Special Electronic Intelligent High Precision Burner

Introduction

To maintain a high degree of combustion efficiency and adjustment precision, the Special Electronic Intelligent High Precision Burner for Boilers uses the German Siemens full electronic proportional adjustment system. This lowers fuel consumption and lowers running expenses for the user.

SWT new generation of Low Nitrogen Oxide (NOx) Burners are suitable for clean gas with low calorific value not less than 4500kcal/Nm3 such as natural gas, liquefied gas and city gas.

Performance characteristics of low nitrogen burners

According to the project requirements, the ultra-low nitrogen split electronic proportional gas burner is selected. This series of burners has the following performance characteristics:

1. The low-nitrogen burner adopts a split layout, built-in full electronic proportional adjustment system and parameter screen display to realize man-machine dialogue.

2. The unique combustion head structural design realizes the staged combustion of air and gas; flame temperature. The combustion head of the low-nitrogen type burner is constructed of high-temperature resistant stainless steel material.

3. NOX emissions are significantly reduced by using the flue gas recirculation technology (FGR), which allows them to fall below 30 mg/m³.

4. The front of the low-nitrogen burner's pipeline configuration has enough clearance and maintenance room, and maintenance is simple and dependable.

5. The low-nitrogen burner has low operating noise, the noise is less than 85db, and the exhaust emission meets the requirements of environmental protection.

6. The burner valve group of this project uses a pneumatic quick shut-off valve.

7. The German Siemens program control system, which includes the following features, is used with the low-nitrogen burner.

(1) The burner uses accurate fuel and damper actuators. These actuators are high-precision, and the stepping angle may reach 0.1°. As a result, the damper and gas valve openings take 900 steps to move from 0 to 90°, considerably improving the accuracy of the air volume and air volume management. As a result, it is possible to match fuel consumption and load as closely as possible, conserving energy and increasing combustion efficiency to 99.9%.

(2) Separate adjustment of fuel and air supply: the fuel and air valve are controlled by their respective actuators, and the fuel and air volume operation curves are set during the initial commissioning. The burner maintains a reasonable air/fuel ratio at all times during operation to reduce the heat loss caused by excess air or insufficient oxygen.

(3) The adjustment ratio of the burner can be increased: thanks to an improvement in the actuator's stepping angle accuracy, the fuel and air volumes of the small fire position can be reduced, and the adjustment ratio of the burner can be significantly increased, which promotes energy savings and a decrease in NOX emissions.

(4) Control the opening degree of the damper in accordance with the oxygen content in the flue gas emission: The opening degree of the damper can be controlled online in accordance with the oxygen content in the flue gas emission, allowing the burner to be controlled whether it is winter or summer or high or low altitude.

Schematic diagram of electronic proportional control system

8. The burner's combustion efficiency can approach 99.9%.

9. The burner makes sure that combustion occurs steadily and efficiently, that the flame does not veer off course while in use, and that it does not directly wash the tube wall.

10. There are numerous viewing holes available for the burner.

11. The air regulator is carefully machined, and the burner has an air inlet adjustment gear. The vanes, shafts, and casings are made of materials that can endure the greatest temperatures for which the burner is intended.

12. To show and mark the angular position of the adjustable damper blade, a mechanical indicating device is mounted on the air inlet adjusting device. The burner controller uses the connected electric device to control the operation and positioning of the intake air conditioning equipment.

13. A natural gas igniter for automatic igniting is included into the burner. All burners and igniters have the cooling air connections and appropriate seals. Automatic sequential ignition and ignition safety prevention are features that are present on every burner.

14. A flame monitor is included with the burner.

15. The burner control system has automated fuel leak detection, front and back furnace purging, automatic ignition, automatic program start and stop, flameout prevention, low pressure protection, safety interlock protection and combustion, load regulation, and more.

About SWT

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