End Fired Furnace Combustion Control System

An end fired furnace combustion control system is a specialized industrial solution engineered specifically for end-fired glass melting furnaces. This system precisely manages the combustion process by regulating fuel flow, combustion air supply, flame characteristics, and thermal distribution across the furnace. The primary objectives are achieving stable melting conditions, maintaining consistent glass quality, and maximizing energy efficiency.

The chemical reaction is the oxidation between fuel and combustion air, occurring instantaneously upon ignition. However, the overall combustion performance and flame behavior are determined by the mixing dynamics, which are further influenced by furnace temperature profiles and process specifications.

Whether the system fires gas or oil, once fuel enters the combustion chamber, the combustion process follows three fundamental stages:

• Fuel is uniformly mixed with combustion air.
• The fuel-air mixture is elevated to its ignition temperature.
• Upon ignition, the fuel reacts with oxygen, releasing heat, light, carbon dioxide, and water vapor as primary byproducts.

The end fired furnace combustion control system consists of the following integrated control modules:

The regenerator is a critical component in end fired furnace systems, widely adopted for preheating combustion air and delivering exceptional waste heat recovery efficiency. With this system, combustion air can be preheated to temperatures between 1200°C and 1350°C, significantly reducing fuel consumption and improving thermal efficiency.

The furnace combustion air system comprises the following key components:

The double deck reversing unit is a critical mechanism for the periodic reversal operation in end fired furnaces. It enables alternating firing and exhaust cycles across the twin regenerators, ensuring continuous preheating of combustion air and efficient heat recovery.

The double deck reversing unit consists of:

• Actuator – Drives the reversing mechanism with precise timing control
• Slide valve – Directs the flow of combustion air and exhaust gases alternately
• Damper – Regulates gas flow volume and pressure during each cycle

The reversing cycle is typically controlled by PLC logic, with adjustable reversal intervals based on furnace operating conditions and temperature requirements.

The control system employs a closed-loop control strategy to maintain optimal combustion conditions:

• Fuel-Air Ratio Control – Continuously adjusts the air-to-fuel ratio to achieve complete combustion while minimizing excess oxygen
• Temperature Control Loop – Monitors firing end temperature via thermocouples and modulates fuel input accordingly
• Pressure Control Loop – Maintains stable furnace pressure to prevent air ingress or flame instability
• Oxygen/CO Trim Control – Analyzes flue gas composition to fine-tune combustion efficiency in real time

Q: What is JEFFER Engineering and Technology Co., Ltd.?

A: JEFFER Engineering and Technology Co., Ltd. is a professional engineering enterprise specializing in project design, engineering technology consulting, EPC (Engineering, Procurement, and Construction), and comprehensive project operation management services.

Q: Does JEFFER offer customized combustion control system designs?

A: Yes, we provide complete end fired furnace combustion control solutions, including control logic design, equipment selection, system integration, and full-system drawings tailored to your specific production requirements and site conditions.

Q: What automation platforms do you support for the control system?

A: We support major automation platforms including PLC and DCS systems, with customizable control algorithms and HMI interfaces as per client preferences.