CUSTOM GAS HEATING SOLUTION
Electric Inline Process Gas Heater
Custom Electric Heating for Air, Nitrogen, Compressed Air and Process Gas Pipelines
Xiangyuan Machinery designs and manufactures electric inline process gas heaters for closed pipeline gas heating applications that require stable outlet temperature, pressure-bearing construction and customized control integration.
Each heater can be engineered according to gas type, gas composition, flow rate, inlet temperature, required outlet temperature, working pressure, pressure drop, installation space, control method and safety requirements.
Product Overview
An electric inline process gas heater is a closed-pipeline electric heating unit installed directly in a gas pipeline or process loop. Gas enters the heating chamber through the inlet flange, exchanges heat with the electric heating elements, and leaves the heater at the required outlet temperature.
The heater is mainly composed of a pressure-bearing shell, electric heating element bundle, inlet and outlet flanges, internal flow guide structure, thermal insulation layer, terminal box, temperature sensors and an optional control cabinet.
Compared with duct-mounted heaters used for low-pressure airflow, an inline process gas heater is more suitable for sealed gas pipelines, pressure-bearing gas systems and process applications requiring controlled outlet temperature.
It can be supplied as a single heater body or as a complete heating system with control cabinet, temperature instruments, pressure monitoring, over-temperature protection and interlock functions.
Key Features
Gas-Specific Thermal Design
Heating power is calculated from gas type, flow rate, pressure, inlet temperature and required outlet temperature.
Pressure-Bearing Inline Construction
The heater shell, nozzles and flanged connections are designed for the stated operating and design pressure.
Removable Heating Element Bundle
Flanged construction supports inspection, cleaning, maintenance and replacement of the heating element bundle.
Material Options for Process Gas
Carbon steel, SS304, SS316L, SS310S, Incoloy and selected alloys can be evaluated according to gas composition and temperature.
Stable Outlet Temperature Control
PID, SCR, staged control or PLC control can regulate outlet gas temperature according to the process requirement.
Low Pressure Drop Flow Layout
Element spacing and internal flow passages are arranged around the allowable pressure drop and gas velocity.
Flow and Temperature Interlocks
Flow, pressure, outlet temperature and element over-temperature signals can be used for permissive, alarm and trip functions.
Flexible Installation Arrangement
Horizontal, vertical or skid-integrated installation can be evaluated according to piping layout and maintenance space.
Standalone or Packaged Supply
The heater can be supplied alone or integrated with instruments, valves, piping, insulation and a control cabinet.
Typical Technical Parameters
The following parameters are for reference only. Final heater design can be customized according to gas medium, flow rate, inlet and outlet temperature, pressure, installation method, material compatibility, and control requirements.
| Parameter | Customizable Range / Options |
|---|---|
| Product Name | Electric Inline Process Gas Heater |
| Heating Medium | Air, compressed air, nitrogen, inert gas, process gas, exhaust gas and flue gas |
| Heating Power | 2 kW – 2000 kW, customized according to process requirements |
| Outlet Temperature | Common designs up to 750°C; higher-temperature designs can be evaluated according to working conditions |
| Working Pressure | Atmospheric pressure to 1.0–2.5 MPa for common designs; higher-pressure designs can be customized after engineering review |
| Voltage | 220V / 380V / 415V / 440V / 480V, 50Hz or 60Hz |
| Installation | Horizontal or vertical pipeline installation |
| Connection | Flange connection, customized according to pipeline standard |
| Shell Material | Carbon steel, stainless steel 304, 316L, 310S, or customized alloy material |
| Heating Element Material | Stainless steel, Incoloy 800, Incoloy 840, or other high-temperature alloy |
| Control Method | PID control, SCR power control, contactor control, PLC control, control cabinet optional |
| Insulation | External thermal insulation layer available |
| Protection Options | Over-temperature, flow interlock, pressure protection, grounding, leakage protection, emergency stop |
| Hazardous-Area Design Option | Explosion-proof terminal boxes and control configurations can be evaluated according to the hazardous-area classification and project requirements. |
| Gas Flow Rate | Customized according to process flow rate and required temperature rise |
| Pressure Drop | Reviewed according to gas flow rate, heater structure and allowable system pressure drop |
| Temperature Sensor | Thermocouple, RTD or customized temperature sensor |
Structure, Materials, Control and Safety
Structure of the Heater
The heater body is designed as a closed pressure-bearing heating chamber. Gas enters from the inlet flange, passes through the internal flow path, exchanges heat with the electric heating element bundle, and exits from the outlet flange at the required temperature.
