To provide a combustible gas mixer by which a premixed gas for reforming can be produced by uniformly mixing a high-pressure and high-temperature combustible gas with an oxygen-containing gas without inducing abnormal combustion such as backfire and spontaneous fire.
The combustible gas mixer comprises a mixing mechanism 20 equipped with a premixing chamber 22 in which a premixed gas is produced, and a backfire preventing mechanism 30 to prevent backfire located in a portion from which the premixed gas is ejected to the outside of the mixer, wherein ejection nozzles 32 in the backfire preventing mechanism lead and eject the premixed gas from the premixing chamber to the outside of the mixer, guide pipes 34 lead a heat transfer medium to the member walls of the nozzles 32, and heat transfer is performed between the heat transfer medium and the premixed gas via the member walls.
TAKAHASHI KATSUMASA
SAITO TSUKASA
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