PURPOSE: To enhance safety, by coaxially providing channels for combustion gas and oxygen which open into a reaction chamber and are separated from each other and surrounded by water channels.
CONSTITUTION: When pressure in a reaction chamber is normal or high, oxygen or a mixture of oxygen and steam flows into the reaction chamber through a channel 2 and an annular gap 7, and a fuel gas flows into the reaction chamber through a channel 1 and a nozzle 16 composed of a confuser 4, an annular nozzle 5 and a diffuser 6. When the fuel gas is introduced, a spark is formed in an ignition area 12, so that a mixture of fuel gas and oxygen is ignited in a region of a radius-of-curvature portion 8. After the ignition, an electrical transformer is deenergized, so that the reaction chamber is operated under working pressure. An electrode 11 provided in the channel for fuel gas is cooled by the fuel gas so that it is protected against radiation heat from the reaction chamber and the flow of fuel gas prevents dirty solid particles from adhering to a flame monitor 7. A burner having such structure can be used as a pilot burner for a reactor which oxidizes pulverized coal.
KURISUCHIAN RUUTAA
KURISUCHIAN RIIDERU
DEIITOMAA DEGENKORUPU
KURUTO SHIYUTERUBA
BUORUGANGU ZAIDERU
BABCOCK WERKE AG
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