The present invention provides a pulverized
coal burner for ignition and stability and an ignition method, belonging to the technical field of thermal power generation, the pulverized
coal burner for ignition and stability comprises an ignition gun, an inlet section, a pre-
combustion chamber and a
flame transmission tube; a
combustion zone and a secondary
air channel for sending secondary air into the
combustion zone are arranged in the pre-
combustion chamber; the front end of the inlet section extends into the pre-
combustion chamber and is aligned with the combustion zone, and the rear end is located outside the pre-
combustion chamber as a primary air inlet; the ignition gun is installed at the center of the front end of the inlet section, and the front end extends into the pre-combustion chamber and is aligned with the combustion zone; the rear end of the
flame transmission tube is connected to the front end of the pre-combustion chamber, and is used to send the pulverized
coal flame burning in the combustion zone to a preset position in the main burner, and meet with the pulverized coal
airflow of the main burner. The present invention uses pulverized coal as fuel, which is consistent with the existing fuel of the power
plant, can completely replace the
oil burner and the
plasma ignition device, can realize the ultra-
low load stable combustion and flexibility adjustment function of the power
plant boiler, and the thermal power
plant does not need to use oil as fuel.