Our business[Combustion Equipment > Burner and Associated Equipment]

HOME > Our business > Combustion Equipment > Burner and Associated Equipment

Burner and Associated Equipment

IRSH TYPE REGENERATIVE LOW NOx BURNER

Heating Furnace featuring the complete arrangements of Regenerative Burners

draw

IRSH TYPE REGENERATIVE LOW NOx BURNER uses a pair of burners with built-in regenerators firing alternately at short intervals. The exhaust gas and combustion air are blown into the regenerator by turns. Thanks to this, the high-temperature flue gas is recovered as source of preheating air. The burner is the newest energy-saving combustion system featuring low NOx technology of decreasing combustion velocity by jetting out fuel and combustion air from the separate burner nozzles directly into the high temperature furnace.

Features

High heat exchange efficiency
- Improved fuel consumption rate.
Improved furnace temperature distributions by high-temperature air combustion
- High quality production is realized.
Compact waste heat recovery system
- Integration of regenerative media and burner has been realized.
Low NOx emission achieved by combustion with flame temperature suppression
- Substantial reduction of NOx products.
Reduced furnace size
- Improved uniform heating and thermal capability.
Easy retrofitting to existing furnaces
- Suitable to various types of industrial furnaces.

Burner Structure and Control Principle

IRSH TYPE REGENERATIVE LOW NOx BURNER is composed of air register, primary gas nozzle, secondary gas nozzle, pilot burner and regenerative box. Combustion air passes through the regenerative box and the air thus preheated by the hot regenerative media (alumina ball).
The highly preheated combustion air will be then jet out at high velocities from the air register nozzle into the furnace. In times of low furnace temperature, the burner jets out fuel gas from the primary gas nozzle while jetting out highly preheated combustion air from the air nozzle of the air register. When the furnace temperature exceeds the ignition temperature, the burner stops gas supply to the primary gas nozzle and starts jetting out fuel gas from the secondary gas nozzle, which generates the gas recirculation through furnace inside thus enabling slow combustion. The burner is featuring low NOx technology of fuel direct injection model.

RSH TYPE REGENERATIVE LOW NOx BURNER

Aluminum Melting Furnace with Regenerative Burner

RSH TYPE REGENERATIVE LOW NOx BURNER uses a pair of burners with built-in regenerators firing alternately at short intervals.
The exhaust gas and combustion air are blown into the regenerator by turns. Thanks to this, the high-temperature flue gas is recovered as a source of preheating air.
The newest energy-saving combustion system featuring the newly developed two-stage combustion technology and exhaust gas recirculation system has provided exceptionally low NOx as well as highly efficient heat recovery. This burner is the highly efficient energy-saving system developed jointly by three companies, ROZAI, SUMITOMO METAL INDUSTRIES and SUMIKIN MANAGEMENT for the purpose of promoting energy-saving and eco-friendly industrial heating device. It achieved good results in the commercial test running.

Features

High heat exchange efficiency
- Waste heat recovery is nearly up to 90%.
Improved furnace temperature distributions by switching combustion
- Uniform furnace temperature distribution is secured.
Lower plant cost with this energy-saving burner
- Reducing plant cost by 10 to 30%.
Compact waste heat recovery system
- Integration of regenerative media and burner has been realized.
Low NOx emission
- Substantial reduction of NOx products.
Ideal for waste heat recovery of heating furnace
- Flame temperature close to in oxygen-enriched combustion is available.
Easy retrofitting to existing furnaces
- Suitable to various types of industrial furnaces.

Burner Structure and Control Principle

RSH TYPE REGENERATIVE LOW NOx BURNER is composed of air register, gas nozzle, burner tile and regenerative box, and has a simple structure.
Combustion air passes through the regenerative box and the air thus preheated by the hot regenerative media, alumina ball. The highly preheated combustion air will be then drawn into air register and divided into primary air and secondary air. Together with cooling air, at high velocity of 60-100 m/sec., fuel gas jets out from the air-cooled and insulated gas nozzle which located in the center of air register, then it will be mixed with primary air and the combustion starts. This high-speed jet stream for the optimum self-circulation of in-furnace atmosphere prevents the rise of flame temperature and stabilizes the flame. And also two-stage combustion by mixing with secondary air jetted out from the slit located in inner tile periphery realizes the suppression of maximum flame temperature and flame stability, and the combustion ends. As just described, the gas recirculation through furnace inside and the two-stage combustion method make it possible to lower the maximum flame temperature, thereby achieves the drastic suppression of NOx generation.

Burner Structure and Control Principle

OTHER BURNERS

High-performance Models and Their Designs Meeting the Specification of Thermal Equipment

- Ultra High Temp. Ceramics Burning Kiln
Since thermal energy represents a major proportion of overall industrial product cost, the advanced level of combustion technology is a very important factor for the performance of thermal equipment. As part of efforts to improve the energy-saving technology for industrial furnaces and heating equipment, we have been developing and upgrading high-performance combustion equipment for many years. These efforts have led us to successfully manufacturing various types of special burners, in addition to general burners such as oil burners, gas burners, hot-air burners, low NOx burners, and meeting industry demands for high-efficiency combustion system by adopting latest combustion technology.