Main structure can include:
- Pressure-bearing heater shell
- Flanged inlet and outlet
- Electric heating element bundle
- Internal support and flow guide structure
- Temperature sensor port
- Pressure monitoring port
- Terminal box or explosion-proof junction box
- External thermal insulation layer
- Optional skid base and control cabinet
Materials and Customization
Material selection depends on gas composition, working temperature, pressure, moisture content, corrosion level and service environment.
For normal air or compressed air heating, carbon steel or SS304 can be selected for common applications. For humid gas, corrosive gas or chemical process gas, SS316L or selected corrosion-resistant alloy materials can be considered.
For high-temperature gas heating, SS310S, Incoloy 800, Incoloy 840 or other high-temperature alloy materials may be used according to actual operating conditions.
Control System
The electric inline process gas heater can be supplied with an independent control cabinet for manual operation, automatic temperature control or PLC-based process control.
Control options can include:
- Outlet gas temperature control
- Heater shell temperature monitoring
- Heating power step control
- SCR / thyristor power regulation
- PID closed-loop control
- Local and remote operation
- Temperature and pressure display with alarm
- Flow interlock and over-temperature shutdown
- Signal interface with customer DCS or PLC system
Safety Protection
Gas heating applications require reliable protection against element overheating, abnormal pressure, insufficient gas flow and electrical failure.
Available safety protection options include:
- High-limit temperature protection
- Heater shell temperature monitoring
- Outlet gas temperature monitoring
- Flow switch or differential pressure interlock
- Pressure transmitter or pressure switch
- Overload, short-circuit, leakage, and grounding protection
- Emergency stop
- Explosion-proof junction box or explosion-proof control system for hazardous-area applications
Typical Applications
Process Gas Pipeline Heating
Heating process gas in closed pipelines before production equipment or downstream process sections.
Industrial Air Heating
Heating compressed or process air where a pressure-bearing inline heater is required.
Nitrogen and Inert Gas Heating
Preheating nitrogen or compatible inert gases for purging, blanketing, drying and process use.
Chemical Process Heating
Heating compatible gases used in reactors, stripping, regeneration and controlled chemical processes.
Drying and Dehumidification
Supplying controlled heated gas for industrial drying and moisture-removal systems.
Heat Treatment and Furnace Gas
Heating compatible process gas before heat-treatment furnaces and thermal-processing equipment.
Regeneration Systems
Providing heated gas for adsorption, desiccant, catalyst or filter-regeneration processes.
Environmental Treatment Systems
Heating compatible gas streams used in selected exhaust, treatment and pollution-control processes.
Test Bench Gas Heating
Providing controlled gas temperature for industrial test benches, laboratories and pilot systems.
Pipeline Warm-Up
Heating gas used during commissioning, startup and compatible pipeline warm-up procedures.
Skid-Mounted Gas Heating Packages
Integrating the heater with valves, instruments, controls and piping on a modular skid.
Customized Industrial Gas Systems
Providing drawing-based gas heating for specialized industrial equipment and process systems.
How to Select the Right Gas Heater
To design a suitable electric inline process gas heater, please provide the following information when available.
1. Gas type and gas composition
Provide the gas name and composition, especially if the gas contains moisture, corrosive components, dust, oil mist or combustible components.
