The ignition methods of industrial burners mainly include the following:

Automatic ignition: Modern industrial burners are typically equipped with automatic ignition systems, which can involve either electric spark ignition or high-temperature surface ignition. Electric spark ignition involves generating a high-voltage arc to ignite the fuel-air mixture.

External flame propagation: This is a traditional ignition method where the flame from the main burner (already ignited) is directed to an adjacent burner to be ignited, achieving ignition through flame propagation.

Preheated air ignition: In this method, air is preheated to a temperature sufficient to ignite the fuel, which is then mixed with the fuel and ignited.

Torch ignition: In certain situations, a specialized torch may be used for ignition, especially when starting up large industrial furnaces.

It is important to note that when selecting and implementing ignition methods, safety, reliability, and compatibility with specific types of industrial burners and application scenarios must be considered. Additionally, the ignition process must comply with relevant safety regulations and standards.