation loops
Gas & Air Circulation Heater
Provides clean and accurate heating solutions for industrial gases, air and nitrogen systems.
Typical Applications
- Nitrogen preheating
- Compressed air heating
- Process gas heating
- Drying and heat treatment systems
High Pressure Circulation Heater
Engineered for pressurized pipeline systems requiring customized vessel design and reliable operation.
Design Features
- Pressure vessel construction
- Customized flange connections
- High pressure sealing design
- Industrial safety protection
Explosion Proof Circulation Heater
Designed for hazardous environments where flammable gases, vapors or liquids may exist.
Available Options
- ATEX certification
- IECEx certification
- Ex db terminal enclosure
- Hazardous area design
High Temperature Circulation Heater
Designed for demanding thermal processes requiring high temperature operation up to 700°C.
Applications
- High temperature gas heating
- Heat treatment systems
- Special chemical processes
- Industrial thermal equipment
MATERIAL ENGINEERING
Material Selection Based On Process Conditions
The correct material selection directly affects heater service life, corrosion resistance, heat transfer performance and long-term reliability.
Elekheat evaluates medium characteristics, operating temperature, pressure conditions and chemical compatibility before selecting suitable materials.
SS304
Suitable for clean water, general industrial fluids and applications requiring cost-effective corrosion resistance.
SS316L
Provides improved chloride resistance and is widely used for chemical fluids and demanding industrial environments.
Incoloy 800 / 825
Recommended for high temperature operation, thermal oil systems and continuous heating applications.
Hastelloy / Titanium
Used for aggressive chemical environments requiring excellent corrosion resistance.
| Application | Recommended Material | Reason |
|---|---|---|
| Clean Water Heating | SS304 | Good corrosion resistance and economical choice |
| Chemical Fluid Heating | SS316L / Hastelloy | Improved corrosion resistance |
| Thermal Oil System | Incoloy 800 / 825 | High temperature stability |
| High Temperature Gas | Incoloy 800 / 825 | Excellent oxidation resistance |
INDUSTRIAL APPLICATIONS
Circulation Heater Solutions For Industrial Process Systems
Elekheat provides customized circulation heating solutions for industries requiring stable temperature control, continuous operation and reliable heat transfer performance.
Chemical & Petrochemical Industry
Heating solutions for process fluids, pipelines and chemical production systems requiring accurate temperature control.
- Heavy oil viscosity reduction
- Reactor feed preheating
- Chemical fluid temperature maintenance
- Thermal oil circulation systems
Oil & Gas Industry
Designed for demanding oil and gas applications where reliable heating performance is required.
- Fuel oil heating
- Pipeline temperature maintenance
- Natural gas preheating
- Hazardous area heating systems
New Energy Industry
Precision temperature control solutions for clean energy manufacturing processes.
- Lithium battery electrolyte heating
- Slurry pipeline temperature control
- Hydrogen process gas heating
- Photovoltaic cleaning systems
Environmental Protection
Heating systems for emission treatment equipment and environmental process systems.
- VOC treatment preheating
- RTO / RCO gas heating
- Wastewater temperature control
- RO / UF system heating
Food & Pharmaceutical Industry
Clean and reliable heating solutions for temperature-sensitive production processes.
- Process water heating
- CIP cleaning systems
- Clean air heating
- Process fluid circulation
SYSTEM SOLUTIONS
Skid Mounted Circulation Heater Systems
For complete process heating solutions, Elekheat provides integrated skid-mounted systems including heating equipment, piping, instrumentation and control components.
Complete System Integration
- Electric circulation heater vessel
- Circulation pump system
- Expansion tank
- Pressure relief valve
- Temperature and flow sensors
- PLC control cabinet
- Process piping assembly
Factory Tested
Complete skid systems are assembled, electrically tested and function verified before shipment.
Reduced Installation Time
Pre-integrated systems simplify onsite installation, connection and commissioning.
OEM & EPC Integration
Designed for industrial equipment manufacturers, engineering companies and process projects.
ENGINEERING CAPABILITY
Customized Circulation Heater Design Process
Each heating system is designed according to process conditions, mechanical requirements and electrical specifications.
01. Process Requirement Review
Engineers evaluate:
- Heating medium
- Flow rate
- Inlet and outlet temperature
- Heating time
- Heat loss conditions
02. Thermal & Mechanical Design
Design according to:
- Required heating capacity
- Pressure rating
- Vessel dimensions
- Material compatibility
- Connection standards
03. Electrical Configuration
Customized electrical solutions including:
- Voltage selection
- Power configuration
- Temperature sensors
- Control cabinet
- Explosion-proof components
QUALITY CONTROL
Reliable Manufacturing And Testing Process
Each circulation heater undergoes inspection procedures before shipment to verify electrical safety, heating performance and mechanical reliability.
- Engineering drawing review
- Component and dimension inspection
- Heating element inspection
- Insulation resistance testing
- Dielectric strength testing
- Pressure testing when required
- Heating performance verification
FAQ
Frequently Asked Questions
What information is required for circulation heater selection?
To recommend a suitable circulation heater, please provide heating medium, flow rate, inlet temperature, outlet temperature, operating pressure, voltage and installation requirements.
What is the difference between a circulation heater and an immersion heater?
An immersion heater is installed directly inside a tank, while a circulation heater is installed externally in a pipeline or closed-loop system. Circulation heaters are suitable for continuous heating and accurate outlet temperature control.
Can circulation heaters be used for thermal oil heating?
Yes. Thermal oil circulation heaters are commonly used for high temperature process systems. Material selection and heating element design are customized according to operating temperature and oil characteristics.
How do you prevent overheating during operation?
Overheating protection is achieved through proper flow design, temperature sensors, control systems and safety protection devices.
Do you manufacture custom circulation heaters?
Yes. Elekheat provides customized designs according to power rating, voltage, temperature, pressure, material selection and installation requirements.
Do you provide explosion-proof circulation heaters?
Yes. Explosion-proof circulation heaters are available with ATEX, IECEx and hazardous-area protection options.
Need A Custom Industrial Circulation Heater?
Provide your heating medium, flow rate, temperature range, pressure conditions and installation requirements. Elekheat engineers will recommend the suitable heating solution for your process system.
