Flue Gas Heater

The Flue Gas Electric Heater is designed for industrial gas heating processes where stable temperature control, reliable operation, and high-temperature performance are essential. It can be manufactured with carbon steel, SUS304 stainless steel, SUS310S stainless steel, or other suitable materials according to the operating conditions and heating requirements.

With flexible vertical and horizontal configurations, high-temperature-resistant heating elements, intelligent power regulation, and multiple safety protection systems, this electric heater provides a practical heating solution for power plants, chemical facilities, pharmaceutical production, and environmental protection equipment.

Flexible Materials for Different Heating Conditions

Different industrial processes require different levels of corrosion resistance, temperature resistance, and mechanical strength. The flue gas electric heater can therefore be manufactured using carbon steel, SUS304 stainless steel, SUS310S stainless steel, and other appropriate materials.

Material selection can be customized according to the gas composition, operating temperature, heating medium, installation environment, and process requirements. This helps the heater maintain stable performance under different industrial conditions.

High-Temperature Heating up to 800°C

For processes requiring an outlet temperature above 600°C, the heater can use Incoloy 840 or Incoloy 800 high-temperature-resistant electric radiant heating tubes.

The outlet temperature can reach up to 800°C, making the equipment suitable for demanding flue gas heating and thermal treatment applications. High-temperature-resistant heating elements also provide better reliability when the system operates continuously under severe thermal conditions.

Vertical and Horizontal Configurations

The flue gas electric heater is available in both vertical and horizontal configurations to accommodate different plant layouts.

The vertical type has a relatively small floor footprint, making it suitable for installations where ground space is limited. However, sufficient installation height needs to be available.

The horizontal type requires more floor space but has fewer restrictions on overall installation height. This makes it suitable for facilities where vertical space is limited.

The configuration can be selected according to available installation space, existing pipelines, gas flow direction, and equipment layout.

Efficient Heating with a Professional Deflector

The heater uses flange-type electric heating tubes as the primary heating elements. A professionally designed gas-flow deflector is installed inside the heating chamber to optimize the flow path.

The deflector helps distribute the flue gas more evenly around the heating tubes, allowing the heating medium to absorb heat efficiently. This improves heat transfer while reducing the risk of localized overheating caused by uneven gas flow.

The result is a more stable heating process and better temperature uniformity throughout the system.

Precise Power Regulation for Process Control

To meet demanding industrial temperature-control requirements, the electric heater can be equipped with a power regulator using a 4–20 mA continuous control signal.

The heating power can be continuously adjusted according to the process temperature rather than simply switching the heater fully on or off. This allows the heating system to respond more smoothly to changes in operating conditions.

With intelligent power adjustment, the system can achieve process control accuracy of approximately ±1°C, depending on the overall control configuration and application conditions.

Intelligent PID Temperature Control

The flue gas electric heater can use a digital intelligent temperature controller with PID fuzzy adjustment for more precise temperature management.

A non-contact SSR control system is used to regulate the heating output, reducing mechanical switching operations and supporting stable long-term operation.

The control system can also incorporate dual-instrument protection, providing an additional layer of temperature monitoring and helping reduce the risk of abnormal operating conditions.

For automated production lines, the heater can be integrated with a PLC programmable control system and HMI touchscreen. It can also communicate with an upper-level control system for centralized monitoring and process management.

Multiple Safety Protection Functions

Industrial gas heating equipment requires reliable protection because it may operate at high temperatures and under continuous-duty conditions.

The flue gas electric heater can be equipped with multiple protection functions, including:

• Over-temperature protection

• Anti-dry-burning protection

• Over-current protection

• Short-circuit protection

• Leakage protection

• Fault self-checking

• Sound and light alarm

• Heater surface temperature protection

• Outlet temperature upper-limit protection

The heater surface temperature and outlet gas temperature can be monitored separately to provide dual temperature protection. If abnormal conditions occur, the control system can respond accordingly to help protect the heating elements and connected process equipment.

Suitable for Environmental and Industrial Applications

The flue gas electric heater is mainly used in industrial processes that require controlled gas heating, thermal treatment, or temperature elevation before downstream treatment equipment.

Typical applications include denitration systems in power plants, environmental protection equipment, and VOC-related treatment systems. It can also be integrated into CO and RTO systems used in chemical plants, pharmaceutical facilities, and other industrial production environments.

Its combination of high-temperature capability, intelligent control, and safety protection makes it suitable for both new installations and customized industrial heating systems.

Designed for Reliable Industrial Operation

From material selection and heating element configuration to deflector design, temperature control, safety protection, and automation, every part of the flue gas electric heater is designed around the actual process requirements.

Whether the project requires a compact vertical structure, a horizontal installation, outlet temperatures approaching 800°C, or PLC-based centralized control, the equipment can be configured to match the application.

For industrial facilities looking for a controllable and reliable method of heating flue gas, the Flue Gas Electric Heater provides a flexible solution for high-temperature gas heating, environmental protection processes, and demanding thermal treatment applications.