Concentrated phase high-temperature oxygen-enriched oilless ignition combustion apparatus

Abstract

The invention relates to a dense-phase high-temperature oxygen-enriched oil-free ignition combustion device, which solves the defects that the prior art is high in energy consumption, unstable in fire, low in combustion intensity, easily worn in equipment and narrow in the adaptation range to coal types. The device comprises an ignition pulverized-coal nozzle which is arranged in the center of a shell. An outer port of the ignition pulverized-coal nozzle and an ignition chamber are connected with a central shaft, and an inner port of the ignition pulverized-coal nozzle is communicated with an ejection opening of an ignition device, wherein the ignition device comprises a pulverized-coal conveying pipe the inside of which is provided with an oxygen conveying pipe; an outlet of the pulverized-coal conveying pipe and a gas outlet of the oxygen conveying pipe are communicated with the inner port of the ignition pulverized-coal nozzle respectively so as to form the ejection opening; and a heating system is arranged outside the pulverized-coal conveying pipe the inside of which is provided with the oxygen conveying pipe. The device has the advantages of low energy consumption, stable reliable fire, high combustion intensity, equipment not easy to wear and wide adaptation range to coal types.

Description

technical field

[0001] The invention relates to a guide flare igniter in an ignition device, in particular to a dense-phase high-temperature oxygen-enriched oil-free ignition and combustion device. Background technique

[0002] Coal is China's main energy source. Although China's coal resources are abundant, the types of coal are variable and the quality of coal is poor. When the pulverized coal furnace of a thermal power plant in the power industry is ignited and started in a cold furnace, the conventional ignition and start method generally adopts a large oil combustion device installed in the secondary air port. The total rated fuel consumption of the oil gun of the oil combustion device is about When the load is 30% of the combustion heat, it needs to last for several hours, so that all parts of the furnace reach a high temperature before putting in pulverized coal for combustion, and after mixing and burning to a certain load, the oil is gradually withdrawn according to...

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