The present application relates to the technical field of boiler
combustion and discloses a multi-stage
coal powder burner, which comprises an outer
combustion cylinder, an inner
combustion cylinder, an adjuster and a combustion stabilizer, the inner combustion cylinder is arranged inside the outer combustion cylinder, a channel is formed between the outer combustion cylinder and the inner combustion cylinder, the adjuster is connected with the outer combustion cylinder, the adjuster is used for guiding
mixed gas flow, the
mixed gas flow can be divided into a first-stage gas flow flowing through the inner combustion cylinder and a second-stage gas flow flowing through the channel, the adjuster is used for adjusting the flow of the first-stage gas flow and the second-stage gas flow, the combustion stabilizer is connected with the inner combustion cylinder, the combustion stabilizer is provided with a
flame spout, the
flame spout is arranged in the inner combustion cylinder and is used for spouting a
flame to ignite the first-stage gas flow and the second-stage gas flow step by step. The multi-stage
coal powder burner of the present application can adapt to different
coal types to realize rapid ignition and stable and sufficient combustion.