2. Gas flow rate
Provide the normal flow rate and maximum flow rate. This is required for heating power calculation and pressure drop review.
3. Inlet temperature
Provide the normal inlet gas temperature and the lowest possible inlet temperature during operation.
4. Required outlet temperature
Provide the target outlet gas temperature and allowable temperature tolerance.
5. Working pressure
Provide the normal working pressure and maximum design pressure of the gas pipeline.
6. Allowable pressure drop
If the system has a pressure drop limit, provide the allowable pressure drop across the heater.
7. Pipeline size and flange standard
Provide pipeline diameter, flange standard, flange rating and connection direction.
8. Installation direction and available space
Confirm whether the heater will be installed horizontally or vertically, and provide available length, width, height and maintenance space.
9. Required heating power or process capacity
Provide the required heating power if already calculated. If not, Xiangyuan Machinery can calculate it according to gas flow rate and temperature rise.
10. Moisture, corrosion, or dust content in the gas
Gas moisture, corrosive components and dust content affect material selection, sealing design and maintenance requirements.
11. Hazardous area requirement
Confirm whether the heater will be used in a hazardous area and whether explosion-proof design is required.
12. Voltage and frequency
Provide supply voltage, phase and frequency, such as 380V 3-phase 50Hz or 480V 3-phase 60Hz.
13. Control method and automation requirement
Confirm whether manual control, PID control, SCR power regulation, PLC control, remote signal or DCS communication is required.
14. Required safety protection
Confirm requirements for over-temperature protection, flow interlock, pressure monitoring, leakage protection, grounding protection and emergency stop.
15. Whether a complete heating skid or control system is needed
Let us know whether you need only the heater body, a heater with control cabinet, or a complete skid-mounted gas heating system.
Frequently Asked Questions
Common questions about electric inline process gas heaters for industrial pipeline gas heating applications.
What is an electric inline process gas heater?
An electric inline process gas heater is a closed-pipeline electric heating unit installed directly in a gas pipeline or process loop. Gas flows through the heater body, exchanges heat with the electric heating elements, and leaves the heater at the required outlet temperature.
What gases can be heated by an inline process gas heater?
It can be customized for air, nitrogen, compressed air, process gas, exhaust gas, flue gas and selected industrial gas applications. Material, power, pressure and safety design should be reviewed according to gas composition, flow rate and temperature requirements.
What information is needed to design a process gas heater?
Typical design information includes gas type, gas flow rate, inlet temperature, required outlet temperature, working pressure, allowable pressure drop, voltage, installation direction, control method and safety protection requirements.
Can the heater be supplied with a control cabinet?
Yes. The heater can be supplied as a single heater body or as a complete heating system with a control cabinet, temperature instruments, PID control, SCR power regulation, flow interlock, over-temperature protection and emergency stop functions.
Can explosion-proof design be provided?
Explosion-proof configurations, including terminal boxes and control systems, can be provided where applicable. The final design is determined according to the hazardous-area classification, gas group, temperature class, heating medium and project requirements.
Why Choose Xiangyuan Machinery
Xiangyuan Machinery provides custom industrial electric heaters, heating elements and complete electric heating systems for demanding process applications. Each electric inline process gas heater can be engineered according to real gas conditions, temperature requirements, pressure level, installation layout, material requirements, control logic and safety requirements.
Thermal & Material Engineering
Custom design according to real working conditions Wide temperature, pressure, and power range
Flexible Mechanical Arrangement
Material selection for different gas compositions
Control & Safety Integration
Integrated heater and control cabinet supply Optional explosion-proof design for hazardous areas
Complete Project Supply
Support for non-standard industrial heating projects Factory inspection before delivery
Need a custom electric gas heater for your pipeline?
Tell us your gas type, gas composition, flow rate, inlet temperature, required outlet temperature, working pressure, pipeline size, voltage and installation conditions. Xiangyuan Machinery can customize electric inline process gas heaters for closed pipeline gas heating applications.