EI-GNQ Dual-Fuel Axial-Flow Burner for Asphalt Mixing Plants

EI-GNQ Dual-Fuel Asphalt Burner Overview

The EI-GNQ Series is developed for the heating and aggregate-drying requirements of asphalt mixing plants. It combines gas and oil firing capability with an axial-flow combustion structure and is available in six models from EI300GNQ to EI3000GNQ.

Rated output ranges from 3,750 kW to 31,000 kW. This allows the series to cover different asphalt production scales without treating burner capacity as a one-size-fits-all specification.

In asphalt production, burner selection has to account for more than nominal plant capacity. Aggregate moisture, required drying temperature, fuel properties, drum conditions and actual production load all affect the heat demand. The EI-GNQ model range provides a starting point for matching the combustion system to these operating conditions.

For buyers comparing different combustion solutions, EBICO also offers a broader range of asphalt mixing plant burners for different fuel and control requirements.

1. Designed for Asphalt Mixing Plant Heat Demand

Asphalt production requires a thermal source that can withstand:

• Large and rapid temperature fluctuations

• Abrasive dust environments

• Long production cycles without shutdown

• Variable fuel availability

The EI-GNQ burner is engineered as a dedicated heating solution for asphalt drum mixers and batch plants, where flame stability directly determines drying efficiency, fuel consumption, and overall plant output. Its combustion structure allows heat to be delivered deep into the drying drum with minimal thermal loss.

2. Gas & Oil Dual-Fuel Operating Logic

The EI-GNQ series supports both gaseous fuel and liquid fuel within the same burner platform, allowing operators to adapt instantly to different energy supplies.

This dual-fuel logic enables:

• Free switching between gas and oil according to fuel availability

• Stable ignition under both combustion modes

• Flexible energy cost control in different regions

• Continuous production even during temporary fuel supply limitations

Rather than being locked to a single energy source, the system is built as a fuel-adaptive combustion unit for diversified plant environments.

3. Axial-Flow Combustion Structure

The defining feature of this series lies in its axial-flow flame formation principle.

Unlike conventional radial flame burners, the axial-flow structure:

• Directs the flame straight along the burner axis

• Produces a long, concentrated, and high-energy flame core

• Enhances heat penetration inside the drying drum

• Reduces unstable turbulence at the flame root

This structure is particularly suited to asphalt aggregate drying, where uniform heat exposure directly affects moisture removal efficiency and finished mixture quality.

4. High-Power Output Coverage: EI300GNQ to EI3000GNQ

The EI-GNQ range is structured to serve both medium and large asphalt plants through a progressive power ladder:

• EI300GNQ → 3,750 kW

• EI600GNQ → 7,000 kW

• EI1200GNQ → 13,500 kW

• EI1800GNQ → 21,000 kW

• EI2500GNQ → 27,000 kW

• EI3000GNQ → 31,000 kW

This wide coverage allows one burner series to support:

• Small batch asphalt stations

• Medium continuous mix plants

• Large-scale high-throughput asphalt production lines

5. Dual Energy Consumption Adaptability

Each model provides both gas consumption and oil consumption operating references, allowing precise matching to different heating demands:

• Gas energy suitability for clean and rapid startup

• Oil energy suitability for high-density heat output

• Balanced flame stability under transitional load conditions

This makes EI-GNQ suitable for regions where fuel infrastructure varies or where dual-fuel redundancy is required for risk control.

Technical Identity Summary

• Fuel Type: Gas & Oil Dual-Fuel

• Combustion Structure: Special Axial-Flow Flame

• Application Focus: Asphalt Mixing Plant

• Power Range: EI300GNQ – EI3000GNQ (3.75–31 MW Class)

• Operating Character: High-load, continuous industrial heating

  
  

Application Scope

The EI-GNQ axial-flow dual-fuel burner is applied in:

• Asphalt mixing plants

• Aggregate drying systems

• Road construction material processing lines

• Thermal oil furnaces used in asphalt production

• Industrial heating units associated with paving material production

FAQs

Can the EI-GNQ replace an existing asphalt plant burner?

A replacement project is possible only after the existing installation has been evaluated. Burner platform dimensions, dryer connection, available combustion air, fuel system, electrical supply and required heat output should be checked before a replacement configuration is confirmed. Supplying drawings and photos of the existing burner installation can make this review more efficient.

Are the published gas and oil consumption figures the exact consumption at every site?

No. They are reference values associated with the published model ratings. Actual fuel use can change with fuel calorific value, aggregate moisture, required material temperature, production rate and combustion conditions. Fuel cost calculations should therefore use the project's actual operating data.

What information should be prepared for a retrofit burner inquiry?

Useful information includes the asphalt plant manufacturer and model, production capacity, existing burner model, drum dimensions or drawings, current fuel type, required alternative fuel, photographs of the burner platform, utility conditions and any applicable emission requirements.

What should be checked before commissioning a dual-fuel asphalt burner?

Fuel pipelines and connections should be correctly prepared, the combustion-air path should be unobstructed, safety and flame-monitoring devices should be checked, and the burner-to-dryer installation should match the approved configuration. Commissioning should follow the supplied technical documentation and applicable local safety requirements.

What burner components require routine inspection in an asphalt plant environment?

Routine maintenance normally includes checking fuel filters and lines, combustion-air passages, fan-related components, ignition and flame-detection components, electrical connections and parts exposed to dust or fuel contamination. Inspection intervals should be set according to fuel quality, operating hours and site conditions.

Should a larger burner always be selected to leave extra production capacity?

Not necessarily. Oversizing does not replace proper thermal calculation. Burner output should be matched to the actual drying requirement and usable firing range of the plant. Correct sizing gives the combustion system a more appropriate operating range as production demand changes.